Calcium Carbide and its differents applications:

1. Acetylene Production
   Acetylene is a gas produced from calcium carbide and widely used in industries for welding and oxyfuel cutting processes. Acetylene is colorless, flammable and odorless gas in its pure state. Slightly lighter than air, it is soluble in water and, when combined with air or oxygen, produces a hot, luminous and smoky flame. Calcium carbide applied in industrial generators or portable generators (carbide lamps), produces acetylene, as gas with a very high flame temperature, making it ideal for achieving the best finish in welding and metal cutting. In addition to welding and cutting processes, acetylene can also be used in the manufacturing of materials such as explosives, solvents, organic compounds, plastics and rubbers.
   
   
2. Steelmaking
   2.1 Steelmaking - Steelmaking - Ensure the productivity gains with cost reduction in steelmaking and improved quality of the produced steel: The desulfurization and deoxidation capabilities of calcium carbide contribute to achieving higher quality of the final product while reducing production costs. Trough slag deoxidation, calcium carbide transforms oxidized slag into a reducing slag, promoting:
   • Recovery of Fe and Mn for the metal
   • Increased alloy yield
   • Improved steel clarity
   • Lower energy and electrode consumption
   • Better desulfurization rates in the ladle furnace, with shorter treatment time
   • Longer refractory campaign in the ladle slag line
   2.2 Iron Desulfurization - High desulfurization rates with low slag generation. In the process of deep mono-injection in ladles or torpedo cars, calcium carbide-based desulfurizing agents can be used together with other inputs trough a refractory lance, using nitrogen as the transport gas. In the process of deep co-injection, carbide can be used together with metallic magnesium, especially in ladles, also trough a fixed or rotating lance. Discover the advantages of using carbide:
   • Low slag generation and consequent low metal loss
   • High desulfurization rates
   • Low temperature drop of the metal
   • High repeatability index
   • Short treatment times
3. Iron Foundry
   Due to its affinity with sulfur, carbide reduces the amount of this contaminant in the produced metal, adding value to the final application of cast irons. Additionally, it can be used an energy source in Cupola furnaces, allowing for a reduction in the amount of coke and coal used in the process.
   
   Higher tapping temperatures: Maintaining the composition of the charge unchanged, the addition of 1% foundry carbide can increase the tapping temperature by up to 30°C. An addition of 2% can raise this temperature up to 55°C.
   
   Improved casting properties: For foundries working with a low tapping temperature, the temperature increase provided by the addition of foundry carbide can reduce the possibility of casting defects. Additionally, slag separation is better at higher temperatures, allowing for the casting or purer metal.
   
   Rapid recovery after shutdowns: When used regularly in the charge, carbide enables quick recovery of the metal temperature after shutdowns. Some foundries use the addition only for planned shutdowns, calculating the time needed to have the carbide in the coke bed at the time of restart.
   
   Higher temperature of molten iron during startups: By using foundry carbide in the coke bed, the first casting during startups can reach a temperature sufficient for pouring into molds, thus preventing any loss. With the addition of 4% foundry carbide during initial charges, the first casting can reach a temperature about 55°C higher than normal, with rapid growth. To achieve such results, careful charge preparation and ignition of the coke bed are necessary.
   
   Increased melting rates: The high temperatures produced by foundry carbide allow for a reduction of up to 34% in coke charge, with a 33% increase in hourly melting rate. These higher melting rates are particularly beneficial for cupolas with low air supply capacity or low charge levels. They can also be useful when demand exceeds the normal capacity of the cupola, as well as reducing the molding time and the time required to accumulate sufficient metal for pouring into large molds. Therefore, the use of carbide can guarantee higher melting rates without causing the most common inconveniences in this operation, such as oxidation, low pouring temperature, and erratic control of product quality
   
   More stable operation: As the foundry carbide descends trough the charge, it forms a highly fluid and superheated slag. This slag minimizes operational issues such as the formation of skulls or crusts and the cooling of the slag notch.
   
   
4. Other applications:
   Calcium carbide can be used in various other applications within and outside the industry, such as:
   4.1 Agriculture: Soil moisture analysis due to its hygroscopic property. 
   4.2 Plastics Industry: Assists in the production of resin, PVC and PVA.
   4.3 Carbon black: Used in battery manufacturing.

BEFORE USING THE PRODUCT READ THE F.I.S.P.Q. (Safety Data Sheet for Chemical Products) of Calcium Carbide

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