Patent ID: 7987992
Filing Date: 2011-08-02
Classification: B07B,C10B,C25C

Abstract:
1. A process for separating a dense coke fraction from a first particulate coke stream for carbon anode production by providing a first particulate coke stream having a first average density and a first average particle size distribution, the process comprising steps of: feeding the first particulate coke stream to a density separator at an incoming flow rate; stratifying the first particulate coke stream in a density separator into a bed of graded density comprising at least two separate particulate fractions of different average density using an upward flow of gas, the at least two fractions comprising a light coke fraction and the dense coke fraction, wherein the dense coke fraction is found in a layer at the bottom of the graded bed; and separating the light coke fraction in the density separator, the dense coke fraction having an average density which is greater than the first average density and an average particle size distribution substantially equivalent to the first average particle size distribution, wherein the dense coke fraction is discharged from an upper end of an inclined oscillating table of the density separator.