- Time:Apr 23, 2023
Alkaline refractory is a special kind of refractory. Alkaline refractory is a kind of special refractory specially used for high-temperature equipment and industrial furnaces in alkaline medium environment. According to the different chemical composition and structural form, it can be divided into the following types of refractory materials. The following is a detailed introduction to the classification of basic refractory materials.
one. Classification method of basic refractories
1. Classification according to chemical composition
According to the different main chemical components, basic refractory materials can be divided into magnesium oxide, magnesium aluminum, silicate, phosphate and so on.
2. Classification according to the structure
According to different physical structures, basic refractory materials can be divided into ordinary basic refractory materials, microcrystalline basic refractory materials, fiber basic refractory materials, etc.
two. Classification of basic refractories
1. Magnesium oxide basic refractories
Magnesium oxide basic refractories are mainly made of magnesium oxide, and are usually used in high-temperature equipment and furnaces in iron and steel metallurgy, cement, glass, ceramics and other industries. It has excellent alkali corrosion resistance and high temperature stability.
2. Magnesium-aluminum basic refractories
It is made of magnesia, alumina and other additives in a certain proportion. It has good corrosion resistance and mechanical strength. It is suitable for high-temperature equipment and kilns in electrolytic aluminum and zircon industries.
3. Magnesia basic refractory material
It is made from natural or processed magnesia through crushing, mixing, molding, drying and sintering processes. It is widely used in high-temperature equipment and kilns in the fields of iron and steel metallurgy, non-metallic materials, and building materials.
4. Silicate alkaline refractories
It is mainly made of silicate minerals, such as feldspar, clay, talc, etc., and is made through crushing, mixing, molding, drying and sintering processes. It is suitable for high-temperature equipment and kilns in cement, glass, ceramics and other industries.
5. Phosphate alkaline refractories
It is mainly made of phosphate minerals, such as fluoroapatite, tripolyphosphoric acid, etc., and a certain amount of clay, kaolin, etc. are added, and it is made through molding, drying, and sintering processes. It is suitable for iron and steel metallurgy, acid-resistant industries, etc. High temperature equipment and kilns.
The above is the classification of common basic refractory materials. Different types of refractory materials have different chemical compositions and structural forms, and should be selected according to specific working conditions and use environments.
