Nickel Ore - Pentlandite, Nickel Sulphide Mineral Blend, Strong Flotation Collectors And Depression Of Talc

we are the popular exporter, importer and supplier of Nickel Ore in Greater Noida, Uttar Pradesh, India. Pentlandite ((Ni,Fe)S) is the most important nickel sulphide mineral and is often associated with nickel-containing pyrrhotite and chalcopyrite. Gangue minerals can include talc and other troublesome silicates which must be dispersed and/or depressed. Nickel is a malleable ductile silvery-white metallic element that is strong and corrosion-resistant, occurring principally in pentlandite and niccolite.

Recovery and separation entails floating all three sulphide minerals into a bulk flotation concentrate at natural pH or at elevated pH using soda ash. Strong flotation collectors are used, e.g. amyl xanthate and combination of dithiophosphates/mercaptobenzothiazole and xanthate, with or without prior activation of pyrrhotite with copper sulphate. Soda ash disperses talc and can provide gangue depression. Often CMC is used to depress talc.

In instances where the pyrrhotite is barren of metal values, copper sulphate is not needed and a more selective collector, such as a dithiophosphate, should be used with a small amount of xanthate as a secondary collector.

Some plants use bulk flotation in an acid pH environment which is achieved using SO2 or H2SO4.