大屯选煤厂浮选自动控制系统改造

针对大屯选煤厂浮选系统因采用人工调节方式而存在浮选效果差、药剂含量大、成本高等问题,提出了浮选自动控制系统的改造方案,主要介绍了系统中浮选自动加药控制系统和絮凝剂自动添加系统2个部分的实现。实践表明,改造后的浮选自动控制系统减少了吨煤消耗的浮选药剂量,提高了浮选尾矿的灰分和浮选精煤回收率,并大大减少了工人的劳动量。

Reform of automatic flotation control system in Datun Coal Preparation Plant

In view of problems of bad flotation effect,high flotation reagent content and high cost in flotation system of Datun Coal Preparation Plant caused by manual operation,the paper proposed a reform scheme of automatic flotation control system,mainly introduced implementation of automatic reagent feeding control system and automatic flocculant feeding system.The practice shows that the reformed system reduces flotation reagent consumption per ton of coal,raises recovery rate of ash and coal flotation concentrate from flotation tailing,and greatly reduces amount of labor.