Development of Flotation Process for Enrichment of Ganesh-Himal Lead-zinc Sulphide Ore from Nepal
The present paper deals with the development of flotation based process for enrichment of a lead-zinc sulphide ore from Ganesh-Himal region of Nepal.Detailed characterisation and flotation studies were carried out under varying process conditions.The sample assayed 2.47% Pb with 13.6% Zn.The ore was predominantly made up of spahlerite and pyrite in association with subordinate amounts of galena,minor amounts of pyrrhotite and chalcopyrite.Dolomite was the main gangue.The modal analysis showed the probability of fair liberation of sulphides from gangues around 210 microns but the locking of galena with sphalerite and other sulphides continued to finer sizes.Under the optimum process conditions the rougher lead and zinc recoveries were 96.3% and 90% respectively.Multistage cleanings of rougher products proved helpful in improving the concentrate grade,meeting the required specification.Based on the studies undertake a process flow-sheet for the concentration of the ore to individual lead and zinc concentrates was developed.
Froth flotation Lead-zinc ore Characterisation Effects of process parameters Process flow-sheet
R.Singh D.S.Rao B.Banerjee K.K.Bhattacharyya
Mineral Processing Division,National Metallurgical Laboratory,Jamshedpur,India
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
4199-4204
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）