Types of refractories

There are many kinds of refractories, usually divided into ordinary refractories (1580 ~ 1770 ° C), advanced refractories (1770 ~ 2000 ° C) and extra grade refractories (above 2000 ° C) according to the refractoriness; According to chemical characteristics, it is divided into acid refractory, neutral refractory and alkaline refractory. In addition, there are refractory materials for special occasions.

The definition of refractories now depends not only on whether the refractoriness is above 1580 ° C. At present, refractories generally refer to inorganic non-metallic materials used in the lining of metallurgical, petrochemical, cement, ceramics and other production equipment.