Unshaped refractory materials, also known as bulk refractory materials, are a new type of furnace building materials. They are made of refractory aggregates and powders with a certain particle size distribution, binders, and additives. They do not need to go through the molding and firing process and can be used directly. The following are several common types of unshaped refractory materials:
Castables: materials with good fluidity after adding water and stirring, suitable for the lining of various heat treatment furnaces, ore roasting furnaces, etc.
Plastic: plastic mud or mud blanks, suitable for the lining of thermal equipment such as soaking furnaces and heating furnaces.
Gunning material: Refractory mixture for gunning or spraying by a jet machine, suitable for the lining of integral steel ladle.
Refractory coating: Material applied to refractory brick lining, mainly used as protective coating for the lining of various thermal equipment.
Ramming material: Bulk refractory material with extremely low plasticity or no plasticity, suitable for the lining of smelting furnaces and containers for high-temperature molten metal.
Projectile: semi-dry mud material projected by a projector for lining, mainly used for building integral steel drum lining.
Dry mix: amorphous refractory material constructed in a dry state by vibration or ramming.
These materials have been widely used in modern industry due to their simple process, low cost, and easy mechanized construction.