The working principle of shaped refractory materials mainly includes their physical and chemical properties and performance in high temperature environment.
Physical and chemical properties
Refractory materials refer to those materials that can still maintain their physical and chemical properties in high temperature environment. Its refractoriness is usually not less than 1580℃, which means that under no load, the refractory materials can withstand high temperature without softening or melting. In addition, refractory materials also have good resistance to thermal shock and chemical corrosion, which make them perform well in various industrial applications.
Preparation process
The preparation process of shaped refractory materials usually includes the following steps:
Raw material processing: including crushing, fine grinding, screening, batching, mixing, molding, etc. of raw materials. Crushing of raw materials is the key step, and the block material is reduced to the required particle size through coarse crushing, medium crushing and fine crushing.
Molding: There are many molding methods, including grouting molding, plastic molding, machine pressing molding and melt casting molding. Mechanical pressing is the most commonly used method, which uses high pressure to press the clay into a dense green body.
Drying and firing: The green body after forming needs to be dried and fired to remove moisture and form the final refractory product.
