During the process of heating and temperature increase, minerals may undergo dehydration, dehydroxylation, combustion, decomposition, sublimation, crystallization, phase change, and melting, causing changes in the composition and structure of the minerals, as well as corresponding changes in their physical and chemical properties. Heat resistance refers to the ability of a mineral or product to maintain the stability of its composition, structure, and physical and chemical properties under the action of heat. The higher the temperature at which the mineral undergoes the above changes, the better its heat resistance. These changes can be determined through the analysis of the composition and structure of minerals. As mentioned above, we can also use thermal analysis to detect the thermal effects of minerals and study the heat resistance of minerals under certain temperature conditions (usually < 1300 °C).