Refractory
Insulation Bricks
Insulation Bricks
Insulation bricks are shaped refractory products that are used as thermal barriers.insulation bricks These refractory materials are lightweight and can withstand temperatures of over 1000 deg C. They are ideal for a wide range of applications.
They are made from lightweight raw materials like clays and gypsum.insulation bricks In addition, they can be fabricated into a variety of shapes. For example, they can be made in arch forms, round shapes, and rectangular sizes. Depending on the specific needs of the application, insulating bricks can be made with different density and temperature levels.
Insulation firebricks are a special type of refractory brick that is commonly used in furnaces and reformers.insulation bricks Besides being a thermal barrier, they are also used for combustion chamber linings. The temperature level that these products are manufactured for varies, but the classification is generally determined by ISO 2245 and ASTM C155.
Refractory bricks are manufactured from a number of raw materials.insulation bricks They are more durable and can withstand heat absorption better than a regular clay brick. The main advantage of these refractory materials is their high insulating capability. Their low bulk density is another desirable property.
Other factors that affect their thermal insulating ability include their porosity, mineralogical composition, and chemical composition. Insulating firebricks can be classified into two basic categories: High-density and Medium-density. Each category of refractory brick has its own specific advantages and disadvantages. Typically, high-density insulating firebricks are used in large kilns and furnaces where they provide excellent structural and insulating qualities. Among these properties, low thermal conductivity and good thermal shock resistance are important.
Alumina-silica bricks are the most common types of insulating firebricks. They have a duty rating and are suitable for Portland industrial furnaces. However, they have a lower compressive strength than dense silica refractory bricks.
Silica insulation bricks are designed to resist slag erosion and offer excellent thermal insulation. They are lighter than conventional refractory bricks and can serve in temperatures from 1500 to 1550 deg C for a long period of time.
Insulating firebricks are made by a wide variety of processes. Some of the methods of manufacturing these refractory materials are slingering, extrusion, and foaming. Slingering is a continuous process that involves slinging semi-extruded material onto a belt. An intensive mixer is used to homogenize the material and foam. Another technique of manufacturing refractory bricks is foaming, which produces pores in the insulating firebrick.
In addition to being a refractory material, insulating bricks are made from plastic clay-based binders. Combustible material is typically included in the mix, but molasses and starch are also commonly added. Typical insulating firebricks have a density of 2 pounds. When manufactured, they can be marked with a density and classification temperature.
The production process is generally uniaxial, but in some cases, it can be oriented. A pore former is often used to control the pore morphology of the insulation brick. Several different techniques are applied to manufacture insulating firebricks, including extrusion, hydraulic single-press, foaming, and slingering.
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