Description

Calcium Silicide is an inorganic compound primarily used as a powerful deoxidizing and desulfurizing agent in the metallurgical industry. Its ability to form stable silicates makes it a critical material for controlling the composition and improving the mechanical properties of various steel and iron alloys. Key industrial users include foundries, steel mills, and manufacturers of specialty alloys who require precise control over oxygen and sulfur content to enhance product quality and performance.

Application

• Steelmaking Deoxidizer: Used to remove dissolved oxygen from molten steel, preventing porosity and improving the strength and ductility of the final product.
• Cast Iron Inoculant: Acts as a nucleating agent to promote the formation of graphite in cast iron, resulting in improved machinability and thermal conductivity.
• Desulfurizing Agent: Effectively reduces sulfur content in iron and steel, minimizing hot shortness and improving workability.
• Alloying Additive: Serves as a source of silicon and calcium for the production of specialty ferrous and non-ferrous alloys.
• Thermite Production: A component in certain thermite mixtures for high-temperature welding and metal-cutting applications.
• Pyrotechnics: Used in the manufacture of some signal flares and incendiary devices due to its exothermic reaction properties.

Basic Information

Product Name	Calcium Silicide
CAS No.	12013-56-8
Molecular Formula	CaSi2 (common form)
Molecular Weight	96.25 g/mol (for CaSi2)
Synonyms	Calcium disilicide; Silicon calcium; Calcium silicon alloy; Calciosilicon; Calcium silicide (CaSi2); EINECS 234-542-9; Metallic reducing agent
EINECS	234-542-9

Quality Control

Our Calcium Silicide is manufactured under strict process controls to ensure batch-to-batch consistency and meets typical industrial-grade specifications. Quality is verified through a series of analytical tests, including chemical assay and particle size distribution analysis. A Certificate of Analysis (COA) detailing key parameters such as calcium content, silicon content, and impurity levels is provided with each shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials. Due to its nature as an easily oxidized material, it is recommended to store under an inert atmosphere (e.g., argon or nitrogen) for long-term preservation of quality. Keep away from moisture, acids, and strong oxidizing agents.

Specification

Item	Specification
Appearance	Gray to black lump or powder
Calcium (Ca) Content	30 - 33 %
Silicon (Si) Content	60 - 65 %
Iron (Fe)	≤ 3.0 %
Aluminum (Al)	≤ 1.5 %
Carbon (C)	≤ 0.5 %
Particle Size (Custom)	As per customer requirement

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.