Abstract
In order to improve the gas permeability of formcoke as with a chamber oven coke, an examination was made about the betterment of the shape of formcoke.
The result has revealed that by employing a concave shape having a U-shaped permeation groove on the surface and making the shape larger, the gas permeabilith and voidity in case of filling can be improved as with the chamber oven coke.
In addition, it has been made clear that the internal thermal stress responsible for the fissuring of the new shape formcoke can be reduced below that of the conventional formcoke.
