Method of recovering magnesia from scrap brick

Details Method of recovering magnesia from scrap brick Method of recovering magnesia from scrap brick

1978-01-09

1979-02-20

Vertiz, O. R.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkaline earth metal

423155, C01F 524

Patent

active

041407458

ABSTRACT:
Magnesia is recovered from scrap lining material rich in magnesia by leach treatment of the material with water in the presence of carbon dioxide under pressure, separating the leaching solution from solid leaching residues, precipitating out magnesium hydrocarbonates from the leaching solution and calcining the precipitate to form magnesia. To make the scrap lining material more readily leachable and enable the production of a rich leaching solution said lining material, prior to the leaching treatment, is treated with steam at a temperature within the range of 100 - 300.degree. C. and corresponding saturation pressures for a period of 1 - 50 hours.

REFERENCES:
patent: 2462277 (1949-02-01), Naugle

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