2024-04-16 10:33:37
Sintered corundum bricks refer to corundum refractory products made from sintered alumina clinker with a content of more than 90%.
Gas bonded corundum bricks have a high melting point, stable performance at high temperatures, good mechanical strength and wear resistance at room and high temperatures, and superior resistance to metal corrosion and oxidation reduction.
The production process of sintered corundum bricks involves crushing the sintered corundum into 3mm coarse particles and some fine powders smaller than 0.074mm. Some are mixed with a small amount of clay and other binders, and then formed using a high-pressure friction brick press or hydraulic press. The bricks are then dried and fired at high temperature. Generally, sintered corundum bricks with high purity are fired at a temperature of 1750-1800 ℃. If a small amount of clay or additives are added, the firing temperature can be between 1600~1700 ℃.
Sintered corundum bricks have been widely used as lining materials in petrochemical thermal equipment with high temperature, high pressure, chemical erosion, and severe mechanical wear. With the progress of production technology in the petrochemical industry, many new processes and technologies have been adopted in production. In order to achieve the goals of high load, long cycle, low energy consumption, and low cost of equipment, in addition to retrofitting various thermal equipment, higher requirements have also been put forward for the lining materials of various thermal equipment.
But the raw materials for corundum bricks are all high-end products, and the price of sintered corundum bricks is also a high-end product among refractory products, so the price will naturally be much higher than that of ordinary refractory products.
Prev: Introduction to the specific use of corundum bricks
Next: What are the common refractory materials
Back To List
