Gold recovery in fractionating column containing particulate...

Details Gold recovery in fractionating column containing particulate... Gold recovery in fractionating column containing particulate...

C - Chemistry, Metallurgy

25

D

53/234, 204/70

C25D 3/48 (2006.01) B01D 12/00 (2006.01) C22B 11/02 (2006.01) C25C 1/20 (2006.01)

Patent

CA 1214430

ABSTRACT OF THE DISCLOSURE The present invention provides in one aspect a process in which a particulate material containing water and having adsorbed thereon a solubilised gold compound is located in packed form in a fractionating column, a liquid containing a major proportion of water miscible organic liquid is boiled in an evaporator such that it enters the packed fractionating column as a vapour, said water miscible organic liquid being more volatile than water and being preferentially retained in the column. The present invention provides in another aspect a method of recovering gold from an aqueous solution, which comprises placing the gold containing aqueous solution in a cell comprising a gold, silver, aluminium or copper cathode and an inert electrode, subjecting the solution to electrolysis in the cell so as to deposit a gold foil on the cathode.

416557

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