Method for working-up shale

Details Method for working-up shale Method for working-up shale

C - Chemistry, Metallurgy

01

B

23/330, 53/372

C01B 17/06 (2006.01) C01B 17/76 (2006.01) C22B 1/00 (2006.01) C22B 3/08 (2006.01) C22B 9/00 (2006.01) C22B 21/00 (2006.01) C22B 26/00 (2006.01) C22B 34/22 (2006.01) C22B 34/34 (2006.01) C22B 60/02 (2006.01)

Patent

CA 1063776

A B S T R A C T O F T H E D I S C L O S U R E The invention is a method for working-up shale whilst recovering metals therefrom and the sulphur content thereof. The method comprises crushing the shale and leaching and roasting the shale. The sulphur content is oxidized and con- verted into sulphuric acid, concentrated sulphur dioxide or sulphur. The leaching operation is effected with sulphuric acid. The leached metals are recovered in a manner known per se and the residual solution is passed to the roasting stage.

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