Beneficiation of low grade graphite ore from Multai area, Betul district, M.P.

Didolkar, V K and Kumar, V A and Pathak, S U and Tupkary, R H (1997) Beneficiation of low grade graphite ore from Multai area, Betul district, M.P. In: UNSPECIFIED.

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Abstract

The low grade graphite ore sample from Multai area, Betul District, M.P analysed 10% graphite and wasfound to be crvptocrystalline in nature and intimately associated with silicate gangue. Conventional mechanical cell flotation trials were conducted and various process variables such as froth erlcollector/depressant concentrations, pH of the pulp etc., were optimised. The best grade concentrate containing 60.1% F.C. was obtained after cleaning the rougher concentrate twice, with a recovery of 72.12%. Further improvement in the grade was possible by only resorting to the bulk oil flotation of the finely ground sample (less than 37 microns). The best grade containing 72.5% F.C. was obtained by bulk oil flotation of the rougher concentrate containing 53.7% F.C., with an overall graphite recovery of 74.6%. The column flotation trials studying process variables such as pulp density,depressant concentration and airflow rates, yielded the best grade of column concentrate containing 64% F.C. with a recovery of90.88%. Afteranalysing the results obtained by various techniques critically, the bulk oil flotation of the rougher cell concentrate, was found to be the most suitable technique.

Item Type:Conference or Workshop Item (UNSPECIFIED)
Uncontrolled Keywords:Silicate gangue; Cryptocrystalline
Divisions:Mineral Processing
ID Code:2876
Deposited By:Sahu A K
Deposited On:26 May 2011 11:42
Last Modified:13 Jan 2012 11:42
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