Apparatus and process for purifying highly impure calcium hydrox

Details Apparatus and process for purifying highly impure calcium hydrox Apparatus and process for purifying highly impure calcium hydrox

1998-12-04

1999-12-07

Langel, Wayne

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423432, 423490, 4236585, 562597, C01F 1100, C01F 1118, C01B 2532, C07C 5506

Patent

active

059978333

ABSTRACT:
A solution process for the purification of calcium hydroxide, particularly from hydrated carbide lime, which is subsequently used as a feed stock for a high-value calcium product, preferably calcium carbonate. Precipitated calcium carbonate is formed by reaction of the purified calcium hydroxide solution with carbon dioxide in a plug-flow reaction system.

REFERENCES:
patent: 4888160 (1989-12-01), Kosin et al.
patent: 5792440 (1998-08-01), Huege

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