海南文昌某石英砂矿提纯实验研究  

Experimental Study on Purification of a Quartz Placer in Wenchang of Hainan

作　　者：周迎春 彭程 黄蓉 李国杰 吉榆师 ZHOU Yingchun;PENG Cheng;HUANG Rong;LI Guojie;JI Yushi(Hainan International Resources Group Co.,Ltd.,Haikou 570100,Hainan,China;Hainan Institute of Geological Survey.Haikou 570100,Hainan,China)

机构地区：[1]海南国际资源(集团)股份有限公司,海南海口570206 [2]海南省地质调查院,海南海口570206

出　　处：《矿产保护与利用》2023年第4期73-80,共8页Conservation and Utilization of Mineral Resources

摘　　要：为了提高海南文昌某石英砂矿生产光伏玻璃用砂产品质量,采用MLA、电子显微镜等分析手段查明矿物性质和赋存状态,进行了石英砂提纯实验研究。结果表明,石英砂原矿含SiO_(2)96.67%、Al2O31.67%、Fe2O30.14%、TiO_(2)0.12%、ZrO_(2)0.01%,有害组分主要以泥质和含铁质矿物形式附着于石英颗粒的凹凸面、裂隙或酸性油质薄膜中。将传统的重选—磁选—酸浸工艺改造为擦洗—分级—螺旋溜槽重选—湿式磁选—碱浸的选别流程后,石英砂产品中SiO_(2)回收率从89.60%提升至95.57%,SiO_(2)含量从99.42%提升至99.74%,Al2O3和Fe2O3含量从0.18%和0.04%分别降至0.05%和0.008%,满足光伏玻璃用砂的需求;螺旋溜槽重选产品提纯获得ZrO_(2)含量5.18%、TiO_(2)含量23.78%的锆钛粗精矿;石英尾砂经烘干分级后,可用作铸造或压裂用的烘干砂,实现了该石英砂矿的综合利用。In order to improve the quality of photovoltaic glass sand products in a quartz sand mine in Wenchang,Hainan.It used methods such as MLA and electron microscopy to identify the properties and occurrence states of minerals,and conducted purification experiments on quartz sand.The results of experimental show that the content of SiO_(2),Al2O3,Fe2O3,TiO_(2),and ZrO_(2) in the raw sand of quartz is 96.67%,1.67%,0.14%,0.12%,and 0.01%,respectively.Harmful components mainly adhere to surfaces,fault and acid oil on quartz particles in the form of argillaceous and Ferruginous.After transforming the traditional process which consists of gravity concentration,magnetic separation and acid leaching into the new technology consists of scrubbing,grading,spiral gravity separation,wet magnetic separation,and alkali leaching.The experiment increased the recovery rate of SiO_(2) from 89.60%to 95.57%.The SiO_(2) increased from 99.42%to 99.74%,Al2O3 and Fe2O3 decreased from 0.18%and 0.04%to 0.05%and 0.008%in the products of quartz,which can meet the demand for raw materials of photovoltaic glass.The experiment purified the spiral heavy product to obtain zirconium titanium coarse concentrate that contains 5.18%ZrO_(2) and 23.78%TiO_(2).At the same time,Quartz tailings can be reprocessed into drying sand for casting or fracturing.This experiment has improved the recovery rate and added value of siliceous products.

关 键 词：石英 滨海砂矿 光伏玻璃用砂 浮法玻璃用砂 提纯 锆钛矿 

分 类 号：TD973.3[矿业工程—选矿]