Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Alkaline earth metal
Patent
1989-01-23
1990-06-19
Hruskoci, Peter
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Alkaline earth metal
106786, 106775, 210751, 423172, 423485, 423555, C01F 1146, C04B 106
Patent
active
049352113
ABSTRACT:
A process, and the product produced thereby, for the preparation of a waste solidification material from hardened fluorogypsum as a by-product of the manufacture of hydrofluoric acid by reacting fluorospar with sulfuric acid, removing hydrogen fluoride from the reaction product, slurrying the by-product with water, placing the slurried by-product fluorogypsum in settlement ponds until the fluorogypsum hardens, the hardened fluorogypsum having a pH of about 3 to about 5, including heating the hardened fluorogypsum to evaporate substantially all water physically mixed with the fluorogypsum and further heating the fluorogypsum to reduce the water chemically bound to calcium sulfate in the fluorogypsum to from about 0.5% to about 9% by weight.
REFERENCES:
patent: 1471201 (1923-10-01), Fruterman
patent: 3300279 (1967-01-01), Parisot
patent: 3720609 (1973-03-01), Smith
patent: 3732697 (1973-05-01), Dickson
patent: 3855391 (1974-12-01), Selmeczi et al.
patent: 3947284 (1976-03-01), Kitsugi
patent: 4016240 (1977-04-01), Hinsche et al.
patent: 4028130 (1977-06-01), Webster
patent: 4080422 (1978-03-01), McCleary
patent: 4124405 (1978-11-01), Quienot
patent: 4149968 (1979-04-01), Kupier
patent: 4229295 (1980-10-01), Krofchak
patent: 4402922 (1983-09-01), Gaynor et al.
patent: 4436645 (1984-03-01), Ceaser
patent: 4457781 (1984-07-01), Palmer
patent: 4460551 (1984-07-01), Boese et al.
patent: 4465518 (1984-08-01), Miyoski
patent: 4491571 (1985-01-01), Suzuki et al.
patent: 4517095 (1985-05-01), Ceaser
patent: 4523906 (1985-06-01), Petrovic
patent: 4615809 (1986-10-01), King
patent: 4623469 (1986-11-01), Conner
PCT Application, Publication No. WO83/02266, Application No. PCT/US82/01776, Bruce et al., 7-1983.
Drodge Joseph
Hruskoci Peter
Ray David L.
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