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 »

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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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 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 …

Requirements for refractory mortar in refractory brick masonry Read More »

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 …

Research on recycling and resource utilization technology of refractory brick materials Read More »

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 …

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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 »

1.What is the role of continuous casting slag? During the pouring process, powdered or granular slag is continuously added to the surface of the molten steel in the crystallizer, which is called protective slag. The functions of protective slag are as follows: (1) Insulation and heat preservation to prevent heat dissipation; (2) Isolation of air …

Function and influencing factors of continuous casting mold powder Read More »

Heating furnace is a thermal equipment used to heat steel billets or small ingots during steel rolling or forging, and its operating temperature is generally 1300~1400℃. With the large-scale and high-efficiency of rolling mills, higher requirements are put forward for heating furnaces. Its development trend is large-scale, low-consumption, pollution-free and automated operation, and the furnace …

Types of refractory materials used in various parts of reheating furnaces Read More »