Recovery of rhenium

Details Recovery of rhenium Recovery of rhenium

1973-12-06

1976-01-13

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group viib metal

423 54, 423139, 75101BE, 252413, 252414, C01G 4700

Patent

active

039325792

ABSTRACT:
Rhenium is recovered in a substantially pure form from a hydrochloric acid solution thereof contaminated with molybdenum and iron by adding sulfuric acid to establish a sulfate/chloride anion ratio of at least 20:1 and mixing the solution with a liquid trialkyl phosphate to extract rhenium in the phosphate phase. The trialkyl phosphate phase is seaprated and washed with sulfuric acid to remove any residual iron and molybdenum and thereafter with hydrochloric acid to remove entrained sulfuric acid. Rhenium is recovered by back extracting with nitric acid.

REFERENCES:
patent: 3458277 (1969-07-01), Platzke et al.
patent: 3578395 (1971-05-01), Kluksdahl et al.
patent: 3672874 (1972-06-01), Wiley
patent: 3681016 (1972-08-01), Litz
patent: 3855385 (1974-12-01), Derosset et al.
Kertes et al., "Journal of Chemical Soc.," Vol. 5, 1961, pp. 1921-1925.

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