Table of Content

15 April 2011, Volume 27 Issue 4

Previous Issue    Next Issue

Wide Drift Physical Drawing Simulation Experiment in Pillarless Sublevel Caving Method

ZHANG Zhe, YU Yi-Song, LIU Peng-Bo

2011, 27(4):  1-3. 

Asbtract ( 1589 )  

Related Articles | Metrics

Pillarless sublevel caving mining method has been used widely in the mine both at home and abroad, which is difficult to control the loss of ore dilution in the practical production. However, the loss and dilution index depend on shape of falling ore ellipsoid. So it is significant to research the falling ore ellipsoid shapes to control the ore loss and dilution. Combined with the project of stope structural parameter optimization of Shouyun iron ore, design parameter of stope was analyzed. Through indoor physical simulation test, the changing laws between drift width and ore ellipsoid shape was uncovered.

null

WANG Rui, ZHAO Kun, DAN Qiang

2011, 27(4):  4-6+13. 

Asbtract ( 1358 )  

References | Related Articles | Metrics

null

Research of Sublevel Open and Subsequent Filling Mining Method based on Dimine Software

ZHU Ming-Hai, WANG Li-Guan, XIAO Ying-Cai, LI Ning

2011, 27(4):  7-10. 

Asbtract ( 1683 )  

Related Articles | Metrics

Taking the experiment stope of a metal mine as example and combining with digital mine software DIMINE, application of 3D visualized modeling technology in this mine is introduced. On the basis of building model of geologic body and engineering entity,key points of 3D mining design realization in building digital mine are studied. Cutting groove blasting design and stope blasting design in the DIMINE software are introduced in detail, and the results of blasting design are output.

Research on Mechanism of Blast Hole Pre-split Orientation and Engineering Test

LIU Xiao-Wei, ZHANG Shu-Wei, YANG Xiao-Ke

2011, 27(4):  11-13. 

Asbtract ( 1647 )  

Related Articles | Metrics

Blast hole pre-split orientation(BHPO) is proposed based on the analysis of rock blasting mechanism and pre-engineering experiments. It's a kind of new type pre-split blast model which combines the advantages from large hole size deep hole pre-split blast in the open pit and normal pre-split blast. It's the new improved technology of pre-split blast at present. The BHPO method is based on modern mechanics which could do better on slope protection.

Support Optimization of Roadway Surrounding Rock based on Numerical Simulation

SONG Kai-Dong, CHEN Guang-Ping, JIANG Chang-Min, SHU Heng-Lei

2011, 27(4):  14-17. 

Asbtract ( 1621 )  

Related Articles | Metrics

Taking the Baixiangshan iron ore as the engineering background, aimed at the problems like the large distribution of surface water within the mine,complicated hydrogeology condition of deposit, stability of roadway affected largely by water,many joint fissure and structure in surrounding rock, primary roadway support proposal was optimized. Combining with different characteristics of surrounding rock and geological condition, technology of anchoring and shotcreting unite support and secondary coupling supporting system were adopt on optimized support. Through the check of numerical simulation,the result of optimized support plan was good.

Study on the Methods to Reduce the Unit Explosive Consumption of Medium-length Hole Blasting

ZHOU Nan, WANG De-Sheng, WU Ying-Tian, SUN Chao, CHENG Li-Nian

2011, 27(4):  18-21. 

Asbtract ( 1562 )  

Related Articles | Metrics

Through the analysis of factors which influence unit explosive consumption, an unit explosive consumption classification method based on weighted clustering analysis is proposed. Then put forward effective measures of increasing the number of free surface, spacing pattern parameter of large hole distance and small resistance line,adjusting explosives structure is put forward to achieve the goal of reducing the unit explosive consumption of medium-length hole blasting. At the same time combining with the scientific research task of mined-out area disposal in Shouyun iron ore, demonstrated effectively the application of effective measures have reduced the unit explosive consumption of medium-length hole blasting.

Analysis on Cable Anchor Support Effect of Floor Cross Mining Roadway

TIAN Lei, XIE Wen-Bing, GU Ji-Liang, LOU Pei-Jie, WANG Qi-Zhou

2011, 27(4):  22-24+42. 

Asbtract ( 1703 )  

Related Articles | Metrics

Through the analysis of measured data on roof abscission layer, surface displacement, deep displacement and forced state of bolt and cable of Ⅱ28 mining area up roadway, surrounding rock deformation law of cable anchor support roadway under condition of floor cross mining was obtained. The result indicated deformation of surrounding rock mainly occurred at effect violent period of mining of above cross mining working face,especially at the rock mass with more developed fracture. Reasonable support could control the deformation of surrounding rock and ensure the section of roadway could meet the request of production.

Experimental Study on Beneficiation of a Molybdenum Mine in Jiangxi

YUAN Yuan-Ping, ZOU Zhi-Qiang, HUANG Wan-Fu

2011, 27(4):  25-27. 

Asbtract ( 1462 )  

Related Articles | Metrics

Valuable mineral composition and grain size characteristics of a molybdenum mine in Jiangxi province were analyzed, suitable grinding fineness of flotation separation, suitable dosage of kerosene as collector and pine camphor oil as frother of rough flotation, dosage of Na2S as inhibitor of one concentrating, dosage of kerosene as collector and pine camphor oil as frother of one time scavenging of this mineral were confirmed through test, and test was done on one roughing, one scavenging, six times concentration close circuits which confirmed in searching test, molybdenum concentrates with molybdenum grade 45.23% and recovery rate 85.14% were obtained.

 Technological Status of Recovering Copper, Lead, Zinc, Sulfur from Gold Cyaniding Tailings

LI Ting, YIN Yan-Fen, FANG Xi-Hui, QIU Ting-Sheng

2011, 27(4):  28-29. 

Asbtract ( 1524 )  

Related Articles | Metrics

Common technologies of recovering copper, lead, zinc, sulfur from cyanidation tailings in China are introduced, technologies of lead zinc flotation copper sulfur restraint, lead foltation zinc restraint,copper lead flotation zinc sulfur restraint, gold and silver recovery from cyanide residue are all belong to technology of typical, efficient and reliable on aspects of recovery and development of secondary resource.

Emission-reduction and Benefits Increase Practice of Gongchangling Concentration Plant

GAO Lin-Zhang, YIN Wan-Zhong, WANG Yang, HAN Yue-Xin

2011, 27(4):  30-32. 

Asbtract ( 1633 )  

Related Articles | Metrics

Application and effect of emission-reduction and benefits increase technology of Gongchangling concentration plant of Anshan Iron and Steel Group Corporation are introduced comprehensively, technologies and measures of emission-reduction and benefits increase are introduced on improvement of ore crushing process and high-efficiency reform of crusher, whole magnetic separation flowsheet replaces magnetic separation flotation process and maximization reform of equipments of grinding, classification, screening, magnetic separation,application of high efficiency thickening and dehydration equipment and recovery of strong magnetism mineral from tailings, operation of automatic control system and so on, processing capacity of concentration plant is enhanced greatly, output of magnetite concentrate is increased, treatment cost of raw ore is reduced, emission of pollutants is reduced, economic benefit of enterprise is enhanced.

Progress of Mineral Processing Technology of Ultra-low-grade Magnetite

MA Huai-Xiang

2011, 27(4):  33-34+42. 

Asbtract ( 1664 )  

Related Articles | Metrics

Ultra-low-grade magnetite beneficiation development has very important practical significance to mineral processing of China. Latest progress obtained on aspects like mineral processing technology and mineral processing equipment of ultra-low-grade magnetite and so on of China in the recent years is summarized, and specific suggestions are given on environmental problems could caused by mass exploitation.

Research and Practice of High-concentration Flotation of Sijiaying Iron Ore

ZHENG Wei-Min, ZHANG Qing-Feng, TANG Qiang

2011, 27(4):  35-36. 

Asbtract ( 1735 )  

Related Articles | Metrics

Problems of weak treatment capacity of reverse flotation system of high intensity magnetic mineral of Sijiaying iron ore concentration plant are analyzed briefly, combined with treatment capacity of field devices, resonable reagent system test with pulp density around 50% was made in laboratory, phosphorus concentrate with iron grade above 67.50% were obtained at production field based on the best reagent system, grade of reverse flotation tailings was only 16%.

Research of Comprehensive Treatment on Ecological Environment of Molybdenum Mine at Sadaigoumen

LI Chang-Cun, SONG Ying-Min, ZHANG Jun-Ying, HAN Xiu-Li, LI Fu-Ping

2011, 27(4):  37-39. 

Asbtract ( 1384 )  

Related Articles | Metrics

Aim at the characteristics of mining and separation system of molybdenum mine at Sadaigoumen at Fengning of Hebei, design and construction were finished directly on systems like treatment of stive pollution, water pollution,noise pollution, solid waste pollution and ecological restoration of mine and so on, physical and mental health of staffs and villagers living around mining area are protected, build a green and harmonious mine of environment-friendly and resource-saving.