稀土与天青石共伴生矿焙烧及浸出过程研究  

Metallurgical Processing of Celestite-Associated Rare Earth Ore

作　　者：冯兴亮[1] 黄小卫[1] 张国成[1] 龙志奇[1] 崔大立[1] 赵娜[1] 

机构地区：[1]北京有色金属研究总院稀土材料国家工程研究中心,有研稀土新材料股份有限公司,北京100088

出　　处：《中国稀土学报》2012年第1期113-119,共7页Journal of the Chinese Society of Rare Earths

基　　金：国家发改委重大产业技术开发专项(发改办高技[2009]606号);国家自然科学基金项目(50934004);水体污染控制与治理科技重大专项(2009ZX07529-005)资助

摘　　要：稀土与天青石共伴生多金属矿主要由稀土氟碳酸盐和天青石组成,研究了含稀土和锶的混合矿的焙烧及浸出过程,考察了焙烧温度、焙烧时间、浸出初始酸浓度、浸出温度、浸出时间等对浸出率的影响,获得优化的工艺参数为:焙烧温度500℃,焙烧时间2 h,浸出初始酸浓度1.0 mol.L-1,浸出温度35℃,浸出时间1 h,稀土浸出率达95%以上,锶浸出率小于5%,几乎不进入溶液相而保留在固相浸出渣中得以分离和富集。The main constituent of a celestite-associated rare earth ore are bastnaesite and celestite.The metallurgical process of RE-Sr associated ore was studied.The raw ore was baked at a low temperature.The effect of roasting temperature,roasting time,initial acid concentration of leaching,leaching temperature and leaching time on leaching rate were investigated.The optimized parameters were as follows： roasting temperature of 500 ℃;roasting time of 2 h;initial leaching acid concentrate of 1.0 mol · L-1;leaching temperature of 35 ℃;leaching time of 1 h.The leaching rate of RE was higher than 95%.Sr was enriched in the slag.

关 键 词：氟碳铈矿 天青石矿 氧化焙烧 冶炼 综合回收 稀土 

分 类 号：TF845.6[冶金工程—有色金属冶金]