Calcium carbide (CaC2) is an important industrial chemical primarily manufactured by reacting lime and coke in an electric furnace at temperatures of approximately 2200–2500°C. While pure calcium carbide is transparent and colorless, commercial-grade material typically appears steel-grey to reddish-brown due to impurities introduced during production. Industrial-grade calcium carbide is generally about 80% pure, with the remainder consisting mainly of calcium oxide and other minor impurities.
The most significant characteristic of calcium carbide is its reaction with water to produce acetylene gas, making it the principal commercial source of acetylene. This gas is widely used in oxyacetylene welding and metal cutting, as well as in the production of numerous organic chemicals, solvents, resins, plastics, synthetic rubber, pharmaceuticals, dyes, acetaldehyde, acetic acid, vinyl acetate, and related compounds. Calcium carbide is also an essential raw material for manufacturing calcium cyanamide, which serves as both a fertilizer and an intermediate for various chemical products. Additional applications include use as a dehydrating agent, reducing agent, desulfurizing agent in metallurgical operations, steel hardening, graphite production, hydrogen generation, and the reduction of metallic oxides.
Historically, calcium carbide was first produced in laboratory experiments by early researchers such as Hare and Wohler before becoming an important industrial material. According to the project report, the calcium carbide market is estimated at 34.89 million tons in 2026 and is projected to reach 42.23 million tons by 2031, growing at a CAGR of 3.89%. The report also highlights increasing demand for high-purity grades, ongoing investments in energy-efficient production technologies, and continued growth opportunities driven by chemical manufacturing, particularly across the Asia-Pacific region.
| Particular | Value |
|---|---|
| Plant Capacity | 100.00 Tons /Day |
| Land & Building ( 5.4 Acre) | Rs. 13.15 Lac |
| Plant & Machinery | Rs. 20.66 Lac |
| Working Capital for 1 Month | Rs. 7.26 Lac |
| Total Capital Investment | Rs. 41.88 Lac |
| Rate of Return | 9% |
| Break Even Point | 83% |
Calcium carbide is primarily used to produce acetylene gas. Acetylene is widely used in oxyacetylene welding and cutting and serves as a feedstock for manufacturing numerous organic chemicals, solvents, plastics, resins, and synthetic rubber. Calcium carbide is also used to manufacture calcium cyanamide fertilizer and finds applications as a dehydrating, reducing, and desulfurizing agent in metallurgical and chemical industries.
Calcium carbide is manufactured by reacting lime and coke in an electric furnace. The process requires extremely high temperatures, generally between 2200°C and 2500°C, and substantial electrical energy. After production, the material is cooled, crushed, screened, and prepared for storage or further processing before being supplied for industrial applications.
Calcium carbide is a key raw material for producing several industrial chemicals. The acetylene generated from calcium carbide serves as an intermediate in manufacturing products such as acetaldehyde, acetic acid, vinyl acetate, plastics, synthetic rubber, and other specialty chemicals. Its versatility makes it an essential material across multiple downstream industries.
Calcium carbide must be kept dry and handled carefully. Because it reacts vigorously with water to release highly flammable acetylene gas, storage areas should remain moisture-free and well ventilated. Appropriate protective equipment, proper packaging, and compliance with industrial safety procedures help reduce operational risks during handling and transportation.
The principal raw materials are lime and coke. These materials are carefully weighed and mixed before being charged into an electric furnace, where high-temperature processing converts them into calcium carbide. Consistent raw material quality is important for maintaining product quality and process efficiency.
Calcium carbide is widely used by the chemical, metallurgical, fertilizer, and fabrication industries. It supports the production of acetylene-based chemicals, calcium cyanamide fertilizers, steel processing operations, and welding applications. Demand is closely linked to industrial manufacturing, infrastructure development, and downstream chemical production.
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