Loading...
Welcome to Metal Mine! Today is Share:

Table of Content

    25 March 2020, Volume 36 Issue 03
    Previous Issue    Next Issue
    Geochemical Characteristics and Geological Significance of Early Permian Granodiorite in Abaga Banner，Inner Mongolia
    Yong Jiangong, Yang Duo, Zang Fulin Zang Haoping, Nan Tianhao, Chen Qi, Wang Xian, Zhang Jinlong, Jia Bin Gong Zhaocheng
    2020, 36(03):  1-7. 
    Asbtract ( 81 )   PDF (2850KB) ( 74 )  
    Related Articles | Metrics
    Zircon UPb dating and petrogeochemical studies were performed on the Early Permian intrusive rocks in the Algyin Huduge area of Abaga Banner,Inner Mongolia,and restrictions were imposed on their formation age,petrogenesis,and tectonic setting.The granites that intruded in this area are mainly mediumfine grain Wenxiang granite,with a zircon UPb age of 291.8 ± 3.1 Ma (MSWD = 1.5),formed in the Early Permian;rock geochemical characteristics indicate Elephant granite has the characteristics of high silicon,alkalirich,enriched (LILEs) Rb,Th,U,K,deficient Ba,Sr,and high field strength elements (HFSEs) Nb,P,Ti,and moderately strong negative Eu anomalies.A type of granite is characterized by partial melting of continental crust rocks.Combining petrology and regional structural characteristics of the study area,it is considered that the finegrained anomalous granite from the Early Permian in the study area is the product of the postorogenic tension environment.
    Discussion on Metallogenic Environment and Prospecting Direction of Gold Deposits in Paoshouyingzi Area,Dandong City
    Yang Fupeng Pan Guiming Leng Jiaoqian Nan Zhe Liu Xiancheng Meng Wei
    2020, 36(03):  8-11. 
    Asbtract ( 112 )   PDF (3201KB) ( 86 )  
    Related Articles | Metrics
    Background the Paoshouyingzi area in Dandong,Liaoning Province,is located in the East Asia section of the second ring outside the centralwestern Pacific Gold Ring in the global gold metallogenic belt,and the east section of the Fengcheng Arch in Kuandian Platform of the sinokorean paraplatform and Jiaotailong platform,the southwest part of the Yalu River metallogenic belt lies across the river from the famous Pingbei gold concentration area of the Democratic People's Republic of Korea in the East.Aim to point out the direction of ore prospecting.In order to determine the favorable position of ore prospecting through the study of metallogenic law in this area.Methods the geological characteristics,source of oreforming materials and physical chemistry environment of Liaoning Province were studied by the Geological Survey Project of Liaoning Province.The results show that the oreforming Materials of gold deposits in the area are mainly from deep source areas,and the oreforming hydrothermal solution is mainly from magmatic water.Conclusion the geological evolution history and metallogenic geological background of the area are very similar to that of the area,and it has the geological potential to form large gold deposits.
    Study on Soil Geochemical Characteristics and Ore Prospecting in Yangjiaonao Area in Dayishan
    Tang Zhixiang Zhu Xian Ning Yongyun Huang Xiaojun Zhao Jie Jiang Kui Xiao Liang
    2020, 36(03):  12-16. 
    Asbtract ( 75 )   PDF (2125KB) ( 81 )  
    Related Articles | Metrics
    Yangjiaonao mining area is located at the edge of Dayishan complex rock mass in the east of Qinhang metallogenic belt,which is a favorable area for finding tin polymetallic ore.In order to solve the problem of prospecting in shallow overburden area,1∶10 000 soil geochemical survey is carried out in this area.The results show that Sn,Cu,and other elements may be involved in the mineralization of the study area.The traditional logarithmic statistical method was used to determine the Sn,Cu and as anomalies in the inner circle of the study area.The results show that the anomalies of each element in the study area are obvious,well nested,and generally distributed in the EW direction.According to the stacking characteristics of combined anomalies,three comprehensive anomaly areas are delineated.Finally,through the verification of trenching and drilling engineering,multiple vein type tin polymetallic ore veins are found,and good prospecting results are achieved.
    Threedimensional Geological Model and Reserve Estimation of a Leadzinc Mine
    Jia Mucheng Wang Weiqi Zhang Rui
    2020, 36(03):  17-19. 
    Asbtract ( 87 )   PDF (2420KB) ( 79 )  
    Related Articles | Metrics
    For the existing geological survey data of a leadzinc mine,this paper carried out threedimensional geological modeling and resource reserve estimation for a leadzinc mine.Based on the theory of geostatistics,a ground model,a drilling database,an ore body model,and a block model of a leadzinc mine are established.The combined analysis and statistics of the samples in the ore body are used to estimate the block grade by the power distance inverse ratio method.Finally,according to the domestic classification method of geological mineral resources,and according to the classification of different grades,industrial grades,etc.,the resource reserve verification report is obtained,which provides a reliable guarantee for the followup production of leadzinc mine.The application of surpac software provides convenience for mines in safe scheduling and mine information management.At the same time,it provides a more intuitive and effective method for calculating the depletion rate and loss rate in dynamic production.The research shows that:By constructing the mine geological database,the threedimensional model can provide technical support for mining engineering,geological engineering,reserve estimation,ore grade dynamic management.
    Safety Issues in Mine Verticalshaft Contact Survey
    Wang Haibang
    2020, 36(03):  20-21. 
    Asbtract ( 74 )   PDF (1709KB) ( 85 )  
    Related Articles | Metrics
    Mine survey has the characteristics of poor safety,high risk and high accident rate. Shaft contact survey has the characteristics of high difficulty,high accuracy,the worst safety,and the most prone to accidents.In order to avoid accidents during the mine survey to the greatest extent,the problems in the contact mine shaft survey are analyzed and summarized,which mainly include the safety of the inoue and the safety of the underground; the fixation of the cage of the mine,the safety of the steel frame with the channel steel (or steel pipe) .The safety of the steel ruler,the safety of walking on the wooden board of the derrick;the choice of the thickness of the underground wire rope,the calculation of the weight of the wire rope,and the safety of the surrounding environment.Mine survey safety accidents have many hidden dangers,so they need to be comprehensively considered and taken seriously.
    #br# Application for the Sublevel Open Stopping with Blasting Throwing Haulage Subsequent Back Filling Methods in Liangshan Iron Mine
    Zhu Weimin
    2020, 36(03):  25-30. 
    Asbtract ( 83 )   PDF (1648KB) ( 79 )  
    Related Articles | Metrics
    In order to explore suitable mining methods for Liangshan Iron Mine,according to the requirements of the mining technology conditions and mining methords selections of the mineral deposits in the East wing of the Taiping mining areas of the mine,and comprehensive considering the mining experience for this kind of miniral body and the previous work the mine finished,select the right way of the sublevel open stopping with blasting throwing haulage sebsequent back filling methods and detailed descript the mining technology,the device selection and the goaf filling methods.All this work will have the reference values for the selection of the mining methods and the goaf filling works for the similar mines.
    Stress Wave Attenuation Law of Cylindrical Charge Blasting Based on Spacetime Attenuation
    Yang Panlei Tang Leihu
    2020, 36(03):  31-35. 
    Asbtract ( 115 )   PDF (1841KB) ( 90 )  
    Related Articles | Metrics
    The propagation law of stress waves generated by cylindrical charge blasting in rock is an important basis for blasting theoretical analysis and charge structure design.But at present,the propagation law of stress wave produced by cylindrical charge blasting is limited to simple superposition.Based on the timespace attenuation law of stress wave produced by spherical charge blasting,the attenuation law of stress wave in rock is verified by combining with numerical simulation,and a reasonable attenuation law of stress wave produced by cylindrical charge blasting is obtained.It is pointed out that the stress produced by cylindrical blasting increases in the propagation direction of wave explosive,and the action time of stress wave produced by cylindrical blasting increases compared with that of spherical blasting.
    Study on the Influencing Factors of Overlying Rock Caving in Filling Method Transition to Caving Method
    Li Guang Zhang Jun Ren Hailong Zhang Hongchang Li Guanghui Sun Yuchao
    2020, 36(03):  36-38. 
    Asbtract ( 58 )   PDF (1762KB) ( 86 )  
    Related Articles | Metrics
    For the case of the overlying rock falling in the upper part of the mine, the FLAC3D numerical simulation technology was used to analyze the influencing factors of overburden collapse. The selected factors include the top exposed area, the buried depth, the shape of the top plate, and the lateral pressure coefficient. The results show that the volume of the plastic zone in the upper part of the goaf increases with the depth of the burial depth and the exposed area of the goaf. When the roof of the goaf is square, the volume of the plastic zone generated in the upper part of the goaf is the largest. The easiest to fall. With the increase of the pressure measurement coefficient, the volume of the plastic zone generated in the upper part of the goaf increases first and then decreases, and finally tends to be stable.
    24 m High Bench Blasting Technology in Barun Mine
    Pei Bin, Zhang Bo Fu Mingyu
    2020, 36(03):  39-42. 
    Asbtract ( 60 )   PDF (2141KB) ( 77 )  
    Related Articles | Metrics
    With the increase of mining depth in barun mine，two or four groups of steps are overlapped because the temporary slope does not reach the mining boundary.The slope of the lower step is steep and the width of the step operation is narrow，so the largescale rotary drilling machine in this mine can not work safely on the lower platform.In order to speed up the expansion progress and improve the effective operation time of the equipment，the 24 m high bench blasting technology is put forward on two groups of parallel bench.On the spot，the lithology of the high platform step blasting area is analyzed and the ore producing area is divided.According to the different lithology of the blasting area，the blasting parameters，the charge structure in the hole and the millisecond time in the hole are optimized.The field blasting test shows that the application of 24m high bench blasting technology can reduce the time of avoiding blasting by 40%，increase the pure operation rate of drilling equipment by 31%，and reduce the rate of blasting block by 12%.Good application effect has been achieved in the field，which can be widely used.
    Monitoring of Stress Distribution of Surrounding Rock After Penetration of Two Large Mining Areas in Dahongshan Iron Mine
    Duan Xin
    2020, 36(03):  43-48. 
    Asbtract ( 78 )   PDF (2871KB) ( 85 )  
    Related Articles | Metrics
    The study of stress distribution characteristics of surrounding rock plays an important role in the stability analysis of surrounding rock,this paper takes the special engineering background that two major mining areas of Dahongshan Iron Mine are gradually blasted through,on the basis of exploring the stress distribution mechanism of surrounding rock,through the analysis of microseismic monitoring and stress monitoring results,the research focuses on the stress redistribution of surrounding rock after the mining area is connected.The research results show that:The stress is mainly increased in the surrounding rock mass of the goaf in the southern part of the Central II mining area,the degree of stress increase is inversely proportional to the distance from the goaf,however,a certain degree of unloading occurred in the close range of about 20 m near the goaf.Combined with the field observation,the rock mass deformation and rupture in this area is serious; During the process of 440 m section and 420 m section of the southern wing mining area,the stress increase rate in the surrounding rock began to increase significantly,and the stress increase increased，partial rock adjacent to the goaf has changed from unloading to stress increase; Below the Central II mining area,the surrounding rock in the southern part of the southern wing mining area is dominated by stress unloading,which is beneficial to the stability of the mining approach and the downstream trunk line arranged in the lower section of the southern wing,in addition to the disturbance stress that will be mined by the ore body,the disturbance stress generated by the penetration of the goafs has less influence on the roadway in these areas.
    Study on Dynamic Distribution Law of Overburden Fractures on Mining Face of Yuwu mine
    Guo Jinlin Lu Chunfeng Qiu Changqing Ma Qinyu Chang Qingling
    2020, 36(03):  49-52. 
    Asbtract ( 65 )   PDF (3060KB) ( 70 )  
    Related Articles | Metrics
    In order to study the dynamic distribution law of Overlying strata fissures during the mining process,the UDEC software is used to study the stress,displacement and fracture development of the overburden layer on the working face during the mining process.The results show that with the mining of coal seam,the subsidence of overburden gradually increases,the vertical displacement of the coal seam roof changes the most,and the range is also the largest.The farther the overlying rock is from the coal seam,the smaller the subsidence.A large number of cracks are formed in front of the openoff cut and behind the work surface,while in the middle of the goaf,the crack distribution is less.According to the fracture condition,the three zones are divided into three heights,among which the collapse zone is 17 m high and the fracture zone is 64 m high,which is consistent with the derivation of the empirical formula.The porosity distribution was calculated,and the square porosity in front of the cutting face reached 0.25,and the rear porosity in the working face reached 0.35 Combined with the formula,the threedimensional orosity variation diagram of goaf can be obtained.
    Trackless Mechanized Mining Technology for Gently Inclined to Inclined Mediumthick Orebody of Jinniu Company
    Zhang Lipeng
    2020, 36(03):  53-55. 
    Asbtract ( 65 )   PDF (1516KB) ( 82 )  
    Related Articles | Metrics
    In the mining of gently inclined to inclined medium thick ore body,there are many disadvantages,such as difficult ore haulage,large ratio of extractiontostope drift,large loss and dilution.Especially in the lowgrade mine of this type of ore body,how to reduce the mining cost and improve the mining efficiency is the most important direction.Through the optimization of mining and cutting engineering layout,improvement of mining equipment,and application of trackless equipment,it has successfully reduced mining costs,increased the selection grade,and achieved good economic benefits,which can provide referenceand mining experience for similar conditions mine.
    Discussion on Angle Parameters in the Front Line of Different Free Faces in North District of Sijiaying
    Huang Hanbo Zhou Meng Tian Shengjie Wang Honghui Hu Xingchen
    2020, 36(03):  56-58. 
    Asbtract ( 59 )   PDF (1860KB) ( 88 )  
    Related Articles | Metrics
    In order to achieve a better blasting effect,the selection of the position of the hole in the front row and the depth of the perforation are of great importance.According to the different forms of free surface and different lithology of the open pit slope,it is very important to determine the blasting parameters suitable for the geological status quo in the northern part of Shijiaying.In the following three forms of free surface: slope,facade,backslope and fixed slope angle,how to set reasonable blasting parameters under the same lithology,to ensure better blasting effect in the subsequent blasting construction.The analysis results can provide reference for future blasting.
    Mining Scheme of Hanging Mine Resources in an Open Pit Mine
    Zhou Rui Sheng Xiaoya Chang Jian
    2020, 36(03):  59-60. 
    Asbtract ( 77 )   PDF (1644KB) ( 80 )  
    Related Articles | Metrics
    After more than half a century of mining，the resources in the boundary of a large openpit mine are rapidly degraded，and the stope faces pressure to close the pit.According to geological data，there are abundant resources for hanging and supporting resources outside the realm of the stope.In order to make this part of the resources rationally utilized，combined with the actual conditions of the ore body occurrence conditions and the established production system，the mining，mining and mineral resources mining methods were selected and analyzed in terms of technology，safety and economy.
    Observation and Analysis of Oxidation "Three Zones" in Goaf Area of Fully Mechanized Mining Face
    Xue Ensi
    2020, 36(03):  61-63. 
    Asbtract ( 98 )   PDF (1586KB) ( 75 )  
    Related Articles | Metrics
    The fully mechanized mining face adopts the mining method of full height at one time，and there exists the problem of oxidation and ignition of waste coal in goaf during the mining process.Traces of in order to fully understand the working face goaf ignition characteristics of coal oxidation，ensure the stope safety，by the method of measuring point goaf putting on the determination of the goaf gas composition analysis，concluded that the gas sample parameters of fully mechanized working face，and，in turn，determine the scope of the oxidation "three zones" of minedout area，the insitu observation method is simple and easy to implement，can be accurately classified mining goaf spontaneous combustion in the process of three zones，in order to prevent goaf coal oxidation problem to provide the theoretical basis.
    Pillar Strength Estimation and Size Determination at Different Mining Depths
    Zhong Fusheng
    2020, 36(03):  64-65. 
    Asbtract ( 127 )   PDF (1512KB) ( 77 )  
    Related Articles | Metrics
    In the room and pillar mining method,the size of the pillar will affect the strength of the pillar,the compressive stress to which the pillar is subjected,and the recovery rate of the mine.Under different mining depths,the compressive stress on the pillar is gradually increased,the allowable strength of the pillar is gradually increased,the size of the pillar is increased,and the recovery rate is reduced.In order to determine a reasonable pillar size,the strength of the pillar and the axial compressive stress were estimated using the Lunder and Pakalnis pillar strength theory and the dependent area method,respectively,so as to calculate the safety factor of the pillar,and on this basis,a reasonable pillar size was selected.By changing the mining depth,the size of the pillar at different mining depths can be calculated,and then the recovery rate can be calculated.
    Landslide Control Measures in Liujiashan Dump
    Li Junchao Liu Chaowei Ma Hui
    2020, 36(03):  66-68. 
    Asbtract ( 66 )   PDF (2039KB) ( 83 )  
    Related Articles | Metrics
    Liujiashan dump is formed by civil mining,and largescale landslide has occurred.In order to ensure the safety of production and living facilities of upstream and downstream,combined with site actual conditions and field investigation,this paper puts forward slope cutting treatment scheme.After treatment,Liujiashan dump smoothly tides over rainy season,and it is in stable position at present.The aim of treatment has been reached.
    Research on Support Technology of Soft Rock Roadway in Steep Inclined Thick Seam
    Yan Jingyu Zhang Fuyu
    2020, 36(03):  69-71. 
    Asbtract ( 63 )   PDF (1545KB) ( 83 )  
    Related Articles | Metrics
    In order to solve the problem of soft rock support in steeply inclined thick coal seam,the roadway of 3710 working face in Fuxing Coal Mine was taken as the engineering background.Through investigation and analysis,theoretical calculation and numerical simulation,a support,high performance watch material and weak terrain were adopted.Actively strengthen the principle of support.Through the use of "highstrength anchor + high pretightening anchor cable + metal mesh + W steel strip" for basic support,special locations to strengthen support,numerical simulation and onsite monitoring show that the support scheme effectively controls the roof of the roadway and Two sets of deformation,support once in place.
    Application of New Type 27 mm High Strength FRP Bolt Technology in Tashan Coal Mine
    Wang Ning
    2020, 36(03):  72-74. 
    Asbtract ( 67 )   PDF (1530KB) ( 76 )  
    Related Articles | Metrics
    Because the mining roadways in Tashan Mine are all sublevel caving mining,the mine pressure is obvious,the roadway section is large,and the surrounding rock deformation along the tail groove is large in the mining process,which results in the failure of support when using traditional ordinary FRP bolt support,such as bolt body being pulled off,bolt body tail being cut off and so on.To solve the above problems,this paper adopts a new type of high strength FRP bolt with a diameter of 27 mm to Tashan Mine.The test results of 8112 working face show that the safety of roadway support and the mining efficiency can be greatly improved by using the new integral high strength FRP bolt instead of the common FRP bolt with the same diameter to ensure the safety of mining.After the new bolt is adopted,the roadway support has both safety and economic benefits.At the same time,it has positive significance to promote and draw lessons from similar mining roadways in the whole mine and all other similar mines.
    Application of Fuzzy Mathematics Method in Mining Method of Underground Bauxite
    Ren Weidong Fan Yuqian
    2020, 36(03):  75-77. 
    Asbtract ( 47 )   PDF (1512KB) ( 81 )  
    Related Articles | Metrics
    In the mining process of underground bauxite mine,the biggest problem is the high loss rate and dilution rate of ore mining,which causes serious waste of national resources.To select the optimal mining method,taking a gently inclined thinlayer bauxite mine as an example,combined with the characteristics of underground mining,this paper establishes the optimal decisionmaking model by using the fuzzy mathematics method,obtains the weight of each index,and makes a comprehensive evaluation of the three mining methods,and determines that the optimal scheme is the hydraulic support mining method,which is finally verified by the industrial test,and obtains good results.At the same time,it is also selected for other mines The appropriate mining method provides a reference.
    Causes and Treatment of Deep Hole Blasting in Jiugang Xigou Limestone Openpit Mine
    Chen Kuan
    2020, 36(03):  78-79. 
    Asbtract ( 66 )   PDF (1658KB) ( 89 )  
    Related Articles | Metrics
    Aiming at the current situation of serious root bed production in the middle and deep hole blasting of Jiugang Xigou Mine,In order to achieve a good blasting effect,Through a brief analysis of the causes of deephole blasting in Jiugang Xigou Mine,combined with similar model tests,Proposed measures such as reasonable deep boreholes,increasing the diameter of the front row holes and filling the bottom of the boreholes with heavy ammonium fried drugs.Through field test verification,the results show that after the above measures are taken,the occurrence of blasting roots is effectively controlled,the blasting quality is significantly improved,the ore shovel efficiency is increased,the mine blasting cost is reduced,and the normal and safe production of the mine is effectively guaranteed.
    Construction Technology of Fast Passing Through Fault in Fully Mechanized Coal Face of Youxianshan Coal Mine
    Jin Huiguang
    2020, 36(03):  80-83. 
    Asbtract ( 67 )   PDF (1817KB) ( 73 )  
    Related Articles | Metrics
    In order to ensure the safety and speed of 15209 fully mechanized face passing through F4 normal fault，improve the coal pillar recovery，reduce the rock breaking amount and reduce the failure rate of mechanical equipment in the face，youxianshan coal mine，through technical research，reasonably analyzes and compares the construction scheme of working face passing through F4 fault，puts forward the construction scheme of loosening blasting and pitching method，and puts forward the construction scheme of pitching roof during the pitching recovery of working face The combined support measures of "Wedge impact advance support + grouting + Construction constant resistance anchor cable hanging shed" can improve the raw coal recovery by 42 000 t compared with the traditional construction scheme through practical application.At the same time，the combined support measures of roof can control the subsidence and fragmentation of the inclined roof，solve the technical problem of difficult top coal reservation during the period of the inclined roof，and ensure the work Face safe and efficient mining.
    Application of Drainage Facilities for Embankment of Tailings Reservoir
    Tan Jieji
    2020, 36(03):  84-85. 
    Asbtract ( 70 )   PDF (1534KB) ( 78 )  
    Related Articles | Metrics
    In recent years，the project investment of the newlybuilt tailings pond is obviously increased by the limitation of the location of the tailings pond and the environmental protection，so the engineering increase of the newlybuilt tailings pond is increased，so that the highdam tailings pond close to the level of 100~200 m has been formed in a large amount at the height of the original rockfill dam.To increase the stability of tailing pond，taking a tailing reservoir project as an example，the buried depth of the phreatic line of the dam is high，and the stability calculation can not meet the relevant specification requirements.In order to effectively reduce the phreatic line，the drainage facilities combined with the largemouth radiation well and the drift tube are adopted in the stacking dam.The application of the drainage facilities plays an important role in ensuring the stability of the dam body through the actual operation of the site.
    Design Optimization of a Large Ore Bin Foundation in a Concentrator
    Sun Yinghua
    2020, 36(03):  86-88. 
    Asbtract ( 60 )   PDF (1734KB) ( 95 )  
    Related Articles | Metrics
    Structural design and optimization has received more and more attention from the constructors.Foundation type selection and structural optimization are the focus and difficulty of structural design and optimization.A reasonable basic solution can not only meet the safety of the structure,but also greatly reduce the engineering cost.Shorten construction period.In order to design and optimize the largescale ore bin foundation of a concentrator,the main principles of foundation design optimization are elaborated,the engineering background and the original design status of the ore foundation are summarized,and the optimization design process of the ore bin foundation is emphasized.Basic design optimization principles and structural design calculation methods.The optimized design finally met the requirements of design strength and reduced the earth construction price by more than 4 million yuan.The design results have certain reference value for similar engineering design.
    A Method to Improve the Efficiency of Hole Formation in Nanfen Openpit Iron Mine
    Zhang Shaofei Gao Yushan
    2020, 36(03):  89-90. 
    Asbtract ( 76 )   PDF (1484KB) ( 79 )  
    Related Articles | Metrics
    Nanfen Mine since hillside open pit into deep openpit,it is difficult to ditch.Especially in recent years,due to the influence of abundant groundwater,the borehole occurred serious collapse and the hole formation rate is low in the ditch blasting area.In order to solve this problem,professionals have carried on the exploratory research.And finally,the efficiency of hole formation increased from 0~30% to 100% through a series of experiments using guide sleeve of rolled iron plate.Nanfen mine has summed up a set of effective methods to improve the efficiency of hole formation,and this method has certain reference value for other similar projects.
    Analysis of Reasonable Coal Pillar Width in Isolated Face of Jinzhuang Mine
    Wang Linkui
    2020, 36(03):  95-97. 
    Asbtract ( 54 )   PDF (1904KB) ( 82 )  
    Related Articles | Metrics
    Application of Segmented Empty Field Backfill Mining
    Xu Junjie
    2020, 36(03):  101-102. 
    Asbtract ( 51 )   PDF (1775KB) ( 78 )  
    Related Articles | Metrics
    Experiment on Improving the Metal Recovery of a Lowgrade Copper Ore by Preclassification Combined Beneficiation
    Luo Zengxin
    2020, 36(03):  103-107. 
    Asbtract ( 97 )   PDF (1723KB) ( 75 )  
    Related Articles | Metrics
    In a largescale lowgrade gold copper mine,the flotation process is used to enrich the highgrade copper ore,while the biological heap leaching process is used to produce cathode copper for the lowgrade copper ore.With the increase of the heap height,the leaching rate of iron in the mine keeps increasing,but the copper leaching rate decreasing.With regard to the biological heap leaching of lowgrade copper ore,the preclassification and smelting combined process was adopted,and the original heap leaching process was optimized.The leaching rate of the +2 mm sieve products in the column leaching test was 75.22%,which was 5.08 percentage points higher than the original leaching rate,and the iron cumulative leaching rate decreased by 2.75 percentage points.2 mm products can finally obtain copper concentrate containing 20.20% copper,with recovery rate of 87.21%,associated gold grade of 3.6 g/t,gold recovery rate of 5874%,associated silver grade of 83.7 g/t,silver recovery rate of 68.28%,and sulfur concentrate containing 47.12% sulfur with recovery rate of 33.00% through flotation process.So by using pregrading and metallurgy process,not only the comprehensive recovery rate of copper reaches 79.55% which is 10.41 percentage points higher than that of 69.14% by the original bioleaching process,but also get some associated gold,silver and sulfur concentrate.What's more,the new process will increases about RMB 116 million profits.In conclusion,the new process will bring a large number of benefits,including raising the utilization efficiency of resource,reducing the leaching of ferric acid,achieving remarkable economic benefit,and greatly saving the environmental protection cost.
    Study on Comprehensive Utilization Technology of Fine Tailings
    Wang Ronglin Wang Huan
    2020, 36(03):  108-112. 
    Asbtract ( 71 )   PDF (1604KB) ( 88 )  
    Related Articles | Metrics
    In order to improve the comprehensive utilization rate of finegrained tailings in Gushan Mining Corporation,studied and analyzed the properties of finegrained tailings,and systematically studied the tailings content and calcination process system for the ceramsite packing density and apparent density porosity,water absorption,cylinder pressure strength and softening coefficient of different composition systems.The research results show that the tailings ceramsite property has better tailings content and calcining process for the whole tailings ceramsite,fine tailings+sludge ceramsite and fine tailings+sludge+pulverized coal ash ceramsite three kinds of composition system,and the three kinds of tailings ceramsite can be used as coarse aggregate instead of stone.
    Experiment on the Process of Comprehensive Recovery of a Tantalum-Niobium Ore in Jiangxi Province
    Huang Jiancheng Peng Huiqing Zhang Ying Xu Haiyang Sun Xiangbin Wei Zhezhe
    2020, 36(03):  113-116. 
    Asbtract ( 139 )   PDF (2239KB) ( 74 )  
    Related Articles | Metrics
    The current status of tantalumniobium ore dressing in a mine in Jiangxi is relatively simple,and it is difficult to achieve effective recovery of polymetallics.To solve this problem,a feasible reform guiding plan was proposed.By conditions experiments of the shaker,jigging and magnetic separation,the feasible joint process of magnetic separationgrovity separation and jiggingmagnetic separationgrovity separation were compared.According to the experiment results,the magnetic separationgravity separation combined closedcircuit test can obtain the following results:ZrO2 grade of 60.78% in zirconium concentrate,recovery rate is 88.83%;Nb2O5 grade of 42.09% in antimony concentrate,recovery rate is 46.08%;the Sn grade of 31.69% in tin concentrate,and the recovery rate is 49.31%.Under this condition,the comprehensive recovery of the multipurpose metal of the tantalumniobium ore can be realized.
    Comprehensive Utilization of Stabilization and Tailless on a Zinc Slag from Sichuan
    Wang Zhen, Huang Shaokun Peng Yang Ding Wei Xiao Junhui,
    2020, 36(03):  117-120. 
    Asbtract ( 109 )   PDF (1786KB) ( 77 )  
    Related Articles | Metrics
    To solve the environmental pollution of zinc slag stack in Huili,at the same time,according to the high content of lead and zinc,the zinc residue and sodium sulfide were added to the bar mill for curing and flotation.The parameters of the process of rod mill vulcanization and flotation were determined by condition test.Then,leaching toxicity tests were conducted on the flotation tailings,which also was used to prepare sulfur building materials.The results show that the sulfuration rate of both Pb and Zn can surpass 90% at the optimum conditions; the sulfur concentration contain 65.26% S,with S recovery of 78.14%,the Pb concentration contain 45.29% Pb with Pb recovery of 80.02% and the Zn concentration contain 41.02% S with S recovery of 70.14% could be obtained.the leaching toxicity of the heavy metals in the flotation tailings meet the corresponding National Standard.The sulfur building material with 45 MPa compressive strength and 1% water absorption could be prepared using the tailings.The stabilization and tailless comprehensive utilization of zinc slag were finally completed.
    Iron Increase and Sulfur Reduction Flotation Tests of the Heavy Medium Production in a Copper Mine
    Wu Jianping Xiao Qifei Wang Xiaoyu Liu Jun, Wu Hongqiang
    2020, 36(03):  121-123. 
    Asbtract ( 79 )   PDF (1760KB) ( 81 )  
    Related Articles | Metrics
    The iron grade of a copper mine′s heavy medium product is 56.24%,the sulfur content is as high as 9.34%,and 95.72% of sulfur is in the form of pyrite.In order to obtain the iron concentrate with sulfur content lower than 2%,the ore was processed according to the principle of grindinglow intensity magnetic separationflotation.Experimental results show that under the optimum parameters of the test,heavy media products after one stage grinding (-0.043 mm 85%) one roughing one cleaning low intensity magnetic separationone roughing two scavenging desulfurizing flotation process processing,iron concentrate with production rate of 45.23%,sulfur content is 1.52%,total iron grade of 66.50% can be obtained,can be used as raw materials for the subsequent steel smelting of ore matching,which can provide technical reference for utilization of such heavy medium product.
    Application Status of Grinding Aids in Bauxite Comminution in China
    Wang Qin,
    2020, 36(03):  124-126. 
    Asbtract ( 61 )   PDF (1529KB) ( 71 )  
    Related Articles | Metrics
    In view of the characteristics of abundant but difficult to be liberated of monohydrous bauxite ore in China,the application status of the grinding aid in the grinding process of bauxite in China,the structural characteristics of monohydrous bauxite and the research progress of the mechanism of the grinding aid are expounded.It is pointed out that the development of environmental protection,high efficiency,green and non-toxic new grinding AIDS and the study of the influence of grinding AIDS on the subsequent flotation and dissolution of bauxite and its mechanism are the development direction of bauxite grinding AIDS in the future,and provide a reference for the development and utilization of bauxite ore in China.
    Experimental on Recovery of Tianium from Iron Tailings in Panxi
    Zhu Yongtao,
    2020, 36(03):  127-129. 
    Asbtract ( 74 )   PDF (1760KB) ( 80 )  
    Related Articles | Metrics
    In order to recover ilmenite resources from an iron tailings in Panxi，based on the nature of the ore,the comparison of "two stage magnetic separationfloatation"and "slag separationtwo stage magnetic separationfloatation"is carried out,titanium concentrate with TiO2 grade higher than 47% can be obtained by opencircuit flotation in both processes,using the process of"slag separationtwo stage magnetic separationfloatation",concentrate yield and recovery rate index is better.On the basis of open circuit test in laboratory,closed circuit continuous flotation test is carried out,the results of the study showed,using the process of"slag separationtwo stage magnetic separationfloatation",under the condition of TiO2 grade of 9.59% in raw ore,titanium concentrate with 8.54% yield,46.13% TiO2 grade and 21.63% recovery was obtained.
    Comprehensive Evaluation Modeling and Results of Phosphate Resources in Central Guizhou
    Ran Wenrui et al()
    2020, 36(03):  130-136. 
    Asbtract ( 69 )   PDF (1726KB) ( 81 )  
    Related Articles | Metrics
    Application of Concentrated Dewatering Process of Tailings in Zhangzhuang Mine
    Wu Hong et al
    2020, 36(03):  144-145. 
    Asbtract ( 59 )   PDF (1545KB) ( 82 )  
    Related Articles | Metrics
    Study on Optimization of Limestone Products in Inner Mongolia
    Wang Liming et al
    2020, 36(03):  146-148. 
    Asbtract ( 83 )   PDF (1768KB) ( 73 )  
    Related Articles | Metrics
    Experiment Study on the Recovery of Iron from Copper Tailings in South African
    Wang Haoming et al
    2020, 36(03):  149-150. 
    Asbtract ( 68 )   PDF (1571KB) ( 75 )  
    Related Articles | Metrics
    Experimental Research on Recovering and Utilization of Mica from a Rare Metal Tailings
    Wang Quanliang et al
    2020, 36(03):  151-153. 
    Asbtract ( 42 )   PDF (1612KB) ( 76 )  
    Related Articles | Metrics
    Preselection Test of Magnetite Ore of Grinding Feeding in Hemushan Concentrator
    Lu Hu et al
    2020, 36(03):  154-156. 
    Asbtract ( 48 )   PDF (1633KB) ( 108 )  
    Related Articles | Metrics
    Optimization Practice of Fine Crushing-First Stage Grinding in Yanshan Iron Mine
    Tian Yanhong et al
    2020, 36(03):  160-161. 
    Asbtract ( 44 )   PDF (1505KB) ( 82 )  
    Related Articles | Metrics
    Troubleshooting and Maintenance of Frequency Conversion Device for Openpit Mining Equipment
    Zhang Mengli
    2020, 36(03):  162-163. 
    Asbtract ( 56 )   PDF (1536KB) ( 74 )  
    Related Articles | Metrics
    In order to obtain a better production capacity.It is necessary to arrange the maintenance and trouble shooting of AC variable frequency speed regulation system reasonably under the background of the openpit Mine largescale equipment such as electric shovels,roller drills gradually use the AC frequency conversion speed regulation system.In the aspect of trouble shooting of frequency conversion device,most of the troubles can be solved by analyzing the common troubles and making corresponding measures.In the other aspect of frequency conversion equipment maintenance,according to the characteristics of large temperature difference and dust concentration in operating environment,the maintenance work of dust removal and ventilation and heat dissipation is scientifically instituted.The periodic maintenance and common trouble removal of frequency converter in openpit mining improve the efficiency of frequency converter in openpit mining,and stable guarantee the production and operation of mining.
    Mathematical Modeling and Application of Steering Construction of Roadheader
    Zhao Zheng Ding Liangliang Liu Hui
    2020, 36(03):  164-166. 
    Asbtract ( 87 )   PDF (2155KB) ( 86 )  
    Related Articles | Metrics
    At present，during the use of the comprehensive excavation technology in the construction of a coal mine，the problem of the slow progress of the construction of the roadheader，the difficulty of safety management，and the excessive dependence on the operation experience of the driver of the roadheader without a reliable calculation method are common.Provide reliable numerical calculation method for the steering construction of the roadheader and complete the steering construction of the roadheader safely and efficiently.The research uses simplified trajectory of the roadheader's steering construction，combined with mathematical modeling methods.Through the mathematical operation，the minimum range and length calculation formula for the expansion work during the turning construction of the roadheader was obtained.The calculation formula has important guiding significance for the steering construction of the roadheader.
    Design and Implementation of Reversible Interworking Belt Conveyor in Yanshan Iron Mine
    Luo Min Zhang Lei
    2020, 36(03):  167-169. 
    Asbtract ( 66 )   PDF (1567KB) ( 77 )  
    Related Articles | Metrics
    The two main crushing systems of the oxidized ore and the primary ore in Yanshan Iron Mine have the same design and treatment capacity and the same equipment selection,However,the uneven capacity of the ore dressing mill in the next process leads to the increase of the operation rate of the oxidized ore crushing system,the decrease of the operation rate of the primary ore crushing system,the difficulty of the production organization,and the waste of power consumption.In order to solve the problem,based on the original crushing system technology,according to the field equipment,civil layout,design and installation of an interworking reversible belt machine.The design parameters of belt conveyor should be checked and confirmed strictly.After the belt conveyor is installed,the interworking between the oxidized ore and the primary ore system is realized,and the productivity of the two systems is complementary,Thereby,the purpose of reducing cost and increasing benefit is achieved.
    Improvement of WK20 Electric Shovel Gas Path Pressure Control System
    Duan Shufa Zhang Wei Li Honggang
    2020, 36(03):  170-171. 
    Asbtract ( 75 )   PDF (1580KB) ( 73 )  
    Related Articles | Metrics
    The WK20 type electric shovel used by sijiaying North District Branch company frequently suffers from failures of the original design pneumatic pressure controller because of the bad working environment,the poor stability of power supply of the equipment and the large vibration in operation The normal operation of equipment production is seriously restricted.In order to reduce the equipment failure rate and spare parts cost,the hardware and power supply mode of gas path pressure control system were improved based on the analysis of working principle of gas path pressure control system.The result of practice shows that the improvement of gas path control system can obviously reduce the equipment failure rate,reduce the maintenance time,increase the equipment operating rate,and save the cost and improve the equipment operating efficiency.
    Overview of Mining SVG Reactive Compensation Technology
    Ma Qiang
    2020, 36(03):  172-173. 
    Asbtract ( 64 )   PDF (1540KB) ( 73 )  
    Related Articles | Metrics
    Control of Up and Down of Scraper Conveyor on Working Face
    Tian Fusheng et al
    2020, 36(03):  176-177. 
    Asbtract ( 40 )   PDF (3206KB) ( 78 )  
    Related Articles | Metrics
    6DSM22SL Diesel Engine Crankshaft Failure Maintenance
    Jiang Guangyi
    2020, 36(03):  178-180. 
    Asbtract ( 58 )   PDF (1907KB) ( 70 )  
    Related Articles | Metrics
    Industrial Application of ZCLA Concentrator in Meishan Iron Mine
    Zeng Shanglin et al
    2020, 36(03):  181-183. 
    Asbtract ( 76 )   PDF (1653KB) ( 74 )  
    Related Articles | Metrics
    Application of Wireless Signal Device in Auxiliary Well Hoist Control System
    Liao Shida
    2020, 36(03):  190-192. 
    Asbtract ( 49 )   PDF (1713KB) ( 96 )  
    Related Articles | Metrics
    Research and Application of a New Type of Automatic Ball Feeding Device for Ball Mill
    Xu Zhenzhong et al
    2020, 36(03):  193-194. 
    Asbtract ( 56 )   PDF (3204KB) ( 68 )  
    Related Articles | Metrics
    Design and Optimization of a Deep Mine Ventilation System
    Jiao Haokai, Zhang Xiliang, Li Erbao, You Yuanyuan,
    2020, 36(03):  195-197. 
    Asbtract ( 62 )   PDF (2250KB) ( 92 )  
    Related Articles | Metrics
    In order to solve the problems of insufficient air supply,uneven air distribution,intensified air leakage and increased air resistance in deep shaft and roadway below a certain height of 200 m in Guangxi,the modeling and optimization design of ventilation network of the deep mine were carried out by using Ventsim 3d ventilation simulation system,a professional ventilation software.The ventilation network was calculated in the most difficult period of mine ventilation.By means of establishing new ventilation roadway,replacing main fan parameters,and adding local fan,the efficiency of the main fan reached 80.1%,and the air flow in each shaft reached the design requirements,which provided data support for the actual ventilation design.
    Study on Fire Prevention and Extinguishing Technology of Goaf Spontaneous Combustion under Driving Roadway with Narrow Coal Pillar in a Mine
    Fan Zhenghong
    2020, 36(03):  198-200. 
    Asbtract ( 64 )   PDF (1724KB) ( 70 )  
    Related Articles | Metrics
    Taking the 8800 working face of a mine as the research background,in order to solve the problem that the geological structure of the coal seam is complex and can not be continuously recovered,the concentration of CO increases at the corner of the return air during the stoping period,and the temperature of the inlet and outlet Lane rises,which is prone to the hidden danger of spontaneous combustion of coal.After practical application,it is found that the concentration of goaf temperature,CO and other index gases show a continuous downward trend and remain stable for a long time.Therefore,this method can effectively inhibit the spontaneous combustion trend of the goaf with narrow coal pillars.
    Research on Fire Area Control Technology of Fully Mechanized Mining Face in Yannan Coal Mine
    Zhang Zhanguo
    2020, 36(03):  201-203. 
    Asbtract ( 66 )   PDF (1567KB) ( 86 )  
    Related Articles | Metrics
    The I0128207 working face of yannan coal mine began to withdraw the hydraulic support on March 13，and the ventilation team detected the high temperature point in the no.1 support caving area on April 19.In the following days，the carbon monoxide concentration and temperature of the working face continued to rise，and the working face was closed on April 23.Based on the analysis of the causes of spontaneous ignition in the working face，two sand rods and a concrete seal are constructed in the transportation channel，and water and nitrogen injection are carried out continuously.A concrete seal shall be constructed at the position of 8 meters from the return air gateway to the return air outlet to further reduce the negative pressure on the working face，and water and nitrogen shall be continuously injected into the working face for realtime monitoring.When the gas composition，concentration，temperature and other indicators in the closed area meet the working face opening conditions，the sealing can be opened.Considering I0128207 working face after unsealing continue to withdraw hydraulic support special situation，formulated the working face after unsealing fire prevention technical measures.
    Analysis of Blasting Safety Technology in Underground Mining Face
    Li Guoping et al
    2020, 36(03):  204-206. 
    Asbtract ( 55 )   PDF (1551KB) ( 89 )  
    Related Articles | Metrics
    Exploration and Application of Dust Pollution Control Technology at Daichiba Washery
    Ding Lin et al
    2020, 36(03):  210-213. 
    Asbtract ( 42 )   PDF (2046KB) ( 68 )  
    Related Articles | Metrics
    Application of Waterproof Geomembrane in Slope Treatment of Open Pit Mine
    He Xingqing
    2020, 36(03):  213-215. 
    Asbtract ( 63 )   PDF (1515KB) ( 85 )  
    Related Articles | Metrics
    Experiment on Waste Water Containing High Concentration of Cyanide from a Gold Mine
    Guo Xueting et al
    2020, 36(03):  216-218. 
    Asbtract ( 50 )   PDF (1563KB) ( 85 )  
    Related Articles | Metrics
    Prevention and Treatment of Small Curvature Sidetracking Technology During Drilling
    Xue Xiaofeng
    2020, 36(03):  219-220. 
    Asbtract ( 45 )   PDF (1840KB) ( 68 )  
    Related Articles | Metrics
    Analysis and Preventive Measures of Cracking of Rotary Table of Roadheader
    Li Zheng
    2020, 36(03):  223-225. 
    Asbtract ( 60 )   PDF (1593KB) ( 81 )  
    Related Articles | Metrics
    Control of Moisture of Expanded Ammonium Nitrate Explosive
    Tie Xuanxun
    2020, 36(03):  226-227. 
    Asbtract ( 95 )   PDF (1500KB) ( 81 )  
    Related Articles | Metrics
    Application of Element Analysis Technique in Coal Quality Analysis
    ZhangWei et al
    2020, 36(03):  228-231. 
    Asbtract ( 42 )   PDF (2200KB) ( 89 )  
    Related Articles | Metrics
    Study on Automatic Drainage System of Underground Mine
    Zhang Wenfeng et al
    2020, 36(03):  232-233. 
    Asbtract ( 72 )   PDF (1583KB) ( 74 )  
    Related Articles | Metrics
    Optimization of Filling System in Luohe Iron Mine of Masteel
    Li Shengpeng
    2020, 36(03):  234-235. 
    Asbtract ( 72 )   PDF (1505KB) ( 109 )  
    Related Articles | Metrics
    An Adjustment Method of Data Processing in Concentrators
    He Shuming
    2020, 36(03):  236-237. 
    Asbtract ( 53 )   PDF (1512KB) ( 73 )  
    Related Articles | Metrics
    Element Composition Analysis in Bauxite Slurry Based on Laser Element Analysis Technique
    Zhang Jian et al
    2020, 36(03):  238-240. 
    Asbtract ( 54 )   PDF (1906KB) ( 84 )  
    Related Articles | Metrics
    Analysis of Anti-Tear Technology Scheme of Conveyor Belt
    Lin Yanghui
    2020, 36(03):  241-242. 
    Asbtract ( 58 )   PDF (1507KB) ( 68 )  
    Related Articles | Metrics