Corundum-Mullite Brick - Corundum Mullite Ladrillos

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Corundum mullite brick technology parameters

ITEM	UNIT	Mullite brick	Resintering fused mullite bricks	Mullite - corundum brick	Corundum mullite brick
Al2O3	%	≥70	≥75	≥80	≥90
SiO2	%	≤25	≤23	≤18	≤8
Fe2O3	%	≤0.5	≤0.5	≤0.5	≤0.3
APP	%	≤17	≤14	≤19	≤18
Bulk density	g/cm	≥2.55	≥2.65	≥2.70	≥2.90

Room temperature compressive strength	MPa	≥90	≥100	≥80	≥100
Dutch soft starting point (0.2 MPa, 0.6%)	℃	≥1630	≥1700	≥1650	≥1700

Application

Glass furnace upper structure brick, feeding, cover plate, metallurgy is very warm in it industry kiln lining, carbon black reactor quench section, stay segment lining.

Glass furnace top self-closed, self-closed feet, other industrial thermal technology equipment lining brick.

Glass furnace brick of upper structure, cover plate, forming parts, temperature, carbon black in the reactor and other thermal lining device.High temperature with mullite and corundum saggar.

The upper structure of glass furnace brick, brick, cover plate, molding parts, temperature, carbon black in the reactor lining device and other thermal lining.High temperature with corundum - mullite saggar.

Q: Mullite bricks in alumina alumina is what?: Mullite (3Al2O3 - 2SiO2) high alumina refractory materials as the main crystal phase. The general alumina content in 65% ~ 75%. In addition to mineral composition of mullite, alumina containing low also contain a small amount of glass phase and cristobalite; alumina containing high also contain a small amount of corundum.

Q: What are the properties of corundum mullite?: Lightweight materials have uniform internal structure, high compressive strength, corrosion resistance, heat shock resistance, oxidation resistance, high temperature and low thermal conductivity. Dongshin refractories manufacturers manufacturers supply, price is appropriate

Q: Corrosion mechanism of iron on refractory materials: But you can do refractory additives. Iron oxide paints are widely used in this area. Mentioned refractory material of high school textbooks generally refers to three two aluminum oxide (alumina), alumina is also used as a refractory material, refractory crucible, porcelain, artificial gemstones.

Q: Which is faster for heat transfer between corundum bricks and high alumina bricks?: 43 3.65kg or so, the use of temperature 75, high aluminum in about 1520, 43 of brick 1430 or so, the color of 75 pan white, 43 of the Loess color. In short, the difference is great.

Q: 2000 degree of high temperature materials, which belong to high temperature insulation materials?: Magnesium compounds, ceramics, mica, corundum, silicon, graphite, titanium alloy, diamond, tungsten, silicon dioxide, silicon carbide, carbon, copper oxide, iron oxide, iron, manganese, lightweight mullite corundum brick, high aluminum brick lightweight clay brick, alumina hollow ball1) rock wool board: thermal conductivity 0.041-0.045, fire retardant, fire resistance, temperature absorption, insulation effect is poor.(2) glass wool: construction is simple, free cutting. Antibacterial, mildew proof, aging resistance, corrosion resistance, and guarantee the healthy environment. Low hygroscopicity and stable physical properties.

Q: What material is heat insulated and not afraid of fire?: According to the different raw materials are divided into rock wool and slag cotton. In 1840, the United Kingdom to achieve the melting of slag after the formation of fibers, produced slag cotton, used for building insulation, so far more than 160 years of history. Features are: thermal insulation performance, also has the fire characteristics, good sound absorption and vibration damping effect, but different materials of mineral wool class containing asphalt, glue or other organic material, easy to produce harmful substances and environmental pollution, low intensity, as the maintenance of the structure of the thermal insulation layer is easy to collapse, the production process is more complicated has been replaced by other materials.

Q: What are the high temperature insulation materials?: If there is atmosphere protection, then graphite is a more powerful material. Melting point 3850 degrees Oh, almost all ultra high temperature kiln, can be protected by atmosphere, all with graphite material.

Q: What kind of refractory material is used in the hearth of reverberatory furnace?: The use of temperature ceramic fiber long 950-1260 in general, there are many domestic manufacturers do not understand the deceive customers, often in accordance with the classification of temperature to the material sold to customers, such as zirconium ceramic fiber belongs to the 1400 type, but the long-term use temperature of 1260 degrees or less, impossible to maintain 1400 degrees to 1260 degrees, so the equipment in order to use ceramic fiber, high grade can only be used on polycrystalline fiber

Q: What material is good for refractory bricks?: Clay brick is a refractory brick commonly used in blast furnaces, hot blast furnaces, heating furnaces, power boilers, lime kilns, rotary kilns, ceramics and refractory bricks.

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