PROCESS FOR DESILICATION OF ALUMINATE SOLUTION

The present invention provides a process for desilication of aluminate solutions which comprises treatment of the aluminate solution first with a calsium-contain-ing reagent "a" which is a product of the reaction of desilication of the aluminate solution; reagent "a" contains mai...

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Main Authors ALEXEEV, ALEXEI I, MIRONOV, EVGENY I, ZHUKOV, ALEXANDR G, ZATULOVSKY, ISAAK A, SIZYAKOV, VIKTOR M, KALUZHSKY, NIKOLAI A, ISAKOV, EVGENY A, AFANASIEV, VALENTIN N, OSTROVLYANCHIK, EVGENIA S, ALEXANDROVA, ZARYA N, VYSOTSKAYA, GALINA M, CHERNOV, VINETSY I, KOSTIN, IVAN M, VLADIMIROV, PAVEL S, FINKELSHTEIN, LEONID I., (DECEASED), BADALIANTS, KHOREN A, KUTSENKO, VIKTOR S
Format Patent
LanguageEnglish
French
Published 26.11.1985
Edition4
Subjects
CHEMISTRY
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
INORGANIC CHEMISTRY
METALLURGY
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Summary:The present invention provides a process for desilication of aluminate solutions which comprises treatment of the aluminate solution first with a calsium-contain-ing reagent "a" which is a product of the reaction of desilication of the aluminate solution; reagent "a" contains mainly calcium hydrogarnet of the formula: 3CaO.A12O3.nSiO2(6-2n)H2O wherein n A? 1, and then with a reagent "b" of the formula: 4CaO.A12O3(0.1-0.6)X.mH2O wherein X is CO2 and/or SO3; m = 8 to 15. The treatment of the aluminate solution with reagent "a" is carried out for 0.5 to 2 hours at a temperature ranging from 40 to 105.degree.C. Weight ratio of reagents "a" and "b" is maintained within the range of from 1:1 to 3:1. The process according to the present invention is useful in the manufacture of alumina.
Bibliography:Application Number: CA19830420184