Name: Calcium carbide
Chemical Formula: CaC2
CAS Number: 75-20-7
UN Number: 1402
Class Grade: 4.3
HS Code: 2849100000

The commercial use of calcium carbide (CaC2) serves as a crucial foundation across global heavy industries, particularly in steel manufacturing, acetylene gas generation, and metallurgical slag conditioning. As a powerful reducing agent and thermal energy source, high-purity calcium carbide reacts predictably under controlled industrial environments, providing high gas yield and precise temperature regulation.

Among various size specifications, 25-50mm calcium carbide is one of the most widely specified particle sizes in steel mills and chemical plants due to its optimal balance between dissolution speed and reaction stability.
Steelmaking Reheating & Deoxidation: In Converter (BOF) and Electric Arc Furnace (EAF) operations, the 25-50mm size easily penetrates heavy slag layers to react directly within the molten steel bath, raising temperatures effectively and improving slag fluidity.
Acetylene Gas Production: Ideal for industrial acetylene generators, 25-50mm granularity maintains a stable chemical reaction rate, preventing feeder clogging while ensuring a continuous, high-volume gas output.
Reduced Material Dust Loss: Compared to smaller granules, the 25-50mm size generates minimal fine dust during transport and feeding, drastically reducing material waste caused by dust extraction systems.

Selecting the right packaging is essential for optimizing overall procurement and logistics costs. While 50kg drums are common, upgrading to 100kg iron drums provides distinct commercial advantages for international buyers:
Lower Packaging Unit Cost: 100kg packaging significantly reduces the proportion of steel drum material costs per metric ton, making it a far more economical choice than 50kg drums.
Maximized Shipping Space Utilization: The dimension design of 100kg drums optimizes loading density inside standard 20ft containers, minimizing spatial gaps and cutting down sea freight expenses per ton.
Efficient Warehousing & Transport: Moving 100kg drums cuts forklift handling operations by half, enabling faster unloading at destination ports and saving labor and storage expenses.