- Time:Jun 20, 2023
The cement kiln needs to be baked after the whole kiln brick replacement. The following is a common cement kiln kiln after brick replacement kiln kiln requirements:
1, drying stage requirements: After the completion of brick exchange in the whole kiln, it is necessary to carry out the initial drying treatment of the masonry to avoid the cracking of the brick due to the evaporation of water when heating up. Generally, the low temperature drying method is used to gradually increase the temperature in the cement kiln to about 50-100℃, and a certain dry shell layer is formed on the surface of the masonry.
2, heating stage requirements: After the initial drying of masonry, formal heating baking can begin. The baking temperature and time should be determined according to the characteristics of different types of cement kilns and masonry materials, usually the baking temperature is 800-1200 ° C, and the duration is 5-10 days.
3, heat preservation and cooling stage requirements: after reaching the highest baking temperature, it is necessary to carry out heat preservation treatment on the kiln, so that its internal temperature slowly drops below the ambient temperature. This process usually takes several days, depending on factors such as kiln size and masonry thickness.
4. Cooling requirements of kiln shell: After the whole baking process, it is necessary to cool the cement kiln to avoid cracking of the brick due to sudden cooling. Cooling methods are generally divided into natural cooling and forced cooling, which are determined according to the size of the kiln body and the kiln process.
In short, in the kiln baking process after the cement kiln brick replacement, it is necessary to pay attention to the control of the temperature and time of the kiln, and carry out appropriate heat preservation and cooling treatment to ensure that the masonry can maintain stable and reliable performance at high temperatures. At the same time, it is also necessary to strengthen monitoring and maintenance, timely detection and treatment of problems that may affect production, such as brick shedding, crack expansion, etc.
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