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| Desilication of Bauxite with High-Silicon by Dissolution |
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Received:February 22, 2013
Revised:April 01, 2014
Accepted:February 26, 2013
Published Online:May 28, 2014
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| DOI： |
| KeyWord:bauxite; dissolution; desilication |
| Author | Institution |
| huzhikai |
Beijing General Research Institute of Mining and Metallurgy |
| sunwei |
central south university |
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| Abstract: |
| 183: In order to eliminate the detrimental effect of silicon on bauxite and raise the A/S ratio, we dissolve silicon by low-pressure autoclave after mineral was roasted half an hour at 1180℃ by electric furnace. The optimal conditions are as follow: dissolving temperature is 120℃,dissolving time is 15 min, liquid-solid ratio is 10/1 and concentration of NaOH solution is 40%. The dissolved rate of silica can reach 42%. A/S ratio can rise from 2.52to 5.03 |
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