1、 Different appearance
1. Refractory bricks are made of light yellow or brown refractory clay or other refractory materials. It is mainly used to build smelting furnaces, which can withstand high temperatures of 1580 ℃ -1770 ℃, also known as firebricks.
2. In the production process of red bricks, the inside and outside of the bricks are usually burned through with a large fire, and then the fire is turned off to cool the kiln and bricks naturally. At this time, the kiln is full of air and oxygen, forming a good oxidation atmosphere, so that the iron element in the brick is oxidized into iron oxide. Because iron oxide is red, it will also be red.
2、 Different uses
1. Refractory bricks can be used as high-temperature building materials, or in the construction of kilns and various thermal equipment, and can withstand various physical and chemical changes and mechanical effects under high temperature.
2. The latter not only has certain strength and durability, but also has certain advantages of heat insulation and sound insulation due to its porosity. Therefore, it is suitable for wall materials, as well as columns, chimneys, floors, etc. it is often used as building materials in old buildings.
The origin of refractory bricks and red bricks is also different. Red bricks can be produced in most areas, and each place can be self-sufficient. However, refractory bricks are generally cheaper to produce than red bricks. The important thing is that the raw material of bricks is bauxite, and some of red bricks are river flour and clay, so the strength will be poor. I hope Dajia can master this knowledge well.
