大屯选煤厂粗精煤回收系统改造实践  

Practice of renovation of the clean coarse slime recovery system at Datun Coal Preparation Plant

作　　者：闫全喜 张悦松 王东彦 王飞飞 赵伟 YAN Quanxi;ZHANG Yuesong;WANG Dongyan;WANG Feifei;ZHAO Wei(Coal Preparation Center,Shanghai Datun Energy Co.Ltd.,Xuzhou,221611,China;Tuote Machinery Manufacturing Plant,Shanghai Datun Energy Co.Ltd.,Xuzhou 221611,China;Tangshan Research Institute Co.Ltd.,China Coal Technology&Engineering Group,Tangshan 063012,China;Hebei Province Coal Preparation Engineering&Technology Research Center,Tangshan 063012,China)

机构地区：[1]上海大屯能源股份有限公司选煤中心,江苏徐州221611 [2]上海大屯能源股份有限公司拓特机械制造厂,江苏徐州221611 [3]中煤科工集团唐山研究院有限公司,河北唐山063012 [4]河北省煤炭洗选工程技术研究中心,河北唐山063012

出　　处：《选煤技术》2022年第2期69-73,共5页Coal Preparation Technology

摘　　要：针对粗精煤细泥夹带多、水分高的问题,大屯选煤厂通过采用大直径煤泥浓缩旋流器替代小直径旋流器,叠层高频振动筛替代三质体高频振动筛,卧式煤泥离心机替代立式刮刀离心机等措施对粗精煤回收系统进行了改造。改造实施后,粗精煤灰分由9.19%降低到7.96%,水分由13.30%降低到9.20%,提质增效显著。The problem facing the plant is that the clean coarse-grained slime is high in content of entrained fine slime and moisture.To address this issue,renovation work is made on the use of the large-diameter thickening cyclone,stacked-up high-frequency vibrating screen and horizontal slime dewatering centrifuge respectively in place of the small-diameter cyclone,3-mass high-frequency vibrating screen and vertical scraper-discharge centrifuge.Practice shows the renovation work makes it possible for the clean coarse slime to drop its ash from 9.19%to 7.96%and its moisture from 13.30%down to 9.20%-a noticeable improvement well meeting the requirements for upgrading of product and improvement of operating efficiency.

关 键 词：粗精煤回收 粗精煤回收系统 叠层高频振动筛 卧式煤泥离心机 精煤产率 

分 类 号：TD946.2[矿业工程—选矿]