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product- (foundry coke or hard coke)origion- (china)size- (+90 mm)heating value-(+8000 kcal/kg) fixed carbon-(min 90 %)volatile matter-(max 1.5 %)ash-(max 10 %)sulphur-(max 0.8 %) The foundry coke or hard coke is used as a metallurgical fuel in cupola furnace for melting the pig iron in foundries.The foundry coke or hard coke is produced by thecarbonization of coking coal in the ovens. It is the solid carbonaceous carbon residue. foundry coke, hard coke, coal coke foundry coke