高纯石英前体砂球磨工艺研究  

Study on the Influence of Early Grinding Behavior on the Quality of High Purity Sand Production from Vein Quartz

作　　者：胡修权 张立 张晋 尤大海 李国栋 张朝宏 Hu Xiuquan;Zhang Li;Zhang Jin;You Dahai;Li Guodong;Zhang Chaohong(Hubei Institute of Metallurgical Geology(Central South Institute of Metallurgical Geology),Yichang,Hubei 443003;Mineral Materials and Applied Engineering Technology Research Center of Hubei Province,Yichang,Hubei 443003;Yichang Key Laboratory of Comprehensive Utilization of Mineral Resources,Yichang,Hubei 443003)

机构地区：[1]湖北冶金地质研究所(中南冶金地质研究所),湖北宜昌443003 [2]湖北省矿物材料及应用工程技术研究中心,湖北宜昌443003 [3]矿产资源综合利用宜昌市重点实验室,湖北宜昌443003

出　　处：《非金属矿》2024年第5期1-4,共4页Non-Metallic Mines

基　　金：湖北省重点研发计划项目(2021BAA207)。

摘　　要：磨矿是岩石矿物在被开发利用前的一种预处理方式,由于目标产品、性能要求及矿物自身性质不同,所采取的磨矿方法不尽相同,效果也不同。本试验以优质脉石英为原料,通过对罐体和磨球材质、介质级配、介质及矿物填充率、研磨时间及干湿法对比等工艺条件及参数进行研究。结果表明,罐体材质对产品纯度的影响相较磨球材质的影响更大。柔性材质聚氨酯橡胶(PR)罐体更有利于减少过粉碎现象。将钇稳定氧化锆陶瓷球+聚氨酯橡胶罐用于高纯石英砂前期磨矿作业,能有效避免外来杂质元素尤其是Al、Fe等金属元素的污染。矿物填充量及研磨时间对磨矿产率影响较大,当矿物填充率质量分数为15%~25%,研磨时间为30 min,有效粒度60~200目(0.074~0.25 mm)区间产率最高,可达60%。采用湿法研磨工艺能最大限度避免介质磨损,此时研磨介质每吨矿每小时磨损率仅为0.038%,而干法磨损率为0.86%,湿法磨矿更加经济,产品高纯度更有保障。Grinding is a pretreatment method of rock minerals before being developed and utilized.The grinding methods adopted are different for different target products,performance requirements and mineral properties,the results are different.In this paper,high-quality vein quartz is used as raw material.The technological conditions and parameters such as material of tank and grinding ball,medium gradation,filling rate of medium and mineral,grinding time and comparison between dry and wet method are studied.The results show that the influence of tank material on product purity is greater than that of grinding ball material.the PR tank made of flexible material is more favorable to reduce over-comminution.The yttrium-stabilized zirconia ceramic ball and polyurethane rubber pot are used in the pre-grinding of high purity quartz sand,can effectively avoid the pollution of foreign impurity elements,especially Al,Fe and other metal elements.When the mineral filling rate is 15%-25%and the grinding time is 30 min,the effective grain size is 60-200 mesh(0.074-0.25 mm)and the grinding yield reaches 60%.The wet grinding process can avoid media wear to the maximum extent,and the wear rate of grinding medium is only 0.038%when one ton of ore is ground for one hour,while that of dry grinding is 0.86%.The wet grinding process is more economical and the product with high purity is more secure.

关 键 词：脉石英 高纯石英 球磨工艺 研磨介质 矿物填充率 有效粒度 

分 类 号：TB32[一般工业技术—材料科学与工程] TD985[矿业工程—选矿]