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六、七十年代,国内:对磷矿进行普查和评价时发现某些磷矿中含有稀土、铀、钒等有用元素。贵州省某磷矿储量巨大,稀土含量平均为0.1％。所以贵州省科委组织了贵州省冶金研究所、化工研究所、地质局实验室等单位先后对该矿的地质、物相,磷和稀土的富集开展丁试验工作。 地质局实验室的物相工作认为,由于稀土的离子半径与钙离子半径相近。所以稀土元素在磷块岩沉积过程中,以离子交换形式置换了钙,呈类质同象存在于胶磷矿中。胶磷矿中稀土含量达1.84％。另外,一在采用反
Sixties and seventies, China: The survey and evaluation of phosphate rock found that some phosphate rock contains rare earth, uranium, vanadium and other useful elements. A large phosphate rock reserves in Guizhou Province, the average rare earth content of 0.1%. Therefore, Guizhou Province Science and Technology Commission organized the Metallurgical Research Institute of Guizhou Province, Institute of Chemical Industry, Geological Bureau laboratories and other units of the mine have geological, phase, phosphorus and rare earth enrichment to carry out Ding test work. Geological Bureau of the physical phase of the laboratory that, due to rare earth ion radius and calcium ion radius similar. Therefore, rare earth elements in the phosphorite deposition process, in the form of ion exchange to replace the calcium, were present in the type of colloidal phosphogypsum. Rare earth content in the phosphate rock reaches 1.84%. In addition, one used in reverse