Impurities inhibited leacning of the leach liquor of the weathered crust elution-deposited rare earth ore by adding aluminum inhibitor
Impurities inhibited leacning of the leach liquor of the weathered crust elution-deposited rare earth ore by adding aluminum inhibitor
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发表时间：
2012
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通讯作者：
Wu Hong-qiang
中科院分区：
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作者：
Wu Hong-qiang
在风化壳淋溶稀土浸出过程中，加入了适合华南地区离子型稀土的铝抑制剂作为浸出剂。抑制剂的加入对稀土浸出率影响不大。浸出液为Al3+ 2 mg/L，Fe3+ 0.3 mg/L，杂质去除率达98%。浸出液采用碳酸氢铵沉淀，不经提纯处理。碳化稀土符合国家质量要求。该技术有效地简化了生产过程，使稀土的损失率降低了5% ~ 15%。
Aluminum inhibitors,which are suitable for the ion-typed rare earth in South China,were added as leaching agents in the leaching process of the weathered crust elution-deposited rare earth.The adding of inhibitors affects little on the RE leaching rate.The leaching solution(Al3+ 2 mg/L,Fe3+ 0.3 mg/L) was obtained with the impurity removal rate reaching 98 %.The leaching solution was precipitated by ammonium bicarbonate without purification process.The carbonated RE is corresponding to national quality requirements.The technology effectively simplify the production process for reducing RE loss by 5 % ～15 %.