Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group iiia metal or beryllium
Patent
1982-05-19
1984-09-18
Gantz, Delbert E.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group iiia metal or beryllium
423126, 423132, 423481, 23296, C01F 100, C01F 756, C01F 762, C22B 2100
Patent
active
044723610
ABSTRACT:
A starting solid mixture of AlCl.sub.3 and Nacl, which may have been obtained by acid leaching of an aluminiferous mineral and precipitation of the AlCl.sub.3 and NaCl, is mixed with water in an amount to form an aqueous solution containing NaCl and AlCl.sub.3 in a weight ratio Na.sub.2 O/Al.sub.2 O.sub.3 of about 0.028. This is sparged with HCl to precipitate AlCl.sub.3, but the sparging is stopped before a substantial concentration of NaCl starts to come out of solution. The precipitated AlCl.sub.3 may be calcined to Al.sub.2 O.sub.3 and washed to remove any residual NaCl.
REFERENCES:
patent: 4158042 (1979-06-01), Deutschman
Deutschman John E.
Tahiani Francoise
Alcan International Limited
Gantz Delbert E.
Pak Chung K.
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