In the rotary klin calcining petroleum coke, the petroleum coke is calcined in a natural way, and the temperature is at about 1350.The lining material hall be of good thermal shock resistance, small changes in the lining line and excellent abrasion excellence. The castable produced by our company adopts dense brown corudum and mullite as the aggregate and fine powder, mixed with 97 sillicon carbide to increase the thermal shock resistance and abrasion resistance, and ensure small changes in the lining line. In the process of use, each castable plate is tightly bonded, without seams and castable peeling. And the petroleum coke is not sticky to the klin wall in the calcining process.