C - Chemistry – Metallurgy – 01 – F
Patent
C - Chemistry, Metallurgy
01
F
C01F 7/74 (2006.01) C01F 7/00 (2006.01) C01F 7/56 (2006.01) C02F 1/52 (2006.01)
Patent
CA 2099496
Described is a method of preparing sulphate-containing basic poly(aluminium chloride) solutions. This is done by disinte- grating aluminium-containing salts with hydrochloric acid, filtering off the solid precipitate from the resultant suspension and evaporating down the residue-free solution to crystallize out AlCl3 x 6 H2O. The AlCl3 x 6 H2O obtained is then decomposed by heating at 150 to 200°C to give a solid basic aluminium chloride which is placed in aqueous sulphuric acid and dis- solved to form Al(OH)xCly(SO~)z. Finally, the basic aluminium chloride sulphate solution obtained is warmed for 1 to 3 hours at 40 to 70°C.
Geiler Gunter
Haake Gerhard
Haupt Frank
Freiberger Ne-Metall Gmbh
Metallgesellschaft Aktiengesellschaft
Robic
Sachtleben Chemie Gmbh
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