MySx/ZSH mixture as sulfidizing agent
AssigneeNouryon Chemicals International B.V.
InventorsMatthias Folchnandt, Olaf Klobes, Ulises Picardi, Rodrigo M. Giménez, Leandro Prats
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Abstract
The disclosure is directed to a sulfidizing agent obtainable by mixing MySx and ZSH in a weight ratio of from about 90:10 to about 10:90, wherein M is chosen from Li+, Na+, K+, Rb+, Cs+, NH4+, Mg2+ and Ca2+, y is about 1 or about 2, x is from about 1.1 to about 5, and Z is independently chosen from Li+, Na+, K+, Rb+, Cs+ and NH4+, and a process for using the sulfidizing agent in the recovery of one or more metal ores and/or polymetallic minerals from gangue.
Claims18
A process for recovering one or more metal ores and/or polymetallic minerals from gangue, said process comprising:
- (i) treating the one or more metal ores and/or polymetallic minerals with a sulfidizing agent;
- and
- (ii) separating the treated metal ores and/or polymetallic minerals using a sulfide floatation process;
- wherein the sulfidizing agent is obtained by mixing MySx and ZSH in a weight ratio of from about 90:10 to about 10:90, wherein M is chosen from Li+, Na+, K+, Rb+, Cs+, NH4+, Mg2+ and Ca2+, y is about 1 or about 2, x is from about 2.1 to about 5, and Z is independently chosen from Li+, Na+, K+, Rb+, Cs+ and NH4+;
- wherein the treatment in (i) is performed by adding a first portion of sulfidizing agent to the one or more metal ores and/or polymetallic minerals in a rougher floatation stage of the sulfide floatation process and adding a further portion of sulfidizing agent to the one of metal ores and/or polymetallic minerals in at least one cleaning stage of the sulfide floatation process;
- and
- wherein the sulfidizing agent is added to the rougher floatation stage in an amount of from about 10 to about 70 g/ton and to the at least one cleaning stage in an amount of from about 3 to about 15 g/ton, based on a dose of grams of agent per ton of dry ore/dry mineral.
Dependencies are inferred from the claim text.