1.calcined petroleum coke steelmaking carbon additive 2.graphitized petroleum coke cast iron and alloy 3.Tel:86-13783524876 graphitized petroleum coke The High purity graphitized petroleum coke is made from high quality petroleum coke under a temperature of 2,500-3,500°C. As a high purity carbon material, it has characteristics of high fixed carbon content, low sulfur, low ash, low porosity etc. ...