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 temperatureThe 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 ThO2 is up to 95% and the dregs is in accord with radioactivity standard of China.
出处
《稀土》
EI
CAS
CSCD
北大核心
2003年第4期29-31,共3页
Chinese Rare Earths
关键词
低温焙烧
稀土精矿
硫酸分解工艺
浸出率
decomposition
sulfuric acid
roast at low temperature
rare earth concentrate
