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织金含稀土磷矿酸法浸出性能及预处理优化工艺试验    

Acid Leaching Performance of Zhijin Rare-earth Phosphate Ore and Its Improvement Experiments by Pretreatment

文献类型:期刊文献

中文题名:织金含稀土磷矿酸法浸出性能及预处理优化工艺试验

英文题名:Acid Leaching Performance of Zhijin Rare-earth Phosphate Ore and Its Improvement Experiments by Pretreatment

作者:路坊海 郑凯 王芝成 谷晓斐 谢瑜春 陈松 吕梦岚 陈娟 蔡诚

第一作者:路坊海

机构:[1]贵州理工学院材料与冶金工程学院,贵阳550003;[2]贵州理工学院化学工程学院,贵阳550003;[3]贵州理工学院贵州省轻金属材料制备技术重点实验室,贵阳550003;[4]国家电投集团贵州遵义产业发展有限公司,贵州遵义564300

第一机构:贵州理工学院材料与冶金工程学院

年份:2019

卷号:0

期号:12

起止页码:33-38

中文期刊名:有色金属:冶炼部分

收录:CSTPCD;;北大核心:【北大核心2017】;

基金:贵州省科技厅项目(黔科合服企GY字[2015]4009号);贵州省教育厅项目(黔教合KY字[2014]214号);贵州省高层次创新型人才培养项目(GZSQCC2018002);贵州理工学院大学生创新创业训练计划项目(201714440218)

语种:中文

中文关键词:织金含稀土磷矿;浸出;预处理;富集

外文关键词:Zhijin rare-earth phosphate ore;leaching;pretreatment;enrichment

摘要:硫酸、盐酸、磷酸和硝酸对原生织金磷矿的稀土组分浸出效率不理想,总稀土浸出效率不到36%。采用焙烧活化—硝酸氨水混合预浸出处理织金磷矿,最适宜条件下,CaO和MgO的浸出率分别为24.55%和19.75%,相应的P 2O 5和稀土元素(Y、La、Nd、Ce)损失率为11.25%和3.61%。所得精矿中,Y、La、Nd、Ce和P 2O 5实现了不同程度的富集。预处理精矿的浸出性能较原矿显著改善,硝酸体系下P 2O 5和稀土元素(Y、La、Nd、Ce)浸出效率提高了近40个百分点。
Total rare earth leaching efficiency of rare earth elements in Zhijin rare-earth phosphate ore by dosing H 2SO 4,HCl,H 3PO 4 and HNO 3 was less than 36%.The process named activated roasting and leaching with mixture of nitric acid and ammonia was proposed for comprehensive utilization of Zhijin rare-earth phosphate ore.Under the optimum conditions,leaching rates of CaO and MgO are 24.55%and 19.75%,respectively,and corresponding loss rates of P 2O 5 and rare earth elements(Y,La,Nd,Ce)are 11.25%and 3.61%,respectively.Y,La,Nd,Ce and P 2O 5 in obtained concentrates achieve certain enrichment.Leaching performance of concentrates is significantly improved compared with raw ore and leaching efficiencies of P 2O 5 and rare earth elements(Y,La,Nd,Ce)in HNO 3 system rise by nearly 40 percent point.

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