Superior Desulfurization Efficiency: The use of calcium carbide enables fast chemical reaction kinetics, achieving sulfur removal rates exceeding 90% while reducing slag generation.
Dual Function (Desulfurization & Deoxidation): Beyond sulfur removal, the use of calcium carbide helps scavenge dissolved oxygen in molten steel, optimizing alloy addition yields and improving clean steel purity.
Custom Particle Size Distribution: Available in fine powders (0.1-1mm for injection systems) and granules (1-3mm, 3-8mm) tailored for pneumatically injected slag treatment.
Export-Grade Packaging & Safety: Supplied in moisture-proof, nitrogen-purged 1000kg bulk bags or heavy-duty steel drums, compliant with UN 1402 Class 4.3 dangerous goods transport standards.
Factory-Direct B2B Supply: Full chemical analysis certificates (COA), ISO 9001 compliance, and steady monthly capacity to support continuous steel plant operations globally.
In modern secondary metallurgy and hot metal processing, the industrial use of calcium carbide (CaC2) remains one of the most chemically effective and economically viable methods for deep desulfurization and slag treatment. As a dedicated metallurgical chemical manufacturer, we supply premium-grade calcium carbide reagents specifically optimized for torpedo cars, transfer ladles, and secondary steelmaking operations.
Our high-purity calcium carbide is engineered to accelerate chemical reaction kinetics, achieve rapid sulfur removal, and minimize total slag volume, enabling commercial steel mills to meet stringent ultra-low sulfur specifications efficiently.
Our calcium carbide reagents undergo rigorous quality testing to ensure uniform particle size distribution, minimal gas loss, and optimal reactivity upon injection into molten iron.
| Parameter / Chemical Feature | Metallurgical Grade Value | Primary Commercial Advantage |
| Active Chemical Formula | CaC2 (Calcium Carbide) | Rapid affinity for sulfur in hot metal |
| Calcium Carbide Purity | ≥80%-90% | Maximizes active reagent per injected ton |
| Desulfurization Efficiency | ≥90% Sulfur Removal | Enables ultra-low sulfur steel production (≤0.002% S) |
| Particle Granularity | 0.1-1mm(Injection),1-3mm, 3-8mm | Custom sizing for pneumatic injection systems |
| Gas Yield Rate | 260-295 L/kg | High reactivity for rapid slag formation |
| Packaging Compliance | UN 1402 Class 4.3 Sealed Drums / Bags | Moisture-proof protection during transit |
The primary metallurgical use of calcium carbide lies in hot metal pretreatment before basic oxygen furnace (BOF) or electric arc furnace (EAF) processing. Injected pneumatically with inert carrier gas (nitrogen or argon), calcium carbide reacts vigorously with dissolved sulfur in molten pig iron:
This reaction produces stable calcium sulfide (CaS) which quickly rises to the slag layer, allowing easy skimming without significant iron loss or temperature drops.
During secondary steelmaking, the use of calcium carbide extends beyond desulfurization. As a strong reducing agent, it aids in slag deoxidation, converting iron oxides (FeO) and manganese oxides (MnO) back into metallic form. This process protects valuable alloy additives, improves synthetic slag fluidization, and enhances overall steel cleanliness.
Cost-Effective Chemical Efficiency: Compared to magnesium or lime-only desulfurization agents, the direct use of calcium carbide reduces total reagent consumption per ton of steel, significantly cutting raw material procurement budgets.
Lower Slag Volume & Metal Loss: Rapid reaction kinetics minimize excess slag formation, leading to cleaner metal separation, reduced iron yield loss during skimming, and extended refractory lining life.
Tailored Granularity for Injection Systems: We provide precise particle screening from micro-powders for dense-phase injection lance systems to coarse granules for top-addition ladle processes.
Uncompromising Quality & Moisture Protection: To eliminate safety hazards associated with acetylene gas release, our products are packed in heavy-duty 1000kg bulk bags or 100kg steel drums flushed with dry nitrogen gas.
We strictly adhere to international dangerous goods transport protocols for smooth customs clearance and safe storage at steel manufacturing sites:
Packaging Standards:1000kg UN-certified moisture-proof bulk bags or 50kg / 100kg sealed steel drums.
Quality Assurance: Full Certificate of Analysis (COA), Safety Data Sheet (SDS), ISO 9001, and ISO 14001 certifications accompany every batch shipment.
Supply Reliability: Monthly manufacturing capacity exceeding 8,000 Metric Tons with flexible FOB, CFR, or CIF delivery terms to major global metallurgical ports.
Partner with a trusted global chemical supplier to optimize your steel mill's desulfurization costs and production throughput. Contact our metallurgy technical support team today to receive detailed chemical analyses, request factory samples, or obtain a competitive quotation tailored to your plant's consumption metrics.
