Characterisation and Liberation of Graphite Schist

Abstract

This paper deals with the characterisation and liberation studies of graphite schist from Shivaganga, Tamilnadu. The graphite flakes are interbanded with quartz and calcite. Secondary calcite veins often traverses graphite flakes and quartz grains. Based on grain counting, frequency curves , comminution followed by flotation tests , the liberation size of graphite is estimated between 150to 90 microns. Therougher concentrate achieved at d&, passing of 145 micron size product contain 35 % FC with 99% recovery.The SFM study reveals the presence of minute inclusions of calcite and quartz within graphite flakes.