发明名称 |
Double replacement cation neutralization of high alkalinity waste materials |
摘要 |
A method of treating alkaline industrial by-products, such as red mud generated by Bayer process bauxite refining, is described. Embodiments of the method comprise treating the alkaline industrial by-products with salts of divalent and/or polyvalent cations, thereby lowering pH of the alkaline industrial by-products. The method involves replacement reactions in which relatively insoluble hydroxide salts form precipitates, thereby removing hydroxide ions from solution.
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申请公布号 |
US7914756(B2) |
申请公布日期 |
2011.03.29 |
申请号 |
US20050543241 |
申请日期 |
2005.07.26 |
申请人 |
BALDWIN JR PHILIP N;MURRAY NORMAN K;LEE CHARLES RICHARD;FARRALL MICHAEL W |
发明人 |
BALDWIN, JR. PHILIP N.;MURRAY NORMAN K.;LEE CHARLES RICHARD;FARRALL MICHAEL W. |
分类号 |
C01F11/00;C01D1/00;C01F7/06;C02F1/52;C02F1/66 |
主分类号 |
C01F11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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