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| Desilication Effect of Silica Residue for Normal-pressure Desilication |
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Received:February 04, 2012
Revised:February 07, 2012
Accepted:February 08, 2012
Published Online:August 20, 2012
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| DOI：doi：10.3969/j.issn.1007-7545.2012.09.009 |
| KeyWord:alumina; silica index; silica residue; normal-pressure desilication; crystal seed; sintering process |
| Author | Institution |
| Ma Keyou |
济源职业技术学院 |
| Wang Hongwei |
济源职业技术学院 |
| Long Jianhua |
中铝公司河南分公司研究所 |
| Qin Fengting |
济源职业技术学院 |
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| Abstract: |
| Silica residue was used as crystal seed for normal-pressure desilication in desilication process of sintering. The desilication effects were investigated with respect to different alumina concentration, seed additive amount and αk of raw liquor. Desilication effects were compared with those of Bayer red mud as crystal seed. The results show that the silica index can be improved up to over 300 under the following conditions including Al2O3 concentration of raw liquor of 110~125 g/L, αk=1.40~1.50, desilication temperature of 100 ℃, desilication time of 4 h, and seed amount of 50g/L. |
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