茂名某高岭土尾矿分级利用及制备高纯石英  

Classification and Utilization of Kaolin Tailings from Maoming and Preparation of High-Purity Quartz

作　　者：何雯 刘波[1,2] 王彬翔 孙红娟[1,2] He Wen;Liu Bo;Wang Binxiang;Sun Hongjuan(Key Laboratory of Solid Waste Treatment and Resource Recycle,Southwest University of Science and Technology,Mianyang,Sichuan 621010;Institute of Mineral Materials and Application,Southwest University of Science and Technology,Mianyang,Sichuan 621010;China Kaolin Clay Co.,Ltd.,Suzhou,Jiangsu 215000)

机构地区：[1]西南科技大学固体废物处理与资源化教育部重点实验室,四川绵阳621010 [2]西南科技大学矿物材料及应用研究所,四川绵阳621010 [3]中国高岭土有限公司,江苏苏州215000

出　　处：《非金属矿》2024年第5期98-102,107,共6页Non-Metallic Mines

基　　金：地勘揭榜挂帅项目(建地科[2022]04号);四川省知识产权局知识产权专项(2022-ZS-00031)。

摘　　要：在自然条件下,高岭土及其伴生脉石矿物因风化作用呈现不同的粒径分布。高岭石及其他黏土类矿物的粒径较小,而伴生的石英等矿物粒径较大,因此常采用筛分法分离不同种类的矿物资源。本试验对广东茂名高岭土尾矿进行粒度分级,并针对不同粒径尾矿样品进行化学成分、物相组成、宏观和微观形貌特征测试。根据不同矿物组成特点,对高岭土尾矿进行分级利用可行性分析,评估不同粒径高岭土尾矿作为石英提纯原料的潜力,筛选出最适用于石英提纯的部分原料,并进行分级提纯与利用,得到石英纯度为99.98%的高纯石英砂、98.83%的光伏玻璃用石英砂,满足JC/T 2314—2015《光伏玻璃用硅质原料》要求。Under natural conditions,kaolinite and its associated veinstone minerals show different particle size distributions due to weathering.Since kaolinite and other clay minerals have small particle sizes and the associated minerals such as quartz have large particle sizes,sieving is often used to separate different kinds of mineral resources.In this study,kaolinite tailings from Maoming,Guangdong Province were classified by particle size,and the tailings samples with different particle sizes were tested for chemical composition,phase composition,macroscopic and microscopic morphological characteristics.According to the characteristics of different mineral compositions,the feasibility analysis of grading and utilization of kaolin tailings was carried out to assess the potential of kaolin tailings with different particle sizes as raw materials for quartz purification,and the most suitable part of raw materials for quartz purification was screened out,and the grading and purification and utilization of kaolin tailings yielded highpurity quartz sands with a quartz purity of 99.98%,and quartz sand for photovoltaic glass with a 98.83%quartz purity,which meets the requirements of the JC/T 2314—2015"Siliceous raw materials for photovoltaic glass".

关 键 词：高岭土 尾矿 粒径 分级利用 高纯石英 光伏玻璃 

分 类 号：TD97[矿业工程—选矿] X75[环境科学与工程—环境工程]