FIELD: chemistry.
SUBSTANCE: invention relates to the chemical industry and non-ferrous metallurgy, in particular to the production of a coagulant based on aluminum polyoxychloride, used in the purification of drinking and waste water. Aluminum polyoxychloride is obtained from bauxite in 2 stages. First stage is deferrization of bauxite with hydrochloric acid at a concentration of 105 g/l at a ratio of T:F=1:10 for 15–60 minutes in the temperature range 80–103 °C. Solution is then filtered and bauxite is sent to autoclave leaching with hydrochloric acid at a concentration of 350 g/l at a ratio of T:F=1:5 for 4 hours and a temperature of 185 °C.
EFFECT: invention makes it possible to reduce the iron impurity content in the coagulant and improve the consumer qualities of the product.
1 cl, 3 tbl
| Title | Year | Author | Number |
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| METHOD FOR PRODUCING ALUMINIUM HYDROXOCHLORIDE FROM BOEHMITE-KAOLINITE BAUXITES AND HYDROCHLORIC ACID | 2014 |
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SU954372A1 |
| METHOD OF PRODUCTION OF ALUMO-IRON COAGULANT | 2004 |
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| METHOD OF EXTRACTION OF SCANDIUM IN PROCESSING BAUXITES FOR ALUMINA | 2001 |
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| PROCESSING METHOD OF BLACK-SHALE ORES WITH RARE METALS EXTRACTING | 2011 |
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RU2493272C2 |
| METHOD OF PROCESSING HIGH-SILICON IRON-CONTAINING BAUXITES | 0 |
|
SU1426449A3 |
