The scheme design and recovery evaluation of low calorific value coal from gangue;

Research of switched reluctance motor control system for coal gangue hoist;

Analysis on Reducing Amount of Gangue and Recovery and Utilization of Waste

Automatic separation of waste rock in coal mine based on image procession and recognition;

It also gives the application of SRD in the mine winch of waste rock.

Aiming at 3 main problems of coal under village, filling mining of strip pillar and disposal of underground waste rock,the paper put forward a program of mining strip pillar with waste rock filling on the basis of physical and mechanical test of waste rock and numerical simulation.

The article describes the sources and types of environmental pollution in coal preparing plant and the harm they may produce, by analyzing the pollution of coal dust, noise, medicine, slurry, refuse, this text proposes the measure of controlling the pollution.

Factors and preventive measures of waste spontaneous combustion;

In order to solve the problem of heaping waste in aboveground,a technique of disposal waste in underground was proposed.

Discuss the result of coal refuse leaching test in Shanxi;

Research into trial-manufacture of rubber filer by coal refuse in Hunan Jinzhushan coal mine;

Research on modification with TiO_2 and photocatalysis features of coal refuse sintering filter material;