title: Refractory
text: A refractory is a material that can stand high temperature. It is used in furnaces, kilns, incinerators and reactors. Materials to make refractory must be chemically and physically stable at high temperature, such as alumina, silica, magnesia and lime.
  
  Types of refractory
  
  Based on material
   Acidic refractory
   Neutral refractory
   Basic refractory
  
  Based on ways to manufacture
   Dry press process
   Fused cast
   Hand molded
   Formed
   Unformed
   Unformed dry vibratable
  
  Based on operating temperature
   Normal refractory
   High refractory
   Super refractory
  
  Materials