西庞选煤厂优化浮选药剂制度的研究

Research on flotation reagent rules optimization in Xipang coal preparation plant

通过煤样筛分试验和煤样浮沉试验,提出了浮选过程中不同粒度、不同密度级煤样的性质及对应的浮选药剂性能要求。在此基础上进行了"煤油+杂醇"和"煤油+复合药剂"的浮选寻优试验、分步释放试验及最优浮选效果的对比,最终确定了西庞选煤厂煤样实验室最佳药剂制度为:"煤油+复合药剂"配合使用,煤油用量为2.1 kg/t,煤油与复合药剂质量比为5∶1。最后进行了"煤油+杂醇"和"煤油+复合药剂"的工业应用试验,结果表明:在保证精煤灰分的条件下,与"煤油+杂醇"相比,"煤油+复合药剂"的药剂用量明显降低,精煤产率、尾煤灰分和浮选完善指标明显增加,平均增加了22.80%、18.21%和9.58%。

Based on coal slime screen analysis test and float-sink test, put forward coal properties of different granularity and density match corresponding floatation reagent properties. Based on the conclusion, try on the experiment of the explored optimization test of floatation, floatation release test, comparision of the best flotation results with the kerosene and fusel complexes, kerosene and composites. The best reagent rules of Xipang coal in lab are that cooperation of kerosene and composites,dosage of kerosene is 2. 1 kg/t,and the mass ratio of two reagents is 5：1. Finally, put the best lab results into industrial application. The application meets fine coal ash content requirement,and as opposed to kerosene and fusel complexes, the dosage of kerosene and composites are reduced obviously. At the same time, clean coal yield, high ash coal and flotation perfect index have been obviously increased, and average growth is 22. 80% , 18.21% and 9.58% respectively.