What is firebrick? Refractory brick is one of the most modern bricks produced with porcelain and refractory clay. This brick tolerates heat above 1000 degrees well, and for this reason, it is one of the most suitable materials for covering the walls of industrial furnaces, making fireplaces and ovens, etc.

According to the firing temperature, there are different types of refractory bricks, colors, dimensions, etc. Don’t miss this article to find out exactly what is a refractory brick and what are its types and uses?

What is firebrick?

Refractory brick is produced from the combination of porcelain and refractory soil, which has a dense and delicate molecular structure. Also, this brick is produced at a temperature of 1500 degrees, which produces different colors depending on the heat of the furnace. For this reason, refractory bricks are especially popular among architects and engineers.What are the compositions of refractory bricks?

One of the main components of refractory bricks is silica and aluminum, the presence of black grains in refractory bricks is due to the silica present in this brick, 73% of which is silica and 23% is aluminum.

Other ingredients of refractory bricks, such as ferric acid, titanium and other metal oxides, form this brick. In addition, refractory soil compounds are one of the main raw materials for the production of refractory bricks.

What is refractory soil?

As the name suggests, refractory soil is a type of soil that is very resistant to heat and does not crack. This soil can be heated in a furnace up to 1500 degrees Celsius. The main composition of this soil is silica and alumina, which can be found under coal layers.

Refractory soil is the most important composition for the production of various types of refractory bricks, which can produce many different colors by changing the composition of minerals in this soil.

How is firebrick made?

In the process of making firebrick, first the stones and its raw materials are ground and turned into soft soil. Next, this soft soil enters the ovens with a specified heat degree, where other required elements are combined. After combining the elements and sufficient moisture, they are directed for molding and pressing.

After the molding stage of the desired mortar, the furnace is arranged in the wagons and they enter the baking stage; There, it completely loses its moisture and the baking process begins at a temperature above 1500 degrees. Baking firebricks usually takes 3 days, after which cooling and packaging are done.

Regarding the production of refractory bricks, a comprehensive article has been prepared, which those interested in the process and method of producing refractory bricks can read by clicking on the link.What are the types of refractory bricks?

What are the types of refractory bricks? In answering this question, 2 situations should be considered:

Types of refractory bricks according to the raw materials of the manufacturer
Types of refractory bricks according to their color
The main reason for the difference of refractory bricks is due to increasing or decreasing the amount of main materials or adding a new element to their composition.

According to the type of material used in them, there are different types of refractory bricks that have different uses.

 These types of bricks include the following:

Special refractory brick
Silica refractory brick
Aluminum refractory brick
Alkaline refractory brick
If you are looking for a comprehensive article about brick, what is it? and you want to get more information about brick and its types, you can access this article by clicking on the link. This article was prepared by Ajr Online, which is a reference for purchasing Ajr Nama throughout the country.What are the most common types of 

refractory brick colors?

What is the best color of refractory brick? Since the colors of refractory bricks are created according to the heat of the furnace, it is impossible to say which color is the best. Because the color spectrum of refractory brick is so wide and attractive that it is difficult for all of us to choose. However, among the most widely used and popular types of firebrick paint, the following can be mentioned:

Refractory English brick, whose color range is from light red to dark red and jaggery.
Refractory chamotte brick whose color range is cream, mustard, orange and gold.
White refractory shell brick
Black and gray refractory brick
Brown refractory brick
Comparison of Chamoti and English refractory bricks
Chamotte and English bricks are among the most popular and best-selling colors among the types of refractory brick colors. In addition to the color, the difference between these two bricks is also noticeable in terms of the type of use.Since chamotte brick has a higher degree of tolerance than English brick, it is widely used in the construction of furnaces