两地石英岩矿的选矿提纯差异研究  

Beneficiation Difference of Quartzite Mines in Two Places

作　　者：刘孟浩 管俊芳[1,2] 任子杰[1,2] 高惠民[1,2] 刘志 唐腾望 沈彦旭 LIU Menghao;GUAN Junfang;REN Zijie;GAO Huimin;LIU Zhi;TANG Tengwang;SHEN Yanxu(School of Resources and Environment Engineering,Wuhan University of Technology,Wuhan 430070,Hubei,China;Hubei Key Laboratory of Mineral Resources Processing and Environment,Wuhan 430070,Hubei,China)

机构地区：[1]武汉理工大学资源与环境工程学院,湖北武汉430070 [2]矿物资源加工与环境湖北省重点实验室,湖北武汉430070

出　　处：《矿产保护与利用》2023年第2期99-105,共7页Conservation and Utilization of Mineral Resources

摘　　要：以成矿条件不同的甘肃(GS)和湖北(HB)两地的石英岩为研究对象,采用相同选矿工艺进行提纯效果对比研究,并通过XRF、偏光显微镜等手段分析其原因。结果表明:(1)两种样品可经破碎—筛分—磨矿—磁选—酸浸的工艺流程分别可得到SiO_(2)含量分别为99.68%(GS)、99.65%(HB)和Fe_(2)O_(3)含量分别为58.62μg/g(GS)、79.46μg/g(HB)的石英精矿,满足光伏玻璃用砂质量要求。(2)在磁选、浮选工艺流程中HB样的除铁率分别为81.92%、17.41%,优于GS试样的75.61%、10.37%,分析其原因是HB样相较于GS样原矿的含铁量更低,游离铁较多,且大量铁杂质赋存于绢云母化的长石与黏土矿物中,这类铁杂质易通过磁选、浮选方法去除。(3)在酸浸工艺中最佳条件下,GS样的除铁率为86.74%,优于HB样的66.97%,原因是GS试样的细粒级石英集合体含量较HB试样更多,大量白云母(绢云母)等含铁杂质赋存在集合体裂隙中,此类杂质通过酸浸工艺更易去除。The quartz from Gansu(GS)and Hubei(HB),which were generated in different ore-forming conditions,were used for the comparative purification research by the same beneficiation process.The reasons for the different purification results were analyzed by XRF and Polarized Light Microscopy.The results showed that:(1)The products with SiO_(2) content of 99.68%(GS),99.65%(HB)and Fe_(2)O_(3) content of 58.62μg/g(GS)and 79.46μg/g(HB)could be obtained respectively by crush−screen−grinding−magnetic separation−acid leaching process for the two samples,which could be used for photovoltaic glass production.(2)The iron removal rates of HB sample in the magnetic separation and flotation processes were 81.92%and 17.41%respectively,which were better than those of GS samples at 75.61%and 10.37%.Because the iron content of HB sample was lower than that of GS sample.What’s more,for the HB sample,it had more free iron,and a larger amount of iron impurities were stored in sericite feldspar and clay minerals,which were easily removed by magnetic separation and flotation.(3)The iron removal rate of GS sample under the best acid leaching condition was 86.74%,which was better than 66.97%of HB sample.The reason was that the fine−grained quartz population in GS sample contain was bigger than that in HB sample,and a large number of iron−containing impurities such as white muscovite and sericite were endowed in the population fractures,which were more easily removed by the acid leaching process.

关 键 词：石英 提纯 浮选 酸浸 光伏玻璃 

分 类 号：TD973.3[矿业工程—选矿]