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| EXPERIMENTAL STUDY ON REDUCTION ROASTING OF ZINC FERRITE |
| Received:November 19, 2010 |
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| DOI：10.3969/j.issn.1005-7854.2011.03.017 |
| KeyWord:zinc calcine； reduction roasting； leaching； leaching rate；iron concentrate |
| Author | Institution |
| XIE Li-qun |
Faculty of Metallurgy and Energy Engineering, Kunming University of Science and Technology， Kunming ，China |
| SHI Zhe |
Faculty of Metallurgy and Energy Engineering, Kunming University of Science and Technology， Kunming ，China |
| HU Han |
Faculty of Metallurgy and Energy Engineering, Kunming University of Science and Technology， Kunming ，China |
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| Abstract: |
| Zinc calcine is reduction roasted and then the reduced calcine is leached. The leaching temperature is 70~80℃, pH value is 2~3, and leaching time is 2h. The comparing experiments show that the best reduction temperature is 900℃ and roasting time is 60min, with pulverized coal proportion as 1:10. Under this condition, the zinc leaching rate can reach about 90% and the iron leaching rate can reach about 15%. The leaching slag is treated by magnetic separation, and iron concentrate is obtained. |
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