加压过滤机在刘庄选煤厂的应用

Application of pressure filter in Liuzhuang coal preparation plant

介绍了加压过滤机的结构特征、技术参数及工作原理。针对刘庄选煤厂存在的加压过滤机处理量小,煤泥水分高,洗水浓度居高不下,噪音污染严重等问题,从调整加压过滤机工作参数,提高煤泥回收率;"掺粗"入料煤泥水,改变煤泥粒度组成;优化滤网孔径,提高过滤效率;科学选择煤泥水处理药剂,提高煤泥处理量;完善煤泥水处理工艺流程,满足煤泥水处理要求;因地制宜改造消音器,彻底根治噪音污染6个方面对刘庄选煤厂进行技术改造。技改完成后,煤泥产品各项指标均达到了预期效果,煤泥回收设备处理量提高,浓缩池煤泥回收彻底,循环水质量浓度始终控制在0.1 g/L以下,保证了洗选煤的质量。通过优化煤泥产品结构,选煤厂共实现增收320万元,每年可节约磁铁矿粉费用72万元,节约材料费约10余万元。

The structural characteristics, technical parameters and working principle of pressure filter are introduced. To solve these problems, which are lower throughput capacity, higher slime moisture and washing water concentration, serious noise pollution in Liuzhuang coal preparation plant, reform the process from the following six aspects：Adjust the working parameters of pressure filter to improve the effect of slime recycle, mix crude material into slime water to adjust granularity composition, optimize the filter aperture to improve filter efficiency, scientifically select the treatment agents of slime water to improve throughput capacity, perfect slime water treatment process to meet the requirements, transform muffler to eliminate noise. After technological transformation, every index of slime product reaches the expected effect. The throughput capacity of slime recycle equipment has been improved, slime in concentrated pool can be completely recycled, and the concentration of recycled water is controlled below 0. 1 g/L to ensure the quality of coal products. Optimize the structure of slime products, the coal preparation plant achieves a total increasing income of 3.20 million yuan, annual saves magnetic powder 0. 72 million yuan ,material cost about 0. 10 million yuan.