Graphite electrode is a basic tool for smelting ferroalloys. Its function and properties are well known by metallurgy professionals. The quality of our product is certified by national metallurgy carbon material sampling analyze. Our electrode can be customized to suit various requirements.
Graphite electrodes are made of petroleum-based needle coke or coal tar. The former is a byproduct of oil refining, while the latter is produced from coal tar during coke production. The former is produced in a process that takes around six months.
Graphite electrodes are primarily used in electric arc furnaces for steelmaking. The graphitization process of graphite electrodes takes between 2800 and 3000 degrees Celsius. They are also used as anodes in electrolysis processes for metals.
Carbonaceous reductants are used to reduce iron oxides to iron. The reduction reaction takes place in a molten bath with high carbon content. It can be carried out directly on the iron oxides or indirectly. The process also involves the addition of carrier gas and oxygen-containing gas.
Carbonaceous reductants are a major part of the smelting process and help reduce oxide compounds in mineral ore. They do this through a bouduard reaction or by direct reduction. Carbon monoxide plays a lesser role in this process. However, it can still be used as a reducing agent for smelting ferroalloies.
The graphite electrode is a device that is used in the smelting of ferroalloies. It is usually mounted over the furnace bed. It is subjected to increasing temperatures, which causes the lighter tar fractions to distill off. Higher temperatures also cause the electrode to crack and carbonate, causing an increase in its density. The electrode also becomes impure at its lower tip.
The function of a graphite electrode used in ferroalloy smelting depends on the amount of scrap used. It is crucial to use high quality scrap for a better slagging effect. If scrap is of low quality, it will prolong the smelting time and increase the risk of electrode bottom fracture and damage. In addition, electrodes can be damaged if the electrical furnace's power supply equipment does not match their specifications. This is why proper selection of power curve and gear is essential to their service life. In addition, electrodes must have small thermal expansion coefficients and high mechanical strength.
Ferrosilicon alloys are used for various applications, such as the magnetic circuit of electrical transformers. They can also be used in deoxidizing and inoculating processes and can be used as fuel. These alloys can be produced in high purity levels. Impurities in ferrosilicon alloys can be eliminated by proper processing.
When the ferrosilicon is processed, it is typically cast into large slabs. This process is known as continuous casting. Ingots can also be used to produce ferrosilicon, but their brittle nature makes them susceptible to breakage.
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