| 沉淀浮选法回收废液中稀土的实验研究 |
| 摘要点击 1397 全文点击 1202 |
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| 中文关键词 稀土 沉淀浮选 捕收剂 废水处理 |
| 英文关键词 recovery of rare earth waste acid precipitation flotation |
| DOI 10.13227/j.hjkx.19910110 |
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| 中文摘要 |
| 依据沉淀浮选法的基本原理,提出了从废酸中回收RE2O3的方法.用Na2SO4作沉淀剂,与RE3+形成溶解度小的RE2(SO4)3·xNa2SO4·yH2O复盐;用月桂胺作捕收剂浮选回收,RE2O3的回收率达98%以上。用(NH4)2SO4作沉淀剂分离废酸中的Ca2+,去除率达99%,从而使浓度为2mol/L的HCl废酸能循环使用。 |
| 英文摘要 |
| In water or acid liquid that containing RE3+ Na2SO4 was used as a precipitant, which would .react with RE and fom RE2(SO4)3·xNa2SO4·yH2O, a complex salt. Then by using lauric amine as a collector, RE2O3 was recove-red, the recovery rate got above 98%. In order to separate Ca2+ in waste acid, (NH4)2SO4 was used as a precipitant, by which the removal rate attained 99%. After revovering rare earth and removing Ca2+ in waste acid, the renewed acid can be reused. |
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