湖北省恩施某光伏玻璃用石英砂提纯制备实验

Purification and Preparation of Quartz Sand for Photovoltaic Glass in Enshi of Hubei Province

这是一篇关于矿物加工工程领域的文章。光伏玻璃用石英砂是支撑新能源行业发展必不可少的原料之一,其供应安全保障事关我国双碳政策的成功实施。本文以湖北省恩施州某大型石英砂矿为研究对象,开展了工艺矿物学与除杂提纯实验研究,发现该石英砂矿的主要杂质为斜长石、云母、褐铁矿和金红石,采用了“分级-重选-磁选-酸浸”选矿工艺流程,最终获得符合粒度要求(0.106~0.500 mm)的石英砂精矿产率为67.61%,其SiO_(2)含量由97.36%提高至99.79%,有害元素Fe_(2)O_(3)、TiO_(2)与Al_(2)O_(3)含量则分别降低至75、80、630 g/t,石英精矿产品各项指标达到了光伏玻璃用硅质原料的生产要求,实现了该石英砂矿的有效利用。

This is an article in the field of mining processing engineering.Quartz sand for photovoltaic glass is one of the essential raw materials to support the development of the new energy industry,and its supply security is related to the successful implementation of China's two-carbon policy.In this paper,one of the essential raw materials for development,its supply security is related to the successful implementation of China's two-carbon policy.In this paper,a large quartz sand mine in Enshi Prefecture of Hubei Province was studied,and process mineralogy and purification were carried out.It was found that the main impurities of this quartz sand mine were plagioclase,mica,limonite and rutile.The mineral processing of"fractionationgravity separation-magnetic separation-acid leaching"was adopted,and the yields of quartz sand that met the particle size requirements(0.106~0.500 mm)were 67.61%,the content of SiO_(2) was increased from 97.36%to 99.79%,and the contents of harmful elements Fe_(2)O_(3),TiO_(2) and Al_(2)O_(3) were separately reduced to 75,80 and 630 g/t.The quartz concentrates meet the production requirements of siliceous raw materials for photovoltaic glass,realizing the effective utilization of the quartz sand ore.