Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1974-12-19
1976-09-07
Andrews, R. L.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
204107, 204108, 204109, 204111, 204113, 204117, 204118, 204128, 75101R, 75117, 75118R, 75119, 75120, 75121, 423 22, 423 32, 423 35, 423 42, 423104, 423109, 423140, 423511, C25C 112, C25C 108, C25C 116, C25C 120
Patent
active
039792650
ABSTRACT:
Sulfur monochloride is reacted with an ore containing iron, sulfur and a metal which forms a water soluble ammine complex or an ammonium-containing double salt, to yield metal chlorides and sulfur. The metal sought is solubilized with an aqueous solution containing ammonium ions to produce an aqueous solution of metal ammine complex or double salt and thereby separate such complex or salt from the iron and sulfur. The solution containing the sought metal values can then be subjected to electrowinning to recover the metal, or the metal can be precipitated as the metal oxide by the addition of sodium hydroxide. Sulfur and chlorine are recovered during the process and used to regenerate sulfur monochloride.
REFERENCES:
patent: 3673061 (1972-06-01), Kruesi
patent: 3736238 (1973-05-01), Kruesi et al.
"Chlorination of Sulfide Ores with Chlorine in a Medium Containing Liquid Chlorine," by N. S. Fortunatov et al., Ukrainskii Khimicheskii Zhurnal, Apr. 1966, 32, 406-411.
Andrews R. L.
Collins Richard W.
Continental Oil Company
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