Graphite electrode is made of petroleum coke and needle coke as raw materials, coal tar pitch as a binder, and is made by calcination, batching, kneading, pressing, roasting, graphitization, and machining. It is released in the form of electric arc in an electric arc furnace Electric energy is a conductor that heats and melts the charge.
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According to its quality index, it can be divided into ordinary power graphite electrode, high power graphite electrode and ultra high power graphite electrode.
The main uses of graphite electrodes include:
(1) For electric arc steelmaking furnace
Electric furnace steelmaking is a big user of graphite electrodes. The output of electric furnace steel in my country accounts for about 18% of the output of crude steel, and graphite electrodes for steelmaking account for 70% to 80% of the total consumption of graphite electrodes. Electric furnace steelmaking uses graphite electrodes to introduce current into the furnace, and uses the high temperature heat source generated by the arc between the electric part and the charge for smelting.
(2) Used for submerged electric furnace
The submerged electric furnace is mainly used for the production of industrial silicon and yellow phosphorus. Its characteristic is that the lower part of the conductive electrode is buried in the charge to form an arc in the charge layer, and the heat energy from the resistance of the charge itself is used to heat the charge, which requires current High-density submerged electric furnaces need graphite electrodes. For example, about 100 kg of graphite electrodes are consumed for every 1 ton of silicon produced, and about 40 kg of graphite electrodes are consumed for every production of 1 ton of yellow phosphorus.
(3) for resistance furnace
Graphitization furnaces for producing graphite products, melting furnaces for melting glass, and electric furnaces for producing silicon carbide are all resistance furnaces. The materials in the furnace are both heating resistors and objects to be heated. Generally, conductive graphite electrodes are embedded at the end of the resistance furnace. In the furnace head wall of the part, the graphite electrode used here is discontinuously consumed.
(4) Used to prepare special-shaped graphite products
The blanks of graphite electrodes are also used for processing into various crucibles, molds, boats and heating elements and other special-shaped graphite products. For example, in the quartz glass industry, 10t of graphite electrode blanks are required to produce 1t of fused tubes; 100kg of graphite electrode blanks are required to produce 1t of quartz bricks.
Precautions for the use of graphite electrodes
Graphite electrode is an emerging electrode product in the current electrical industry. Compared with traditional electrodes, it has many advantages such as more stability, lighter weight, stronger conductivity, energy saving and environmental protection. In the daily use process of graphite electrodes, Need to pay attention to the following aspects in order to better protect the function of the electrode.
1. Keep dry
Graphite materials need to maintain a good degree of dryness during use. Therefore, when using this type of electrode, you must first check whether the surface is dry. If there is moisture, it cannot be used, but a special dehumidification process is required to make the graphite It can be used again after it is dry.
2. How to clean up
General graphite electrode products don’t seem to pay too much attention to cleaning, while graphite electrodes are different. It must be cleaned to avoid water and oil. Generally, compressed air is used for cleaning in the use environment, so that it can achieve Very good cleaning effect without polluting the electrode.
3. Hanging and placing
In the use of graphite electrodes, it is often necessary to hoist and assemble it, and when hoisting, pay attention to lifting the middle part of the electrode, and then turn its head down, and place it with a soft cushion. In this way, the entire electrode can be protected from vibration and damage, and the next installation can be carried out.
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3 min read
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Feb 22, 2023
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A graphite electrode is a type of electrode used in electric arc furnaces (EAFs) to melt and refine steel, iron, and other metals. It is made of graphite, a form of carbon that has unique properties such as high thermal conductivity, high melting point, low coefficient of thermal expansion, and good electrical conductivity. Graphite electrodes are essential components in the production of high-quality steel and are widely used in the metalworking industry.
Graphite electrodes are typically cylindrical in shape and range in size from 75 to 700 millimeters in diameter and 1 to 2 meters in length. They are installed in EAFs to conduct electric current and generate heat to melt and refine metal. When an electric current passes through the graphite electrodes, it generates an electric arc, which produces temperatures of up to 3,500°C (6,332°F). This extreme heat melts the metal in the furnace and allows impurities to be removed, resulting in a high-quality end product.
Graphite electrodes are chosen for EAFs due to their high electrical conductivity, low electrical resistance, and excellent thermal shock resistance. They are also relatively easy to shape and mold, which allows them to be manufactured in various sizes and shapes to meet the specific needs of different industries. The quality of graphite electrodes is determined by factors such as their electrical resistivity, flexural strength, thermal expansion coefficient, and oxidation resistance.
There are two main types of graphite electrodes: regular power (RP) and high-power (HP). RP electrodes are made from high-quality petroleum coke and are widely used in steel production. They are also used in non-ferrous metal production such as aluminum, silicon, and magnesium. HP electrodes, on the other hand, are made from high-grade needle coke and are used in the production of ultra-high-quality steel and other specialty alloys.
Graphite electrodes are typically manufactured through a process known as needle coke production. This involves heating petroleum coke at high temperatures to form needle-like structures that are then mixed with coal tar pitch and baked at high temperatures to produce graphite. The resulting graphite is then machined to the required size and shape for use in EAFs.
One of the main challenges in the graphite electrode industry is ensuring a stable supply of high-quality needle coke. The production of needle coke is a complex and expensive process, and there is a limited number of manufacturers worldwide. As a result, the cost of graphite electrodes can vary greatly depending on the availability and cost of needle coke.
In recent years, the graphite electrode industry has experienced significant fluctuations in price and demand due to factors such as changes in the global steel market, the closure of some needle coke plants, and the emergence of new EAF technology. Despite these challenges, the demand for graphite electrodes is expected to remain strong as the global steel industry continues to grow and evolve.
In conclusion, graphite electrodes are an essential component in the production of high-quality steel and other metals. Their unique properties make them ideal for use in EAFs, and their manufacture requires a complex and specialized process. Although there are challenges in the industry, the demand for graphite electrodes is expected to remain strong, and the industry will continue to evolve and innovate to meet the changing needs of the global metalworking industry.
We are a graphite electrode supplier. If you are interested in our products, please contact us now!
Graphite electrode is made of petroleum coke and needle coke as raw materials, coal tar pitch as a binder, and is made by calcination, batching, kneading, pressing, roasting, graphitization, and machining. It is released in the form of electric arc in an electric arc furnace Electric energy is a conductor that heats and melts the charge.
According to its quality index, it can be divided into ordinary power graphite electrode, high power graphite electrode and ultra high power graphite electrode.
The main uses of graphite electrodesgraphite electrodes include:
(1) For electric arc steelmaking furnace
Electric furnace steelmaking is a big user of graphite electrodes. The output of electric furnace steel in my country accounts for about 18% of the output of crude steel, and graphite electrodes for steelmaking account for 70% to 80% of the total consumption of graphite electrodes. Electric furnace steelmaking uses graphite electrodes to introduce current into the furnace, and uses the high temperature heat source generated by the arc between the electric part and the charge for smelting.
(2) Used for submerged electric furnace
The submerged electric furnace is mainly used for the production of industrial silicon and yellow phosphorus. Its characteristic is that the lower part of the conductive electrode is buried in the charge to form an arc in the charge layer, and the heat energy from the resistance of the charge itself is used to heat the charge, which requires current High-density submerged electric furnaces need graphite electrodes. For example, about 100 kg of graphite electrodes are consumed for every 1 ton of silicon produced, and about 40 kg of graphite electrodes are consumed for every production of 1 ton of yellow phosphorus.
(3) for resistance furnace
Graphitization furnaces for producing graphite products, melting furnaces for melting glass, and electric furnaces for producing silicon carbide are all resistance furnaces. The materials in the furnace are both heating resistors and objects to be heated. Generally, conductive graphite electrodes are embedded at the end of the resistance furnace. In the furnace head wall of the part, the graphite electrode used here is discontinuously consumed.
(4) Used to prepare special-shaped graphite products
The blanks of graphite electrodes are also used for processing into various crucibles, molds, boats and heating elements and other special-shaped graphite products. For example, in the quartz glass industry, 10t of graphite electrode blanks are required to produce 1t of fused tubes; 100kg of graphite electrode blanks are required to produce 1t of quartz bricks.
Precautions for the use of graphite electrodes
Graphite electrode is an emerging electrode product in the current electrical industry. Compared with traditional electrodes, it has many advantages such as more stability, lighter weight, stronger conductivity, energy saving and environmental protection. In the daily use process of graphite electrodes, Need to pay attention to the following aspects in order to better protect the function of the electrode.
1. Keep dry
Graphite materials need to maintain a good degree of dryness during use. Therefore, when using this type of electrode, you must first check whether the surface is dry. If there is moisture, it cannot be used, but a special dehumidification process is required to make the graphite It can be used again after it is dry.
2. How to clean up
General graphite electrode products don’t seem to pay too much attention to cleaning, while graphite electrodes are different. It must be cleaned to avoid water and oil. Generally, compressed air is used for cleaning in the use environment, so that it can achieve Very good cleaning effect without polluting the electrode.
3. Hanging and placing
In the use of graphite electrodes, it is often necessary to hoist and assemble it, and when hoisting, pay attention to lifting the middle part of the electrode, and then turn its head down, and place it with a soft cushion. In this way, the entire electrode can be protected from vibration and damage, and the next installation can be carried out.
Recarburizers
·
Follow
3 min read
·
Feb 22, 2023
--
A graphite electrode is a type of electrode used in electric arc furnaces (EAFs) to melt and refine steel, iron, and other metals. It is made of graphite, a form of carbon that has unique properties such as high thermal conductivity, high melting point, low coefficient of thermal expansion, and good electrical conductivity. Graphite electrodes are essential components in the production of high-quality steel and are widely used in the metalworking industry.
Graphite electrodes are typically cylindrical in shape and range in size from 75 to 700 millimeters in diameter and 1 to 2 meters in length. They are installed in EAFs to conduct electric current and generate heat to melt and refine metal. When an electric current passes through the graphite electrodes, it generates an electric arc, which produces temperatures of up to 3,500°C (6,332°F). This extreme heat melts the metal in the furnace and allows impurities to be removed, resulting in a high-quality end product.
Graphite electrodes are chosen for EAFs due to their high electrical conductivity, low electrical resistance, and excellent thermal shock resistance. They are also relatively easy to shape and mold, which allows them to be manufactured in various sizes and shapes to meet the specific needs of different industries. The quality of graphite electrodes is determined by factors such as their electrical resistivity, flexural strength, thermal expansion coefficient, and oxidation resistance.
There are two main types of graphite electrodes: regular power (RP) and high-power (HP). RP electrodes are made from high-quality petroleum coke and are widely used in steel production. They are also used in non-ferrous metal production such as aluminum, silicon, and magnesium. HP electrodes, on the other hand, are made from high-grade needle coke and are used in the production of ultra-high-quality steel and other specialty alloys.
Graphite electrodes are typically manufactured through a process known as needle coke production. This involves heating petroleum coke at high temperatures to form needle-like structures that are then mixed with coal tar pitch and baked at high temperatures to produce graphite. The resulting graphite is then machined to the required size and shape for use in EAFs.
One of the main challenges in the graphite electrode industry is ensuring a stable supply of high-quality needle coke. The production of needle coke is a complex and expensive process, and there is a limited number of manufacturers worldwide. As a result, the cost of graphite electrodes can vary greatly depending on the availability and cost of needle coke.
In recent years, the graphite electrode industry has experienced significant fluctuations in price and demand due to factors such as changes in the global steel market, the closure of some needle coke plants, and the emergence of new EAF technology. Despite these challenges, the demand for graphite electrodes is expected to remain strong as the global steel industry continues to grow and evolve.
In conclusion, graphite electrodes are an essential component in the production of high-quality steel and other metals. Their unique properties make them ideal for use in EAFs, and their manufacture requires a complex and specialized process. Although there are challenges in the industry, the demand for graphite electrodes is expected to remain strong, and the industry will continue to evolve and innovate to meet the changing needs of the global metalworking industry.
We are a graphite electrode supplier. If you are interested in our products, please contact us now!