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

Table of Content

    26 May 2020, Volume 36 Issue 05
    Previous Issue    Next Issue
    Genesis and Geochemical Characteristics of the Granite Groups and the Molybdenum Deposits
    Wang Zhongwei Qian Hongli Zhao Zhenyun Huang Ying
    2020, 36(05):  1-4. 
    Asbtract ( 73 )   PDF (2289KB) ( 94 )  
    Related Articles | Metrics
    In order to analysis Genesis and Geochemical Characteristics of the Granite Groups and the Molybdenum Deposits，In combination with relevant analysis of geological work,the jianfengding crest region granite body of main characteristics,geochemical characteristics,on the basis of the granite rock mass respectively highprecision LAMCicpms zircon UPb determine years,whole rock,rare earth and trace elements analysis,1∶50 000 stream sediment survey and 1∶10 000 geochemical profile measurement,the measurement results are detailed interpretation,①obtain peak rock group of top 207 Pb/235 U weighted average age was (108.34 + 0.88) Ma,age belong to the early cretaceous,The granodiorite porphyry veins in the shallow facies are distributed in groups,which indicates that there may be hidden rock mass in the deep part of the granodiorite veins,and it is closely related to Mo,W and other polymetallic metallogenesis in the area.②After geochemical measurements,5 anomalies of Mo and Pb elements were delineated,2 molybdenum mineralization zones and 6 Pb mineralization bodies were found.The above analysis shows that the prospecting potential of the peak area is huge,especially for the further exploration in the depth of the area has certain reference value.
    Geochemical Characteristics and Influencing Factors of Selenium in Cultivated Soil of Pu'an County,Guizhou Province
    Suo Ruiqiang Huang Ying Yang Le
    2020, 36(05):  5-7. 
    Asbtract ( 61 )   PDF (2018KB) ( 93 )  
    Related Articles | Metrics
    In order to discuss the geochemical characteristics and influencing factors of selenium in cultivated soil of Pu′an County,Guizhou Province,based on the results of the geochemical survey and evaluation of 1∶50 000 farmland quality in the county,by means of parameter statistics,isoline drawing,correlation analysis and other methods,summarized the geochemical characteristics of selenium in the cultivated soil of this county,and research the influencing factors of selenium.The results show that the selenium rich cultivated land is rich in resources,and the distribution of selenium is mainly affected by the parent material.At the same time,the extensive distribution of rich organic matter and acid soil is also an important reason for selenium enrichment.
    Contrast Analysis of Coal Seams of Longtan Formation in Gujiaodi Mining Area,Hunan Province
    Wang Xilin
    2020, 36(05):  8-10. 
    Asbtract ( 71 )   PDF (1754KB) ( 91 )  
    Related Articles | Metrics
    The Gujiaodi mining area is located in the middle of the Shaoyang Basin in the southern section of the Lianshao Coalfield.The geomorphic location of the Shaoyang Basin is at the composite location of the central Qiyang arc structure and the northsouth structure of Xinning.The coalbearing stratum is the Upper PermianLongtan Formation.In order to analyze the features of the coal seams of the Longtan Formation in the Gujiaodi Mining Area,a detailed comparison and analysis of the coal seams of the Longtan Coal Measures in this area was performed by the sedimentary cycle method,the mark layer method,and the logging curve comparison method.The characteristics of the top and bottom plates provide a reliable geological basis for guiding the mining area's coal resource prospecting work and coal resource mining.
    Analysis on the Characteristics of Associated Resources of Zoujiashan Uranium Deposit in Xiangshan
    Zhang Defu Luy Tingting Liu Yanyuan
    2020, 36(05):  11-12. 
    Asbtract ( 106 )   PDF (1547KB) ( 94 )  
    Related Articles | Metrics
    The Zoujiashan uranium deposit is located in the west of the Xiangshan ore field and is a typical hydrothermal uranium deposit.The characteristics of the associated resources of the deposit were discussed and analyzed.Xiangshan uranium associated Th、Mo、P、Pb、Zn、Ag,polymetallic mineralization belongs to endogenous mineralization.The Zoujiashan deposit is a UThREEMoP metallogenic series with thorium as the main ore body.The results showed that the content of UO2 and ThO2 was 6.2%~32.56%,and 40.4%~67.58% in thorium uranite and thorium.The uranium associated with REE,especially those associated with high content of REE in uraniumrich ores.The content of ΣREE increased with the increase of the U,and the higher the content of U in ore,ΣREE increased faster,but the nonlinear correlation.
    Analysis of Geothermal Reservoir Condition in Geothermal Anomalous Area of Xiuweng Yangming Cultural Park,Guizhou
    Wu Xiaofeng
    2020, 36(05):  13-16. 
    Asbtract ( 72 )   PDF (2292KB) ( 91 )  
    Related Articles | Metrics
    In order to analyze the thermal storage conditions of the geothermal area of Xiuwen Yangming Cultural Park in Guizhou,the geothermal structure of this cultural park is located in the northsouth fold troughtype deformation zone of Fenggang in the Upper Yangtze block.The relatively uplifted area in the southeast,the Gubao fault and the Maoshan fault meet at the acute angle area;the XinglongchangTiechang double anticline secondary fold power plant anticline is the main thermal storage structure in the area,and the Maoshan fault is the heat source channel in the area.The thermal storage units in the geothermal area of this cultural park are the Cambrian Loushanguan Group (∈2-3ls),Shi Lengshui Formation (∈2s),Gaotai Formation (∈2g),and Qingxudong Formation (∈1q) limestone,Dolomite limestone and dolomite;the caprocks are Permian Longtan Formation (P3l) clay rock and siltstone.The water output of geothermal well is 888 m3/d,and the wellhead temperature is 46 ℃,which is a geothermal resource with low temperature and hot water.Hot mineral water type is HCO3-Ca+Mg type,containing high fluorine,strontium,lithium,metasilicic acid,and weak alkaline water.It is concluded that the type of geothermal exploration is a combination of banded and layered thermal storage (type II3).
    Multiband Information Extraction of Magnetic Anomalies in Saima Comprehensive Deposit
    Pan Guiming et al
    2020, 36(05):  22-25. 
    Asbtract ( 78 )   PDF (1980KB) ( 93 )  
    Related Articles | Metrics
    Research and Application of New Cement Concrete Technology in the Southeast Air Shaft of Meishan Iron Mine
    Xu Zhicheng
    2020, 36(05):  29-32. 
    Asbtract ( 82 )   PDF (1922KB) ( 96 )  
    Related Articles | Metrics
    As Meishan Mining Company has a vertical drop of approximately 350 m from the southeast well to the underground of -303 m,such a high drop conveys the finished concrete,which easily causes the problem of segregation of the concrete,which directly affects the compressive strength and slump of the finished concrete.And the rebound rate of shotcrete support,etc.,causing the pipeline to meet the safety requirements of underground mining production.In order to further improve the safety strength of roadway support,Meishan Iron Mine introduced a new type of cementitious material,water slag micropowder,and used water slag micropowder to replace part of the cement in shotcrete support in order to improve the technical indicators of concrete.Optimize the technical requirements for the material of the southeast well,the installation plan of the pipeline,the layout of the pipeline,the diameter of the pipeline,and the control of the first discharge,etc.,in order to solve the problem of segregating the concrete in advance,and determine the material of the pipeline and the The detailed parameters of the installation plan,the layout of the pipeline,the diameter of the pipeline,and the amount of material to be discharged at one time,and then to explore and optimize the technical parameters of the proportion of the new cementitious material,so that the pipeline can transport the compressive strength,slump and The rebound rate index of shotcrete support meets the design requirements,and the concrete transported by the pipeline meets the safety requirements of underground mining production operations.
    Application of Roadway Retaining Technology along Goaf in Fully Mechanized Face Without Coal Pillar
    Yuan Cunfa
    2020, 36(05):  33-36. 
    Asbtract ( 74 )   PDF (1857KB) ( 85 )  
    Related Articles | Metrics
    In order to ensure the safe and efficient mining of the 8201 coalfree pillar fully mechanized coal mining face,improve the stability of the roof of the roadway along the goaf,and prevent the roofing of the roadway from breaking and falling,through technical research,the 8201 coalfree pillar fully mechanized mining face is reasonably analyzed during the mining,the main technical problems existed,and the presplitting blasting cutting pressure relief technology was proposed for the roof of the empty roadway (5201 roadway),and the "flexible mold pouring+stepping direction JW anchor cable hanger+truss anchor cable" was adopted."Support" combined support technology,based on the actual application effect,the cutting roof pressure relief technology effectively prevents the mining face's recovery stress from transmitting to the side of the empty roadway,preventing the sinking and crushing of the roof along the empty roadway; and the traditional gangue device Compared with the joint support technology,the cost is low and the construction process is simple,which effectively prevents the gangue and protects the roof,and effectively prevents the damage of the leading concentrated stress on the roadway during the mining of the working face.The roof settlement in the advanced stress area is controlled below 0.15 m.
    Study on the Evaluation of Mineral Resource Supply Capacity Basing on FAHP Method
    Hu Cong Liu Chao Wang Zhao
    2020, 36(05):  37-43. 
    Asbtract ( 79 )   PDF (1807KB) ( 99 )  
    Related Articles | Metrics
    In order to utilize resources reasonably and improve the utilization rate and the quality of mining development,it has important theoretical and practical significance to demonstrate and evaluate the supply capacity of mineral resources scientifically.This paper has constructed the evaluation model of the supply capacity of mineral resources basing on the fuzzy level analysis method (FAHP) ,which combines the qualitative and quantitative methods.And taking the historical data of cobalt resources from 2006 to 2015 as an example,the supply capacity of cobalt resources is analyzed.Meanwhile the resource endowment，supply - demaond market and political environment are taken as the evaluation criterion.Through analyzing the evaluation indexes，the evaluation value of the supply capacity of cobalt resources is below 1，and the downward trend is shown year by year.It shows that China's supply capacity of cobalt resources is on the weak side，and it will remain at a low level in the next few years.
    Practice of Recovery of Gently Inclined Ore Body in Meishan Iron Mine
    Yang Bing
    2020, 36(05):  44-46. 
    Asbtract ( 58 )   PDF (2465KB) ( 103 )  
    Related Articles | Metrics
    Aiming at the problems of mining gently inclined ore body in Meishan Iron Mine,to optimize the design of the production exploration,gently inclined ore body occurrence condition is determined.according to the ore body occurrence condition,optimize the mining structure parameters,and determine the blasting parameters of matching.Numerical simulation analysis is carried out of slowly inclined ore body pillar recovery stress distribution of tunnel,determine reasonable specifications of tunnel.Using smooth blasting technology to reduce the disturbance and damage of blasting to surrounding rock ,and the research is carried out to solve the process problem.The effective recovery of gently inclined ore body resources is realized.
    Research and Application of II Middle Orebody Drawing Model in Huashugou Mining Area of Jingtieshan Mine
    Ma Yanping Tian Honghai Chen Yongqi Xu Yanfeng
    2020, 36(05):  47-50. 
    Asbtract ( 61 )   PDF (2250KB) ( 104 )  
    Related Articles | Metrics
    The orebody in the second orebody of Huashugou mining area is thin,and the orebody is very irregular.The shortcut mining route is perpendicular to the direction of the orebody,and the ore recovery rate of the current drawing mode (cutoff grade) is low and can not reach the planned value,the main reason is that the drawing mode does not match with the stoping technology.According to the principle of ore drawing and the difficulty degree of ore recovery,the combined ore drawing mode is put forward,in which the residual area in the footwall is controlled by the total amount of ore drawing,the required recovery rate is 85% ,and the middle part is mined by the cutoff grade,it is required that the ratio of the surrounding rock of the Zhangzi face should be controlled within 40.00%.The ore drawing model has been applied in other orebodies of Jingtieshan mine more mature,"loose ore" to achieve blasting compensation space can be.In order to prove the rationality of the above ore drawing mode,the laboratory ore drawing study was carried out.The comprehensive recovery rate reached 81.48% and the dilution rate was 10.00%.Through 4 years'practice,good results have been achieved in 2 865~2 835 m of orebody II in huashugou mining area.
    UDEC Simulation of the Determination of High Pulling Lane Layers in Top Coal Mining
    Zhou Lixin Cui Honglei
    2020, 36(05):  51-53. 
    Asbtract ( 68 )   PDF (2144KB) ( 93 )  
    Related Articles | Metrics
    In order to get the reasonable position of the high hole in the top plate of the composite mining roof，using the 2601 working face of a certain mine as the engineering background，the numerical calculation software UDEC was used to simulate the mining of the top coal，and the expansion and deformation evolution laws during the movement of the top plate rock formation were obtained.Based on the above laws,it is determined that the top plate high drilling arrangement is located in the range of 17~22 m above the top plate of the 2601 working face.The field verification shows that the gas extraction concentration is high and the flow is stable.
    Research on Supporting Technology of a Layered Roof in a Mine
    Wu Caiwu Xiang Hailong Wu Heping
    2020, 36(05):  54-59. 
    Asbtract ( 75 )   PDF (1672KB) ( 98 )  
    Related Articles | Metrics
    In order to determine the supporting mode of a minelike layered roof，firstly，by understanding the engineering geology of the surrounding rock of a mine roof and the basic characteristics of the surrounding rock，the mechanism of the layered roof of the mine is analyzed，and a layered roof is obtained.The general destruction mode.Then the ore stability of the mine is combined with the engineering practice，and reasonable structural parameters of the stope are proposed.The controlled blasting technology is used to maximize the integrity of the layered roof.Finally，through the analysis and comparison of several different support methods，combined with the characteristics of the layered roof in the project，it is determined that the support of the layered roof is long anchor cable support.The support method can change the safety structure of the layered roof support and improve the integrity and carrying capacity of the roof support structure of the type.At present，this kind of support method has been gradually promoted and applied in the mine.At the same time，in view of the current status of roof management，the problems of mine roof management are summarized，and a reasonable and effective roof management system is formulated to improve the safety of mining operations.
    Optimization Analysis of Support Parameters of Coal Mining Roadway Under Goaf
    Liu Yanwu
    2020, 36(05):  60-63. 
    Asbtract ( 62 )   PDF (2077KB) ( 94 )  
    Related Articles | Metrics
    The distance between 5# coal seam and 4# coal seam in the upper part of Liulin Coal Mine is very small,the average thickness of the roof is 3.69 m,and the roof fluctuates greatly,the intensity is low,and it is easy to break,which makes it difficult to support the roadway.The supporting parameters of the roadway in the mining process of 5# coal seam are different from those in the general working face,so it is necessary to carry out targeted analysis.Based on this,through numerical simulation,the paper analyzes the deformation rule of surrounding rock under different roof bolt length,different bolt length,different bolt spacing and different bolt row distance under the condition that the overlying strata of 5# coal seam mining roadway are coal pillars and goaf.According to the numerical simulation results,considering the actual situation of the mining roadway,and based on the overall support structure of the roadway,the reasonable bolt support parameters of the 5# coal seam mining roadway are determined.
    Optimization Design of Relay Ventilation System for a Complex Mine in a Leadzinc Mine
    Wu Yabin, Zhang Zhibo, Wang Xiaogang
    2020, 36(05):  64-66. 
    Asbtract ( 72 )   PDF (1753KB) ( 93 )  
    Related Articles | Metrics
    A leadzinc mine has developed 19 middle sections after years of mining and development.The lowest middle section is nearly 1 000 m above the ground,the length of the roadway is about 5 km,the ventilation environment is complicated,the system has insufficient air flow,the polluted wind is connected in series,and the temperature at the deep working surface increases rapidly problem.In order to optimize the relay ventilation system of the mine,through the investigation and measurement of the current status of the mine ventilation system,the problems and influencing factors of the ventilation system were analyzed,and the optimization scheme of the relay ventilation system for the north and south partitions was proposed.The ventilation effect of the design parameters,the results show that: the system's air intake,return air volume and the wind speed of each roadway can meet the requirements of relevant regulations and specifications,each fan has a higher operating efficiency and a reasonable operating point.
    Research on Optimization of Upward Stratified Mining Technology
    Zhou Weiyong Hang Yang
    2020, 36(05):  67-69. 
    Asbtract ( 74 )   PDF (1651KB) ( 94 )  
    Related Articles | Metrics
    In mining,the upward stratified backfill mining method is widely used.In the traditional upward stratified backfill mining method,each shift operator enters the stope to drill rock to drop the mine.The local stability of the stope roof is difficult to guarantee,and the large block rate is high.It requires secondary crushing,low work efficiency and high construction cost.In order to overcome the abovementioned problems,the layerbylayer extrusion and smooth blasting mining methods are adopted,and the layerbylayer extrusion smooth blasting technology is used to perform extrusion blasting and then the surface roof smooth blasting.This method has a small block rate and low blasting cost;layerbylayer smooth blasting,the roof of the stope is relatively flat,reduces disturbance to the surrounding rock,maintains stability of the surrounding rock,and workers are safer in the stope.
    Analysis of Strength Reduction Method in Unloading Process of High Slope Excavation
    Zhang Qing, Cao Zuo Zhong
    2020, 36(05):  70-73. 
    Asbtract ( 102 )   PDF (1929KB) ( 91 )  
    Related Articles | Metrics
    In view of the problem that the deformation and damage of the slope seriously affect the safety production of the openpit mine in the process of openpit mining,a threedimensional model of the high slope of huangjiashan mountain in Taihe Openpit Iron Mine of Chongqing Iron and Steel Group Co.,Ltd.is established by using the numerical simulation method and MidasGTSNX software,and the numerical simulation analysis of the stressstrain,displacement and the change of the safety coefficient in the process of excavation and unloading is carried out.The results show that in the process of excavation and unloading of slope rock mass,with the deepening of stope and the increase of slope angle,the plastic stress zone gradually expands to the inside of slope rock mass,and the plastic strain breakthrough area is formed between the weathered broken layer and the upper moraine soil layer,and the failure surface is formed.After the excavation,shear failure occurs at the foot of the whole slope,tensile failure area is formed at the back edge of the slope top,and the moraine soil layer at the upper part of the slope forms "seat slip" sliding.The safety factor of slope decreases gradually with the downward excavation process,and finally reaches 1.15,which is slightly lower.In the later mining process,it is necessary to reinforce the weathered broken rock and moraine soil in the middle and upper part of the slope.
    Study on the Deformation Characteristics of Surrounding Rock in Fully Mechanized Caving Face with Large Mining Height
    Su Guoqiang
    2020, 36(05):  74-75. 
    Asbtract ( 74 )   PDF (2326KB) ( 90 )  
    Related Articles | Metrics
    In order to solve the problems of roadway support mode and parameter layout,this paper takes a coal mine in Shanxi Province as the research object,uses FLAC numerical simulation software and comprehensive method of field test to study the deformation characteristics of roadway surrounding rock in the fully mechanized top coal caving face with large mining height,and obtains the change law of surrounding rock displacement field in the fully mechanized top coal caving face with large mining height.Combined with the actual situation of the mine,the mine pressure is adopted.The monitoring system arranges measuring points in the air return roadway of the working face for industrial experiments and realtime monitoring and observation data,grasps the change state of the displacement of the surrounding rock of the roadway,guides the determination of the supporting form and parameters of the surrounding rock of the roadway,which has important theoretical significance.
    Study on the Structural Parameters of Upwardfacing Mining in Droken Zone of Zuoan Gold Mine
    Chen Qiongyu
    2020, 36(05):  76-78. 
    Asbtract ( 71 )   PDF (1928KB) ( 89 )  
    Related Articles | Metrics
    The ore body of the Zuoan Gold Mine of Otenko Co.,Ltd.is of high grade,but the ore rock is relatively broken,and the structure faults crisscross the mine area.The rock stability is not good,which leads to the difficulty of mining the ore body.At present,the gold mine adopts the upsidedown approach for mining in relatively fractured areas,in order to improve mining efficiency,it is a trend to study and explore the safety of large section approach.Midas/GTS is used to establish the 3D digital geometric model and grid division of the research object,and then it is imported into FLAC3D software to complete the calculation and analysis of three different sizes of roadway excavation.The safe and feasible approach section size was finally determined to be 4 m×4 m.
    Stability Analysis of Security Pillar in Underground Mining of a Quartz Sand Mine
    Wang Tingfei Wen Yiming
    2020, 36(05):  79-81. 
    Asbtract ( 61 )   PDF (2276KB) ( 90 )  
    Related Articles | Metrics
    Due to the limitation of product sales and surrounding environment,underground mining method is adopted in a quartz sand mine.The ore body is close to the ore boundary in the south and west，ensure the safety of the ore body in the process of mining,it is necessary to reserve the safety pillar in the ore section near the ore boundary.Therefore,FLAC3D numerical simulation software was used to analyze and compare the safety and stability of security pillars with different thicknesses for ore body mining,and finally determine the reasonable size of security pillars.
    Discussion on the Difference of Curtain Grouting in Mine and Curtain Grouting in Hydraulic Engineering
    Tao Wangxiong Jia Pengtao
    2020, 36(05):  82-84. 
    Asbtract ( 78 )   PDF (1590KB) ( 88 )  
    Related Articles | Metrics
    After the climax of water conservancy and hydropower construction in China,the technical specifications of curtain grouting in hydraulic engineering have been quite mature.In recent years,with our country vigorously advocating the construction of green mines,the curtain grouting technology in mine has been developed.Many water rich mines in China have adopted curtain grouting technology to prevent and control water.However,the development of the curtain grouting technology is still relatively lagging behind,most of the technical standards are borrowed from curtain grouting in hydraulic engineering.In view of the above,combined with some problems encountered in curtain grouting design and construction,differences between curtain grouting the mine and in hydraulic engineering were analyzed from aspects of grouting purpose,Waterproof standards and grouting parameters (hole depth,pressure,section length,etc.).In addition some suggestions for curtain grouting in mine are put forward.Curtain grouting in mine are unique in the above aspects and should be improved and perfected in the specifications and procedures.
    Numerical Simulation of the Stability of ShallowGoaf in Gongchangling Open Pit Iron Mine
    Zhang Zhongzheng Wang Leiming
    2020, 36(05):  85-87. 
    Asbtract ( 86 )   PDF (1957KB) ( 107 )  
    Related Articles | Metrics
    Due to historical reasons,irregular irregular mining and excavation of small mining sites around the Gongchangling Openpit Iron Mine have resulted in the formation of a large number of shallow goafs in the Dumu mining area.Due to production needs,Xiaobeigou in the Dumu mining area is required.The empty area is blasted.In order to ensure the safety of roller drilling equipment and personnel,the stability of the empty area needs to be evaluated.Taking into account the characteristics of the geological conditions and the stability of surrounding rocks in the goaf of Gongchangling Openpit Mine,FLAC3D numerical calculations were used to carry out the static calculation of Xiaobeigou empty area and the calculation and analysis of the roller cone rig above the empty area.Studies have shown that the maximum compressive stress value at the roof after the formation of the goaf is 2 MPa,and the maximum tensile stress value at the roof is 0.25 MPa.The compressive and tensile stresses generated are not very large; The monitoring point shows that the maximum vertical displacement of the surface does not exceed 10 mm; when the equivalent load of the roller cone rig is applied to the surface danger zone 1,the maximum vertical displacement is about 0.56 mm.The maximum vertical displacement is about 0.48 mm,and the roller rig will not have a significant impact on the surface subsidence.
    Application of Shallow Hole Retention Method in Xiaotuanshan Copper Mine
    Wan Xiangzong
    2020, 36(05):  88-90. 
    Asbtract ( 68 )   PDF (1606KB) ( 96 )  
    Related Articles | Metrics
    Research on One-time Dam Construction Technology in a Tailings Pond
    Wang Libin
    2020, 36(05):  91-93. 
    Asbtract ( 54 )   PDF (2156KB) ( 87 )  
    Related Articles | Metrics
    Comprehensive Utilization Study on a NbTa Placer Deposit in Africa
    Kong Longxi Sun Xupeng Zhang Pengsheng
    2020, 36(05):  94-97. 
    Asbtract ( 187 )   PDF (1847KB) ( 84 )  
    Related Articles | Metrics
    In order to improve the quality and grade of tantalumniobium concentrate,for the problem of similar specific magnetic susceptibility between tourmaline and tantalumniobium ore,similar dielectric constant with tin ore,which results in difficulty in subsequent separation process,combined process test of graded gravity separationmagnetic separationelectric separation was carried out.Niobium and tantalum concentrate containing Nb2O5 48.595%,Ta2O5 4.468% and recovery rates of Nb2O5 59.03% and Ta2O5 5734% were obtained.Through experiments,the mineral recovery rate has reached the domestic leading level,and other useful minerals have also been comprehensively recycled.
    Research Progress on Separation of Rare Earth and Fluorite Minerals
    Guo Chunlei
    2020, 36(05):  98-102. 
    Asbtract ( 77 )   PDF (1562KB) ( 108 )  
    Related Articles | Metrics
    In order to obtain highquality rare earth and fluorite concentrate,in view of the problem of mutual interference in the separation process,the research results of scholars in recent years were systematically reviewed,focusing on the separation process of the two and the research of flotation reagents.In the separation process,the single and combined separation processes are summarized separately; in the flotation reagents,the application and research progress of flotation collectors,inhibitors,and activators are mainly discussed.On this basis,the key point of separation technology of rare earth and fluorite and development of flotation reagents are expounded.
    Separation Beneficiation Technology Research of a Fine Grained and Lean Sulfur Gold Ore
    Sun Yafeng Wang Xiaozhao Bai Xinyue
    2020, 36(05):  103-105. 
    Asbtract ( 74 )   PDF (1766KB) ( 96 )  
    Related Articles | Metrics
    The gold in a gold mine in Shaanxi is mainly composed of micro and super micro natural gold particles,to resonable develop and utilize the gold resources,gravityflotation combined beneficiation was cjonducted according to the ore properties,gravity separation study was using Nielsen concentrator.The final obtained gold grade of gold concentrate 1 is 5 250 g/t,gravity tailings via flotation,gold grade of gold concentrate 2 is 41.17 g/t,total gold recovery is 95.45%,gold grade of tailings is 0.09 g/t.Compared with single process,application of combined process is benifit for obtain better metallurgy index,the resources can be better resonable develop and utilization.
    Optimization Test of AgPb Flotation Process for a GoldSilverLeadZincSulfide Ore
    Wang Chao Zhu Jun Yang Changbin Fan Qingjing
    2020, 36(05):  106-109. 
    Asbtract ( 64 )   PDF (1999KB) ( 90 )  
    Related Articles | Metrics
    In order to obtain high quality silverlead concentrate,test on highsulfur silverleadzinc polymetallic ore by asynchronous flotationcoarse ore concentrate regrind flotation,asynchronous fast flotationmiddlings ore regrind and stagespeed asynchronous flotationzincsulfur sequential priority flotation process.The test resluts show that: under the condition that the grinding fineness is -0.074 mm 70%,stagedspeed asynchronous flotationzincsulfur sequential priority flotation is better than the other two processes.The silver lead concentrate from the flotation process has a silver grade of 621 g/t,the silver recovery rate is 54.18%,the copper grade is 0.84%,the copper recovery rate is 34.62%,the lead grade is 6278%,the lead recovery rate is 89.42%,the zinc grade is 6.45%,and the zinc recovery rate is 5.83%.
    Comprehensive Utilization Practice of Secondary Resources from Zhanjiang
    Song Yifu
    2020, 36(05):  110-112. 
    Asbtract ( 72 )   PDF (1603KB) ( 100 )  
    Related Articles | Metrics
    In order to realize the efficient recycling of secondary resources in iron and steel enterprises,the problem of many harmful elements in secondary resources and differences in physical and chemical properties such as particle size,composition,and moisture are addressed.Zhanjiang Iron & Steel conducted research on the secondary resources directly allocated to the sintering production and the research on the production of the solid waste disposal center.When the use ratio of various secondary resources was well controlled,it had little effect on the production of the sinter production and solid waste disposal center.As a result,it is concluded that achieving efficient and comprehensive utilization of secondary resources is conducive to reducing enterprise costs and achieving environmental friendly.
    SolidificationStabilization of Heavy Metals in LeadZinc Tailings with Slag Cementitious Materials
    Hua Shaoguang, Liu Long, Yang Xiaojun, Quan Denghui
    2020, 36(05):  113-116. 
    Asbtract ( 64 )   PDF (1591KB) ( 93 )  
    Related Articles | Metrics
    Solidificationstabilization technology is the most important method to deal with heavy metals at present.Solidified materials is the key of this technology.In order to overcome the properties and costs defects of traditional solidified materials,arge quality of industry slag are used as main raw materials to prepare slag based cementitious materials,to solidify heavy metals in leadzinc tailings,and the strength of the solidified body and the effect of leadzinc ion solidification stabilization are investigated.The results show that the strength of slag based cemented leadzinc tailings at 28 d and 60 d reaches 6.40 MPa and 6.44 MPa,which meets the strength requirements of mine filling and mining.The leaching concentration of heavy metal lead is 0.012 mg/L(28 d) and 0.010 mg/L(60 d),which meets the limit value of heavy metal standard in class IV water in environmental quality standard for surface water (GB 3838—2002).The slag based cementitious material solidifies and stabilizes the heavy metal tailings,realizes the "waste treatment",and has a broad application prospect.
    A 300 t/d Industrial Test of a Low Grade Cassiterite Polymetallic Ore in Yunnan
    Deng Chunhu et al
    2020, 36(05):  121-123. 
    Asbtract ( 68 )   PDF (1840KB) ( 90 )  
    Related Articles | Metrics
    Study on Resource Security Strategy of Regional Bauxite in a Company
    Guo Mingming et al
    2020, 36(05):  124-126. 
    Asbtract ( 62 )   PDF (1871KB) ( 88 )  
    Related Articles | Metrics
    Reform Practice of Hecheng Mining Washing System
    Li Xiao et al
    2020, 36(05):  134-135. 
    Asbtract ( 59 )   PDF (1579KB) ( 139 )  
    Related Articles | Metrics
    Characteristics Analysis and Process Mineralogy Study of Katbaasu Gold Mineral
    Meng Qingpeng et al
    2020, 36(05):  136-139. 
    Asbtract ( 82 )   PDF (2123KB) ( 85 )  
    Related Articles | Metrics
    Application of Stirred Mill in Fine Grinding Operation in Gongchangling Concentrator
    Wang Yang et al
    2020, 36(05):  140-142. 
    Asbtract ( 66 )   PDF (1625KB) ( 93 )  
    Related Articles | Metrics
    Development and Application of Racing-Type Maintenance in Large Metal Mines
    Zhao Jianguo
    2020, 36(05):  143-144. 
    Asbtract ( 77 )   PDF (1543KB) ( 93 )  
    Related Articles | Metrics
    Experiment on Floatability of a Gold Ore in Guizhou
    Zhang Wenping
    2020, 36(05):  147-149. 
    Asbtract ( 48 )   PDF (1719KB) ( 96 )  
    Related Articles | Metrics
    Application of Beidou System in Masteel Highway Logistics Industry
    Hu Chuanlong Zhang Manru
    2020, 36(05):  158-160. 
    Asbtract ( 77 )   PDF (1863KB) ( 97 )  
    Related Articles | Metrics
    With the development of BDS construction and service capacity,diverse products have been widely used in the transportation industry,especially positioning and information interaction,which have been well applied in highway logistics.Steel highway logistics is mainly composed of three highway transportation,they are procurement,production and sales.Masteel highway traffic has nearly 50 million tons of material flow per year.As the general contractor of production logistics and sales logistics,masteel automobile transportation company owns more than 1 000 vehicles to serve masteel's various material transportation tasks.In order to ensure that the existing dispatching and monitoring system has met the requirements of masteel road logistics management,through exploring the application of beidou system in steel road logistics industry,the company comprehensively improves the level of vehicle supervision,personnel management,goods control,transportation optimization and information exchange to achieve a more intelligent and informative highway logistics in masteel.
    Application of Threedimensional Laser Scanning Technology in Slope Deformation Monitoring
    Dong Jianchun Han Ruiliang
    2020, 36(05):  161-163. 
    Asbtract ( 63 )   PDF (1634KB) ( 91 )  
    Related Articles | Metrics
    There are a large number of natural or manmade slopes in openpit mines,all of which have different degrees of potential landslide hazards.In order to ensure the safe of the slopes,it is necessary to conduct safety monitoring.In view of the shortcomings of traditional measurement methods,pplies 3d laser scanning technology to the slope deformation monitoring,studies the theoretical technology and data application analysis of the implementation of monitoring,realizes the effective deformation monitoring of the mine slope,and obtains the ideal monitoring results.
    Design and Research of Cutting Control System of Mine Cantilever Roadheader Based on PLC Control
    Xu Zhijun
    2020, 36(05):  164-166. 
    Asbtract ( 88 )   PDF (1671KB) ( 83 )  
    Related Articles | Metrics
    With the continuous improvement of control technology,the cutting control system of the roadheader can no longer meet the needs of the current equipment.Optimizing and improving the design of the cutting control system has become an important research direction at present.The working environment of the roadheader and the requirements of the cutting control system are analyzed in detail.The design research of the cutting control system is carried out,and the system is further verified by the application.The operation reliability of the control system is verified,and the operation efficiency and safety of the cutting part and the whole machine of the roadheader have played a positive role in improving.It also provides a reference for the improvement of the roadheader in the later stage.
    Operation and Maintenance of Mobile Flexible Cable Used in Openpit Mine and Its Joint Treatment Measures
    Wang Xiaowei Zhang Mengli
    2020, 36(05):  167-168. 
    Asbtract ( 82 )   PDF (1582KB) ( 87 )  
    Related Articles | Metrics
    The main equipment in openpit mine excavator,rotary drills with the mining location changes,the power supply cable to use mine mobile flexible cable.The cable will be dragged along with the device during use.In order to reduce the damage to the inner core and Outer Sheath of the cable due to its length,weight and friction with the ground and stones during the cable movement,from the technical,management of the two aspects of cable use for maintenance and norms.After standard cable maintenance use,cable joints with vulcanization treatment and other measures cable damage is greatly reduced ,cable service life is improved,and Good reliability of power supply is obtained.
    Application of CY-R40C Cutting Slot Patio Drilling Rig in Lilou Iron Mine
    Liu Xiaoqiang
    2020, 36(05):  169-171. 
    Asbtract ( 83 )   PDF (1707KB) ( 107 )  
    Related Articles | Metrics
    Application and Exploration of Mine Underground Roadway Solid Measurement Method
    Cheng Huawei et al
    2020, 36(05):  172-174. 
    Asbtract ( 57 )   PDF (2457KB) ( 83 )  
    Related Articles | Metrics
    A Ccoal Mine Information Production Management System
    Zhao Difei
    2020, 36(05):  175-176. 
    Asbtract ( 122 )   PDF (1790KB) ( 117 )  
    Related Articles | Metrics
    Research on the Manufacture of Space Curved Dumping Rail of Side Bottom Dumping Tramcar
    Li Mingjing et al
    2020, 36(05):  180-181. 
    Asbtract ( 58 )   PDF (1802KB) ( 91 )  
    Related Articles | Metrics
    Application of Twin-screw Lifting Ultrasonic Cleaning Device in Ceramic Filter
    Gong Jing
    2020, 36(05):  185-186. 
    Asbtract ( 84 )   PDF (1658KB) ( 106 )  
    Related Articles | Metrics
    Modification Practice of Gearing Lubrication System for Ball Mill in Meishan Mining
    Chu Wei et al
    2020, 36(05):  192-194. 
    Asbtract ( 49 )   PDF (2107KB) ( 86 )  
    Related Articles | Metrics
    Application of Arc Light Protection Device in High Voltage Switch Cabinet of Coal Mine
    Sun Erting
    2020, 36(05):  195-197. 
    Asbtract ( 64 )   PDF (1683KB) ( 93 )  
    Related Articles | Metrics
    To analyze the application effect of Arc light protection device in high voltage switchgear in coal mine.The parameters and harm of arc light were studied,and the ARC light protection technology and common protection measures were understood.On this basis,taking Nantun coal mine as an example,the implementation scheme and installation mode of Arc light protection device are determined.After installing arc protection device in Nantun Coal Mine,the ARC light protection device can complete the work of data sampling,displaying,calculating,tripping,detecting the abnormal communication of the external expander,and obtain the current data of the merged unit in time,remote acquisition of current signals,ARC light sensor in the event of failure can increase the intensity of light,for the protection device to transmit analog light signals,timely solution.Installing Arc light protection device in high voltage switchgear in coal mine can avoid short circuit,ensure safe operation of power supply facilities and control budget cost reasonably.
    Application Research on Ventilation and Dust Removal Technology of Coal Transport Underpass in Anjialing Coal Storage Yard
    Zou Changfu
    2020, 36(05):  198-201. 
    Asbtract ( 60 )   PDF (2242KB) ( 87 )  
    Related Articles | Metrics
    Aiming at the current status of the production process of the coal conveying underpass,a combination of ventilation and closeddust extraction and purification technologies,combined with closed dry fog dust reduction and other technical measures,was implemented to achieve comprehensive management of dust in the coal conveying underpass,and online monitoring of dust concentration.The system is intelligently controlled to achieve remote continuous monitoring and monitoring of the ventilation and dust removal system of the coal conveying dark tunnel.The total dust concentration at the location of the 5 m operator on the downwind side of the coal conveying dark tunnel transfer point has been reduced from 380.8 mg/m3 to 198 mg/m3.Reached 94.8%,the concentration of respirable dust decreased from 96.7 mg/m3 to 8.4 mg/m3,the dust reduction efficiency reached 91.3%,and the dust reduction effect was good.It effectively solved the problem of dust pollution in the dark tunnel of coal transportation and the reloading and dropping point.The dust prevention and control in the coal conveying underpass provides a reference basis.
    Optimization of Mine Ventilation System in Wulonggou Gold Mine
    Zhang Xiongtian Zhu Wenzhi Wang Hufu
    2020, 36(05):  202-204. 
    Asbtract ( 83 )   PDF (1767KB) ( 90 )  
    Related Articles | Metrics
    Wulonggou Gold Mine is an old mine with many years of production.Due to many years of production in the mine,the ventilation system is relatively complex,and there are many underground diesel equipment.The ventilation in the middle and section of the current production is not smooth,and there are phenomena such as channeling and running wind.The mine ventilation system is divided into 3 320~3 270 m ventilation system,3 270~3 220 m ventilation system and 3 220 m ventilation system.Ventsim software was used to simulate the ventilation process of the new scheme.Practice has proved that the optimized ventilation scheme greatly improves the mine ventilation conditions and the mine ventilation efficiency.
    Random Forest Inversion Method for Mine Ventilation Resistance Coefficient
    Li Shengnan, Gao Ke, Liu Yujiao, Zhou Hui Liu Zeyi
    2020, 36(05):  205-207. 
    Asbtract ( 97 )   PDF (1615KB) ( 96 )  
    Related Articles | Metrics
    In order to achieve "less measurement" or even "exception" of the mine ventilation resistance coefficient,and to improve the accuracy of the mine ventilation system simulation,a method for inversion of the mine ventilation resistance coefficient based on random forests was established.Eleven indexes related to the cross section of the roadway,the roadway perimeter and the support form that mainly affect the roadway ventilation resistance coefficient are selected as the inversion indexes of the ventilation resistance coefficient of the random forest mine.Through training and learning of 115 measured roadway parameters,and using 5 roadways as verification samples,the verification results are basically consistent with the measured results.It shows that the mine ventilation resistance coefficient inversion based on random forest algorithm has better accuracy and stability.
    Application of Vertical Horizontal Combined Gravity Drainage in Seepage Reduction Engineering
    Long Teng Pan Xinyu
    2020, 36(05):  208-211. 
    Asbtract ( 78 )   PDF (1621KB) ( 86 )  
    Related Articles | Metrics
    In order to solve the problem of super high saturation line of the dam body obtained from the investigation of potential safety hazards of Yinshan mining tailings pond of Jiangxi Copper Group,and to ensure the stability of the dam body,combined with the actual situation of the tailings pond site,on the basis of fully analyzing the characteristics of different drainage methods,the vertical horizontal combined self flow drainage method is proposed,and an economic,reasonable and feasible technical scheme is formulated.Through the observation data table of saturation line It is clear that after the implementation of the drainage scheme,the saturation line of the dam body has obviously decreased,and the local seepage and swamping of the dam body have significantly improved,effectively ensuring the stability of the dam body.
    Floor Heave Mechanism and Control Technology of Softrock Roadway in Isolated Island Face
    Li Chunhuai
    2020, 36(05):  212-215. 
    Asbtract ( 101 )   PDF (1793KB) ( 88 )  
    Related Articles | Metrics
    The 8410 working face of Yangmei No.5 Mine is an isolated island working face.The return air tunnel is driven along the roof.The floor is soft rock.The roadway is easily affected by the overburden rock gravity and mining movement.In order to prevent floor heavefrom endangering safety production,a thin plate theory is used to establish a mechanical model for the floor of a soft rock roadway,and the stress conditions and instability critical conditions of the bottom rock layer are derived.Then,the mechanism of soft rock bottom drum on the island working face is proposed.Governance provides the theoretical basis,and provides targeted drum control and governance related technologies to provide reference for the governance of similar drums.
    Analysis on Competitive Strategy of Coal Industry in Liupanshui City
    Miao Zeng Feng Shuo Tang Jianquan
    2020, 36(05):  216-219. 
    Asbtract ( 77 )   PDF (1600KB) ( 93 )  
    Related Articles | Metrics
    China is rich in coal,poor in oil and gas. Coal is the most important and the primary energy in China.However,in terms of the current competitive energy market environment, the development of China's coal industry has encountered difficulties.In order to better develop the coal industry in Liupanshui area,this paper combines the theory of competitive strategy and the development of coal industry in Liupanshui City,uses PEST analysis and Porter five force model to analyze the coal industry in Liupanshui City,and obtains the ecological coal development strategy model of integrating resources,combining its own advantages and great force to attract talents, and finally achieving industrial transformation.The analysis results can provide theoretical support for improving the competitiveness of Liupanshui coal industry.
    Study on Slope Stability Coefficient under High Cold
    Pan Zhe et al
    2020, 36(05):  220-223. 
    Asbtract ( 74 )   PDF (1853KB) ( 88 )  
    Related Articles | Metrics
    Construction method of outlet section of flood discharge tunnel of a tailings pond
    Dai Shengwei
    2020, 36(05):  239-240. 
    Asbtract ( 76 )   PDF (2398KB) ( 86 )  
    Related Articles | Metrics
    The rock at the outlet section of the flood discharge tunnel of the tailings pond is broken and does not meet the construction conditions for excavation ，In order to ensure the safe completion of the construction of unstable rock stratum at the exit section of the flood discharge tunnel,"Artificial roadway" formed by advanced steel arch concrete temporary support,Then the top of "artificial roadway" is backfilled with plain concrete to form "artificial slope",and Then adopt the method of short excavation and short masonry to carry out excavation and masonry operation.This construction method can be used safely and effectively for the construction of Unstable Strata at the exit of flood discharge tunnel.
    Yilong Coal Industry 11021 Roadway Support Technology Research
    Shi Zhanfeng
    2020, 36(05):  241-243. 
    Asbtract ( 62 )   PDF (1825KB) ( 95 )  
    Related Articles | Metrics
    Practice of Capacity Expansion of Yangmeisijiazhuang Coal Preparation Plant
    Du Fengtao
    2020, 36(05):  251-252. 
    Asbtract ( 57 )   PDF (1535KB) ( 91 )  
    Related Articles | Metrics
    Research on Automatic Control of Thickness of Permanent Magnet Ferrite Products Wet Pressed
    Qiaoling Zhou et al
    2020, 36(05):  253-254. 
    Asbtract ( 49 )   PDF (1587KB) ( 90 )  
    Related Articles | Metrics
    Practice of Green Transportation of Concentrate Powder Railway in Gushan Mine
    Wang Huan et al
    2020, 36(05):  255-256. 
    Asbtract ( 57 )   PDF (1543KB) ( 86 )  
    Related Articles | Metrics
    The Process Research and Application of WetPreselection Yanshan Iron Mine
    Liu Yongsheng et al
    2020, 36(05):  257-258. 
    Asbtract ( 68 )   PDF (1546KB) ( 91 )  
    Related Articles | Metrics