Abstract
Based on the fundamental understanding of the carbonization mechanism, some ideas for the development of anisotropic flow texture in the produced coke were reviewed. The co-carbonization process may be the most useful one which can develop the optical texture in any form from any carbonizing material, in principle, by means of suitable additive. In the best process, no modification of external conditions for the carbonization is requested to obtain a coke of best quality such as a prime needle coke. The compatibility of the co-carbonizing substances is introduced to explain and describe cather quantitatively the effect of co-carbonization. The efficiency of an additive is discussed from the view of its chemical structure and reactivity.
