锦界选煤厂煤尘综合治理

Comprehensive treatment of coal dust in Jinjie coal preparation plant

为降低作业场所的粉尘含量,分析了选煤厂煤尘治理措施,并对煤尘治理后的效果进行分析。锦界选煤厂通过优化生产工艺、改造除尘设施、增设新湿式除尘设施、创建无人操作等达到降尘和减少作业人员身心危害的目的。对于煤流落差大和风力大而产生的煤尘,宜采用导料槽密封、扩容和增加挡尘帘的方法治理。对因表面水分低、转载过程中煤块撞击和煤炭颗粒细而产生的粉尘,宜采用水喷雾降尘方法。煤尘综合治理后,选煤厂煤尘浓度从30 mg/m3以上降至5 mg/m3以下。

In order to reduce the dust content in the workplace,coal dust control measures in coal preparation plant were analyzed,and effect of coal dust control was analyzed.Coal dust and physical and mental hazards of workers are reduced through optimizing production process,reforming dust removal facilities,adding new wet dust removal facilities and creating unmanned operation in Jinjie coal preparation plant.For the coal dust caused by large drop of coal flow and large wind force,it is appropriate to adopt the methods of sealing the guide trough,expanding the capacity and increasing the dust curtain to control it.Water spray and dust suppression methods should be adopted for coal dust produced by low surface moisture,coal bumps in the process of reloading and fine coal particles.After the comprehensive treatment of coal dust,the concentration of coal dust is reduced from above 30 mg/m3 to below 5 mg/m3.