2024-04-01 14:48:19
The main performance of a kiln is mainly determined by the technical performance of refractory materials. The quality of refractory materials directly affects the investment cost, working performance, thermal efficiency, and energy consumption cost of the kiln. How to choose refractory materials for the kiln is a problem that we need to pay attention to when purchasing.
General principles for selecting refractory materials:
1. The performance and thermal characteristics of kilns. Kilns that work intermittently should use materials with low heat capacity. The selection of refractory materials based on the usage characteristics and environment of the kiln is crucial for the stable operation of the kiln. Improper selection of refractory materials can greatly shorten the lifespan of the kiln, and at the same time, the kiln may not have good stability during operation, leading to deformation and affecting the progress of the kiln.
2. The safe operating temperature, thermal conductivity system, high temperature strength, and chemical stability of materials. When selecting refractory materials for kilns, the above physical and chemical indicators are the basic properties of refractory materials, which indirectly reflect the quality of refractory materials. Therefore, when selecting, it is necessary to examine their physical and chemical indicators.
3. The lifespan of use. The service life of refractory materials is the key factor affecting the service life of high-temperature kilns. When selecting, it is necessary to conduct preliminary samples of refractory materials. Only when they are qualified can they be selected to ensure the overall service life.
4. Investment costs and operational maintenance costs. When selecting refractory materials, it is important to have an understanding of the overall project budget and refractory material prices. In addition to ensuring project quality, it is also important to avoid exceeding costs. For example, in the selection of high alumina bricks, if secondary high alumina bricks are sufficient, there is no need to choose primary high alumina bricks.
In the selection of refractory materials for high-temperature kilns, generally speaking, heavy refractory materials focus more on a certain technical performance index, such as high temperature stability, chemical stability, etc; Lightweight insulation materials pay more attention to the comprehensive technical and economic indicators of investment and operation. So when choosing refractory materials, we must make a reasonable selection based on the environment used and the characteristics of the kiln.
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