Patnaik, N and Patil, M R and Bhima Rao, R (1997) Effect of Acid Leaching on Recovery of Graphite from Calcareous Deposits. In: UNSPECIFIED.
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|
|Deposited By:||Sahu A K|
|Deposited On:||26 May 2011 11:42|
|Last Modified:||13 Jan 2012 12:56|
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