By Lorentz Petter Lossius, Keith Neyrey, and Les Edwards.
The sulfur level of high sulfur cokes used by the calcining
industry for blending is increasing. During calcination, petroleum
coke desulfurizes and the rate of sulfur loss is dependent on both
the sulfur level and final temperature. Desulfurization negatively
affects coke properties such as real density and porosity and
additional desulfurization during anode baking can negatively
affect anode properties. This paper is a follow-up to a 2007 TMS
paper on desulfurization and presents the results of additional
studies on anode and coke desulfurization versus equivalent
baking level and discusses the effect of the level of calcination of
high sulfur cokes on anode reactivity. The results indicate that the
coke calcination levels must be set with coke sulfur levels in
mind. It also shows that blending with high sulfur cokes need not
be detrimental to anode properties.
To inquire about this paper, please contact Marvin Lubin, Manager of Customer Support.