In the acidic environment of the push plate kiln, acid-resistant refractories need to be selected 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 a batch kiln that is periodically loaded and unloaded, usually consisting of parts such as the kiln body, fire channel, combustion chamber and smoke exhaust system. The working principle of the push plate kiln is that the ceramic products go through a series of heating, sintering and cooling processes in the kiln. A series of push plates are arranged inside the kiln body, and ceramic products are pushed into the kiln through these push plates, and 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 refractories: acid-resistant bricks: such as aluminosilicate bricks (commonly known as aluminum silica bricks), silicon carbide bricks, etc., which have high acid resistance and high temperature resistance. Acid-resistant castables: Aluminum silicate castables, for example, are acid-resistant refractories used to pour the inside of kilns and provide effective protection. Acid-resistant coatings: Some special acid-resistant coatings can be used to coat the surface of the kiln to enhance its acid resistance and durability. Acid-resistant fiber products: such as acid-resistant ceramic fibers, acid-resistant ceramic fiber felts, etc., can be used for the thermal insulation liner or filling material of the kiln body, which plays the role of heat preservation and acid resistance. Corundum mullite bricks: with corundum and mullite as the main raw materials, it is made by adding an appropriate amount of alumina, silica ultrafine powder and additives, and fired at high temperature in an oxidizing atmosphere, which can be directly in contact with flames, resistant to spalling and high temperature. When selecting refractory materials, it is necessary to consider factors such as acid resistance, high temperature resistance, mechanical strength and applicable construction methods to ensure that the kiln body can operate stably for a long time in a high-temperature and acidic environment. You can consult the refractory supplier or engineer for specific advice and solutions.