包头稀土精矿硫酸低温焙烧分解工艺研究  

New Technique of Decomposition of Rare Earth Concentrate

作　　者：王秀艳[1] 马 张丽萍[1] 张军[1] 白彦[1] 许延辉[1] 郝先库[1] 

机构地区：[1]包头稀土研究院,内蒙古包头014010

出　　处：《稀土》2003年第4期29-31,共3页Chinese Rare Earths

摘　　要：采用浓硫酸低温焙烧的方法分解包头稀土精矿,考察了矿酸比、焙烧温度、焙烧时间等几个因素对矿分解率及对钍分布的影响。结果水浸渣的放射性总比放符合国家低放渣排放标准,稀土和钍的浸出率均达到95%以上。Decomposition of Baotou rare earth corcentrate was carried out by using contentrated sulfuric acid at low temperatureThe effects of ratio of ore to sulfuric acid,roasting temperature and time on the decomposition were studied. The results show that the leaching rate of both REO and ThO2 is up to 95% and the dregs is in accord with radioactivity standard of China.

关 键 词：低温焙烧 稀土精矿 硫酸分解工艺 浸出率 

分 类 号：TF845[冶金工程—有色金属冶金]