硝酸分解磷矿提取稀土的技术研究进展

Technique research advance of extracting rare earth from nitric acid decomposing phosphate rock

回收利用磷矿中微量的稀土资源有重要的意义。作者介绍了从磷矿中提取稀土的方法,重点阐述了中和沉淀法、溶剂萃取法和结晶法从硝酸分解液中提取稀土的原理、研究进展以及优缺点。采用溶剂萃取法提取稀土仍是当前的主流,目前的主要困难是稀土的萃取技术,如能开发出便宜的高效萃取剂,该方法将会迅速发展。

Recycling and utilizing the trace rare earth in phosphate rock has an important significance.This paper introduced the methods of extracting rare earth from phosphate rock,expounded the principle,research advance,advantages and disadvantages of neutralization precipitation method,solvent extraction method and crystallization method extracting rare earth from nitric acid decomposition solution.Using solvent extraction method to extract rare earth is still the mainstream of the current;at present,the main difficulty is extraction technology of rare earth,if a cheap and efficient extracting agent can be developed,this method will develop rapidly.