TIANJIN ZHONGYING CHEMICAL CO., LTD. is a premier, modern chemical enterprise at the forefront of calcium carbide (CaC2) research, development, and large-scale manufacturing. Leveraging abundant regional resource advantages and cutting-edge production technology, we deliver high-purity, exceptionally stable calcium carbide tailored for diverse downstream industrial applications.
By integrating advanced manufacturing technology with strategic regional resources, we supply premium-quality, highly stable chemical products to worldwide downstream industries. Driven by safety, eco-friendly manufacturing, and uncompromised quality, we stand as a benchmark enterprise dedicated to fueling your industrial success.

The particle size (granularity) of calcium carbide directly dictates its gas yield rate and reaction speed with water. Choosing the right size is critical for optimizing your industrial processes. Below is a detailed breakdown of our standard sizes and their distinct applications:
Reaction Characteristics: Extremely fast reaction rate with a rapid, intense release of acetylene gas. Requires highly controlled feeding mechanisms.
Primary Applications: * Steel Desulfurization: Widely used in the metallurgical industry as a powerful desulfurizing agent to remove sulfur from molten iron.
Chemical Synthesis: Acts as a reagent in specialized chemical processes requiring a fast reaction surface area.
Reaction Characteristics: Balanced and steady gas evolution rate, offering an optimal surface-to-volume ratio.
Primary Applications:
Automated Acetylene Generators: Ideal for compact or automated low-pressure acetylene gas plants.
Metal Fabrication: Commonly utilized in portable or small-scale oxy-acetylene welding and cutting equipment due to its steady gas flow.
Reaction Characteristics: Slow, sustained, and highly controllable gas release. These large lumps minimize dust generation and are safer to handle in bulk.
Primary Applications:
Large-Scale Industrial Acetylene Plants: The industry standard for high-capacity industrial gas factories producing bulk acetylene gas.
Fruit Ripening (Agricultural Grade): Specifically sorted large lumps are safely utilized in controlled atmospheric environments for uniform fruit ripening (such as bananas and mangoes).
| Particle Size (mm) | Reaction Speed | Best For... | Dust Level |
| 2–4 mm / 4–7 mm | Fast / Instant | Steelmaking, Metallurgy Desulfurization | Moderate |
| 7–15 mm / 15–25 mm | Steady / Moderate | Small Acetylene Generators, Welding | Low |
| 25–50 mm / 50–80 mm | Sustained / Controlled | Industrial Gas Factories, Chemical Production | Very Low |
| 80–120 mm | Slow / Long-lasting | High-capacity Acetylene Plants, Agriculture | Minimal |

Fully Integrated Production: Our advanced crushing and screening machinery ensures zero contamination and strict adherence to size tolerances. Because we manufacture our own export-grade steel drums, your cargo is sealed against moisture under strict quality control.
15+ Years Export Expertise: We understand the logistical compliance required for Class 4.3 hazardous materials.
Certified for Global Export: Fully compliant with international shipping regulations, backed by complete MSDS and export certification.
Flexible LCL Solutions: Avoid high inventory costs. Order a customized mix of 2-4mm up to 80-120mm sizes in a single container.
Guaranteed High Gas Yield: Our rigorous testing ensures premium gas output (up to 305L/KG) across all commercial sizes.
Contact our engineering team today to request a quotation or discuss your customized packaging and particle size requirements.