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What is the main function of refractory materials for heating furnace lining?
Keywords: anti-corrosion carbon bricks
Release time:
2024-07-01 09:55
Source:
The main function of a heating furnace is to heat the billets (small billets, large billets, slabs, and steel ingots) to a rolling temperature of 1000-1250 ℃ until they have sufficient plasticity, so that the temperature can also be changed through a hot rolling machine. According to the metallurgical properties and productivity of raw materials, the heating rate of the heating furnace must also meet specific requirements and goals. During the treatment process of the heating furnace, the material flow continuously runs through the heating furnace, thereby heating the raw materials to a certain temperature,
Heating furnaces are divided into continuous heating furnaces, pusher type heating furnaces, regenerative heating furnaces, and roller bottom heating furnaces. Select a suitable heating furnace type based on different heating capabilities, material grades, and material shapes. The heating furnace used for metal heat treatment is also known as a heat treatment furnace. The heating furnace before the initial rolling of the steel ingot or the heating furnace that homogenizes the internal temperature of the steel ingot is called a soaking furnace.
The heating furnace mainly consists of a heat storage chamber insulated with refractory materials (dense insulation materials), a furnace supporting and transporting heating elements, a furnace body, and a heat recovery system. The heating furnace uses oil, natural gas, electricity, and coal as the main fuels as the heat source. The temperature and pressure of the furnace can be controlled automatically, but manual control can also be used.
Refractory materials play an important role in controlling energy consumption and improving the efficiency of heating furnaces. The service life of refractory lining and the production efficiency of heating furnace largely depend on the correct selection of refractory materials, the design results of refractory materials, and the precise masonry method.
The function of the refractory lining of the heating furnace is to prevent heat loss of the furnace body, ensure a lower surface temperature outside the heating furnace body, and meet the safe working conditions around the heating furnace body, thereby helping to achieve the target of unit fuel consumption. The design structure of refractory materials also fully considers the issue of minimizing heat loss on the side walls, furnace top, and furnace bottom to the greatest extent possible.
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