Effect of Acid Leaching on Recovery of Graphite from Calcareous Deposits

Patnaik, N and Patil, M R and Bhima Rao, R (1997) Effect of Acid Leaching on Recovery of Graphite from Calcareous Deposits. In: UNSPECIFIED.

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Abstract

In this paper an attempt has been made for optimisation of acid leaching of calcite from graphite ore of Tamilnadu. The ore containing 39% acid soluble and 61 % insolubles. The best leaching parameters obtained at particle size below 150 microns are reaction time 20 minutes,temperature 40°C, solid liquid ratio 1:4 and stoichiometric ratio of acid 0.69. Flotation test results on partial leached and on unleached sample indicate that the graphite grade and recoveries are improved from a calcite leached sample. The flotation product obtained from a leached sample contains 73% fixed carbon with 83% recovery.

Item Type:Conference or Workshop Item (UNSPECIFIED)
Uncontrolled Keywords:Calcite; Graphite Ore
Divisions:Mineral Processing
ID Code:2877
Deposited By:Sahu A K
Deposited On:26 May 2011 11:42
Last Modified:13 Jan 2012 12:56
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