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| Study on Preparation of Battery Grade Lithium Carbonate and Iron Phosphate from Iron Lithium Waste Recycling |
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Received:December 24, 2018
Revised:December 26, 2018
Accepted:January 03, 2019
Published Online:March 19, 2019
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| DOI：doi：10.3969/j.issn.1007-7545.2019.04.017 |
| KeyWord:iron-lithium scrap; selective; recycling; Li2CO3; FePO4•2H2O |
| Author | Institution |
| zhouyouchi |
赣州有色研究研究所 |
| WEN Xiao-qiang |
赣州有色研究研究所 |
| GUO Chun-ping |
赣州有色研究研究所 |
| LIU Wen-wen |
赣州有色研究研究所 |
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| Abstract: |
| Lithium was selectively extracted from iron-lithium waste with HCl+H2O2. Li2CO3 was precipitated from leachate after purification. Leaching residue was dissolved by HCl to prepare FePO4?2H2O under controlled pH value with Na2CO3. Effects of HCl dosage, H2O2 dosage and ratio of liquid to solid on Li leaching rate were investigated. Effects of reaction pH value, reaction temperature and Fe/P ratio of reactant on product quality of FePO4?2H2O were studied. Li3PO4 was obtained by mixing solution of two procedures. Li yield rate is 97%. Fe yield rate is 98% without generation of Fe-bearing residue. |
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