What should you pay attention to when buying corundum refractory bricks?

White corundum is the main raw material of high-grade refractory corundum bricks, mainly used for large ladle castings, medium and high-grade iron channel castings, Materiali da arma da fuoco, prefabricated parts and other unshaped refractory materialS, as well as various corundum products such as mattoni di corindone, corindone, refining corundum air bricks, high-temperature industrial kiln linings, eccetera. It is widely used in steel, cemento, ceramica, abrasives, petrolchimico, e altre industrie.

Introduction of white corundum brick

The manufacturing process of white corundum bricks is quite complex and precise. It is a high-quality refractory product with an alumina content of 90% and a main crystal phase of corundum. It has a compressive strength of up to 340MPa, a load softening temperature greater than 1700 gradi, buona stabilità chimica, but relatively poor thermal shock stability.

Corundum bricks are divided into sintered corundum bricks and fused corundum bricks. Sintered alumina and fused corundum can be used as raw materials, or alumina clinker with a high Al2O3/SiO2 ratio can be combined with sintered alumina and prepared by sintering. Phosphoric acid or other adhesives can also be used to make unfired corundum bricks.
Silicon corundum bricks are products used in transition zones and cooling zones of large and medium-sized rotary kilns in cement, lime, e altre industrie di materiali da costruzione. Its characteristic is that a specified area of ​​thermal insulation material is embedded in the cold surface of the silicon corundum brick. The thermal conductivity of the thermal insulation material is only 0.11W/(m·k) at 500℃. It can effectively block heat transfer. Insulating silicon corundum bricks are high-grade refractory materials that integrate many advantages such as high strength, good scouring resistance, good erosion resistance, excellent thermal shock stability, and energy saving.

Things to note when purchasing corundum refractory bricks

1. Index performance

It is well known that refractory bricks of different materials have different performances, and the same is true for corundum bricks with fillers. The raw materials used for bricks are different, and the performance is also different, such as brown corundum, white corundum, and black corundum. Perciò, when purchasing corundum bricks, it is necessary to pay attention to the physical and chemical indicators of corundum bricks

2. Size and specifications

When customers choose corundum refractory bricks, there are standard bricks, special bricks, and some require refractory brick manufacturers to design, produce, and process. Perciò, it is necessary to ensure that the size of the produced corundum bricks meets the requirements of the drawings, and the processing and marking can be carried out during on-site construction, and marking can be carried out when delivered to facilitate on-site construction and masonry.

3. Corundum brick manufacturer

Corundum is a refractory brick. Generalmente, as the purchaser of corundum bricks, the purchaser need to provide information such as index performance, size specifications, eccetera. of corundum bricks. Rongsheng refractory materials manufacturer has been established for 20 years and uses corundum bricks as the main refractory material. It has rich production needs. Se necessario, Ci contatti per favore.