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| Research on Viscosity of Reductive Smelting Slag of High Silicon Copper Oxide Ore and Application of Iida Model |
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Received:December 30, 2021
Revised:January 06, 2022
Accepted:January 14, 2022
Published Online:April 12, 2022
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| DOI：doi：10.3969/j.issn.1007-7545.2022.05.002 |
| KeyWord:copper oxide; reduction smelting; slag with high-silicon and low-iron; viscosity model |
| Author | Institution |
| YANG Bi-wen |
矿冶科技集团有限公司 |
| WANG Hai-bei |
矿冶科技集团有限公司 |
| ZHANG Deng-gao |
矿冶科技集团有限公司 |
| ZHENG Chao-zhen |
矿冶科技集团有限公司;北京科技大学 |
| LI Qiang |
矿冶科技集团有限公司 |
| WANG Zi-hao |
矿冶科技集团有限公司 |
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| Abstract: |
| To address the difficulty of slag-copper separation and low copper recovery of an oxide copper ore with high-silicon and low-iron in DR Congo, effects of CaO and FeO addition on viscosity of reduction smelting slag were investigated. The Iida viscosity prediction model was optimized based on the research result to support accurate control of viscosity of CaO-SiO2-MgO-Al2O3-FeO slag system. The results show that the melting slag viscosity drops gradually with increasing of content of CaO and FeO. The viscosity of slag can be effectively improved by regulating the basicity of final slag of 0.5 above and FeO content of 3% above. The modified Iida model can properly predict the viscosity of this slag system over a wide range of temperature and composition, and the relative error of forecast is within 10%. |
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