酸浸提纯某石英岩及浸出动力学研究  

Study on Acid Leaching Purification of a Quartzite and Leaching Kinetics

作　　者：陈意帆 任子杰[1,2] 何宇豪 高惠民 沈彦旭[1] 宋昱晗 CHEN Yifan;REN Zijie;HE Yuhao;GAO Huimin;SHEN Yanxu;SONG Yuhan(School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan,Hubei 430070,China;Hubei Key Laboratory of Mineral Resources Processing and Environment,Wuhan,Hubei 430070,China)

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]矿物资源加工与环境湖北省重点实验室,洁湖北武汉430070

出　　处：《矿业研究与开发》2024年第9期246-251,共6页Mining Research and Development

摘　　要：酸浸提纯法是石英加工提纯方法中最常用的方法之一。为探究高效去除石英中铁杂质元素的工艺及反应机理,以甘肃某地石英岩矿为研究对象,草酸和氢氟酸为浸出剂,探究了不同酸配比、质量浓度以及酸浸温度对酸浸效果的影响,并推导了混酸浸出石英岩矿的动力学模型。结果表明:酸浸温度对酸浸效果影响较大,85℃为最佳酸浸温度,1%HF+10%草酸为最佳浸出剂,酸浸后石英岩矿中的Fe_(2)O_(3)含量由磁选后精矿的442.23μg/g降低至58μg/g,除铁率可达86.88%。Acid leaching purification method is one of the most commonly used methods in quartz processing and purification.In order to explore the process and reaction mechanism of efficient removal of iron impurity elements in quartz,a quartzite ore in Gansu Province was taken as the research object,and oxalic acid and hydrofluoric acid were used as leaching agents.The effects of different acid ratios,mass concentrations and acid leaching temperatures on the acid leaching effect were investigated,and the kinetic model of mixed acid leaching of quartzite ore was derived.The results show that the acid leaching temperature has a great influence on the acid leaching effect.85℃ is the best acid leaching temperature,and 1%HF+10% oxalic acid is the best leaching agent.After acid leaching,the Fe_(2)O_(3) content of the quartzite ore is reduced from 442.23μg/g of the concentrate after magnetic separation to 58μg/g,and the iron removal rate can reach 86.88%.

关 键 词：石英岩 草酸 氢氟酸 酸浸 浸出动力学 

分 类 号：TD985[矿业工程—选矿]