As a top-tier China Calcium Carbide manufacturer and exporter, we supply high-purity CaC2 50-80mm lumps engineered for maximum gas generation and chemical stability. Screened to rigid 50–80mm granularity standards, our product prevents feeding blockages in automatic generators while delivering a guaranteed gas yield of 295L/kg.
As a premier supplier in the global chemical industry, our China Calcium Carbide 50-80mm lump product is manufactured to meet the rigorous demands of industrial acetylene gas generation and metallurgical steel production. Produced through high-temperature reaction in modern submerged arc furnaces, our solid chemical compound (CaC2) features uniform granularity, low residue formation, and high chemical reactivity.
Purchasing China Calcium Carbide directly from an established manufacturing source guarantees stable quality control, dependable factory-direct pricing, and scalable monthly supply capabilities. Our 50-80mm fraction is specifically sieved to eliminate dust and oversized chunks, delivering optimal performance for automated plant systems worldwide.
| Technical Indicator | Guaranteed Specification Standard |
| Chemical Name | Calcium Carbide / Calcium Acetylide (CaC2) |
| CAS Number | 75-20-7 |
| Granularity Sizing | 50 mm – 80 mm (Precise mechanical screening) |
| Gas Yield Output | ≥295 L/kg (Tested at 20℃ / 101.3 kPa) |
| Phosphine (PH3) Content | ≤0.08% (v/v) |
| Hydrogen Sulfide (H2S) Content | ≤0.15% (v/v) |
| Dangerous Goods Class | Class 4.3 (Dangerous when wet, UN 1389) |
| Standard Packaging | 50 kg or 100 kg UN-certified brand-new steel drums (Nitrogen purged) |
The 50–80 mm lump classification is recognized globally as the preferred standard size for continuous acetylene gas generation. Specifying this precise granularity offers key operational benefits:
Seamless Feeding in Generators: The consistent 50-80mm lump size prevents bridging, jamming, and material clogging in automatic feeding hoppers and carbide-to-water generators.
Stable Reaction Kinetics: Compared to smaller particle sizes, 50-80mm lumps offer a smooth and controlled reaction rate, preventing sudden localized temperature surges and excessive pressure build-up.
Minimization of Residue & Sludge: Strictly sieved to minimize fine dust particles, this grading ensures maximum gas output per metric ton while reducing wastewater treatment burden.
Acetylene Gas Generation Plants:
Serves as the primary raw material for producing high-purity acetylene gas (C2H2) utilized in oxy-acetylene welding, flame cutting, metal fabrication, and chemical synthesis (such as PVC monomers and solvents).
Ladle Metallurgy & Steelmaking Desulfurization:
Acts as an effective desulfurizing and deoxidizing agent in ladle refining furnaces (LRF) to achieve low-sulfur steel grades and facilitate rapid slag formation.
Chemical Intermediate Manufacturing:
Used as a chemical precursor for manufacturing calcium cyanamide (lime nitrogen), synthetic rubber, and fine chemical derivatives.
Handling high-grade China Calcium Carbide requires strict adherence to international maritime dangerous goods (IMDG) regulations:
Hermetically Sealed Drums: Packed in brand-new, heavy-duty 50kg or 100kg steel drums designed to withstand pressure changes and physical impact during long ocean transits.
Nitrogen Purging Technology: Every drum is purged with inert nitrogen gas prior to sealing to displace ambient moisture and air, preventing degradation and ensuring shelf-life stability.
Export Certification & Inspection: Every shipment comes with complete documentation including Certificate of Analysis (COA), Safety Data Sheet (SDS/MSDS), Packing List, and UN Dangerous Goods Packaging Certification. Third-party pre-shipment inspections by SGS, Bureau Veritas (BV), or Intertek are supported upon request.
Whether you require containerized shipments (FCL) for chemical distribution or continuous contract supply for steel manufacturing, we offer competitive FOB, CFR, and CIF commercial terms.
Contact our export sales division today to request the latest quote, product specification sheets, and batch COA samples for your China Calcium Carbide 50-80mm procurement requirements.
