Kuwait customer order 2*40GP lightweight insulation fireclay bricks.
Lightweight clay bricks, also known as lightweight clay insulation bricks, have strong performance. Does it exert the strongest heat insulation effect in the work of industrial kilns?
Lightweight clay brick is a lightweight refractory product with an aluminum content of 30%-46%. It uses clay clinker or light clinker as the main raw material. It is usually produced by combustible methods, and it can also be formed into porous structures by chemical methods or foam methods. . The ingredients are mixed with water to make plastic clay or mud, which is molded by extrusion or pouring, and fired in an oxidizing atmosphere at 1250-1350°C after drying. The commonly used bulk density is between 0.75-1.2g/cm3, and the specific gravity is 1.0 in reality.
It has won the favor of most industrial furnace manufacturers for its good performance and low price. As long as it is not directly in contact with the flame, it is basically replaced by lightweight clay bricks.
So what are the advantages and disadvantages of lightweight clay bricks? Industrial kiln masonry heat storage loss and furnace surface heat loss generally account for about 24-45% of fuel consumption. Lightweight bricks with low thermal conductivity and small heat capacity are used. As a furnace body structure material, it can save fuel consumption; at the same time, because the kiln can quickly heat up and cool down, it can improve equipment production efficiency; it can also reduce the weight of the furnace body, simplify the kiln structure, improve product quality, reduce ambient temperature, and improve labor efficiency. condition. However, lightweight refractory bricks have large porosity and loose structure, so they cannot be used in parts that directly contact slag and liquid metal; their mechanical strength is low, and they cannot be used in load-bearing structures; their wear resistance is poor, and they are not suitable for contact with furnace charges. , Severely worn parts.
Only within its allowable temperature can it exert the strongest heat insulation effect. In the kiln, the general lining part is often in direct contact with the flame and slag, which is only suitable for heavy bricks. It is mainly used in the thermal insulation layer of thermal equipment and industrial furnaces. It can be used in parts without strong erosion and erosion of high-temperature molten materials. Some surfaces that are in direct contact with the flame are coated with a refractory coating to reduce erosion by slag. Flush with furnace gas and dust to reduce damage. Of course, in a non-smelting furnace, there is no contact with the flame.