Refractory Materials Required for Acidic Environment of Push Plate Kiln

In the acidic environment of the push plate kiln, acid-resistant refractory materials need to be used to protect the kiln body from corrosion and high-temperature damage.

A push plate kiln is a type of kiln used to produce ceramic products. It is an intermittent kiln that is loaded and unloaded periodically. It usually consists of a kiln body, a fire channel, a combustion chamber, and a smoke exhaust system.

The working principle of the push plate kiln is that ceramic products undergo a series of heating, sintering, and cooling processes in the kiln. There are a series of push plates inside the kiln body. Ceramic products are pushed into the kiln through these push plates. After a certain time and temperature treatment, they are pushed out of the kiln by the push plate on the other side.

The following are some commonly used acid-resistant refractory materials:

Acid-resistant bricks: Such as aluminosilicate bricks (often called silica-alumina bricks), silicon carbide bricks, etc., which have high acid resistance and high-temperature resistance.

Acid-resistant castable: For example, aluminum silicate castable is an acid-resistant refractory material used to cast the inside of the kiln body and can provide effective protection.

Acid-resistant coating: Some special acid-resistant coatings can be used to coat the surface of the kiln body to enhance its acid resistance and durability.

Acid-resistant fiber products: such as acid-resistant ceramic fiber, acid-resistant ceramic fiber felt, etc., can be used as thermal insulation lining or filling material of the kiln body to play the role of insulation and acid resistance.

Corundum-mullite bricks: Made of corundum and mullite as the main raw materials, by adding an appropriate amount of alumina, silicon oxide ultrafine powder, and additives, and firing at high temperature in an oxidizing atmosphere. They can be directly exposed to flames, resist peeling, and resist high temperatures.

When selecting refractory materials, factors such as acid resistance, high-temperature resistance, mechanical strength, and applicable construction methods need to be considered to ensure that the kiln body can operate stably for a long time in a high-temperature acid environment. Consult your refractory supplier or engineer for advice and solutions tailored to your specific situation.