煤泥浮选调浆过程能量输入优化研究  

Energy input optimization for slurry conditioning of coal slime flotation

作　　者：杨帆[1,2] 朱宏政 张勇[1,2] 吴念刚[1,2] 李锋伟[1,2] YANG Fan;ZHU Hong-zheng;ZHANG Yong;WU Nian-gang;LI Feng-wei(State Key Laboratory of Deep Coal Mining Response and Disaster Prevention and Control,Anhui University of Technology,Huainan 232001,China;School of Materials Science and Engineering,Anhui University of Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学深部煤矿采动响应与灾害防控国家重点实验室,安徽淮南232001 [2]安徽理工大学材料科学与工程学院,安徽淮南232001

出　　处：《煤炭工程》2022年第7期164-169,共6页Coal Engineering

基　　金：国家自然科学基金资助项目(52104242);安徽省优秀青年人才培育重点项目(gxyqZD2020019);安徽省高校自然科学研究重大项目(KJ2021ZD0046)。

摘　　要：浮选调浆过程中能量输入既会促进煤泥吸附捕收剂,也会使捕收剂从煤泥颗粒表面脱附,是影响浮选效果的关键因素。以临涣选煤厂浮选入料为研究对象,探究叶轮搅拌转速、搅拌时间、煤油浓度等因素对浮选过程中捕收剂吸附率、煤泥表面积利用率、浮选回收率等指标的影响机制。随着叶轮搅拌转速和搅拌时间增大,捕收剂吸附率、煤泥表面积利用率和浮选效率均先增大后减小。随着煤油浓度增大,捕收剂吸附率和浮选效率先增大后减小,而煤泥表面积利用率逐渐增大后稳定。The energy input during the flotation conditioning will both promote both the adsorption and desorption of collector on coal particle surface, which is a key factor affecting the flotation performance. Taking flotation feed from Linhuan Coal Preparation Plant as the research object, the effects of the impeller stirring speed, stirring time and kerosene concentration on the collector adsorption rate, surface area utilization rate of coal particle and flotation rate in flotation process were investigated, respectively. The results show that, with the increase of impeller stirring speed and stirring time, the adsorption rate of collector, surface area utilization rate of coal particle and flotation rate firstly increases and then decreases. Meanwhile, the adsorption rate of collector and flotation efficiency increases and then decreases with increasing of kerosene concentration in the studied scope. In addition, the surface area utilization rate of coal slurry gradually increases and then keeps constant.

关 键 词：捕收剂 吸附率 浮选速率 表面积利用率 

分 类 号：TD94[矿业工程—选矿]