Method for processing mineral raw material

Details Method for processing mineral raw material Method for processing mineral raw material

C - Chemistry, Metallurgy

22

B

C22B 11/00 (2006.01) C22B 1/04 (2006.01) C22B 3/10 (2006.01)

Patent

CA 2739662

The invention relates to methods of precious metals recovery from raw materials containing chlorides of earth metals, for example slimes. This method consists of the following: the cinder processing is carried out in two steps; at the first step a secondary enrichment by water washing is carried out with the ratio (S:L) = 1:0.7-2.5, then the washed cinder is leached by hydrochloric acid with the ratio (S:L) = 1:2-3.

Linvention concerne des procédés dextraction de métaux précieux de matières premières contenant des chlorures de métaux alcalins, par exemple des boues. Le procédé consiste à traiter les résidus de calcination en deux étapes, la première étape consistant à effectuer un enrichissement secondaire avec une eau de lavage selon une proportion S:L= 1:0,7-2,5, après quoi les résidus de calcination rincés sont lessivés avec de lacide chlorhydrique selon une proportion S:L= 1:2-3.

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