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| Study on Performance of Iron Phosphate Produced by Iron Removal with Phosphoric Acid from Acid Leaching Solution of Jarosite Slag |
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Received:March 03, 2020
Revised:March 05, 2020
Accepted:March 10, 2020
Published Online:June 20, 2020
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| DOI：doi：10.3969/j.issn.1007-7545.2020.07.016 |
| KeyWord:jarosite slag; acid leaching solution; ironic phosphate; performance |
| Author | Institution |
| GAO Lixia |
广东省稀有金属研究所 广东省稀土开发及应用重点实验室 |
| DAI Zilin |
广东省稀有金属研究所 广东省稀土开发及应用重点实验室 |
| WU Haiying |
广东省稀有金属研究所 广东省稀土开发及应用重点实验室 |
| KONG Zhenxing |
广东省稀有金属研究所 广东省稀土开发及应用重点实验室 |
| WU Changyong |
广东省稀有金属研究所 广东省稀土开发及应用重点实验室 |
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| Abstract: |
| In response to the new process of “jarosite slag activation roasting, acid leaching, ferric removal with phosphoric acid, In and Zn extraction after iron removal” proposed by our research team, this paper focuses on properties and thermal analysis kinetics of iron phosphate filter slag. Chemical composition and phase of filter slag were analyzed and characterized by XRD, IR and TG-DSC. The results show that filter slag is FePO4?2H2O with average diameter of particle size of 12.6 μm. Activation energy of dehydration reaction of iron phosphate hydrate from filter slag is 47.28~52.88 kJ/mol calculated by FWO and KAS iso-conversional methods. |
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