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本文研究了从硫酸处理磷灰石付产品中提纯稀土精矿的可行性,特别引入注目的是除硅。氢氧化物沉淀和草酸沉淀生产的混合氧化稀土的稀土含量达99.6％。
This article examines the feasibility of purifying rare earth concentrates from sulfuric acid-treated apatite products, with a particular focus on silicon removal. The rare earth content of the mixed oxide rare earth produced by the precipitation of hydroxide and oxalic acid precipitation reaches 99.6%.