Precise Size Screening: Strictly filtered to 15-25mm lump sizes with minimal dust fines, preventing hopper blockages and gas pressure spikes.
Exceptional Gas Yield: Delivers a guaranteed minimum acetylene gas output of ≥290L/kg (at 20°C and 101.3 kPa) for maximum process efficiency.
In high-precision chemical manufacturing and heavy metal fabrication, particle sizing dictates reaction efficiency, gas evolution stability, and operational safety. Calcium carbide (CaC_2) remains a fundamental raw material across global supply chains. Among technical size classes, 15-25mm calcium carbide is engineered specifically for automated feeding systems and rapid-reaction gas generators that require high reactivity without sacrificing flow control.
By offering a balanced lump dimension, this specific granulation bridges the gap between ultra-fine carbide fractions and heavy lump sizes, establishing itself as a standard material choice for chemical processors worldwide.
The manufacturing of high-purity calcium carbide involves the electrothermal smelting of metallurgical coke and quicklime under intense temperatures inside electric arc furnaces. Following solidification, the rock-like mass undergoes specialized crushing and strict mechanical screening to yield precise lump distributions.
Procuring 15-25mm calcium carbide delivers key operational benefits for industrial users:
The core commercial use of high-grade 15-25mm calcium carbide lies in generating pure acetylene gas. Acetylene serves as a critical high-temperature fuel gas for oxy-acetylene flame cutting, industrial welding, brazing, and metal heat-treating processes across shipyards and structural steel plants.
In secondary steelmaking and foundry operations, calcium carbide is added to molten metal ladles to act as a powerful deoxidizing and desulfurizing agent. The chemical reaction removes unwanted sulfur impurities, enhancing ductility, impact toughness, and tensile performance in high-grade steel alloys.
Beyond thermal applications, acetylene derived from quality calcium carbide is utilized as an organic chemical intermediate for manufacturing PVC resins, synthetic rubbers, acetic acid, and calcium cyanamide agrochemicals.
Our production lines operate under strict quality management frameworks to ensure every export shipment meets international technical benchmarks:
| Quality Parameter | Standard Specification |
|---|---|
| Product Size Range | 15 - 25 mm (≥ 90% pass rate) |
| Acetylene Gas Yield | ≥ 295 L/kg (Standard Temperature & Pressure) |
| Chemical Formula | CaC2 |
| Impurity Limit (PH3) | ≤ 0.05% (v/v) |
| Impurity Limit (H2S) | ≤ 0.15% (v/v) |
| Physical State | Dark gray to brown solid crystalline lump |
Because calcium carbide reacts rapidly with air humidity to release flammable acetylene gas, export shipments adhere strictly to dangerous goods regulations (UN 1402, Class 4.3):
We supply international distributors, steelworks, and gas companies with competitive FOB/CIF terms, flexible container loadings, and stable year-round production capacity. Contact our technical export division today for custom pricing and long-term supply agreements.
