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File: /home/castref/public_html/en/index.php
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USEGA AREAS

What is Refractory Material?

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    19/Nisan/2023
  • castref metal refrakter

 

   Refractory materials are very sensitive to extreme temperatures. These fire and high temperature resistant materials are used for furnaces, incinerators and reactors and can also be used to make crucibles and molds in glass and metal casting. Today, the iron and steel industry uses approximately 65-70% of all refractories produced. 

WHAT ARE THE REQUIRED PROPERTIES FOR REFRACTORY MATERIALS? 

   Refractory materials must be chemically and physically stable at high temperatures which means:

  •  High thermal shock resistance
  •  Low coefficient of thermal expansion
  •  Stable thermal conductivity depending on application temperature 
  •  Corrosion resistance 

No interaction with metal vapor, hot gases, molten metal or slag that may arise as a result of heating or melting 

Such properties are of great importance for refractory materials. Alumina, silica, magnesite, calcium oxide (lime) are common refractory materials. 

ADVANTAGES OF REFRACTORY MATERIALS:

  • High durability and performance 
  • Long service life 
  • High temperatures thermal shock 
  • High corrosion resistance 

REFRACTORY MATERIAL TYPES

 Based on the chemical composition:

 Acidic: Silica, Mullite, Zircon, Chamotte

 Basic: Magnesium oxide (MgO) is a very common example, Dolomite, Forsterite … 

 Neutral: Chemically stable for both acids and bases, Bauxite, Alumina, Cr2O3 (chromite), Carbon (pitch, graphite, tar)



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CASTREF METAL REFRAKTER SANAYİ

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