Selective recovery of heavy rare earth elements from apatite with an adsorbent bearing immobilized tridentate amido ligands
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- 作者：Takeshi Ogataa ; t-ogata@aist.go.jp" class="auth_mail" title="E-mail the corresponding author ; Hirokazu Naritaa ; Mikiya Tanakaa ; Mihoko Hoshinob ; Yoshiaki Konb ; Yasushi Watanabec
- 关键词：Rare earth elements ; Apatite ; Adsorption ; Recovery ; Leaching ; Solid&ndash ; liquid extraction
- 刊名：Separation and Purification Technology
- 出版年：2016
- 出版时间：8 February 2016
- 年：2016
- 卷：159
- 期：Complete
- 页码：157-160
- 全文大小：583 K
文摘
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The recovery of heavy rare earth elements (HREEs) from apatite was investigated.
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REEs in an apatite concentrate were leached efficiently at 2 mol/L H2SO4.
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HREEs in the leachate were selectively adsorbed onto a column packed with EDASiDGA.
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Passage through the column enriched HREEs by 10- to 30-fold.
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The eluate contained only small amounts of other elements (e.g., Al, Ca, and Fe).