The organizational structure of refractory materials

Influence of refractory materials under various physical, chemical interaction in high temperature in the process of using, produce corrosion, wear or crack damage. Therefore, the chemical composition is the basic characteristics of refractory materials; the main components are the basic characteristics of refractory material, so the composition and quantity directly determines the performance of refractory materials.

Refractory products at the same time, mineral composition, product nature is the comprehensive reflection of mineral composition and microstructure, therefore can not only from the chemical composition analysis of the effect on the properties of products. Refractory mineral composition and depends on the chemical composition and process conditions. Although the same chemical composition. If the different processing conditions. The formation of amorphous phase, the number and types of minerals will also have the difference, the performance of refractory materials are also different. However, it must be stressed that the refractory material macro organizational structure is an important factor which influences the use performance, and the performance index can reflect the inner structure of refractory products.

For example: the degree indicates the nature of dense – porosity, bulk density, true density; said gas-permeable nature of the degree of difficulty – Porosity: indicates the nature of the thermal properties – the linear expansion coefficient, thermal conductivity, heat capacity, and temperature conductivity; indicates the nature of the mechanical properties – normal and high temperature compressive strength, high temperature flexural strength, high temperature torsional strength, high temperature creep resistance and modulus of elasticity; said high-temperature performance of a – refractoriness, high temperature load softening temperature , High temperature volume stability, thermal shock resistance and slag resistance.