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离子型稀土矿山淋洗及尾水富集试验研究
引用本文:陈斌,李青,祝怡斌. 离子型稀土矿山淋洗及尾水富集试验研究[J]. 有色金属工程, 2022, 0(11)
作者姓名:陈斌  李青  祝怡斌
作者单位:矿冶科技集团有限公司,洛阳栾川钼业集团股份有限公司,矿冶科技集团有限公司
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)多金属矿山尾矿渗滤液复杂污染物的原位修复及机理研究(0102-1901)
摘    要:对浸矿后离子型稀土原地浸矿场采用清水进行淋洗,在184天的清水淋洗过程中,尾水氨氮值从最开始的507mg/L,降低至140mg/L,淋洗尾水pH4.52~3.10。淋洗尾水采用两级反渗透膜分离,既回收有价资源稀土,又能使出水氨氮达标。结果表明,产水氨氮浓度稳定低于15mg/L,对稀土的截留率高于98.25%,浓水中稀土离子平均浓度313.4mg/L,可进一步回收稀土资源。

关 键 词:离子型稀土  淋洗  尾水  膜分离
收稿时间:2022-06-03
修稿时间:2022-06-14

Experimental Study on Leaching and Leached Water Enrichment in Ionic Rare Earth
CHEN BIN,Li Qing and ZHU YIBIN. Experimental Study on Leaching and Leached Water Enrichment in Ionic Rare Earth[J]. Nonferrous Metals Engineering, 2022, 0(11)
Authors:CHEN BIN  Li Qing  ZHU YIBIN
Affiliation:BGRIMM Technology Group,China Molybdenum Co., Ltd,BGRIMM Technology Group
Abstract:Leaching on the finished in-situ leaching field of ionic rare earth with clean water, during the 184-day leaching process, the ammonia nitrogen content of the leached water could be from 507mg/L to 140mg/L. The pH of the tail water could be 4.52~3.10. The leached water was separated by two-stage RO progress, which not only recovers valuable rare earth resources, but also makes the ammonia nitrogen of effluent is better than the relevant discharge standard. The results show that, the ammonia nitrogen concentration of effluent could be reduced to to below 15mg/L after treating, the rejection rate of rare earth is higher than 98.25%, the average rare earth ion content of concentrated water was 313.4mg/L.
Keywords:ionic rare earth   leaching   leached water   membrane separation
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