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| Experimental Study on Microwave Reduction Recovery of Iron from Copper Slag - Biomass Composite Pellets |
| Received:June 16, 2021 Revised:June 23, 2021 |
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| DOI：doi：10.3969/j.issn.1007-7545.2021.10.003 |
| KeyWord:copper slag；microwave reduction；metallic iron；pellet |
| Author | Institution |
| LI Shuai |
中铝郑州有色金属研究院有限公司 |
| KANG Ze-shuang |
中铝郑州有色金属研究院有限公司 |
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| Abstract: |
| Iron content in copper slag is 30%—45%, which is higher than grade of industrial recoverable iron ore. However, iron in copper slag mainly exists in fayalite, making it difficult to extract and recycle. Iron resources in copper slag were recovered by microwave reduction and magnetic separation process with copper slag as raw material and biomass carbon as reducing agent. The results show that iron grade in iron concentrate after magnetic separation is 85.9% with iron recovery of 89.1% under the optimal reduction condition of copper slag-biomass composite pellets including reduction temperature of 1 473 K, reduction time of 90 min, and CaO addition of 15% of mass of copper slag. |
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