十二胺体系中不同磨矿方式对石英可浮性的影响  

Effect of different grinding methods on floatability of quartz in dodecylamine system

作　　者：李闯 许鹏云 王余莲[1] 苏德生 袁志刚[1] 姜伯昭 于建伟 LI Chuang;XU Peng-yun;WANG Yu-lian;SU De-sheng;YUAN Zhi-gang;JIANG Bo-zhao;YU Jian-wei(School of Materials Science and Engineering,Shenyang Ligong University,Shenyang 110159,Liaoning,China;National Engineering Research Center of WEEE Recycling Engineering,Jingmen 448124,Hubei,China;Liaoning Province Ultra High Power Graphite Electrode Material Professional Technology Innovation Center,Dandong 118100,Liaoning,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]国家电子废弃物循环利用工程技术研究中心,湖北荆门448124 [3]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 [4]辽宁丹炭科技集团有限公司,辽宁丹东118100

出　　处：《矿冶》2023年第2期58-64,共7页Mining And Metallurgy

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中碎、粉磨、快速烘干、高效选粉等工序为一体的高效设备。研究了立式辊磨、干式球磨和湿式球磨三种磨矿方式下石英的表面特性,并考察了十二胺体系下,不同矿浆pH值、捕收剂和调整剂用量下,三种磨矿方式对石英可浮性的影响。结果表明,不同的浮选条件下,立式辊磨机石英样品的回收率基本都高于球磨干式磨矿和球磨湿式磨矿。较优的浮选工艺参数为矿浆pH值8.5,捕收剂十二胺用量为100 mg/L,不添加六偏磷酸钠和水玻璃,金属阳离子CaCl_(2)浓度为100 mg/L。立式辊磨机石英样品较高的表面粗糙度和比表面积提升了浮选过程中十二胺的吸附能力,从而提升石英的回收率。Vertical roller mill is an efficient equipment that integrates crushing,grinding,rapid drying,efficient powder separation and other processes.In this paper,the surface characteristics of quartz ground by vertical roller mill,dry-ball mill and wet-ball mill were analyzed.Effects of three grinding methods on the floatability of quartz under different slurry pH value,collector and regulator dosage in the dodecylamine system were further investigated.The results show that under different flotation conditions,the recovery of quartz samples from vertical roller milling is basically higher than that from ball milling dry grinding and wet grinding.The better flotation process parameters are pulp pH of 8.5,the dosage of collector dodecylamine is of 100 mg/L,no addition of sodium hexametaphosphate and sodium silicate,and the concentration of metal cation CaCl_(2) is of 100 mg/L.The high surface roughness and specific surface area of quartz samples from vertical roller mill improve the adsorption capacity of dodecylamine in the flotation process,thus improving the recovery rate of quartz.

关 键 词：立式辊磨机 球磨机 石英 十二胺 

分 类 号：TD923[矿业工程—选矿]