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| Effect of Particle Size on Roasting Desulfurization of High-sulfur Bauxite |
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Received:December 22, 2014
Revised:December 23, 2014
Accepted:December 26, 2014
Published Online:April 21, 2015
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| DOI：10.3969/j.issn.1007-7545.2015.05.009 |
| KeyWord:high-sulfur bauxite; roasting; desulfurization; particle size |
| Author | Institution |
| zhangman |
贵州大学 |
| Chen chao-yi |
贵州大学 |
| LI Jun-qi |
贵州冶金工程与过程节能重点实验室 |
| ZHAO Cong |
贵州冶金工程与过程节能重点实验室 |
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| Abstract: |
| The effects of roasting pretreatment on macro morphology, particle size distribution, sulfur content, phase structure and mineral microstructure were investigated based on different particle size of high-sulfur bauxite. The results show that the roasting effect of coarse particle size of millstone-milling is better than that of finer grain size of ball-milling. Ore particle size has a tendency to be refined after roasting. Pyrite in millstone-milling ore is oxidized to hematite, and particles become relatively loose. Ball grinding ore contains trace magnetite. Sulfur content in calcining declines from 2.3% to 0.48% with roasting at 700 ℃ for 30 min which satisfied industrial production requirement. |
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