海滨石英砂矿物学研究——以海南文昌石英砂为例  

Mineralogical Study about Seashore Quartz Sand Ore——a Case Study from the Seashore Quartz Sand Ore at Wenchang, Hainan Province

作　　者：王守敬[1] 邵伟华[1,2] WANG Shoujing;SHAO Weihua(Zhengzhou Institute of Multipurpose Utilization of Mineral Resources,CAGS,Zhengzhou 450006,China;China National Engineering Research Center for Utilization of Industrial Minerals,Zhengzhou 450006,China)

机构地区：[1]中国地质科学院郑州矿产综合利用研究所,河南郑州450006 [2]国家非金属矿资源综合利用工程技术研究中心,河南郑州450006

出　　处：《矿产保护与利用》2019年第6期58-61,共4页Conservation and Utilization of Mineral Resources

基　　金：中国地质调查局地质调查项目(DD20190186)

摘　　要：以海南文昌石英砂为例,采用矿物解离度分析仪(MLA)分析,扫描电镜分析等方法对海滨石英砂型石英矿进行了详细的矿物学研究。分析结果显示海南文昌地区石英砂矿SiO2含量98.63%,石英含量98.25%,主要杂质矿物为金红石、锆石、黏土矿物等。矿石中约75%的金红石、锆石粒度粗,已单体解离,可通过选矿去除。其余的金红石、锆石粒度细,多与石英紧密共生,分离难度较大。矿石中黏土矿物多黏附在石英表面,大部分可通过擦洗除掉,但很难除净。综合分析认为海滨石英砂矿中石英表面普遍黏附有黏土矿物等杂质,且不易除净,不适合做高纯石英砂原料。不同海滨石英砂矿床中微细粒金红石等杂质含量变化较大,造成各矿床的产品作为普通石英砂,其品质也有所差异。Taking the Seashore Quartz Sand Ore at Wenchang Hainan province as a case, the Mineral Liberation analyzer(MLA), scanning electron microscope(SEM), and other analysis was used to study the mineralogical characteristics of seashore quartz sand ore in this paper. The result shows that the ore’s SiO2 content is 98.63%, and the content of quartz is 98.25%. the others mineral are rutile, zircon, clay mineral, and so on. The 75% of rutile and zircon in ore are crude and liberated, which can be separated. While other are very fine, and encapsulated by quartz, which can’t be separated. The clay minerals are adhered in the surface of quartz, and can’t be separated completely. Comprehensive Analysis shows that in seashore quartz sand ore, there are clay minerals adhered in the surface of quartz, which can’t be separated completely. So it can’t be used to make high purity quartz sand. And the content of fine rutile and other minerals are imparity in different ore. So it makes the quality of products from different ore imparity.

关 键 词：矿物学 海滨石英砂 石英 金红石 黏土矿物 

分 类 号：P619.233[天文地球—矿床学]