内蒙天丰选煤厂粗煤泥分选工艺改造及效果研究  

Transformation of Coarse Coal Slime Separation and Effect Study of Tianfeng Coal Preparation Plant in Inner Mongolia

作　　者：贺长营 李延锋[1] 李东泽[1] 赵明辉[1] 张迟强 

机构地区：[1]中国矿业大学化工学院,江苏徐州221116

出　　处：《煤炭技术》2015年第2期282-284,共3页Coal Technology

基　　金：国家自然科学基金(51174204);中央高校基本科研业务费专项资金(2014YC08);江苏省高校优势学科资助

摘　　要：生产过程中经常发生末精煤灰分高及浮选尾矿跑粗问题,分析发现主要由于煤质变化使原有粗煤泥分选工艺分级和脱泥效果不理想造成。提出了多段式逐步分级的新思路,将分级过程分为多段完成,利用分级筛回收溢流中夹带的粗颗粒。同时改变精煤脱泥筛安装倾角,并增大筛面喷水量,保证脱泥效果。The problems of concentrate entrainment in flotation tailings and high- ash of the fine clean coal often occurs,it was found on analysis the major cause was that the effect of classifying and desliming was not satisfactory in the original coarse coal slime separation process due to the changes of raw coal. A new thinking of multistage- gradual classification was put forward,which divided the classification process into several sections. A grading sieve was used to recycle the coarse particles contained in overflow. Meanwhile,the screen was transformed to ensure the desliming quality by changing the installation angle and increasing the screen spray water.

关 键 词：分级 脱泥 灰分 工艺改造 

分 类 号：TD94[矿业工程—选矿]