氟碳铈矿纯碱焙烧-盐酸浸出工艺研究  

Study on the Extraction Process of DecomposingBastnaseite by Sodium Carbonate Roasting and Hydrochloric Acid Leaching

作　　者：阳启华 吴金玲 王日 Yang Qihua;Wu Jinling;Wang Ri(Jiangxi Copper Technology Research Institute Co.,Ltd.,Nanchang 330096,China)

机构地区：[1]江西铜业技术研究院有限公司,江西南昌330096

出　　处：《山东化工》2020年第20期30-32,36,共4页Shandong Chemical Industry

摘　　要：为提高氟碳铈精矿中高价值元素镨钕收率,系统地研究了碳酸钠焙烧时间、焙烧温度、碱矿比以及酸浸时间、盐酸用量、酸浸温度、液固比等因素的变化对REO及镨钕浸出率的影响。通过实验研究得出了焙烧及浸出氟碳铈矿的最佳工艺条件:焙烧温度650℃,碱矿比0.30,焙烧时间5h;酸浸温度80~90℃,液固比4,浸出时间30min,总酸用量碱焙烧矿,可得REO浸出率63.31%,镨钕浸出率96.70%。From the view of getting the higher recovery of Pr and Nd,The effects of roasted time,roasted temperature,massratio of alkali-to-ore,leaching temperature,chlorhydric acid dosage,leaching time,solid-liquid ratio on the leaching rate of REOand PN(Pr and Nd)were studied systemically in this paper.The results indicated that the leaching rate of REO and PN were 63.31% and 96.70% under the optimum conditions of roasted temperature 650℃,massratio of alkali-to-ore 0.3,roasted time 5h,leaching temperature 80~90℃,leaching time 30 min,solid-liquid ratio 4,chlorhydric acid dosage135mL/100groasted ore.

关 键 词：氟碳铈矿 碳酸钠焙烧 酸浸 

分 类 号：TF803.21[冶金工程—有色金属冶金]