What is the production process of calcium carbide?
Leave a message
What is the production process of calcium carbide?
1. Basic principles of calcium carbide production
Industrial calcium carbide is made of quicklime and carbon raw materials (lignite, coke, etc.) in an electric furnace at a high temperature of 1900-2200℃ according to the equation: CaO+3C→CaC2+CO-466 kJ.
Calcium carbide is a chemical combination of lime and carbon. For each calcium carbide molecule, one molecule of calcium oxide and three atoms of carbon are required. For each molecule of calcium carbide, 466 kJ of heat needs to be absorbed.
2. Batching requirements
Furnace charge ratio: lime: coke 100: 58~70 (basic)
Carbon raw material particle size 3~25mm＞90%
Carbon raw material moisture ≤1%
Lime particle size 5~40mm＞90%
3. Closed calcium carbide furnace process flow:
Qualified lime and coke enter the silo of the batching station, and enter the weighing hopper through the vibrating feeder according to the set ratio. According to the hopper limit, in order, they are mixed by the vibrating feeder and the belt conveyor and enter the ring silo. Lime and coke react under high temperature conditions to generate liquid calcium carbide. The mixture in the material pipe continuously enters the furnace electrode by its own weight.
The liquid calcium carbide smelted in the calcium carbide furnace is discharged regularly and flows into the calcium carbide pot on the furnace trolley through the flow nozzle. It is pulled into the cooling room by a traction machine, cooled by a 5-ton crane, the empty pot is poured out, and pulled back to the furnace mouth by the winch to wait for the next furnace to be discharged.
Address：Huafu Commercial Center, Wenfeng District, Anyang City, Henan Province, China
