Floc-Flotation of Chalcopyrite from a Low Grade Cu-Zn Ore

Aruna, V A J and Shende, S M (2006) Floc-Flotation of Chalcopyrite from a Low Grade Cu-Zn Ore. In: Proceedings of the International Seminar on Mineral Processing Technology and Indo-Korean Workshop on Resource Recycling (MPT-2006), March 8-10, 2006, NML, Chennai.



A low grade Cu-Zn ore sample assaying 0.2% Cuand 3.6% Zn was sent by MECL for bench scale beneficiation studies to IBM, Ajmer with an objective to evolve a suitable process flow-sheet for the production of marketable grade concen-trates. Preliminary flotation studies with the ore sample indicated that it was possible to generate bulk Cu-Zn concentrate and individual Zn concentrate of marketable grade with reasonably good recovery. However, individual Cu concentrate of marketable grad was not obtained. Hence, floc-flotation technique was adopted on the ore sample to upgrade the Cu concentrate. Several parameters including pH, kerosene addition, choice of suitable frother, parti-cle size, stirring strength have been investigated for their effect on floc flotation. The floc-flotation process yielded a Cu concentrate assaying 26.42% Cu with 67% Cu recovery with wt % yield of 0.5 and 132.35 enrichment ratio. In this process addition of kerosene induces the hydrophobic flocculation which leads to the size enlarge-ment of desired mineral fines through selective aggregat-ion and enhance the flotation of chalcopyrite fine partic-les as flocs. This study demonstrates that flocflotation is a promising means for the recovery of Cu mineral fines from low grade ore sample.

Item Type:Conference or Workshop Item (Paper)
Official URL/DOI:http://eprints.nmlindia.org/6236
Uncontrolled Keywords:Sulphide ores; fine particle processing; flocculation; froth flotation
Divisions:Mineral Processing
ID Code:6236
Deposited By:Sahu A K
Deposited On:03 Dec 2012 18:12
Last Modified:03 Dec 2012 18:12
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