Calcium Carbide Stones

Calcium Carbide Stones are a primary and unprocessed bulk form of Calcium Carbide, typically ranging in size from 15mm to 25mm. They are produced directly in an electric arc furnace at extreme temperatures (~2,200°C) from a mixture of lime and coke. This lump form is the foundational product from which other forms like granules or powder are derived, and it is primarily used in large-scale industrial applications such as acetylene generation for gas welding/cutting and as a desulfurizing agent in steelmaking. Wanding provides this high-quality, industrial-grade product to meet robust industrial demands.

Calcium Carbide Stones Info

Shape: white crystals, black lumps, purple or gray cross-section for industrial products
Available particle size: 1-4mm, 4-7mm, 7-15mm, 15-25mm, 25-50mm, 50-80mm, 80-120mm.
Gas production: 210L/KG, 230L/KG, 260L/KG, 295L/KG, depending on the size of the particles. 
Physicochemical Properties: The solid of the ore is brown or black solid, the pure product is white crystal (containing CaC2 is purple). Density 2.22g/cm3, melting point 2300℃ (with CaC2 content), immediately react violently with water to generate acetylene and release heat, calcium carbide content of different melting point will also change.

Calcium Carbide Stones Applications

Mainly used in the production of acetylene gas. Also used in organic synthesis, oxyacetylene welding. Calcium carbide reacts with water to generate acetylene can be used to synthesize many organic compounds, such as synthetic rubber, synthetic resins, acetone, vinyl ketone, carbon black and so on. Calcium carbide powder and nitrogen heating, the reaction generated calcium cyanamide, that is, lime nitrogen, cyanide salt and lime nitrogen heating and melting reaction, used in gold mining and non-ferrous metal industry. Tourmaline itself can be used as a desulfurizer in the iron and steel industry. Produces polyvinyl chloride.

• Large-Scale Acetylene Generators: Used in centralized gas plants for welding, cutting, and chemical synthesis, where their size ensures controlled, sustained gas production.

• Steelmaking Desulfurization: Charged directly into ladles or torpedo cars to efficiently remove sulfur from molten iron, improving steel quality.

• Production of Calcium Cyanamide: Served as the feedstock in fixed-bed furnaces to react with nitrogen gas and produce calcium cyanamide for fertilizers and chemicals.

Packing: 50kg iron drum or 100kg iron drum packing, 22.5 tons/20'fcl.

Calcium Carbide Stones Specification

Calcium Carbide Stones Supplier

Our company is a professional calcium carbide supplier with independent import and export rights integrating raw calcium carbide processing, packaging, transportation and sales. All our products meet international quality standards and are highly rated in different markets around the world. We accept international professional inspection. (eg BV/SGS/CCIC). 

• Two Decades of Specialization: Focused solely on calcium carbide since 2002. We are a manufacturer with our own factory, not a trader.

• End-to-End Control: Manages the entire process from raw materials and smelting to processing and packaging, ensuring consistent quality and reliable supply.

• Verifiable Quality: Products strictly comply with the Chinese national standard (GB209-2006) and proactively support international inspections (SGS, BV, etc.) for transparent, trusted quality.

• Compliant Shipping Assurance: Expert in international hazardous goods (Class 4.3) transport regulations. Provides sealed steel drum packaging and full compliant documentation to ensure safe arrival.

• Flexible & Responsive: Offers samples, customized sizing (OEM/ODM), and factory visits. Direct communication enables quick support for specific project needs.

• Reduces Your Sourcing Risk: Becomes a stable, dependable link in your supply chain through process control, compliance, and end-to-end service.

FAQ

Q: Where is your plant located?

A: Our calcium carbide factory is located in Ningxia, which is near carbide raw material place.  It covers an area of 6000 aquare meters.With monthly production capacity of 8000 tons.

Q: How can you guarantee the quality? 

A: We will take a lot of sampling testing second time during carbide processing to ensure products with good gas yield. 

We often do air pressure testing to drums, ensure carbide drums seals tight and safety.

We will take sampling test again before goods loading, ensures loaded goods with correct weight, sizes, gas yield and quantity.

Our carbide Production is based on Chinese National Standard: GB10665-2004.

We accept on-site inspection at Shanghai port and randomly select a barrel to check the quality of the goods. If the quality is not qualified, you do not have to work with us.

Q:  What is the gas yield of your product?

A: Typically, the gas yield of the particle size 80-120mm, 50-80mm, 25-50mm  is 295L/kg~305L/kg.

Q: What is the delivery time? 

A: It is usually within 15 working days after receiving the deposit or original L/C. 

Q: What is your minimum order quantity (MOQ)?

A: One container, usually 22.5t.

Q: Can I request a sample before placing a bulk order?

A: No, but we support pre-shipment port inspection.

Q: What are your main shipping terms and delivery ports?

A: Usually CIF/FOB, with Shanghai or Tianjin ports.