湖北某磷石膏工艺矿物学分析及提纯试验研究  

Mineralogical Analyses and Purification of Phosphogypsum in Hubei Province

作　　者：王忠红 李育彪[1,2] 韩厚胜 李万青 顾雲翔 薛璐韬 陈绍华 叶恒朋 Wang Zhonghong;Li Yubiao;Han Housheng;Li Wanqing;Gu Yunxiang;Xue Lutao;Chen Shaohua;Ye Hengpeng(School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan,Hubei 430070;Key Laboratory of Green Utilization of Critical Non-metallic Mineral Resources,Ministry of Education,Wuhan,Hubei 430070;College of Resources and Environmental Science,South-Central Minzu University,Wuhan,Hubei 430074)

机构地区：[1]武汉理工大学资源与环境工程学院,湖北武汉430070 [2]非金属矿产资源绿色利用教育部重点试验室,湖北武汉430070 [3]中南民族大学资源与环境学院,湖北武汉430074

出　　处：《非金属矿》2023年第6期57-60,共4页Non-Metallic Mines

基　　金：湖北省科技重大专项(2022ACA004-6)。

摘　　要：为探究湖北某磷石膏除杂方法,提升磷石膏的纯度和白度,采用矿物自动分析系统(AMICS)分析工艺矿物学,查明了矿石的矿物组成、主要化学成分、部分元素在矿物中的分配、粒度分布、重要矿物的嵌布特征及解离情况等。工艺矿物学结果表明,该磷石膏样品的主要组成矿物为石膏,含量(质量分数,下同)为80.46%,其次为石英及钾长石、胶磷矿,还有少量白云母、斜长石、重晶石,金属矿物主要有黄铁矿、褐铁矿和金红石,含量均较低。根据AMICS分析结果进行磷石膏湿式球磨和反浮选试验,结果表明,湿式球磨可显著提高磷石膏浮选精矿的白度,随着磨矿时间的增加,精矿产率、硅含量、有机质含量、可溶性P_(2)O_(5)含量均降低。磨矿时间为10 min时,磷石膏精矿指标最好,此时产率73.56%,白度73.89%,精矿中SiO_(2)含量为1.81%,可溶性P2O5含量为0.069%,可溶性F-含量为0.032%,有机质含量为0.012%。In order to investigate the impurity eliminations method of phosphogypsum in Hubei Province,improve the purity and whiteness,the automatic mineral analysis system(AMICS)was applied to systematically investigate the process mineralogy,including the mineral composition and characteristics,the elemental distribution,the particle size distribution,the embedded characteristics and dissociation of important minerals.The process mineralogy showed that the main minerals of the phosphogypsum sample were gypsum with a content of 80.46%,followed by quartz and feldspar,phosphate rock,and a small amount of muscovite,plagioclase and barite.The metallic minerals mainly included pyrite,limonite and rutile with low content.The results showed that wet ball milling significantly improved the whiteness of the flotation concentrate,but with the increase of grinding time,the contents of silicon,organic matter and soluble P_(2)O_(5)were reduced.The phosphogysum concentrate indexes were the best when the grinding time was 8 min,its yield was 73.56%,whiteness was 73.89%,SiO_(2)content was 1.81%,soluble P2O5 content was 0.069%,soluble F-content was 0.032%,and organic matter content was 0.012%.

关 键 词：磷石膏 嵌布特征 粒度分布 湿式球磨 反浮选 

分 类 号：TD97[矿业工程—选矿] TQ177.375[化学工程—硅酸盐工业]