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| Study on Reduction Smelting Slag Type of High Magnesium-bearing Laterite |
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Received:March 10, 2017
Revised:March 17, 2017
Accepted:March 20, 2017
Published Online:June 19, 2017
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| DOI：doi：10.3969/j.issn.1007-7545.2017.07.004 |
| KeyWord:smelting reduction; MgO; laterite ore; slag type; ferronickel |
| Author | Institution |
| LIU Chang |
上海大学 |
| ZHENG Shao-bo |
省部共建高品质特殊钢冶金与制备国家重点实验室 |
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| Abstract: |
| The process to produce ferronickel alloy with Ni>25% by laterite ores smelting reduction under condition of high oxygen level was put forward. High MgO-bearing smelting slag was proposed based on phase diagrams, thermodynamic calculations, and slag thermophilic properties. Metallurgical properties of FeO-SiO2-CaO-MgO-Al2O3 pentad slag were verified and effect of MgO on slag was analyzed. The results show that the slag with MgO content of 19%~21% has low melting temperature and suitable viscosity. NiO content in slag can be controlled at 0.05% below. |
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