Process for the treatment of alkaline liquors containing sulfate

Details Process for the treatment of alkaline liquors containing sulfate Process for the treatment of alkaline liquors containing sulfate

1978-02-08

1982-03-23

Miller, Edward A.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Radioactive metal

423 15, 423 17, 423181, 423555, C01G 4300, C01F 1146, C01D 700

Patent

active

043212352

ABSTRACT:
Alkaline solutions containing sulfate and sodium ions such as uranium leach liquors, are treated with cationic ion exchange resins in the ammonium form to form a solution containing soluble ammonium salts and complexes; the solution is further treated to convert the soluble sulfates into insoluble sulfates and, in the case of uranium, further treating to separate the uranium by heat and/or acidification. The ammonium can be recovered and reused as ammonium carbonate to regenerate the ion exchange resin whereby sodium ions are eluted from the resin in the form of sodium carbonate which is converted to sodium hydroxide and re-cycled for use as leaching solution.

REFERENCES:
patent: 2656245 (1953-10-01), Gray et al.
patent: 2863717 (1958-12-01), Kunin
patent: 2900227 (1959-08-01), Dancy et al.
patent: 2982605 (1961-05-01), Mouret et al.
patent: 3000696 (1961-09-01), Teichmann
patent: 3378336 (1968-04-01), George et al.
patent: 3445201 (1969-05-01), Wheelwright
patent: 3497314 (1970-02-01), Thomas
patent: 3961027 (1976-06-01), Crossley

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