一种炼钢用增碳剂及其制备方法
High-density carbon raisers were prepared by pressure sintering of Si3N4 powder with carbon materials, which solved the problems of low efficiency, large temperature drop and binder influence of existing steelmaking carbon raisers. This achieved efficient and stable carbon content control and temperature compensation, and improved the precision and environmental friendliness of the steelmaking process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ANGANG STEEL CO LTD
- Filing Date
- 2023-07-25
- Publication Date
- 2026-07-17
AI Technical Summary
Existing steelmaking carbon raisers suffer from low carbon raising efficiency, significant temperature drop, the need for binders which affects the purity of molten steel, and high equipment investment, making it difficult to accurately control carbon content and temperature.
A high-density, binder-free carburizer is prepared by mixing Si3N4 powder with carbon materials and sintering under pressure. This ensures that the carburizer penetrates deep into the molten steel and compensates for the temperature drop, while Si3N4 is used to increase the temperature of the molten steel.
It achieves efficient and stable carbon recovery and temperature compensation, with a carbon refining agent specific gravity greater than 2.8 g/cm3, high compressive strength, environmentally friendly with no binder added, small fluctuation in carbon refining rate, and improved quality of finished steel products.