Process for calcium fluoride production from industrial waste wa

Details Process for calcium fluoride production from industrial waste wa Process for calcium fluoride production from industrial waste wa

1982-08-09

1983-11-08

Meros, Edward J.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkaline earth metal

423490, C02B 120

Patent

active

044141858

ABSTRACT:
A process for the preparation of calcium fluoride from industrial waste waters which comprises treatment of the waste waters with potassium hydroxide, followed by lime precipitation, neutralization with carbon dioxide and filtration to provide the calcium fluoride product.

REFERENCES:
patent: 3443890 (1969-05-01), Sisson et al.
patent: 3527702 (1970-09-01), Holluta et al.
patent: 3627480 (1971-12-01), Birchall
patent: 4226710 (1980-10-01), Bruckenstein
Kirk-Othmer, Encyclopedia of Chemical Technology, Second Edition, vol. 4, Interscience Publishers, (1964), pp. 368, 369.

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