Designing Flotation Process for Lead-Zinc ore from Nepal

Singh, Ratnakar and Sengupta, S K and Pathak, P N and Prasad, S N and Srivastava, J P and Banerjee, B and Chattpadhyay, A and Rao, D S and Maulik, S C and Chakrabarti, C K (2000) Designing Flotation Process for Lead-Zinc ore from Nepal. In: International Symposium on Processing of fines. NML Jamshedpur, Jamshedpur, pp. 188-198. ISBN 81-87053-53-4



The paper deals with the development of a process based on froth flotation for the concentration of a lead-zinc ore from Ganesh-Himal region of Nepal. A detailed chara-cterisation and flotation studies were carried out under the varying process conditions. The ore was predomionantly made up of sphalerite and pyrite in association with sub-ordinate amount of galena, minor amount of pyrrhotite and chalcopyrite with dolomite as the major gangue. Under the optimum process conditions the rougher lead and zinc recovery were 96.3% and 90.8% respectively. Regrinding followed by three stage cleaning of the lead rougher conc-entrate resulted in cleaner concentrate assaying 79.11 % Pb with 83.4% recovery. Similarly two stage cleaning of the zinc rougher concentrate produced cleaner concentrate analysing 60.08% Zn with 80.4% recovery. Based on the studies undertaken a process flow-sheet for the conc-entration of the ore to individual lead and zinc concen-trates has been recommended.

Item Type:Book or NML Publication
Uncontrolled Keywords:Froth flotation, Lead-zinc ore, Process flow-sheet, Characterisation
Divisions:Mineral Processing
ID Code:2911
Deposited By:Sahu A K
Deposited On:01 Jun 2011 10:33
Last Modified:11 Sep 2013 12:31
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