Chrome corundum brick for glass kiln

Chrome corundum brick for glass kiln

Chrome corundum brick refers to corundum refractory products containing Cr2O3. At high temperature, Cr2O3 and Al2O3 form a continuous solid solution, so the high temperature performance of chromium corundum products is better than that of pure corundum products. Chromium corundum products are widely used, and the content of Cr2O3 is mostly in the range of 9% to 15%.

The main mineral composition is α-Al2O3-Cr2O3 solid solution. The secondary mineral composition is a refractory brick with a small amount of composite spinel (or no composite spinel) and a chromium oxide content of 1% to 30%. There are two types of fused cast chrome corundum bricks and sintered chrome corundum bricks. In general, chrome corundum bricks refer to sintered chrome corundum bricks.

Using α-Al2O3 as raw material, adding an appropriate amount of chromium oxide powder and chromium corundum clinker fine powder, after molding, firing at high temperature. The chromium oxide content of sintered chrome brick is generally lower than that of fused cast chrome corundum brick. It can also be prepared by slurry casting method. Mix α-Al2O3 powder and chromium oxide powder evenly, add debonding agent and organic binder to make thick slurry, and add part of chrome corundum clinker at the same time to make bricks by grouting method. fired again.

Fused zirconium corundum chrome corundum brick--cheese brick is made of high-quality and high-purity raw materials, and is made of long-arc high-temperature melting and oxidation treatment in a special electric arc furnace. Therefore, this casting process virtually eliminates carbon contamination of graphite electrodes.

The oxidation-cast zirconium corundum bricks produced by this melting and casting process and high-quality and high-purity raw materials have special and high resistance to glass liquid erosion, and almost no pollution to the glass liquid. This product is suitable for various glass furnaces. lining.

Fused zirconium corundum features:

It has the advantages of high refractoriness, high strength, good thermal shock stability, and strong corrosion resistance. Good use effect.

Scope of application of chrome corundum brick

Chrome corundum bricks used in petrochemical industrial gasifiers should be low silicon, low iron, low alkali, high purity, and have high density and strength.

Chrome corundum bricks are made of metal chrome slag as the main raw material. This product is widely used in zinc smelting electric furnaces and volatilization kilns. Chrome corundum bricks have excellent thermal vibration stability and high temperature creep performance, and are in line with the national circular economy. requirements.

It is used for the upper layer of the regenerator with serious erosion such as glass kiln, coking coal powder combustion technology, glass kiln, water glass kiln, glass wool, etc. It is also used for nozzle bricks.

It can be used as glass kiln lining, wire drawing glass flow liquid hole cover brick and used in molten iron pretreatment device, garbage incinerator, coal water slurry pressurized gasifier backing, etc.