Removal of sulphur from graphite powder

Abstract

Graphite is crystalline carbon identical in composition with charcol and diamond. There are three principle types of graphite viz. Vein, Flake and Amorphous. Sri Lankan graphite falls into the vein graphite category, which can be further subdivided into crystalline and amorphous forms. Graphite occurs in narrow, long and often irregular veins, general attitude conforms to the major rupture direction of rocks in the vicinity, but deviations are possible in both strike and dip. Graphite veins are extremely pure with relatively little Gangue is mainly lenses of wall rock or quartz. Occasionaly calcite, pyrite and chalcopyrite occur in small quantities.