There are many kinds of refractory materials, usually divided into ordinary refractory materials (1580～1770°C), advanced refractory materials (1770～2000°C) and special refractory materials (above 2000°C) according to the degree of refractoriness; Neutral refractory and alkaline refractory; according to mineral composition can be divided into silica, aluminosilicate, magnesia, dolomite, olivine, spinel, carbonaceous, zirconium-containing fire Materials and special refractory materials; according to the manufacturing method can be divided into natural ores and artificial products; according to their shape can be divided into block products and amorphous refractory materials; according to heat treatment methods can be divided into non-burned products, fired products and cast products; According to the degree of refractoriness, it can be divided into ordinary refractory materials, advanced refractory materials and special refractory materials; according to chemical properties, it can be divided into acidic refractory materials, neutral refractories and basic refractories; according to its density, it can be divided into lightweight refractories and weights. Refractory materials; according to the shape and size of the products can be divided into standard bricks, shaped bricks, special bricks, pipes and refractory utensils; can also be divided into blast furnace, cement kiln, glass kiln, ceramic kiln according to its application use
Now the definition of refractory material has not only depended on whether the refractoriness is above 1580 °C. At present, refractory materials generally refer to inorganic non-metallic materials used in the lining of production equipment such as metallurgy, petrochemical, cement, ceramics, etc.
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