河北某石英砂除杂工艺研究  

Study on the Impurity Removal Technology of a Quartz Sand in Hebei

作　　者：赵雪淞[1] 刘鑫 洪琰 刘民[2] 贾宏薪 Zhao Xuesong;Liu Xin;Hong Yan;Liu Min;Jia Hongxin(College of Mining,Liaoning Technical University,Fuxin,Liaoning 123000;College of Sciences,Liaoning Technical University,Fuxin,Liaoning 123000)

机构地区：[1]辽宁工程技术大学矿业学院,辽宁阜新123000 [2]辽宁工程技术大学理学院,辽宁阜新123000

出　　处：《非金属矿》2020年第5期77-79,共3页Non-Metallic Mines

基　　金：国家自然科学基金(31870339)。

摘　　要：对河北某石英砂进行工艺矿物学分析,按照"擦洗-煅烧水淬-磁选-酸浸"工艺流程进行除杂试验,探究擦洗时间、煅烧温度、煅烧时间、酸浸温度、酸浸时间各因素对石英砂除杂效果的影响,从而确定最佳试验参数。结果表明,采用"擦洗-煅烧水淬-磁选-酸浸"工艺,最佳试验条件为:擦洗时间15 min,煅烧温度900℃,煅烧时间2.0 h,酸浸组合"3 mol/L HCl+1 mol/L HF+1 mol/L HNO3",酸浸液固质量比3︰1,酸浸温度80℃,酸浸时间6.0 h,Si O2纯度由99.18%提高至99.90%,杂质总含量由7 723.98μg/g下降至789.59μg/g,主要杂质中Al去除率为92.2%,Fe去除率为95.9%。A process mineralogy analysis was conducted on a quartz sand in Hebei,and the impurity removal test was conducted according to the process of"scrubbing-calcining water quenching-magnetic separation-acid leaching",the effect of various factors such as scrubbing time,calcination time,acid leaching temperature and acid leaching time on the impurity removal of quartz sand,so as to determine the best parameters.The results show that using the"scrubbing-calcining water quenching-magnetic separation-acid leaching"process,under the best test conditions of scrub time 15 min,calcination temperature 900℃,calcination time 2.0 h,acid leaching combination"3 mol/L HCl+1 mol/L HF+1 mol/L HNO3",liquid to solid ratio 3︰1,acid leaching temperature 80℃,acid leaching time 6.0 h,the purity of SiO2 is increased from 99.18%to 99.90%,the total impurity content decreased from 7723.98μg/g to 789.59μg/g,and the removal rate of Al from the main impurities was 92.2%,Fe removal rate was 95.9%.

关 键 词：河北石英砂 擦洗 煅烧 磁选 酸浸 除杂 

分 类 号：TD97[矿业工程—选矿]