Chemistry: physical processes – Physical processes – Crystallization
Patent
1996-07-31
1998-02-10
Straub, Gary P.
Chemistry: physical processes
Physical processes
Crystallization
23295R, 23302R, 23302T, 23304, C01D 130, C01D 724, B01D 900
Patent
active
057164193
ABSTRACT:
Mineral salts, e.g., potassium chloride, are crystallized from aqueous solutions thereof in the presence of a crystal growth promoting amount of lecithin or lecithin containing compositions. Mineral salts include alkali metal and alkaline-earth metal chloride, sulfate, carbonate, phosphate and nitrate salts. The process is described as providing increased amounts of large crystals and a narrower and more uniform crystal size distribution.
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Mallak Frank P.
PPG Industries Inc.
Stein Irwin M.
Straub Gary P.
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