Specific selection of polyacrylamide in the coal refinement sector

Specific selection of polyacrylamide in the coal refinement sector
Numerous consumers in the coal refinement sector lack understanding regarding the selection of polyacrylamide for coal treatment facilities. Today, we shall delve into the specific methodology of polyacrylamide selection in the coal refinement sector.
Broadly speaking, coal treatment facilities utilize anionic polyacrylamide of a molecular weight between 8 and 18 million. However, specific situations exist where non-ionic or cationic polyacrylamide may be utilized.
During the coal refining process, for the raw water of peat, it is essential to initially introduce a fully dissolved coagulant, polyaluminum chloride solution, followed by incorporation of a preplanned coagulant, anionic polyacrylamide solution. Subsequently, the peat wastewater will swiftly undergo flocculation reaction, precipitate, and induce coal particles to settle. This is the application procedure of anionic polyacrylamide in coal treatment facilities.
When can cationic polyacrylamide be employed in coal treatment facilities? It transpires during the process of compressing mud coal cakes. During utilization, it is crucial to incorporate a suitable cationic polyacrylamide solution into water, thereby enabling the mud coal sediment to be compacted into a mud cake. Here, cationic polyacrylamide serves as a dehydrating agent. The commonly utilized cationic polyacrylamide is low cationic, with an ionization degree of 10 or 20.
In addition to utilizing anionic and cationic polyacrylamide, some coal treatment facilities also employ nonionic polyacrylamide, primarily linked to water quality.