煤泥深度浮选技术的研究  

Study on the flotation technology for deep-cleaning of coal slime

作　　者：付晓恒[1] 单晓云[2] 蒋和金[1] 李祥丽[1] 

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083 [2]河北理工大学信息学院,河北唐山063009

出　　处：《煤炭学报》2006年第1期90-93,共4页Journal of China Coal Society

摘　　要：介绍了煤泥深度浮选的基本原理及其特点,首先采用常规的浮选分选出灰分较低的精煤和灰分尽可能高的尾煤,分选出的中间产物采用超细磨的方法磨至其中的煤和无机矿物充分解离,再采用絮团浮选的方法分选出其中的低灰精煤.分步释放浮选试验和中间产物的显微照片表明,中间产物以煤矸连生体为主.比较深度浮选和常规浮选试验的结果表明:在精煤灰分接近的情况下,深度浮选的精煤产率要高出46.06%,在精煤产率接近时,深度分选的精煤灰分要低1.78%.深度分选的结果甚至优于分步释放浮选的理论结果.Introduced the basic principle and special features of deep-cleaning of coal slime by flotation, i. e. , at first, separation of the slime by conventional flotation to give a relatively low ash concentrate, a tailing containing an ash as high as possible, and a middling to be ultra-fined ground to liberate extensively the inorganic minerals embedded in coal matrix, followed by its separation, in the seamed, by flocculation-flotation to recover additional low ash concentrate. The regressive release flotation test and microphoto indicated that the middling consists mainly of intergrowth particles of coal and minerals. Comparison between deep-cleaning and conventional flotation results denoted that, at approximately same concentrate ash, its yield by deep-cleaning was 46.06 percent point higher, and at similar yield, its concentrate ash, 1.78 percent point lower. The performance by deep-cleaning is even better than that by regressive release flotation test.

关 键 词：煤泥 絮团浮选 超细粉碎 

分 类 号：TD923[矿业工程—选矿]