Process for the preparation of pure aluminum chloride hexahydrat

Details Process for the preparation of pure aluminum chloride hexahydrat Process for the preparation of pure aluminum chloride hexahydrat

1979-07-30

1981-04-28

Bernstein, Hiram

Chemistry: physical processes

Physical processes

Crystallization

B01D 902

Patent

active

042643325

ABSTRACT:
A process for the preparation of pure aluminum chloride hexa hydrate is disclosed, in which the crystallisate mixture from the mother solution (centrifugate) and starting solution (wash solution) is treated first to the coldest of a number of crystallization steps, pumped to the hottest step by retrograde feeding, and in which only from the hottest step is a portion of the mother solution now rich in impurities removed.

REFERENCES:
patent: 3285025 (1966-11-01), Shawl
patent: 3406010 (1968-10-01), Holderreed et al.
patent: 3446578 (1969-05-01), Sullivan

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