At present, the steel industry primarily employs several types of deoxidation methods, which include the following:
1. Metallurgical Coke: This material is predominantly composed of metallurgical coke, characterized by its high carbon content, which serves to enhance the carbon levels in steel.
2. Secondary Foaming of Calcined Coal: Following high-temperature calcination, this material exhibits an elevated carbon content and a reduced sulfur content.
3. Petroleum Coke: Derived from petroleum, this type of coke possesses a high carbon content and low sulfur content, along with an increased absorption rate.
4. Graphitized Recarburizer: Subjected to high-temperature graphitization, this recarburizer features high carbon content, low sulfur content, and a significant absorption rate.
5. Natural Graphite Recarburizer: Composed of natural graphite, this material also demonstrates high carbon content and low sulfur content.
6. Secondary Firing of Composite Materials: This involves a mixture of various materials that exhibit complex physical and chemical properties. These materials can be utilized independently or in combination during the steelmaking process to achieve the desired carbon content and physical properties. The selection and application of these deoxidation agents should be guided by the specific requirements of the steel production process and the final product specifications.
