METHOD OF PREPARING ALUMOAMMONIUM ALUM

METHOD OF PREPARING ALUMOAMMONIUM ALUM

FIELD: chemical industry. SUBSTANCE: method comprises decomposing aqueous suspension of aluminium hydroxide with sulfuric acid to produce aluminium sulfate melt, dissolving it with water to give aluminium sulfate solution at Al2O3:SO3 molar ratio of 1: (3.16-3.42 with concentration of 20- 25%. Aqueo...

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Hauptverfasser: DAVYDOV N.A, IL'IN A.N, FOMIN V.K, UKLONSKIJ I.P, DENISENKOV V.F
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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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creator DAVYDOV N.A
IL'IN A.N
FOMIN V.K
UKLONSKIJ I.P
DENISENKOV V.F
description FIELD: chemical industry. SUBSTANCE: method comprises decomposing aqueous suspension of aluminium hydroxide with sulfuric acid to produce aluminium sulfate melt, dissolving it with water to give aluminium sulfate solution at Al2O3:SO3 molar ratio of 1: (3.16-3.42 with concentration of 20- 25%. Aqueous ammonium sulfate solution with concentration of about 35% is prepared, aluminium sulfate and ammonium sulfate solution are mixed, and mixture is cooled. Precipitated crystals of alumoammonium alum are separated by filtration or centrifugation without washing and drying operations. EFFECT: higher yield and improved property of alumoammonium alum.
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SUBSTANCE: method comprises decomposing aqueous suspension of aluminium hydroxide with sulfuric acid to produce aluminium sulfate melt, dissolving it with water to give aluminium sulfate solution at Al2O3:SO3 molar ratio of 1: (3.16-3.42 with concentration of 20- 25%. Aqueous ammonium sulfate solution with concentration of about 35% is prepared, aluminium sulfate and ammonium sulfate solution are mixed, and mixture is cooled. Precipitated crystals of alumoammonium alum are separated by filtration or centrifugation without washing and drying operations. 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subjects CHEMISTRY
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
INORGANIC CHEMISTRY
METALLURGY
title METHOD OF PREPARING ALUMOAMMONIUM ALUM
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