石英砂永磁强磁选-酸浸提纯试验研究  

Experimental Research on Silica Sand Purification by Permanent Strong Magnetic Separation and Acid Leaching

作　　者：王华庆[1,2] 张树光[1] 李江山[2] 

机构地区：[1]辽宁工程技术大学土木与交通学院,辽宁阜新123000 [2]中国科学院武汉岩土力学研究所,湖北武汉430000

出　　处：《非金属矿》2015年第3期52-54,共3页Non-Metallic Mines

基　　金：国家自然科学基金(51274109);国家重大水专项课题(2011ZX07104-002-02)

摘　　要：采用永磁强磁选-酸浸工艺对普通级石英砂进行排杂提纯实验,研究了矿粉细度、磁感应强度、酸液浓度和浸泡时间对石英砂提纯效果的影响,从而得到提纯效果最佳的条件参数。结果表明:矿粉细度和磁感应强度是石英砂磁选的主要影响因素,磁选后石英砂Si O2纯度可达到99.9%,Fe含量为0.013%;常温下,酸液浓度和浸泡时间是石英砂酸浸的主要影响因素,酸浸后石英砂Si O2纯度可达到99.99%,Fe含量为0.0004%,经该工艺处理后的石英砂已达到超高纯石英砂级别。General level silica sand was purified by permanent strong magnetic separation and acid leaching. Effects of slag fineness, magnetic field intensity, acid concentration and immersion time on silica sand purification were studied to obtain the best conditional parameters. The results show that particle size and magnetic field intensity are main factors in effecting the magnetic separation of silica sand. SiO2 purity can reach 99.9% and Fe content is 0.013% after dry magnetic separation. At room temperature, acid concentration and immersion time are main factors in effecting the acid leaching of silica sand. SiO2 purity can reach 99.99% and Fe content is 0.0004% after acid leaching. After this process, silica sand has reached the ultra- pure level.

关 键 词：石英砂 永磁强磁选 酸浸 提纯 

分 类 号：TD973.3[矿业工程—选矿]