Refractory soil or clay is classified into two categories, alumino-silicon and aluminum, depending on the amount of materials used in its production. Another type of classification of refractory soil is based on its melting temperature, which divides it into three categories:
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Zod Gadaz refractory soil is composed of morillonite raw materials, quartz impurities, carbonates and hydrosilite. In addition, the presence of a small amount of aluminum oxide has reduced the ability to withstand high temperatures in this soil.
☑️ Late soil
Unlike Zod Godar refractory soil, this soil has some halloysite, kaolinite, hydrosilites and monothermite, which increases the high temperature tolerance of this soil.
☑️ Refractory soil
This type of single mineral soil is kaolinite; Of course, it also has some quartz and carbonate. For this reason, this soil is also called pure refractory soil. Of course, there may be very small amounts of quartz and carbonate in this soil, which can be completely ignored.