磨矿方式对菱镁矿可浮性的影响  

Effect of Grinding Methods on Floatability of Magnesite

作　　者：李闯 刘榴 付亚峰 许鹏云 王余莲[1] 苏德生 姜伯昭 于建伟 LI Chuang;LIU Liu;FU Yafeng;XU Pengyun;WANG Yulian;SU Desheng;JIANG Bozhao;YU Jianwei(School of Materials Science and Engineering,Shenyang Ligong University,Shenyang 110819,China;Ansteel Beijing Research Institute CO.,LTD.Beijing 102200,China;National Engineering Research Center of WEEE Recycling Engineering,Jingmen 448124,China;Liaoning Province Ultra high Power Graphite Electrode Material Professional Technology Innovation Center,Dandong 118100,China;Liaoning Dan Carbon Group Corporation Limited,Dandong 118100,China)

机构地区：[1]沈阳理工大学材料科学与工程学院,辽宁沈阳110159 [2]鞍钢集团北京研究院有限公司,北京102200 [3]国家电子废弃物循环利用工程技术研究中心,湖北荆门448124 [4]辽宁省超高功率石墨电极材料专业技术创新中心,辽宁丹东118100 [5]辽宁丹炭科技集团有限公司,辽宁丹东118100

出　　处：《矿产保护与利用》2023年第2期80-86,共7页Conservation and Utilization of Mineral Resources

基　　金：国家自然科学基金项目(51804200);辽宁省重点研发计划-应用基础研究项目(2022JH2/101300111);沈阳市科技局项目(22-322-3-03);沈阳市中青年科技创新人才支持计划(RC220104);辽宁省教育厅面上项目(LJKMZ20220588)。

摘　　要：立式辊磨机是一种集“碎、磨、烘干、分级”为一体的高效低碳型粉磨设备,具有结构简单、可靠性高、工艺流程短、占用空间小等优点。为了考察立式辊磨机磨矿对菱镁矿可浮性的影响,针对丹东宽甸某菱镁矿,分别采用立式辊磨机磨矿、球磨机干式磨矿以及球磨机湿式磨矿3种磨矿方式,研究对比了菱镁矿单矿物的可浮性。研究结果表明,立式辊磨机磨矿下,菱镁矿的回收率明显高于其他两种磨矿方式。通过比表面积分析、AFM检测以及药剂吸附试验可知,与球磨干式磨矿和球磨湿式磨矿相比,立式辊磨产品具有较高的表面粗糙度(2.76 nm)和较大的比表面积(0.2594 m^(2)/g),这也导致了立式辊磨机磨矿产品对捕收剂的吸附量更大,从而更有利于菱镁矿在油酸钠体系下的浮选。Vertical roller mill is a high-efficiency and low-carbon grinding equipment integrating"crushing,grinding,drying and grading".It has the advantages of simple structure,high reliability,short process flow and small space occupation.The effect of vertical roller mill grinding,ball mill dry grinding and ball mill wet grinding on the floatability of magnesite was carried out for a magnesite in Kuandian,Dandong.The results showed that the recovery rate of magnesite in vertical roller mill grinding was significantly higher than that in other two grinding methods.According to specific surface area analysis,AFM detection and reagent adsorption test,compared with ball mill dry grinding and ball mill wet grinding,vertical roller grinding products had higher surface roughness(2.76 nm)and larger specific surface area(0.2594 m^(2)/g).This also leaded to a greater adsorption capacity of collectors on the grinding products of vertical roller mills,which was more conducive to the flotation of magnesite in the sodium oleate system.

关 键 词：磨矿方式 立式辊磨机 球磨机 菱镁矿 可浮性 油酸钠 

分 类 号：TD921.4[矿业工程—选矿] TD923