炼焦中煤再选试验研究  

Experimental Study on Re-preparation of Coking Middlings

作　　者：沈丽娟[1] 陈少辉[1] 陈建中[1] 

机构地区：[1]中国矿业大学煤炭加工与高效洁净利用教育部重点实验室,江苏徐州221116

出　　处：《煤炭技术》2015年第5期298-300,共3页Coal Technology

基　　金：江苏高校优势学科建设工程资助项目

摘　　要：为解决我国炼焦用煤资源短缺问题,提高稀缺煤种回收率和利用率,以某炼焦煤选煤厂重介中煤为研究对象,对其进行不同粒度破碎解离试验,TBS分选效果预测和分步释放浮选试验。结果表明:炼焦煤选煤厂根据自身特点选择合适的解离粒度和分选工艺进行中煤再选可以增加精煤产率,提高中煤利用率,具有很高的经济效益和社会效益。In order to solve the shortage problem of coking coal resources in China and to improve the coal recovery and utilization efficiency,taking the dense medium middlings from a Coking Coal Preparation Plant as the study object.Experiments of crushing with different particle size and progressive released flotation experiment were conducted,and the separation effect of TBS was also predicted.The results showed that selecting suitable liberation particle size and separation process based on the Plants' characteristics to re-prepare middlings could increase the yield of clean coal and improve the utilization efficiency of middlings,providing great economic and social benefits.

关 键 词：中煤再选 破碎 解离 效果预测 效益 

分 类 号：TQ520.6[化学工程—煤化学工程]