AOD converter smelting system basically consists of several parts such as furnace system, gas source device, dust removal system, material supply system and so on. A complete furnace system is a complex linkage including furnace body, drag ring, tilting mechanism, suspension system. The following figure is a typical early AOD converter furnace. Furnace body is …
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Electric Stove The electric furnace steelmaking method mainly utilizes electric arc heat, and in the electric arc action area, the temperature is as high as 4000℃. Smelting process is generally divided into melting period, oxidation period and reduction period, in the furnace can not only cause oxidizing atmosphere, but also can cause reducing atmosphere, so …
Improving the performance and service life of corundum castables is an important issue in the field of refractory research. 1.Basic characteristics of corundum castables Corundum castable is a high-performance refractory material made of alumina (Al2O3) as the main raw material through high-temperature firing. It has excellent properties such as high melting point (2050℃), high hardness, …
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The basic principle of the AOD method is the use of gas dilution method, so that the CO partial pressure is reduced. High-pressure argon and oxygen gas mixture blown into the molten steel and bubbles and slag contact opportunities to increase, conducive to carbon, sulfur, non-metallic inclusions, such as the rapid removal. In the smelting …
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Steel production due to a variety of furnace working environment and service performance is not the same, so the refractory requirements are different. Refractories for AOD furnaces Since 1968, the American Joslin company invented the AOD steel refining method, since its application has been, has been rapidly popularized. So far, AOD steel refining method has …
Selection of refractories for various refining furnace ladle walls Read More »
Medium frequency furnace furnace use process of various processes on the service life of the furnace is also quite important, a variety of improper operation may reduce the service life of the furnace. Therefore, in the use of the process should pay attention to the following points: 1. in the use of medium frequency furnace, …
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Bake the furnace for a period of time, the shutdown is not good to start Failure phenomenon: for the new melting furnace or knotting of the transmittance furnace, at the beginning of the baking furnace can be started, the voltage can be increased to reach the maximum value, but baking furnace after a period of …
Medium frequency furnace 6 common fault analysis and treatment Read More »
The quality of high alumina bricks to improve , no more than high-pressure molding, high-temperature sintering. However, in the production process, it is necessary to start from the source, in order to better ensure the stability of the quality of the product. High-alumina bricks are divided into one, two or three levels High-aluminum bricks are …
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Steel ladle refractory materials for liquid steel quality and temperature drop of the impact is multifaceted, based on this reality, in the use of steel ladle link, should be scientifically adjusted refractory material categories and ratios to ensure that its role is reasonable and effective to play for the subsequent production operations to create a …
Influence of ladle refractories on the quality and temperature drop of molten steel Read More »
Waste magnesium carbon brick refractory materials regeneration brick-making technology Iron and steel production needs to consume a large number of magnesium-carbon bricks, for the regeneration of magnesium-carbon refractory materials after use provides an outlet, so the regeneration of magnesium-carbon refractory materials after use of the brick technology has become the focus of the development of …
Two recycling methods for waste magnesia carbon bricks Read More »
High alumina brick is a commonly used refractory material, the main component of which is alumina (Al₂O₃). Its alumina content is usually above 48%. According to the different alumina content, it can be divided into multiple grades, such as special grade, first grade, second grade, third grade, etc. High alumina brick has many excellent properties. …
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Refractory materials belong to is a large piece of industrial goods, transportation, often using logistics, freight or rail transportation, and in the process of loading and unloading is not like treating glass, porcelain, etc. so careful, and generally will not have a special thickening of the soft packaging for protection, which inevitably leads to damage …
How to define refractory bricks with missing corners and edges, cracks and melt holes? Read More »
Refractory castables, as an indispensable refractory material, have strength characteristics that are directly related to their quality and performance. In many industrial fields, such as metallurgy, cement production, glass manufacturing and chemical industry, castables play a pivotal role. Therefore, the research and development of high-performance castables is particularly important. It is especially worth mentioning that …
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Refractory bricks and refractory mortar (1) The working conditions of the mud in the joints of refractory masonry bricks are exactly the same as those of refractory bricks. Therefore, the main technical indicators of the two, refractoriness and chemical composition, should also be the same or compatible. (2) The type and brand of mud should …
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With the continuous acceleration of the industrialization process and the rapid growth of the economy, refractory materials, as key industrial raw materials, play a vital role in the field of high-temperature industry. In the process of widespread use and large-scale production of refractory materials, the environmental problems caused by waste refractory materials have become increasingly …
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Refractory aggregates and refractory powders in refractory castables are collectively referred to as main raw materials, and the rest are called secondary raw materials. Refractory aggregates are the +0.088mm or +0.1mm part of refractory castables. They are the main material in the organizational structure of refractory castables and play a skeleton role. Therefore, refractory aggregates …
7 kinds of corundum refractory raw materials commonly used in refractory castables Read More »
We have shared the construction methods of refractory castables in many articles in the past, including blast furnaces, circulating fluidized bed boilers, etc. Today, taking the second-stage converter in the petrochemical industry as an example, we will briefly share the construction of refractory castables for converters. The construction of refractory castables for the second-stage converter …
With the development of new dry cement production technology, the corresponding refractory materials have also developed greatly. In addition to the breakthrough of conventional refractory bricks, the performance of fire -resistant pouring materials is also more and more complete, and it is widely used in the irregular parts in the kiln. As we all know, …
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Refractory bricks are an important refractory material, widely used in various high-temperature industrial furnaces. For those who are not familiar with the refractory industry, they may think that refractory bricks are only square in shape, but in fact, there are many types of refractory bricks. In terms of material, the most commonly used refractory bricks …
Several common refractory bricks in the refractory industry Read More »
Aluminum-magnesium refractory castable is a cutting-edge lining product that is currently widely used in ladles. Refractory material workers at home and abroad have done a lot of work on aluminum-magnesium castables, mainly introducing the factors affecting the performance of aluminum-magnesium castables from several aspects such as aggregate, magnesia, corundum fine powder and powder, and silica …
