重介质旋流器产品特性分析及中煤解离-絮凝浮选研究  

Study on the characteristics analysis of heavy medium cyclone products and dissociation-flocculation flotation of middlings

作　　者：冯雪 赵博辉 冯子旭 朱张磊 FENG Xue;ZHAO Bo-hui;FENG Zi-xu;ZHU Zhang-lei(Shanxi Coking Coal Xishan Coal Electricity Group Co.,Dongqu Coal Preparation Plant,Shanxi Taiyuan,030020,China;College of Chemistry and Chemical Engineering,Xi’an University of Science and Technology,Shaanxi Xi’an,710054,China)

机构地区：[1]山西焦煤西山煤电(集团)有限责任公司东曲选煤厂,山西太原030200 [2]西安科技大学化学与化工学院,陕西西安710054

出　　处：《煤炭加工与综合利用》2024年第11期10-15,共6页Coal Processing & Comprehensive Utilization

摘　　要：分析了东曲选煤厂6~3 mm粒级重介质旋流器分选精煤、中煤、矸石的密度组成,进而计算了分配率和错配物含量,并给出了重介质旋流器分选密度调控建议。对1.40~1.80 g/cm^(3)中煤进行了磨矿-絮凝浮选实验,结果发现:当磨矿细度为75.85%的物料-0.010 mm时,在添加1000 g/t六偏磷酸钠、7 g/t PAM、1500 g/t煤油、200 g/t仲辛醇的条件下,采用絮凝浮选可回收产率为40.44%、灰分为11.75%的合格精煤。In this paper,the density composition of 6~3 mm clean coal,middlings and gangue of heavy medium cyclone in Dongqu Coal Preparation Plant was analyzed,and then the distribution rate and mismatch content were calculated,and the suggestions for the density control of heavy medium cyclone were proposed.In addition,grinding-flocculation flotation experiments for the middlings with the density of 1.40~1.80 g/cm^(3)were conducted.The results showed that when the grinding fineness was 75.85%-0.010 mm,the clean coal with a yield of 40.44%and an ash content of 11.75%was obtained by flocculation flotation under the addition of 1000 g/t sodium hexametaphosphate,7 g/t PAM,1500 g/t kerosene and 200 g/t sec-octyl alcohol.

关 键 词：重介质旋流器 中煤 磨矿 絮凝浮选 

分 类 号：TD942.7[矿业工程—选矿]