98% Sic 0-1mm 1-3mm 3-5mm 5-8mm 8-12mm Black Silicon Carbide for Steelmaking Deoxidation
| Silicon Carbide | ||||
| Item | SiC | F.C | Fe2O3 | H2O |
| SIC99 | ≥99% | ≤0.1% | ≤0.1% | ≤0.1% |
| SIC98 | ≥98% | ≤0.25% | ≤0.3% | ≤0.3% |
| SiC97 | ≥97% | ≤0.3% | ≤0.4% | ≤0.3% |
| SiC95 | ≥95% | ≤1% | ≤1% | ≤0.3% |
| SiC88 | ≥88.5% | ≤2.8% | ≤3% | ≤0.5% |
| SiC70 | ≥70.5% | ≤8% | ≤3.5% | ≤0.5% |
Silicon Carbide (SiC) in Steelmaking
Silicon carbide (SiC) is primarily used in steelmaking as a high-efficiency deoxidizer, carburizer, and molten steel purifying agent.
1.High-Efficiency Composite Deoxidation
*SiC decomposes to generate SiO2 and CO gas. These products combine with free oxygen in the molten steel to form low-melting-point slag, which floats to the surface, significantly reducing oxygen content.
*Deoxidation efficiency is ~40% higher than traditional aluminum deoxidizers,
*Reduces dust emissions by 30% and slag volume by 15%.
*Shortens steelmaking time and lowers power consumption by 5%-8%.
2.Carburization & Element Recovery
*Carburizing Effect: SiC contains approximately 26%-27% carbon, enabling partial substitution for carburizers to increase molten steel carbon content37.
*Improved Alloy Recovery Rate: Enhances the absorption of alloying elements such as manganese and chromium; e.g., manganese recovery increases from 82% to 90%.
3.Molten Steel Purification & Quality Enhancement
*Defect Reduction: Lowering oxygen content reduces defects like subsurface blowholes and porosity, while improving the solidification structure of cast billets.
*Grain Refinement: Purifies harmful impurities (e.g., sulfur) in the steel, refines grain structure, and improves the surface finish of machined components