Mineral composition and microstructure: When the crystalline phase content is in the material guess, the crystalline mineral is in a matrix with a high melting point, a high amount, and a low amount of high temperature liquid.The viscosity and looseness often show excellent chemical resistance. Chemical composition and function: should be high purity, high impurities should be less, especially to strictly control the harmful content thousand times; the chemical reactivity between sintered ventilated bricks and corrosion is low, with the same (or similar) acidity and alkalinity.
Porosity and porosity indicate that porosity is a shortcut in the erosion material and can significantly increase the contact area between the erosion and the material. If the material shows low porosity and small pore size, it is often useful to prevent penetration Penetrates and then advances its ability to resist chemical corrosion.
Temperature: The higher the sintering temperature, the lower the ability of the sintered porous brick to resist chemical corrosion. In engineering, the corresponding measures are often adopted to reduce the temperature of the furnace lining. The primary intention is to reduce the temperature and slow the corrosion of the furnace lining.
Corrosion viscosity content: Corrosive gas or liquid has a low viscosity, and the refractory material will significantly advance the surface contact, and even wrap the material, so that the corrosive material will simply penetrate and disperse to the internal material. The larger the corrosion viscosity is, the less its permeability effect Sometimes it can prevent further entry and scattering to internal substances. The corrosion of viscosity is mainly related to chemical composition and temperature.
Atmosphere: The corrosion resistance of sintered permeable bricks is extremely active to the atmosphere. In the recovery atmosphere, the corrosion function of aluminum silicate refractories on iron oxide slag is significantly reduced.
In short, the chemical properties, temperature, and mineral composition of permeable bricks will affect the chemical resistance of sintered bricks, so these factors should be controlled during the production process.