分析了中煤大同能源塔山选煤厂煤质特点和生产工艺现状,由于入洗原煤中粉煤含量大,因此降低了产品回收率和产品质量,提出采用交叉筛对原煤进行-3mm脱粉,优化煤泥工艺环节;原煤脱粉工艺改造后,精煤产品中煤泥含量减少2%,商品煤水分降低1.5%,产品煤回收率提高约2%,取得了显著的经济效益和社会效益。

The characteristics of coal quality and the current production process of Tashan Coal Preparation Plant in Datong Energy of China Coal were analyzed. Due to the large content of pulverized coal in washed raw coal, the product recovery rate and product quality were reduced. It was proposed that cross-screening was used to de-pulverize raw coal by -3 mm to optimize the coal slime process. After the transformation of raw coal depulverization process, the coal slime content in refined coal products is reduced by 2%, the water content of commercial coal is reduced by 1. 5%, the recovery rate of product coal is increased by about 2%, and remarkable economic and social benefits have been obtained.

               
                    1 煤质分析
1.1 原煤煤质特点
1.2 产品煤煤质特点
2 脱粉工艺论证
2.1 分级粒级方案
2.2 脱粉设备比较
2.3 工业试验分析
3 脱粉工艺改造
3.1 工艺改造方案
3.2 脱粉洗选工艺
4 效果分析
5 结 语