发明名称 |
METHOD FOR PURIFYING SODIUM ALUMINATE LIQUORS CONTAINING SODIUM OXALATE AND ENHANCING RESIDUES |
摘要 |
A method for eliminating sodium oxalate from at least one fraction (L4) of decomposed Bayer aluminate liquor (L2) obtained after concentration (V) in a Bayer alumina production cycle, comprising the precipitation of said oxalate which is dissolved by means of a finely divided lime-based (C1) destabilizing agent followed by separation (F) of the solid residues from the deoxalation (S4) of the liquor (L6) which is recycled as an alkaline leaching liquor for bauxite whereby desolation residues (S4) are used to decarbonate and deoxalate industrial water.The method is particularly advantageous when said industrial water is raw water or water from a Bayer plant and said water is redirected towards the washing cycle for insoluble residues from the Bayer cycle once treatment has occurred.
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申请公布号 |
WO0075073(A1) |
申请公布日期 |
2000.12.14 |
申请号 |
WO2000FR01451 |
申请日期 |
2000.05.29 |
申请人 |
ALUMINIUM PECHINEY;CLERIN, PHILIPPE;CRISTOL, BENOIT |
发明人 |
CLERIN, PHILIPPE;CRISTOL, BENOIT |
分类号 |
C01F7/06;C01F7/47;(IPC1-7):C01F7/06;C02F5/02 |
主分类号 |
C01F7/06 |
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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