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| Study on Smelting of High Carbon Ferrochrome with Microwave Heating |
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Received:August 03, 2020
Revised:August 12, 2020
Accepted:August 14, 2020
Published Online:October 31, 2020
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| DOI：doi：10.3969/j.issn.1007-7545.2020.11.015 |
| KeyWord:microwave heating; carbon allocation; slag allocation; recovery rate |
| Author | Institution |
| ZHAO Zhi-min |
中国钢研科技集团 新冶高科技集团有限公司 |
| PANG Jian-ming |
中国钢研科技集团 新冶高科技集团有限公司 |
| FANG Jian-feng |
中国钢研科技集团 新冶高科技集团有限公司 |
| DI Jiu-hai |
中国钢研科技集团 新冶高科技集团有限公司 |
| LI Shi-wen |
中国钢研科技集团 新冶高科技集团有限公司 |
| HE Jia-qing |
中国钢研科技集团 新冶高科技集团有限公司 |
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| Abstract: |
| In order to develop a new clean and efficient high-carbon ferrochrome smelting process, experiments of microwave heating chrome ore pellets to smelt high-carbon ferrochrome were carried out. Influence of proportion of carbon and slag allocation on recovery rate of chromium was investigated. The results show that microwave heating of chromium ore pellets for 100 to 120 minutes can reach a high-carbon ferrochrome smelting temperature of 1 550—1 620 ℃, and obtain high-carbon ferrochrome that meets the requirements of national standards with chromium recovery rate of 94% above. When carbon allocation coefficient is 1.1 and silica is added to make slag R=SiO2/(MgO+Al2O3)=0.55, the smelting effect is the best. When R value is lower, chromium content in alloy and recovery rate are significantly reduced, which can be improved by prolonging microwave heating time. |
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