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有色金属(冶炼部分):2021,(10):42-49
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萃淋树脂法制备超高纯氯化钕工艺研究
(江西离子型稀土工程技术研究有限公司)
Study on Preparation of High-Purity Neodymium Chloride by Extraction Resin
LAN Qiao-fa1, QIU Xiao-ying2, KE Zhao-hua, HUANG Jin
(1.Jiangxi Ionic Rare Earth Engineering Research Co.,Ltd;2.Jiangxi Ionic Rare Earth Engineering Research Co,Ltd)
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投稿时间:2021-07-02    修订日期:2021-07-08
中文摘要: 以单一盐酸溶液为淋洗剂,采用萃淋树脂法制备超高纯氯化钕溶液。研究了CL-P507、CL-P204、001×7、001×8、D113、D900、DH100等7种树脂对RE3+、Al3+的吸附、解析、分离性能,遴选CL-P507为分离树脂、DH100为除铝树脂。单因素条件试验发现,加液方式、料液浓度、淋洗酸浓度、柱径比对流出液稀土纯度影响不显著,高料液浓度、高淋洗酸浓度、低柱径比可以获得较高浓度的超高纯氯化钕溶液,以正吸附方式加料、料液浓度30.89 g/L、淋洗酸浓度0.3 mol/L、柱径比20︰1为最优工艺条件,制备了纯度>99.999%的超高纯氯化钕溶液。工艺不使用任何延缓离子,从源头控制非稀土杂质的引入,为超高纯稀土溶液的制备提供了技术参考。
中文关键词: 氯化钕  萃淋树脂法  提纯  超高纯
Abstract:Extraction resin was used to prepare high-purity neodymium chloride solution with single hydrochloric acid as desorption reagent. Adsorption, desorption and separation factor of CL-P507, CL-P204, 001×7, 001×8, D113, D900 and DH100 resin on RE3+ and Al3+ were studied. CL-P507 and DH100 were selected as separation resin and aluminum removal resin respectively. The single factor condition experiment shows that feeding method, feed liquor concentration, desorption acid concentration and column diameter ratio have no significant effect on rare earths purity of effluent solution. High feed concentration, high desorption acid concentration and low column diameter ratio can obtain high concentration of high-purity neodymium chloride solution. High-purity neodymium chloride solution (>99.999%) is prepared under the optimum conditions including positive adsorption feeding, feed concentration of liquor of 30.89 g/L, desorption acid concentration of 0.3 mol/L, and column diameter ratio of 20︰1. This preparation method does not use any delay ions, which avoids presence of non-rare earth impurities from source, and provides a technical reference for preparation of high-purity rare earths.
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基金项目:江西省重点研发计划项目(20192BBE50029、20192BBG70052)、赣州市科技计划项目(赣市科发[2019]60号)
引用文本:
蓝桥发,邱小英,柯兆华,黄金.萃淋树脂法制备超高纯氯化钕工艺研究[J].有色金属(冶炼部分),2021(10):42-49.
LAN Qiao-fa,QIU Xiao-ying,KE Zhao-hua,HUANG Jin.Study on Preparation of High-Purity Neodymium Chloride by Extraction Resin[J].Nonferrous Metals (Extractive Metallurgy),2021(10):42-49.

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