Is a type of refractory material primarily used in the lining of induction furnaces for the melting of steel and other metals. It is made from high-purity silica (SiO₂) in the form of finely crushed particles, carefully graded and mixed without any binder.
Key Features:
High Purity: Contains over 98–99% silica.
Thermal Stability: Can withstand very high temperatures.
Acidic Nature: Suitable for acidic lining applications.
High Wear Resistance: Prolongs the life of furnace lining.
Low Thermal Conductivity: Helps in energy efficiency.
Applications:
Mainly used in induction furnaces for steel and non-ferrous metal melting.
Also used in foundries and casting industries.
Advantages:
Improves furnace life due to its high refractoriness.
Reduces power consumption during melting.
Prevents contamination of molten metal.
Easy to install and maintain.
Types:
Premixed Ramming Mass: Mixed with a binder or boric acid.
Ordinary Ramming Mass: Requires mixing before use.