摘要
利用选择性聚团工艺处理难浮煤泥,首先确定难浮煤泥解离度为-0.074mm含量为86.85%,然后进行搅拌速度、搅拌时间、分散剂用量及非极性油用量的条件探索试验。结果表明:选择性聚团工艺,最佳条件为XHF-D高速分散器搅拌速度和搅拌时间分别为8000r/min、20min;六偏磷酸钠的用量为1500g/t,煤油为790g/t;此时得到精煤产率为58.72%,精煤灰分为10.69%,精煤可燃体回收率为68.42%,分选效果较为理想。
Selective agglomeration technology was used to deal with difficult-to-float coal slime.Liberation degree of difficult-to-float coal slime was first determined,and the coal slime-0.074mm fineness account for 86.85%,then explorative test were carried on of different variants changes of stirring speed,stirring time,dispersant dosage and non-polar oil consumption.The test result indicates that the method is feasible. The optimum conditions of selective agglomeration technology were XHF-D high-speed mixing speed and mixing time respectively 8000r/min,20min,and Sodium hexametaphosphate dosage for 1500g/t,and kerosene for 790g/t.under the condition concentrate yield was 58.72%,concentrate ash content was 10.69%,and coal combustible components recovery was 68.42%.
出处
《中国矿业》
北大核心
2010年第10期74-76,90,共4页
China Mining Magazine
关键词
难浮煤
搅拌
分散
选择性聚团
浮选
difficult-to-float coal
agitation
dispersion
selective agglomeration
flotation
