graphite electrode for iron melting lf eaf

Pubdate: 07-09 2021

What are the types of impregnated graphite electrode for iron melting lf eaf preheating furnace?

graphite electrode for iron melting lf eaf

(1) Simple graphite electrode for iron melting lf eaf preheating furnace. The structure of this kind of preheating furnace is relatively simple, divided into above-ground preheating furnace and underground preheating furnace, the heating medium is the flue gas produced after the combustion of coal gas. This type of preheating furnace for impregnating graphite electrode for iron melting lf eaf has the disadvantages of uneven heating temperature and high energy consumption. The temperature difference in the preheating furnace is sometimes as high as 120-180℃. Some carbon billets are overheated and oxidized, and some The carbon billet is not preheated to the specified temperature, which affects the quality of impregnation. ?

(2) Direct heating type graphite electrode for iron melting lf eaf preheating furnace. An adjustable high-speed gas nozzle is used to directly generate high-temperature flame gas on the preheating furnace, and the nozzle is installed in the middle of the distance between the vault and the upper part of the charcoal basket. The high-temperature flame gas sprayed by the nozzle has a large kinetic energy, which produces a strong entrainment and stirring effect on the airflow in the furnace. The flame gas forms a good circulation around the charcoal basket, so as to achieve the purpose of equalizing the temperature in the furnace and make the furnace The temperature difference everywhere drops to within 30°C. The preheating furnace is operated under slight positive pressure, and a secondary circulation system of flame gas can be added, which is completed by a high-temperature fan, so that part of the exhaust gas discharged from the preheating furnace is used as secondary circulating air.

(3) Hot air preheating furnace. Firing graphite electrode for iron melting lf eaf carbon billet is preheated by hot air in a large-size single-door pot preheating furnace. The hot air for preheating graphite electrode for iron melting lf eaf carbon billet is set in the preheating furnace. The gas burner on the upper frame of the heating furnace is produced by burning gas in the combustion chamber. The hot air generated in the combustion chamber is driven in from the top of the preheating furnace, and several axial flow units are installed on the top of the preheating furnace. Type agitating fan to preheat the hot air circulation of the carbon billet. Another type of hot air preheating furnace is a tunnel type. The graphite electrode for iron melting lf eaf is fed into the furnace. The carbon billet is heated by the hot air generated by the combustion of coal gas in the hot air generator. The hot air is heated from both sides of the furnace. The hot air blowing inlet is dispersed and fed, so that the carbon billet in the furnace can be evenly heated.

[Electrode paste, many people choose CGM carbon] CGM was established in 1992 and has developed into a large-scale carbon production enterprise with an annual output of 200,000 tons of electrode paste and 250,000 tons of forged coke. In the development process of CGM Carbon, we have experienced many difficulties and detours. However, with the basic concept of honest management, CGM Carbon has grown stronger. CGM carbon products are not only sold domestically, but also exported to Indonesia, foreign countries and other countries, and are recognized and praised by the international market.

[Electrode paste, why we do it better] There are 500 electrode paste manufacturers nationwide, and there are more than 100 manufacturers with a scale of more than 10,000 tons. In so many electrode paste production plants, why is CGM carbon in the production scale? Do better in terms of word of mouth. This starts with the development history of CGM Carbon. CGM Carbon was established in 1992 and was initially a carbon enterprise with petroleum coke calcination as its main business. In 2006, the CGM carbon electrode paste production line was put into operation. The production of electrode paste requires heat to soften and shape the raw materials. The general electrode paste factory needs a gas generator in this process, and in time, it also needs more expensive natural gas after coal is changed to gas. However, because our calcined coke production line can release a lot of spare heat, and this heat is just used by the electrode paste production line. Therefore, compared to more general electrode paste manufacturers, we have already saved a lot of costs in terms of heat generation.

[Purchase of electrode paste, please be cautious when encountering these problems] The threshold for the production of electrode paste in the leather bag company is relatively high. First of all, environmental issues. Without an environmental assessment report, it is impossible to produce an electrode paste factory; secondly, it is a cost issue. , Even if a non-CNC production line, the cost of an electrode paste processing line is still tens of millions. Not to mention other raw materials and technical costs. So not everyone can afford the electrode paste business casually. Therefore, there are many trading companies on the market that sell electrode paste under the name of the factory, but they have no production capability, let alone after-sales service. The price is also often very low, and when it is sold, it is shoddy. Therefore, when purchasing electrode paste, you must check the strength of the factory and beware of being deceived. Our company has encountered many such customers.

[Physical and chemical indicators of electrode paste] Resistance: <65 Ash content: <5% volatilization: 10.0-15.0 Density: >1.3 Pressure coefficient: > Ductility: 6-20 Shape: egg pill, trapezoid, cylinder. Packing: Ton bag or export packing. According to customer requirements. Note: The parameter is the limit value reached by our factory. Please call us for details.

[Electrode paste, the highest quality raw materials create the highest quality products] The success of CGM carbon electrode paste is that advanced equipment and excellent technology are indispensable factors. Of course, there are other factors that add to the improvement of CGM quality. . As we all know, electric forging coal is the aggregate of electrode paste, and the quality of electric forging coal directly affects the use effect of electrode paste. CGM carbon electrode paste uses authentic Ningxia Taixi coal, which has low volatility, low ash content, high carbon content, low resistance and high hardness. It is a natural raw material for electrode paste. The carbon content of Taixi coal is 20% higher than that of Shanxi anthracite, and the price is 30% higher. Ningxia Taixi Coal has been known as black gold since ancient times.

[Electrode paste, CGM carbon can meet huge orders] This true story happened in a large alloy group factory in Shandong. One day, a dealer came to us and said that 12,000 tons of electrode paste are needed every year. We didn’t believe it at first, but after detailed communication, we learned that he is the owner of a small electrode paste factory in Shandong because he signed a contract with a group company in Shandong for two per year. For a 10,000-ton order, his own factory has a maximum annual output of only 8,000 tons, and the remaining 12,000 tons must be cooperated with the factory. With an annual output of 200,000 tons of electrode paste, CGM Carbon still has a margin of 12,000 tons. Therefore, not all orders can be eaten by the factories on the market, but CGM carbon is different. CGM carbon electrode paste can meet the needs of the group company’s electrode paste.

[Electrode paste, CGM carbon makes the world without submerged arc furnace accidents] According to statistics, in all submerged arc furnace accidents, 20% are electrode paste problems, and 30% are caused by workers. The quality of our electrode paste can allow customers to avoid these 20% of the problems, and the after-sales service of our factory engineers can provide free training to the workers, allowing the factory to avoid the remaining 30% of the problems.

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