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| Process Study on Iron Extraction with Magnetic Separation from Combined Modification of Copper Slag and Magnesium Slag |
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Received:June 24, 2019
Revised:June 26, 2019
Accepted:July 01, 2019
Published Online:October 23, 2019
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| DOI：doi：10.3969/j.issn.1007-7545.2019.11.003 |
| KeyWord:copper slag; magnesium slag; magnetic separation; modification |
| Author | Institution |
| JIANG Liang |
北方民族大学材料科学与工程学院;北方民族大学“粉体材料与特种陶瓷”重点实验室 |
| YE Yu-xin |
北方民族大学材料科学与工程学院 |
| LI Peng-xiang |
北方民族大学材料科学与工程学院 |
| ZHANG Xiang |
北方民族大学材料科学与工程学院 |
| CHEN Yu-hong |
北方民族大学材料科学与工程学院 |
| HAN Feng-lan |
北方民族大学材料科学与工程学院 |
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| Abstract: |
| Industrial copper slag was modified by mixing industrial magnesium slag with a certain proportion. The modified slag was magnetic separated. Analysis on mineral phase changes in mixed slag before and after modification was carried out by XRD, SEM analysis and thermodynamic calculation. The results show that composite modification of copper slag and magnesium slag can effectively transform iron-rich phase of iron olivine into ferromagnetic magnesia spinel in copper slag, and the latter can be effectively separated by magnetic separation. Decrease of alkalinity is favorable for formation of magnesium iron spinel in mixed slag but is not favorable for silicate. The optimum setting of basicity in the experimental range is 2.05. Magnetic separation yield and recovery of mixed slag are 65.32% and 79.34%, respectively, and content of silicate phase in tailings after magnetic separation is relatively high. |
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