What are refractory bricks?

What are refractory bricks? Refractory Brick Types Introduction

Do you have some questions about refractory bricks? what are refractory bricks and how many types of bricks are there? In this article, Fireramo summarizes in detail the definition of refractory bricks, the types of refractory bricks and the main areas of application of the different types of refractory bricks.

What are refractory bricks?

Refractory bricks, also known as “furnace bricks”, are bricks that can withstand high temperatures without melting or decomposing. These tiles are made of refractory clay, quartz, cellulose, asbestos, and other materials, and the refractory materials used vary from one type of refractory tile to another.

Because of the different raw materials, the specific properties and applications of different refractory bricks vary, but they are usually characterized by their ability to maintain their shape, strength and stability at very high temperatures. Refractory bricks are mainly used to construct and repair smelting kilns, ovens, boilers and other equipment in high temperature environments.

The main use of refractory bricks is as a lining material for high-temperature industrial equipment, including steel furnaces, iron furnaces, glass kilns, cement kilns, pizza ovens, and more. These bricks effectively insulate the furnace from high temperatures, protect the structure body from overheating, and also improve energy efficiency as they have better insulation properties.

Types of Refractory Bricks

Types of refractory bricks can be differentiated by their use, for example, refractory bricks for steel making, refractory bricks for cement kilns, refractory bricks for glass kilns, refractory bricks for the aluminum industry etc. It can also be classified according to the material of refractory bricks, usually we are divided into Fireclay bricks, aluminum bricks, magnesium bricks, carbon bricks, corundum bricks and so on. Here we introduce the types of refractory bricks from the material of refractory bricks.

Fireclay bricks

Fireclay bricks are mainly made of refractory clay and are usually used in the construction of ovens and heat treatment equipment. Fireclay refractory bricks have good thermal shock resistance and mechanical strength, but are less resistant to erosion. Fire clay bricks are a cost-effective and widely used refractory brick.

Aluminum Refractory Bricks

Aluminum refractory bricks contain a high amount of aluminum oxides, usually more than 48%, and are also known as high alumina bricks. These bricks have good refractoriness and resistance to thermal shock and are widely used in high temperature furnaces in metallurgy, chemical and building materials industries.

High-alumina bricks are superior to Fireclay bricks in terms of performance and use, but they are also relatively expensive. High-alumina bricks have a higher aluminum content and are used in a wider range of applications. Common types of high alumina bricks include low creep high alumina bricks, anti-spalling high alumina bricks, and phosphate high alumina bricks.

Magnesia refractory bricks

Magnesia bricks are refractory materials made by processing under electric arc or high temperature. Common magnesium refractory materials include magnesium carbon refractory bricks and magnesium aluminum refractory bricks.

Carbon refractory bricks

Carbon bricks are made of graphite and coke as the main raw materials, which have excellent oxidation resistance and thermal conductivity. Common carbon refractory bricks include graphite cathode block and graphite anode block.

Silica Refractory Bricks

Silica bricks are mainly made of silicate minerals (e.g., silica, feldspar) and have good heat and chemical resistance. Silicate refractory bricks are commonly used in the construction of chemical furnaces and glass melting furnaces.

Corundum Refractory Brick

Corundum bricks are a kind of advanced refractory material, mainly composed of alumina and silicon oxide, with extremely high heat and erosion resistance. Common types of corundum refractory bricks include white corundum, brown corundum, zirconia corundum, corundum mullite and others.

Zircon refractory bricks

Zircon brick is a kind of refractory brick made of zircon as the main raw material. It has high slag resistance, alkali resistance and abrasion resistance, and is suitable for all kinds of high-temperature furnaces, kilns and thermal equipment. Common zircon refractory bricks include zirconia zirconia brick, zirconia mullite brick, zirconia corundum brick and so on.

Alkaline earth refractory bricks

This kind of refractory bricks take magnesia and dolomite as the main raw materials, which have excellent slag resistance and high-temperature structural stability. Therefore, they are usually used in steel furnaces, glass furnaces and other equipment.

See here you may have a clear concept of refractory bricks and types of refractory bricks, if you still have questions, feel free to contact us to get a professional answer service. If you are worried about how to buy refractory bricks, you can contact us immediately to get free information. Of course, we can provide you with high quality refractory bricks and support customized service!