Method for ION exchange based leaching of the carbonates of calc

Details Method for ION exchange based leaching of the carbonates of calc Method for ION exchange based leaching of the carbonates of calc

1994-09-15

1996-03-19

Bos, Steven

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkaline earth metal

4231572, C22B 2600, C22B 2620

Patent

active

055001939

ABSTRACT:
This invention relates to the extraction of carbonates of magnesium and/or calcium with a strong hydrogen form cation-exchange resin from a phosphate rock composition in an aqueous slurry, wherein the phosphate rock and the resins have been classified to different non-overlapping particle sizes and separating the slurry into the leached composition and the loaded ion exchange resin; and recovering the calcium and magnesium, and regenerating the ion exchange resin for further use in the process.

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patent: 4723998 (1988-02-01), O'Neil
patent: 4793979 (1988-12-01), Wenxing
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patent: 4894168 (1990-01-01), Holl et al.
patent: 4981598 (1991-01-01), Komadina
patent: 5021216 (1991-06-01), Whitney et al.

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