炼焦煤选煤厂改选无烟末煤后产生的问题及对策  

Problems and countermeasures arising from the conversion of coking coal preparation plants to anthracite coal

作　　者：程翔锐 徐国鹏 赵佳伟 于波 CHENG Xiang-rui;XU Guo-peng;ZHAO Jia-wei;YU Bo(Tangshan Guohua Technology International Projects Co.,Ltd.,Tangshan,Hebei 063020,China;Beijing Guohua Techonology Group Ltd.,Beijing 101300,China)

机构地区：[1]唐山国华科技国际工程有限公司,河北唐山063020 [2]北京国华科技集团有限公司,北京101310

出　　处：《煤炭加工与综合利用》2022年第3期8-12,共5页Coal Processing & Comprehensive Utilization

摘　　要：A选煤厂原为炼焦煤选煤厂,改选无烟末煤后,合格重悬浮液密度由1.45 kg/L增加到1.73 kg/L,悬浮液中固体量增加近20%,由此产生了磁团聚结构化等问题;通过对脱介设备和磁选设备操作条件进行整改,并控制好磁铁矿粉质量和煤泥量,有效保持了高密度合格悬浮液的稳定性,提高了重介质旋流器的分选精度。A coal preparation plant was originally a coking coal preparation plant,after the conversion of anthracite coal,the density of qualified resuspendant increased from 1.45 kg/L to 1.73 kg/L,and the amount of solids in the suspension increased by nearly 20%,which led to problems such as magnetic agglomeration structure;by rectifying the operating conditions of deressification equipment and magnetic separation equipment,and controlling the quality and amount of magnetite powder,the stability of the high-density qualified suspension was effectively maintained,and the sorting accuracy of the heavy medium cyclone was improved.

关 键 词：选煤厂 无烟末煤 三产品重介质旋流器 磁团聚结构化 重悬浮液 磁铁矿粉 

分 类 号：TD947[矿业工程—选矿]