Recovery of selenium

Details Recovery of selenium Recovery of selenium

1972-04-14

1976-11-16

Vertiz, Oscar R.

Chemistry of inorganic compounds

Selenium or tellurium or compound thereof

Elemental selenium or tellurium

75105, C01B 1900

Patent

active

039925110

ABSTRACT:
A process for recovering pure selenium from metal substrates having a selenium coating thereon without impairment of the substrate for reuse which comprises substantially converting the selenium in said coating to a water-soluble selenocyanate by immersing the coated substrate in an aqueous solution of an alkali metal cyanide, removing the substrate from the resultant solution, treating the resultant solution with an acid to precipitate the selenium from the remaining liquid.

REFERENCES:
patent: 1136872 (1915-04-01), Hamilton
patent: 3090671 (1963-05-01), Buchanan
patent: 3180705 (1965-04-01), Freedman
Hamada, "Rate of Solution of Selenium in Sodium Cyanide Solution" Nippon Kagaku Zasshi, vol. 83 (1962) pp. 667-672.

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