Overview of refractory brick
Refractory brick is an inorganic non-metallic material specially designed to withstand high temperature environment, mainly used for lining of high temperature industrial kilns. They are able to maintain their structural integrity at extremely high temperatures and prevent the furnace material from being damaged by high temperature.

Application of refractory brick
Refractory brick is widely used in various high temperature industrial processes, such as ironmaking, steelmaking, casting, etc. In these processes, refractory brick is used as the lining of the furnace body to protect the furnace body from erosion and damage by high temperature molten substances.

Characteristics of refractory brick
Refractory brick has the following characteristics:

High temperature resistance: able to withstand high temperature above 1700 degrees.

Corrosion resistance: able to resist erosion by high temperature molten substances.

Abrasion resistance: can still maintain good mechanical strength in high temperature environment.

Resistant to thermal shock: the strength of refractory brick should remain good under rapid temperature changes.
Classification of refractory brick
Refractory brick can be divided into many types according to its raw materials and uses, including but not limited to:

Natural refractory brick: made of natural materials such as silica, quartz, diatomaceous earth, etc.
Synthetic refractory bricks: made of artificial synthetic materials such as magnesium aluminum spinel and zirconium mullite.
High alumina bricks, clay bricks, insulation bricks, refractory castables, etc.
Manufacturing process of refractory bricks
The manufacturing process of refractory bricks mainly includes the following steps:

Raw material preparation: Select suitable raw materials and carry out necessary treatment, such as purification, calcination, etc.
Mixing: Mix the raw materials in a certain proportion to ensure uniformity.
Molding: Select appropriate molding methods according to the product structure, such as machine pressing molding, vibration molding, etc.
Drying: Remove moisture from the blank to prevent cracks during firing.
Firing: Firing in a high-temperature kiln to form a stable crystal structure for the blank.
Finished product inspection: Quality inspection of the finished product to ensure that it meets the standard requirements.
Packaging and shipment: Pack and ship qualified products.
Conclusion
Refractory bricks are an important industrial material. Their unique high-temperature properties make them play an irreplaceable role in high-temperature industrial processes. By understanding its basic concepts, applications, properties and manufacturing processes, we can better appreciate the importance of this material and its wide range of applications in modern industry.