If that is the case in the mining industry, the choice of anion. Washing areas polyacrylamide is to promote mining, coal washing water recycling solids settling, water clarification, while useful recyclable solid particles, and to avoid environmental pollution. With the improvement of the degree of mechanization of mining, micro-fine coal content plays an increasing proportion, part of a vicious cycle in the washing process, to achieve water washing, it is necessary to accelerate the fine coal water slurry settlement, ensure a low concentration of circulating water. Is a highly effective organic polymer flocculant, which is often associated with inorganic cohesion complex slime water treatment agent for Coal Preparation Plant. In preparation plant, which is mainly used for: 1, concentrated slurry water depth purification machine, add flocculant, slime accelerate settlement, reducing the overflow water concentration. 2, in the vacuum filter or filter, add flocculant, improve cake structure, reduce cake moisture, improve the filtration rate.