Separation of polymetallic sulphides by froth flotation

Details Separation of polymetallic sulphides by froth flotation Separation of polymetallic sulphides by froth flotation

1988-05-11

1989-11-14

Schor, Kenneth M.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

252 61, 241 20, B03D 102

Patent

active

048805297

ABSTRACT:
A new depressant composition is provided for the enhanced separation into separate value metal concentrates of copper, nickel, zinc, lead present in polymetallic and massive sulphide ores.
The depressant is added in an aqueous solution prepared by dissolving first a mixture of quebracho and dextrin, or quebracho and guar gum. To the solution of modified quebracho a water soluble salt of lignin sulphonate is added. The aqueous polymer of modified quebracho lighin sulphonate is further mixed with one or more of the following inorganic reagents: water soluble cyanide, metal sulphates and water soluble sulphites. The resulting depressant is added together with conventional flotation reagents in conventional mineral separation stages as required.

REFERENCES:
patent: 1741028 (1929-12-01), Koenig
patent: 2019306 (1935-10-01), Handy
patent: 2070076 (1937-02-01), Brown
patent: 2471384 (1949-05-01), Booth
patent: 2919802 (1960-01-01), Drake
patent: 3912623 (1975-10-01), Buza
patent: 4246096 (1981-01-01), Bulatovic
patent: 4702824 (1987-10-01), Abadi

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