shot coke

Due to mechanisms not well understood, the coke from some crudes forms into small, tight, non attached clusters that look like pellets, marbles or BB’s. It usually is a very hard coke , i.e., low HGI. Such coke is less desirable to the end users because of difficulties in handling and grinding. It is also less desirable for calcineable coke because the shot tends to “pop” in the kiln reducing the thermal stability.