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Temperature Requirements for Bricks Used in Industrial Kiln Factory
Summary:
What are the requirements for temperature in the production of kiln bricks? Are we all ambiguous as in industrial kiln factories? In the production process of kiln bricks, the autoclaved aerated block control stage occupies a very important position. High temperature and high pressure steam curing can remove the free water in the kiln bricks, and the green particles are compressed and close to each other, which can reduce the thermal expansion damage caused by rapid evaporation of water. 1, heating stage in the premise of ensuring that the kiln brick is not affected by steam, the heating time should be as short as possible, as long as the continuous and uniform into the curing chamber steam 1.0~1.5 hours. 2, constant temperature stage constant temperature stage is blank
What are the requirements for temperature in the production of kiln bricks? Are you as ambiguous as the industrial kiln factory?
In the process of making bricks for kilns, the autoclaved aerated block control stage occupies a very important position. High temperature and high pressure steam curing can remove the free water in the bricks for kilns, and the particles of the bricks are compressed and close to each other, which can reduce the thermal expansion damage caused by the rapid evaporation of water.
1. Warming phase
Under the premise of ensuring that the brick blank for kiln is not affected by steam, the heating time should be shortened as much as possible, as long as the steam is continuously and evenly fed into the curing chamber for 1.0 to 1.5 hours.
2. Constant temperature stage
The constant temperature stage is an important stage of strength growth due to hydration and hydrothermal synthesis of the body. With the extension of constant temperature time, more and more hydrates, strength growth is more and more fast. But after the constant temperature reaches a certain time, the strength growth begins to slow down. Different raw material ratio, different production process, the production of aerated billet, have a corresponding to the best constant temperature time. For example, under the hot and humid conditions of 96~100 ℃, the constant temperature time is 8 hours in spring and autumn, 7 hours in summer and 10 hours in winter. During the cooling stage, when the production volume is large and the space in the curing room is not enough, the door of the curing room should be opened and rapid cooling should be adopted, which will lead to temperature difference stress between the brick surface of the kiln, pulling the surface layer and easily forming micro cracks. Therefore, it is necessary to control the cooling rate, every 30 minutes of cooling should not exceed 10 ℃; the temperature difference between the inside and outside of the curing room is not more than 30 ℃, and the bricks used in the finished kiln can leave the room.
Key words:
Metallurgical
Zhongke
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