The technology of column flotation is a new mineral beneficiation method developed on strong scientific principles for processing of fine low grade ores and minerals. Improved metallurgical performance is due to: (i) less entrainment and entrapment, (ii) Independent control of operating variables, (iii) Froth washing provision and (iv) Control over bubble size - effective in fines collection.The technique undertakes through reduced operating capital costs as a result of: (a) No moving parts Lower energy consumption, (b) Lower reagent consumption, (c) Substantial reduction in floor area - vertical configuration and (d) One stage of column flotation generally replaces multi stage conventional flotation. The technology finds its application in floatation of base metal ores (Cu, Pb, Zn ores), iron ores (hematite, magnetite, BHQ,etc), beach sand minerals (Sillimanite), industrial minerals (limestone, barite,etc) and graphite and coal fines.
National Metallurgical Laboratory (NML)
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