Acid Refractory Material

Acid refractory material is a type of special refractory that can maintain stability in acidic environments and have corrosion resistance. We often use it widely in industrial equipment and high-temperature processes that need to resist acidic media erosion.

Detailed Introduction of Acid Refractory Material

Generally speaking, acidic refractory materials refer to refractory materials with a SiO2 content greater than 93%. Its main feature is that it can resist the erosion of acidic slag at high temperatures, but it is easy to react with alkaline slag. In other words, acid refractories are not resistant to alkaline slag and alkaline flux. In addition, Kerui sells various types of acid-refractory materials. Such as silica bricks, silica insulation bricks, silicon carbide bricks, calcium silicate boards and acid resistant castables. If you want to buy acidic refractory for your furnace or kiln, come and contact Kerui Refractory. Kerui Refractory will offer you low price acidic refractory with high quality performance.

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What are Kerui Acid Refractory Material Resistant to?

Acid-resistant refractory materials can withstand the erosion and corrosion of various acidic media. They have the ability to resist different acidic media, including but not limited to the following common characteristics.

  • Acid Resistance
  • High Temperature Resistance
  • Wear Resistance
  • Slag Resistance
  • Chemical Resistance
  • Mechanical Stress Resistance

What are the Applications of Acid Refractory Material?

Acid refractories play an important role in multiple fields and applications. The following are some common application areas of acid refractory materials.

Chemical Industry

Acid refractory china is widely used in acid reactors, tanks, pipes and installations in the chemical industry. Furthermore, these reactors and devices often need to be resistant to acidic media. Such as sulfuric acid, phosphoric acid and hydrogen chloride for chemical reactions, storage and processing.

Metallurgical Industry

In the metallurgical industry, acidic refractory materials are often used in the lining of high-temperature furnaces, kilns and converters. So, it can withstand the acid gases generated during metallurgical processes and the corrosion of molten metal. Such as copper sulfate smelting, steel-making process, etc.

Electric Power Industry

We often use Kerui acid resistant refractory widely in boilers, chimneys and flue gas purification equipment of thermal power plants. Additionally, in the electric power industry, these devices often need to be resistant to acid gases in combustion products. Such as sulfur dioxide and nitrogen dioxide.

Petrochemical Industry

In the petroleum and chemical industries, acid refractory material is used in tanks, pipes, reactors and installations that are resistant to acid corrosion. That is, it is resistant to the acidic media found in petroleum processing and chemical production. Such as acidic catalysts and corrosive solvents.

Applications of Kerui Products

Differences Between Acid Refractory Material and Alkaline Refractory Material

Test of Acid Refractory

Chemical Properties

Acid refractories are mainly composed of acid oxides, such as silica (SiO2). These materials are stable in acidic environments but susceptible to erosion in alkaline environments. In contrast, alkaline refractories are primarily composed of alkaline oxides such as magnesium oxide (MgO) and calcium oxide (CaO). These materials are stable in alkaline environments but susceptible to corrosion in acidic environments.

Uses of Acid Refractory Material

Application Environment

We apply acid refractory material to industrial equipment and high-temperature processes in acidic media, such as sulfuric acid and hydrochloric acid. It is commonly resistant to acidic media and maintains stability and durability. On the contrary, alkaline refractory material is suitable for industrial equipment and high-temperature processes in alkaline media. Such as sodium hydroxide solution.

Acid Refractory Bricks

Feature Differences

There are also differences in properties between acidic refractories and alkaline refractories. Like silica bricks, acid refractories generally have high wear resistance and mechanical strength. Therefore, it is suitable for environments subject to mechanical stress and wear. Alkaline refractories have relatively low hardness and wear resistance. But it generally has better slag resistance and thermal shock stability.


Kerui Company is the world’s leading supplier of acid refractory materials. We produce tons of high-quality acid refractory materials every year and sell them globally. Are you looking to buy silica bricks or other acid refractory materials? Are you planning to buy a refractory material that is cheap and resistant to acid slag corrosion? Contact Kerui Refractory for a low price or follow us on Instagram!

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