摘要
磷矿中伴生的微量稀土元素是一种潜在的、具有很高开发利用价值的稀土资源,因此从磷矿中分离回收稀土元素倍受关注。作者就磷矿中伴生稀土元素的赋存状态和分离提取研究现状进行了分析综述。目前磷矿中伴生的稀土元素主要采用浮选法和酸浸沉淀法进行分离和富集,稀土元素主要利用硝酸、硫酸和混酸等酸性介质进行浸出,而从酸浸液中提取稀土元素则多采用有机溶剂萃取和树脂吸附。
The associated trace rare-earth elements in phosphorus ore are a kind of rare earth resources having the potentially and very high development value, so separating and recovering the rare-earth el- ements from phosphorus ore draw greater attention. This article analyzed on the occurrence state and the separation and extraction research status of the associated rare-earth elements in the phosphorus ore. Currently,the associated rare-earth elements in the phosphorus ore are mainly separated and en- riched with the flotation method and acid leaching precipitation method, which the rare-earth elements are mainly leached with the nitric acid, sulfuric acid, mixed acid and so on acidic medium, and extrac- ting the rare-earth elements from the acid leaching solution uses the organic solvent extraction and res- in adsorption.
出处
《化工科技》
CAS
2014年第2期65-69,共5页
Science & Technology in Chemical Industry
基金
国家自然科学基金资助项目(21066003)
云南省人培项目(kksy201305126)
关键词
磷矿
稀土
分离
富集
浸出
提取
Phosphorus ore
Rare earth
Separation, Enrichment
Leaching
Extraction
