There are many types of lightweight insulation bricks,Insulation Brick which are generally divided into two categories according to the use temperature, bulk density and product shape. Classified by body density. Those with a bulk density of 0.4~1.3g/cm3 are lightweight bricks; those with a bulk density of less than 0.4g/cm3 are ultra-lightweight bricks. Classified by operating temperature. Use temperature 600~900℃ for low temperature light brick;Insulation Brick 900~120℃ for medium temperature light brick; over 1200℃ for high temperature light brick.
The production methods of lightweight insulation bricks are different from those of general dense materials. There are many methods, mainly including incineration addition method, foam method,Insulation Brick chemical method and porous material method. Burning and adding material method. Also called the method of adding combustibles. Add combustible materials that are easy to burn, such as charcoal, sawdust, etc.Insulation Brick into the mud for making bricks, so that the products have certain pores after firing. Soaking method. Add foaming agent,Insulation Brick such as rosin soap, etc. to the clay for making bricks,Insulation Brick and make it foam by mechanical method. After firing, a porous product is obtained.
Chemical method. Using a chemical reaction that can properly generate gas,Insulation Brick a porous product is obtained in the process of making bricks, usually dolomite or periclase plus gypsum,Insulation Brick and sulfuric acid as a foaming agent. Porous material method. Use natural diatomite or artificial clay foam clinker,Insulation Brick alumina or zirconia hollow spheres and other porous raw materials to make lightweight refractory bricks.
The use of lightweight insulation bricks with low thermal conductivity and small heat capacity as the structural material of the furnace body can save fuel consumption;Insulation Brick improve the production efficiency of the equipment; it can also reduce the weight of the furnace body, simplify the structure of the furnace, improve product quality,Insulation Brick and lower the ambient temperature. Improve working conditions. Lightweight insulation bricks are mostly used as insulation,Insulation Brick lining or insulation of kilns.
