【摘要】 结合矿山工艺研究了难溶稀土草酸盐转化反应的工艺参数，提出用碳酸铵盐转化传统的稀土草酸盐中的无价值草酸物质，直接用于提取稀土工艺。四次循环模拟工业试验结果表明，草酸循环使用率53．4％，产品质量提高，生产费用降低。更多还原

【Abstract】 Combining with the rare earth mining process, the technology of substituting ammonium carbonate for oxalic acid was studied. The regenerated oxalic acid was directly used for extraction of rare earth. The relative coefficients were also reported. The results from four recycle experiments of imitating industrial production showed that the cycling use rate of oxalic acid was 53. 4%, the quality of product could be rrised, and the production cost could be reduced.更多还原