Foundry coke, also known as hard coal coke, is produced in non-recovery coke ovens. It is used for melting iron and other metals such as lead, copper, tin, and zinc in a cupola furnace at foundries. It has denser structure, high carbon, low ash, and high heating value. The size of the foundry coke is larger than metallurgical coke. The size specification depends on the size of the cupola furnace. Foundry coke is used as a supporting matrix, reducing agent, and energy carrier during the pig iron manufacturing process. The use of large sized coke offers advantages of lower blasting pressure, increased metal temperature, reduced breakage from handling, and reduced reaction with CO2.