难浮煤泥选择性聚团工艺试验研究  

Experiment research on difficult-to-float coal slime selective agglomeration process

作　　者：刘莉君[1] 刘炯天[1,2] 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110819 [2]中国矿业大学化工学院,江苏徐州221008

出　　处：《中国矿业》2010年第10期74-76,90,共4页China Mining Magazine

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%.

关 键 词：难浮煤 搅拌 分散 选择性聚团 浮选 

分 类 号：TD943.8[矿业工程—选矿]