江西某锂云母尾矿制备高纯石英砂试验研究
Experimental Study on the Preparation of High Purity Quartz Sand from Lepidolite Tailings
向丞睿 1李育彪 1李佩悦 2潘力 3顾云翔 1魏桢伦 1胡祥琳1
作者信息
- 1. 武汉理工大学 资源与环境工程学院,湖北 武汉 430070;非金属矿产资源绿色利用教育部重点实验室,湖北 武汉 430070
- 2. 玻璃新材料创新中心(安徽)有限公司,安徽 蚌埠 233018
- 3. 中建材玻璃新材料研究院集团有限公司,安徽 蚌埠 233018
- 折叠
摘要
随着半导体、光伏等战略新兴产业的高速发展,其关键基础原材料石英资源变得愈发紧缺,对尾矿中的低品质石英砂进行高效分选提纯,可有效缓解我国高纯石英资源短缺的局面.本试验对江西某锂云母尾矿中的石英砂进行选矿试验研究,采用"磁选-擦洗-浮选-酸浸"试验工艺流程,研究不同试验因素对石英砂提纯效果的影响.结果表明,石英砂中SiO2 含量(质量分数,下同)由原矿73.75%提至99.90%,精矿总杂质元素含量降至977.83 μg/g,其中Fe2O3 含量从0.42%降至87.21 μg/g,Al2O3 含量从14.28%降至584.12 μg/g,去除率分别为97.91%与99.59%,提纯效果较好,满足JC/T 2314-2015《光伏玻璃用硅质原料》对光伏砂质量要求.本研究有利于提升锂云母伴生石英矿的综合利用,提高伴生石英矿的价值.
Abstract
With the rapid development of strategic emerging industries such as semiconductors and photovoltaics,quartz resources,as the key basic raw materials,have become increasingly scarce.Efficient separation and purification based on low-quality quartz sands in tailings can effectively alleviate the shortage of high-purity quartz resources in China.The beneficiation test of quartz sand from lithium mica tailings in Jiangxi Province was carried out,and the influence of different factors on the purification of quartz sand was studied via"magnetic separation-scrubbing-flotation-acid leach-ing".The results showed that SiO2 content in quartz sand increased from 73.75%to 99.90%while the total contents of impurity elements in concentrate decreased to 977.83 μg/g,Fe2O3 content decreased from 0.42%to 87.21 μg/g,and Al2O3 content decreased from 14.28%to 584.12 μg/g,the Fe2O3 and Al2O3 removal rates were 97.91%and 99.59%,respectively,the purification effect was good and the concetrate met the quality requirements for photo-voltaic sand in JC/T 2314-2015"Silicon based Raw Materials for Photovoltaic Glass".Therefore,this study is conducive to promoting the comprehen-sive utilization of lithiumite associated quartz ore and increasing the value of associated quartz ore.
关键词
尾矿/石英砂/工艺矿物学/提纯/磁选/浮选/酸浸Key words
tailings/quartz sand/process mineralogy/purification/magnetic separation/flotation/acid leaching引用本文复制引用
基金项目
湖北省重点研发计划项目(2021BCA127)
出版年
2024
NETL
NSTL
万方数据