Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1975-08-05
1977-02-15
Spear, Jr., Frank A.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210 51, 210 53, 210 56, 204149, 134 13, C02B 120
Patent
active
040081621
ABSTRACT:
A two-step process for the waste treatment of fluoroborate solutions which involves hydrolysis at an acidic pH in the presence of calcium ions to liberate fluoride and subsequent removal of fluoride values, e.g. by precipitation as calcium fluoride under alkaline conditions.
REFERENCES:
patent: 3284350 (1966-11-01), Williamson
patent: 3800024 (1974-03-01), Forsell et al.
patent: 3933605 (1976-01-01), Butler et al.
patent: 3959132 (1976-05-01), Singh
Chem. Abst., vol. 84:80346q, "Kinetics and Mechanism of Hydrolysis Reactions of Some Fluorine Acid Complexes in the Presence of Polarizing Cations," (1975).
Korenowski Theodore Frank
Penland Jerry Lee
Ritzert Chalmer John
Brennan Bryant W.
Castel Benoit
Dart Industries Inc.
LeMaire Margareta
Spear, Jr. Frank A.
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