The advantages of graphitized recarburizers compared to petroleum coke recarburizers

As one of the main graphite sources of molten iron, recarburizers are often overlooked. In fact, adding a recarburizer is not a recarburizer, but to increase graphite to obtain better matrix structure and mechanical properties. No recarburizer achieves this effect. The production of qualified recarburizers undergoes strict material selection and high-temperature graphitization treatment to reduce sulfur, gas (nitrogen, hydrogen, oxygen), ash, volatile matter, moisture and other impurities to improve purity.

Avoid the occurrence of nitrogen holes more effectively. At the same time, the carbon atoms change from the original disorderly arrangement to an orderly layered arrangement, and most of the carbon atoms become the driving force for graphitization. The process is called graphitization. The surface of the recarburizer without high-temperature graphitization treatment is covered with a thin viscous gray layer, and there is almost no direct dissolution in the molten iron. As time goes by, the carbon gradually diffuses and dissolves in the molten iron. The dissolution time of the recarburizer is increased, and the absorption of the recarburizer is reduced. Only the recarburizer that has undergone graphitization can quickly melt carbon atoms in the molten iron, and grow into graphite in the shape produced by the solid state under the forced nuclear driving force. If the selected recarburizer is not subjected to high temperature graphitization treatment, the graphitization driving ability of carbon atoms will be greatly reduced, and the graphitization ability will be weakened. Even if the same amount of carbon is reached, the product quality will be completely different.