三门峡变质石英砂岩工艺矿物学和可选性研究
Process Mineralogy and Beneficiability of Metamorphic Quartz Sandstone from Sanmenxia
王路路 1管俊芳 1宋昱晗 1孙睿 1任子杰 1李航1
作者信息
- 1. 武汉理工大学 资源与环境工程学院,湖北 武汉 430070
- 折叠
摘要
以三门峡地区变质石英砂岩为对象,进行了矿石的工艺矿物学和可选性试验研究.结果表明,该矿石为变余砂状结构,致密块状构造,矿石的SiO2 含量(质量分数,下同)为97.60%,杂质元素主要是铝、铁、钾、钙、镁、磷等.目的矿物为石英,磨圆较好,次生加大发育(硅质胶结),杂质矿物有长石、金红石、电气石和赤褐铁矿等.石英粒径分布在0.1～0.4 mm,+0.1 mm石英的累计分布率达到94.89%;对该矿石试样采用"磨矿-分级-磁选"工艺提纯后,制备石英砂可满足JC/T 529-1994平板玻璃用I类优等品指标要求,采用"磨矿-分级-磁选-浮选"工艺后,石英砂可满足QB/T 2196-1996仪器玻璃用石英砂产品指标要求,采用"磨矿-分级-磁选-浮选-酸浸"工艺后,SiO2 含量提升至99.91%,杂质元素Fe2O3 为0.008 6%,Al2O3为0.045%,石英砂可满足JC/T 2314-2015光伏玻璃用硅质原料指标要求.
Abstract
In this paper,the process mineralogy of metamorphic quartz sandstone in Sanmenxia area is systematically studied,and the beneficia-bility test of ore is carried out.The results show that,the ore has a blastosand-like structure and a dense massive structure.The content of SiO2 in the ore is 97.60%,and the impurity elements are mainly aluminum,iron,potassium,calcium,magnesium and phosphorus.The target mineral is quartz,well rounded,secondary enlarged development(siliceous cementation),and the impurity minerals are feldspar,rutile,tourmaline and red limonite.The quartz particle size is 0.1-0.4 mm,and the cumulative distribution rate of+0.1 mm quartz is 94.89%;After the ore sample is purified by the grinding-classification-magnetic separation process,the prepared quartz sand meets the requirements of Class I excellent products for JC/T 529-1994 flat glass;after the grinding-classification-magnetic separation-flotation process,the quartz sand can meet the product requirements for QB/T 2196-1996 instru-ment glass;after the grinding-classification-magnetic separation-flotation-acid leaching process,SiO2 content increases to 99.91%,impurity elements Fe2O3 is 0.008 6%,Al2O3 is 0.045%,quartz sand can meet the standard for JC/T 2314-2015 photovoltaic glass silica raw materials.
关键词
石英/变质石英砂岩/工艺矿物学/可选性试验Key words
quartz/metamorphic quartz sandstone/process mineralogy/beneficiability test引用本文复制引用
出版年
2024
NETL
NSTL
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