PROCEDE POUR LA REDUCTION ET LE REMPLACEMENT DES PERTES DE HYDROXYDE DE SODIUM, A LA PREPARATION DE L'ALUMINE PAR PROCEDE BAYER
1436261 Reducing NaOH loss in Bayer process ALUTERY ALUMIMUMIPARI TERVEZO VALLALAT and FEMIPARI KUTATO INTEZET 18 May 1973 23900/73 Heading C1A A method of reducing the loss of NaOH during alumina production according to the Bayer process wherein NaCl is added to the digestion liquor such that a con...
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Main Authors | , , , , , |
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Format | Patent |
Language | French Romanian |
Published |
17.08.1981
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Subjects | |
Online Access | Get full text |
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Summary: | 1436261 Reducing NaOH loss in Bayer process ALUTERY ALUMIMUMIPARI TERVEZO VALLALAT and FEMIPARI KUTATO INTEZET 18 May 1973 23900/73 Heading C1A A method of reducing the loss of NaOH during alumina production according to the Bayer process wherein NaCl is added to the digestion liquor such that a concentration of 1-40 g./l., preferably 5-20 g./l. is maintained therein. The addition of NaCl is preferably continuous NaCl may also be added to recycling digestion liquor after addition of NaOH to bring NaOH concentration to 250-500 g./l. to NaCl concentration of 20-80 g./l. to salt out Na 2 .CO 3 . |
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Bibliography: | Application Number: RO19720073348 |