Case Study: Polyacrylamide for Coal Washing and Recovery
Problem:In coal mining, coal is often contaminated with impurities. The separation efficiency between coal and impurities can be improved by adding flotation agents. Fine coal needs to be separated efficiently from the impurities, and the fine coal in the tailings must be recovered through settling, filtration, or centrifugation.
Solution:Polyacrylamide is used in the settling process to promote solid-liquid separation. It is added to the thickener, where clear water is recovered and recycled via the overflow. The fine coal in the tailings is then recovered through filtration or centrifugation, with polyacrylamide added again to enhance separation efficiency.
For users in the coal washing industry, a specialized flocculant has been developed to improve separation in various coal mines, significantly reducing the required dosage of chemicals while ensuring optimal results.
Treatment Results:By incorporating polyacrylamide in the filtration and centrifugation processes, significant improvements in separation efficiency were observed. The process enhanced the recovery of fine coal, reducing waste and improving water reuse. This approach also decreased chemical usage, lowering operational costs for coal mining operations.
II. Technical Parameters:
Appearance: White granules
Solid Content: ≥88%
Molecular Weight: 6-20 million Daltons
Density: 10-40 (Mole%)
III. Product Features:
Rapid Floc Formation: Promotes the rapid formation of large, compact flocs, leading to efficient sedimentation and low sludge volume.
Quick Dissolution: The product dissolves within approximately 60 minutes without producing insoluble residues, ensuring smooth operation.
Economical & Effective: Low dosage with high dewatering efficiency, resulting in reduced operational costs while achieving excellent results.
Enhanced Dewatering: Improves the dewatering of sludge, enabling better water recovery and waste reduction.
Ease of Use: Automatic feeding is possible, and the product is easy to handle for operators.
Conclusion:Polyacrylamide plays a crucial role in enhancing the separation and recovery of fine coal during the coal washing process. It not only increases the efficiency of coal recovery but also ensures better water reuse and reduced chemical consumption. This product has been designed to meet the needs of various coal mining applications, offering both cost savings and improved operational efficiency.
