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Acid-resistant refractory brick is a kind of refractory brick that can withstand acid and alkali. Its main component is silica, with a content of about 70%. It has the characteristics of acid and alkali resistance, oxidation resistance, and corrosion resistance, and is widely used in the chemical industry. In the fields of petroleum, and smelting electric lights, the emergence of acid-resistant refractory bricks is to solve some high-temperature kilns where some media are corrosive. Today, I will give you a brief introduction to the materials and characteristics of acid-resistant refractory bricks.
Material of acid-resistant refractory bricks
The main raw materials of acid-resistant refractory bricks are quartz, feldspar, and clay. They are corrosion-resistant materials made by high-temperature oxidation and decomposition. The main one is silica, which can form a large amount of mullite under high-temperature roasting. This is a substance with excellent acid resistance.
Characteristics of acid-resistant refractory bricks
1. Strong acid resistance
The silica content in acid-resistant refractory bricks accounts for about 70%. This substance can form a large amount of mullite in high-temperature environments. It has strong acid resistance and can withstand the erosion of acidic media. At the same time, its water absorption rate is very high. It is also relatively low, which can avoid the penetration of media.
2. High strength and high wear resistance
The compressive strength of acid-resistant refractory bricks can reach about 120Mpa, and its hardness can reach Mohs level 7, so it has high strength and wear resistance and can resist the continuous erosion and strength impact of the medium during long-term use. , to ensure the stability of use.
3. Low water absorption rate
The volume density of acid-resistant refractory bricks is 2.31-2.4g/cm³, so this makes acid-resistant refractory bricks high in density and strength, and not easy to expand. Therefore, its water absorption rate is low. The low water absorption rate ensures the practical application of acid-resistant refractory bricks. Medium stability avoids the expansion and cracking of refractory bricks.
The above is an introduction to the materials and characteristics of acid-resistant refractory bricks. Acid-resistant refractory bricks are widely used in anti-corrosion fields such as chemical industry, petroleum, electric power, papermaking, metallurgy, chemical fiber pharmaceuticals, juice, electroplating rooms, etc. They can also exert their high efficiency and resistance in underground sewers. Corrosion ability, so its application is also very wide.
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