Method of recovering metals out of soot originating from the...

Details Method of recovering metals out of soot originating from the... Method of recovering metals out of soot originating from the...

C - Chemistry, Metallurgy

22

B

53/342

C22B 7/00 (2006.01) C01G 31/00 (2006.01) C22B 3/38 (2006.01) C22B 7/02 (2006.01) C22B 34/22 (2006.01)

Patent

CA 1091040

METHOD OF RECOVERING METALS OUT OF SOOT ORIGINATING FROM THE COMBUSTION OF OIL Abstract Soot produced in the combustion of fuel oil contains valuable metals, such as vanadium and nickel. The soot can be disposed of, and the valuable metals can be recovered, by leaching the soot with an aqueous solution of sulphuric acid, to extract part of the metal content from the soot, combusting the soot thus leached, and leaching the combustion residue with an aqueous solution of sulphuric acid, to extract an additional part of the metal content. The solution produced in this second leaching process is preferably returned to the leaching of the soot. Metals can be recovered in a way known per se from the solution produced in the leaching of the soot.

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