Experiment and Research on the Separation Process of High Ash and Difficult Floatable Fine Coal
As for certain high ash and difficult floatable fine coal,the coal quality characteristic is the frangible and easyly-clayed main gangue mineral kaolinite,and the high content of fine-grade and intermediate density grade materials.In order to reduce tiny slimes pollution and to increase quality and recovery rate of concentrate,we used cyclonic-static micro-bubble flotation column and XFD-3 flotation machine to experiment on separation process.It probed into re-concentration after grinding rough refined coal,classified flotation process and selective agglomeration-flotation process these three technical processes.The comparison of flotation machine test result showed that,using the flotation column as separation equipment,process of re-concentration after grinding rough refined coal could obtain the best refined coal accumulation index.When medicaments dosage is kerosene 800 g/t,GF 300 g/t,and sodium hexametaphosphate 1500g/t,refined coal production rate of flotation column is 59.47％ and ash content is 10.63％.
separation process difficult floatable coal coal quality characteristic cyclonic-static micro-bubble flotation column.
Yuan Xizhong Liu Fei Cui Wei Liu Chengcheng
Key Laboratory for Special Area Highway Engineering of Ministry of Education,Changan University,Xian 710064,China
国际会议
哈尔滨
英文
1565-1571
2010-07-24（万方平台首次上网日期，不代表论文的发表时间）