With regard to technical condition of the dehydration of cleaned powder coal in Mount Jiuli Coalmine,this paper introduces an advanced system of dehydration equipments and technologies,which achieves not only optimized effect but also good social and economic results.

In the light of the present situation of the higher magnetite medium consumption in modular-based dust coal washing workshop of Chengzhuang Coalmine,this paper advances some feasible transforming schemes by using the advanced technology and carrying out the field inspection and analysis,and obtains the expected result of reducing the medium consumption.

Economic analysis on partially washing slack coal of south part in Sunjiagou Coal Preparation Plant;

Discussion on feasibility of automatic slack coal blending system in coal preparation plant of Gushuyuan Mine;