Purification of Surface Graphite from Passyala, Sri Lanka
2022-2-8 · each samples were taken into froth flotation. Separated froth was washed to remove the effect of phenol and dried at 60 C for 24 hours. 3g from each graphite sample was take into alkali roasting, mixed with 10,20,30,40,50,60 vol. % NaOH (solid: liquid, 1:2) separately and roasted at 250 C under air for one hour. The roasted
