Corundum bricks are high alumina refractory fire bricks
made for extreme demands. The alumina content in corundum brick is from
synthetic corundum of high purity, such as white fused alumina or
tabular alumina. Additional ingredients are special refractory clays, reactive alumina, and very pure modifications of silica. Corundum bricks are fired at high temperatures to form a matrix with mullite, mullite-corundum or corundum that has excellent volume stability.
The service temperature for corundum brick
goes up to 1800°C. Corundum bricks can be used in nearly all fields of
industrial application where extreme high temperature and increased
resistance against aggressive slags and atmospheres are necessary. Such
properties or features of corundum bricks are necessary especially in
the chemical industry and for the production of carbon black. The
addition of chromium oxide, zirconium oxide, and phosphates gives the refractory
bricks excellent structural flexibility, which is required for ash
melting furnaces and gas reactors in incinerators. Wanhao Refractory
distributes Corundum Bricks of the best quality at the most competitive
prices with our fast, responsive customer service and reliable delivery
service.
Contact us to order corundum brick, and our fast reliable delivery services will save you time and money!
Article Source: Corundum Brick Company name: Wanhao Refractory Email:sales100@wanhaorefractory.com Website:http://www.wanhaorefractory.com/
Ladle purging plug is a kind of functional refractory material with long life, energy saving, consumption reduction and emission reduction. It is made by firing high-purity raw materials. It has the advantages of high blow-through rate, corrosion resistance, thermal vibration resistance, safety and reliability, and long life. P urging plug is used in the out-of-furnace refining of ferrous metals and the smelting of non-ferrous metals. 1.The influence of smelting conditions on the air permeability of ventilating bricks The greater the degree of overheating, the lower the viscosity, surface tension, and wetting angle of the molten steel, the greater the tendency to seep steel, and the lower the ladle blow-through rate. Some research materials have introduced: when the carbon in the iron-carbon melt is 0.15% and 0.40%, the surface tension appears the minimum and the maximum, reducing the content of the non-metallic elements sulfur and oxygen of the steel grade can si...
The common reasons for the steel outlet blockage are as follows: (1) There is no steel outlet blocked after the last furnace is discharged. During smelting, the molten steel and slag enter the steel outlet, which makes the outlet blocked. (2) After the slag pouring in the last furnace, the remaining steel slag in the tapping port is blocked without all chiseling, which causes the outlet of the next furnace to be blocked. (3) The new outlet is generally small and long, and the plugging is not in place. In the smelting process, the steel and slag are filled into the hole, which causes the plugging. (4) During the tapping, the slag of the lining brick and the agglomerate falling off in the molten pool enters the steel outlet, which may also cause the steel outlet to be blocked. (5) Slag ball is used to prevent slag from steel. Before the next furnace is discharged, the slag ball of the previous furnace is not poked open, which causes the outlet to be blocked. Treatmen...
After summarizing the actual operating experience, the main reasons for the problems in the use of the submerged entry nozzle and the solutions were found. Specifically in: 1) Fracture before or during the process of pouring steel at the nozzle. The submerged entry nozzle is about 1 meter long but only fixed by the upper part, so it is mechanically damaged during transportation, hard objects collide with the nozzle during installation, unstable or falling too fast when lifting the intermediate tank, and the impact on the nozzle during the pouring process causes the root fracture. In order to prevent the nozzle from breaking, mechanical collision should be avoided as much as possible during transportation and installation, and the problem should be stopped in time, and a layer of rubber pad should be placed on the intermediate tank seat frame to make the crane take off and land smoothly. 2) The slag line is eroded too quickly. After continuo...
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