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Table of Content

    15 April 2014, Volume 30 Issue 04
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    Research on the Sustainable Development Strategy of the Hunan Nonferrous Metals Industry
    XIE Guang-Cai, LIAO De-Hua, ZENG Wei-Ping
    2014, 30(04):  1-3+9. 
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    The basic situations of Hunan nonferrous metal industry are analysed in detail. According to the characteristics of Hunan nonferrous metal industry such as unreasonable industrial structure, low degree of intensive industry, weak innovation ability, low level of international operation, some sustainable development strategies are proposed from the perspective of upgrading the industrial structure, technology, progress of science and technology, cultivation of talents, development of strategic emerging industry, comprehensive utilization of resources, regenerated metal recycling, environmental protection.
    Development and Utilization of the Emerald Ore in Zambia
    WU Hai-Jun
    2014, 30(04):  4-9. 
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    The types of emerald ore deposit are introduced, basic situation of pneumatolytic hydrothermal type deposits, exploration process, planning and designing of small and medium-sized open-pit mine, sorting and rating of emerald ore in Zambia are analysed in detail. The exploration method of Miku mine is recommended, unpredictability and high risks of Exploring the emerald mine are analysed. The research results of this paper can provide some reference for the emerald ore exploration works in other countries and regions.
    Application on the Open-air Deep Hole Blasting Caving Method in the Underground Mined-out Area
    ZANG Long, JIA Chuan-Peng, ZHANG Shi-Lei
    2014, 30(04):  10-14. 
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    Yuanjiacun Open-pit iron mine has a lot of mined-out areas by disordered underground mining after many years. According to the characteristics of underground mined-out area of Yuanjiacun Open-pit iron mine, the 1740-10-7# mined-out area is processed by the blasting caving method at a time by hole-by-hole blasting based on the Orica high precision millisecond non-electric detonator. The research results show that, the method of this paper can eliminate the potential safety hazard and ensure the production progress of open-pit iron mine at the same time.
    Development Scheme Optimization Selection Based on the Analytic Hierarchy Process Method and Grey Correlation Analysis Method
    WANG Qi, ZHANG Jian-Hua, LIU Jun, XIA An-Xiong
    2014, 30(04):  15-19. 
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    The analytic hierarchy process method and grey correlation analysis method are adopted to do research on the optimization selection of the development scheme. In order to acquire the prefect development scheme, the optimization model is built based on the 17 important evaluation indicators. The research results show that, using the method of selection of development scheme has a certain scientific and accurate, the optimization selection method of this paper can provide some reference for the some relative questions.
    Discussion on the Mining Method of Slowly Inclined Medium Thick and Thick Ore Bodies
    LIU Zhe, JIN Xiao-Gang, LIU Pei-Zheng
    2014, 30(04):  20-21+37. 
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    Slowly inclined medium thick and thick ore bodies mining has always been a technical problems in the mining industry. The surface of Zhangjiaxialou iron mine is not allowed to collapse and the ore grades is low. According to this situation, the sublevel open stopping method based on ordinary scraper and remote control scraper is proposed. By technical and economic comparison, if the remote control scraper is adopted, some mining engineerings such as sublevel mine roadways and ore loading roadways, the mining-cutting ratio of the remote control scraper is 33.9% of that of ordinary scraper, the cost of tonnage ore is reduced to 13.98 yuan. So the sublevel open stopping method is technically feasible and economically rational.
    Application of Low-temperature Resistant BK425 Collector in a High-magnesia Collophane
    LI Song-Qing, SHANG Yan-Bo, WEI Ming-An, ZHU Yang-Ge
    2014, 30(04):  22-25. 
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    Research on application, comparing with the conventional collector, of low temperature resistant BK425 collector in reverse flotation of high-magnesia cellophane for magnesium reduction was carried out. The grinding fineness, dosage of sulfuric acid, dosage of BK425, temperature, etc. on the influence of magnesium reduction was researched with fixed additional conditions. The results showed that BK425, has the best performance on reverse flotation of magnesium reduction and scarcely affected by temperature, is a promising collector. Phosphorus concentration, with P2O5 grade of 28.76%, P2O5 recovery of 91.78%, MgO content of 1.17% can received through one rough, one cleaning, and one scavenge closed-circuit flotation process, with the grinding fineness of 70% passing 0.074 mm, BK425 dosage of 600 g/t, sulfuric acid as regulator.
    Comprehensive Utilization of Rare Earth and Recycling of its Tailings
    WANG Lin-Xiang, ZENG Qin
    2014, 30(04):  26-28+33. 
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    Using granite rare metals, mainly of niobium and zirconium, in Inner Mongolia as research object, the optimal tailings discarding mode and feeding size was determined through magnetic separation, gravity separation and selective grinding tests according to the mineralogy properties. Comprehensive recovery of the ore was achieved through magnetic separation, flotation and gravity separation united process. The results showed that magnetic separation, flotation and gravity separation united process solve the problems of valuable minerals distributed in fine grains and hard to liberate, and low recovery of valuable minerals. Rare earth concentrate with REO grade of 38.005% and recovery of 63.26%, niobium concentrate with Nb2O5 grade of 7.752% and recovery of 7.752%, zirconium (hafnium) concentration with Zr(Hf)O2 grade of 53.554% and recovery of 53.554% was achieved separately.The useful minerals in the ore such disseminated extent is small, hard monomer dissociation, the shortcomings of comprehensive recovery rate is low, and eventually won the.
    Influence of Different Feeding Size Distribution on Reverse Flotation
    WU Wen-Hong, LUAN Ling
    2014, 30(04):  29-33. 
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    Based on the research of various distribution of flotation feeding size on the reverse flotation process and results, it is concluded that large quantity of middlings will produced, both the reverse flotation process and indicators are destabilize, when the content of poorly liberated inter-particles is high in the feed. In comparison, when the grain size distribution of feeding is uniform, iron ore is well liberated, few of middlings quantity from reverse flotation, stability and balance of the reverse flotation process will easily achieved.
    Divison of Geologic Structures and Rock Groups of Fuxingchun Gold Deposit
    WANG Chang-Jin, JIN Hai-Bin, LIU Zhong-Tian, GE Yong-Sen, WANG Zhen-Yu, HU Jun-Hai
    2014, 30(04):  34-37. 
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    The fault structures of Fuxingchun gold deposit is well developed.The main ore-controlling structures is developed in the layered structures of the contact zone of marble of Zhenzhumen formation and schist of Dalizi formation,and northwestern,northeastern brittle shear fault zones.Rock structural plans have great impact on the rock mechanical property,so it can be divided into II,IIIand IV structural plane.The engineering geological petrofabric is divided into the Quaternary lax rock,harder-strong thin thick metamorphic rock,hard lump carbonate rock and hard lump volcanic rock in line with the lithology and rock mechanical property.The well developed bedding,foliation and joints,and poor integrity and engineering geological conditions of the rocks in the distribution area of hard lump carbonate rock group.Therefore,layers of the rocks should be studied in the future so as to deal with the engineering geological problems in the mining area.
    Application of Measurement While Directional Drilling Technology in Preventing and Controlling the Water disasters in Coal Mine
    SHI Hai-Qi
    2014, 30(04):  38-41. 
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    Measurement while directional drilling technology has the characteristics of high drilling efficiency and high accurary of borehole trajectory control,therefore,it is widely applied to extract the gas in coal mine and explore the geological structure of mine.Measurement while directional drilling technology is tend to be used to deal with the water disasters in coal mine in recent years.At present,rotary drilling is main drilling construction method to prevent and control the water in coal mine,but the construction efficiency of rotary drilling is low,grouting reinforcement scope of rotary drilling is small and reinforcement effects are not so good.The equipments of measurement while directional drilling and drilling technology are discussed so as to do some research on the application of measurement while directional drilling technology in the process of grouting reinforcement the coal seam floor in Zhaogu No.1 coal mine.The research results prove that,measurement while directional drilling technology has the advantage of high construction efficiency, wide reinforcement scope and perfect grouting effect.
    Application and Research on Automatic Monitoring and Early Warning System of Tailings Dry Beach
    LI Dao-Ming, YU Guo-Ping, SHEN Lou-Yan, HU Hu, LU Jian-Jing
    2014, 30(04):  42-44. 
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    Firstly，the structure and function of atomation and early warning system of tailings dry bearch are analysised in detail.Then,the principle of automatic mnitoring and early warning of the indexs (elevation,length and slope)of tailings dry beach based on the laser measurement technology.Finally,compared with the application situation of tailings dry beach monitroing methods,the advantages of the automatic monitoring and early warning system are summarized.
    Stability Analysis on Tailings Dam under the Action of Vibration Waves
    HU Xun, BIAN Ning-Dong, ZENG Xiao-Xiang
    2014, 30(04):  65-68. 
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    According to the working conditions, the site vibration test method, dam risk analysis method, seepage simulation method and stability analysis method are adopted to analyze the tailings dam stability under the action of blasting vibration waves, and determine the main factors that affect the safety of tailings dam, and determine the security boundary conditions of tailing dam under different operating conditions. The research results indicate that, under the proposed vibration conditions the tailings dam is not safe when vibration velocity is 12 cm/s, and 6.0 cm/s is the maximum security allowed vibration velocity.
    Reformation Design of North Wing Ventilation System of Xishan Mining Area of Sanshandao Gold Mine
    WANG Ming-Bin, HE Shun-Bin, LI Wen-Guang, LI Wei, ZHOU Wei
    2014, 30(04):  69-71+78. 
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    Along with the increasing of total annual mining, some questions are emerging, such as the total volume air of north wing ventilation system is lacking, stope operation ventilation disorders. Combing with the exploration conditions and characteristics of the structure of mine, the ventilation ability of north wing main shafts, air distribution of middle working area, machine station setting, fan optimization selecting, ventilation structure setting are comprehensive researched. The reformation design scheme of north wing ventilation system is proposed and the reformation design scheme is simulation calculated so as to predict the ventilation effects.
    Research on the Long-distance Combined Ventilation Technology based on Large Diameter Borehole and Wind Libraries Transition
    YANG Ya-Ping, MENG Jie
    2014, 30(04):  72-74+82. 
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    In view of the low air volume, high dust concentration, exhaust gas accumulation of diesel engine and high temperature of the signal machine ventilation pattern of the 2 600 m tunneling faces of the Longshou mine Ⅰ# mining area, the combined ventilation technology is proposed based on large diameter borehole and wind libraries transition so as to calculate the key technical parameters. Contrastive analysis between the combined ventilation technology and signal machine ventilation pattern are done from the perspective of the technical feasibility and economy. The analysis results show that, the performance of the former is better than the later. Besides that, the research results has the guiding significance for long-distance tunneling ventilation in the future.
    Research on the Treatment Method of Single-layer Mined-out Area of Sandaozhuang Mine Area
    YANG Sen-Lin, XU Ying, ZHANG Hong-Zhao
    2014, 30(04):  75-78. 
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    The treatment methods of signal-layers mined-out areas of Sandaozhuang open-pit mining area are introduced in detail, and the safety parameters of deep hole caving method are given. The construction requirements of cavity detection, site preparation, perforation, blasting and shovel loading are regulated. The research results of this paper solve the problems of mined-out areas treatment and residual ore recycling.
    Design of the System of Tailings Transportation and Automatic Filling of Zhangjiawa Iron Mine
    XU Geng-Ju, WANG Bing
    2014, 30(04):  96-98+102. 
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    The system of tailings transportation and 1# orebody filling station are designed by adopting of the mature and reliable instrumentation and advanced control method.The filling station,diaphragm pump room,valve room are integrated to monitor and operate uniformly,so as to achieve the high degree of automation by profibus DP and wireless communication technology.It is concluded that the above research results can reduce the labor intensity of workers and the filling cost,besides that,it also can improve the quality of the high concentration of filling slurry to obtain good filling effect.
    Research on the Selection of the Specifications and Types of Mine Trucks
    MU Chuan-Wei, YANG Wei-Jing
    2014, 30(04):  99-102. 
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    In open-pit metal mine truck type and model choice are of great significance. Model selection is a complex work, and there are many factors to consider. Taking a mine as an example, determine of the specifications of mine trucks and selection of the types of mine trucks are analysed, and the principles, methods and steps of determining the specifications of mine trucks. Besides that, the attentions of selecting the mine trucks makers and types are analysed from the perspective of technical performance, technological economy and traffic safety so as to provide some reference for making scientific decisions.