An indispensable link in coal processing is coal washing. The coal after coal washing is called clean coal. Coal washing can not only achieve the purpose of environmental protection, but also improve the utilization rate of coal. How to use polyacrylamide in coal preparation plant and why to use polyacrylamide in coal preparation plant?

The coal mined out in coal mining usually contains part of impurities. The separation efficiency of coal and impurities can be improved by adding flotation agent. The clean coal floats out and the tail coal settles. Then, the clean coal in the tailing coal is recovered by sedimentation, filtration or centrifugation. The application of Polyacrylamide in the sedimentation process can promote the solid-liquid separation. Then it is sent to the thickener, and the clean water is recovered and recycled by the overflow of the thickener. The powdery clean coal is recycled by filtration and centrifugation. In the process of filtration and centrifugation, polyacrylamide was added again to improve the separation efficiency. Polyacrylamide for coal washing belongs to anionic type with molecular weight ranging from 8 million to 18 million.