REFINERY FEEDSTOCKS, COKE STRUCTURES AND ALUMINUM CELL ANODES.

Abstract

There are substantial differences in the physical structure of cokes derived from different pertroleum refinery feedstocks. Aromatic charge materials yield anisotropic, needle-type coke, predominantly paraffinic and cycloparaffinic residues give coke with a variety of sponge-like structures, while asphaltic feedstocks usually yield dense, more isotropic cokes. The study has been directed towards the effect of structure and resulting properties of the cokes on aluminum cell anodes prepared from them.