Polishing coal washing special polyacrylamide in the coal pressure filter, or in the discharge of groundwater effect is very obvious, and its reaction time is about 5 seconds you can see the effect of precipitation.
The coal that is mined in coal mining usually contains part of the impurities, and the separation efficiency of coal and impurities can be improved by adding flotation agent. Flotation of fine coal out, tailings settlement. The settled coal is then recovered by sedimentation, filtration or centrifugation. Polyacrylamide used in the settlement process, thereby promoting solid-liquid separation. And then sent to the thickener, water from the thickener overflow recovery and recycling. Powdered coal is filtered and centrifuged. Polyacrylamide is added again during filtration and centrifugation to improve separation efficiency.