Chrome Brikoj
Chrome bricks are neutral bricks, mainly used as an isolation layer for acidic and alkaline refractories at high temperatures, and also used as the lining of non-ferrous smelting furnaces.
Tamen, it should not be used in direct contact with the iron and the atmosphere changes frequently.
Chrome brick in the glass melting kiln began to be used. But only limited to dark bottles and jars glass kiln or alkali-free glass fiber kiln.
And mainly used in the high-temperature parts of the glass kiln. Such as the upper pool wall, small furnace mouth, flowing liquid hole, charging mouth, and other places, because it can significantly extend the kiln age.
PER company produces high-quality refractory bricks including refractory clay bricks, altaj aluminaj obstinaj brikoj, obstinaj silikaj brikoj, magnesia refractory bricks, mulitbrikoj, izolaj brikoj, ktp.
Meanwhile, if you are interested in our refractory brick products, or if you are planning to build a furnace or kiln, you can contact us! We will reply to you promptly with professional advice and a competitive price!
More Chrome Bricks Types
Aluminum-Chromium Bricks
AlCr brick is a high alumina brick with Al2O3 as the main component and a small amount of Cr2O3.
The sintered brick made of AlCr slag is also AlCr brick, also called AlCr slag brick. Aluminum-chromium brick than high alumina brick erosion resistance, aluminum-chromium slag brick, and high-temperature mechanical properties of good characteristics.
AlCr brick has many advantages such as high density, malalta poreco, high bond strength, high hardness, high load softness, good wear resistance, anti-scouring, bona termika ŝoko rezisto, strong resistance to metal melt and slag corrosion, long life, ktp.
Which is widely used in various smelting equipment and other ultra-high temperature kilns.
Magnesium Chrome Brick
Ordinary magnesia-chromium brick is made of sintered magnesia sand and chromite as raw materials, in appropriate proportion, by forming and high-temperature firing.
The mineral composition of the product is magnesite, spinelo, kaj malgranda kvanto da silikato.
Ordinary magnesia-chromium brick has good resistance to alkaline slag, better resistance to acid slag than magnesia brick, better resistance to thermal shock than magnesia brick, higher load softening temperature, and good volume stability at high temperature, small shrinkage of the refired line at 1500℃.
Magnesium aluminum brick has good slag resistance, high-temperature performance, and thermal stability, the price is cheaper than magnesium spinel brick.
They are widely used in the roof of steelmaking flat furnaces and are still used in steel ladles, steelmaking furnace linings, glass kiln heat storage chambers, mixed iron furnaces, copper reflex kiln roofs, and refractory industry high-temperature kilns.
Types and Characteristics of Magnesium-Chromium Bricks
Nuntempe, there are several types of magnesium chrome brick produced through different methods, including common brick, direct bonding brick, common sintered brick, re-bonding brick, and fusion casting brick.
1. Common Magnesia Chrome Brick
This is the traditional product, with chrome ore as coarse particles and magnesium sand as a fine powder. Or two materials using graded particle composition, the firing temperature is generally 1550 ~ 1600 ℃. The microstructure of this brick shows little direct combination between chromite particles and magnesite, mostly silicate (CMS) cementation or fissure isolation. Fang magnesite in the desolvation phase less, the matrix is rarely directly combined, the mechanical properties of this brick are poor, poor resistance to slag corrosion.
2. Directly Combined Magnesia-Chromium Brick
Directly combined with magnesium-chromium brick is developed based on ordinary magnesium-chromium brick. Its production characteristics are mainly two points, one is the use of more pure raw materials, and the second is the use of higher firing temperature. The so-called direct bonding means that there is more direct contact between chromite particles and magnesite in the brick. Because there is less Si02 in the raw material (controlled below 1% al 2%), less silicate is generated. Then the silicate is extruded into the corner of the solid phase particles using high-temperature firing, thus improving the direct bonding of the solid phase.
Direct bonding magnesium-chromium brick due to the high degree of direct bonding, so that the brick has a high-temperature strength, rezisto al skorio, erosion resistance, scouring resistance, koroda rezisto, and excellent thermal shock stability and volume stability at 1800 ℃.
3. Common Sintered Magnesium-Chromium Brick
This product production process is characterized by a certain ratio of magnesium sand and chromite fine powder mixture of high-temperature combustion. To achieve the generation of secondary spinel and magnesia-chromite direct bonding for solid-phase reaction, the production of common sintering material. This material is used to manufacture sintered products or chemically bonded products.
Co-sintered magnesia-chromium bricks have better direct bonding and microstructural homogeneity than directly bonded bricks, with more magnesite desolvation phase and intergranular secondary spinel, co-sintered magnesia-chromium bricks have a series of better properties than directly bonded bricks, especially known for high-temperature strength, resistance to rapid temperature change and slag resistance.
4. Combined Magnesium-Chromium Brick
Electric fusion method to make magnesium-chromium mixed powder melt, through the melt precipitation crystal, the formation of a fairly uniform microstructure, magnesium-chromium spinel, and magnesite mixed crystal as the main phase composition of the raw material, the electric fusion magnesium-chromium material crushed into certain particle size, mixed molding, by firing to prepare the combined brick, or directly used to do chemically bonded brick.
Pri PER Refractories Company
PER Refractories Company is located in Xinmi City, Henan Provinco, la hejmurbo de obstinaj materialoj en Ĉinio. Nia firmao estas teknologi-bazita obstina entrepreno integranta R&D, produktado, vendoj, kaj teknika servo. The rich resources and excellent quality in the territory provide unparalleled superior conditions for the production of refractory materials. Our main products are refractory clay bricks, altaj aluminaj obstinaj brikoj, obstinaj silikaj brikoj, magneziaj obstinaj brikoj, mulitbrikoj, izolaj brikoj, and other high-temperature resistant products.
Kompanio PER refractario estas la produktada bazo de verda, ŝparado de energio, kaj medio-amikaj novaj obstinaj materialoj. Nia kompanio pasis ISO9001:2008 internacia kvalito-sistema atestado kaj GB/T24001-2004 / ISO14001:2004 atestilo pri media administrado, entrepren-kvalita inspekta agenteja atestado. Niaj produktoj estas venditaj bone en pli ol 20 landoj tra la tuta mondo. Ili estas la preferataj obstinaj produktoj por metalurgio, neferaj, petrolkemiaj, vitro, ceramiko, kaj aliaj obstinaj industrioj.
