Corundum-Mullite Brick for Furnace Sillimanite
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SPECIFICATION:
Product features: the blast furnace with sillimanite brick using synthetic mullite, optimization of alumina, high quality flint clay as the main raw material, after high pressure forming, high temperature sintering, the main mineral of mullite. Product has low porosity, load softening point, good creep resistance, chemical corrosion resistance and excellent seismic stability characteristics, mainly for the lower part of blast furnace throat tube, iron estuary, tuyere zone.
Physical properties and chemical composition
Item | GXS-50 | GXS-60 | MLS-65 | |
Chemical composition | Al2O3 | ≥50 | ≥60 | ≥65 |
SiO2 | ≤45 | ≤38 | ≤33 | |
| Fe2O3 | ≤1.2 | ≤1.0 | ≤1.0 |
Apparent Porosity% | ≤18 | ≤18 | ≤17 | |
Bulk Density g/cm3 | ≥2.4 | ≥2.5 | ≥2.55 | |
Cold Crushing Strength Mpa | ≥45 | ≥50 | ≥60 | |
0.2Mpa Refractoriness Under Load T0.6 °C | ≥1550 | ≥1600 | ≥1650 | |
Permanent Linear Change On Reheating(%) 1500°C*2h | ±0.1 | ±0.1 | ±0.1 | |
Thermal Shock Resistances 100°C water cycles | ≥20 | ≥20 | ≥20 | |
Reversible Thermal Expansion 1000°C | 0.55 | 0.6 | 0.6 | |
Pyrometric Cone Equivalent S.C. SK | 35 | 36 | 38 | |
Range of Application | Rider Arches | Superstructure forehearth | Superstructure forehearth | |
- 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?
- Industrial production of perlite as insulation materials began in the United States in 1964Arizona, while China's expanded perlite began production in the late 60s. Expanded perlite includes perlite and pineRock and obsidian (three of which are close to the water content), due to the high temperature in 1000-1300C0, the volume of rapid expansion of 4 - 30 times, so collectively referred to as expanded perlite. Its characteristics are: low thermal conductivity, fire resistance and sound insulation performance is good, non-toxic, cheap, but have very strong water absorption, thermal conductivity due to water is much higher than that of pearlite, water will cause its insulation performance degradation, inorganic porous material, low strength, easy to break; therefore in thermal insulation applications when the need to enhance the hydrophobic and expanded perlite.
- 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?
- Is the main varieties of acidic silica brick, refractory brick. It is mainly used for coke oven building, also used in furnaces all kinds of glass, ceramic and carbon calciner, refractory brick arches and other load-bearing parts, is also used in high temperature bearing part of hot blast stove, but should not be used in thermal equipment below 600 DEG C and the temperature fluctuation in the.
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Corundum-Mullite Brick for Furnace Sillimanite
- Ref Price:
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- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
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- Supply Capability:
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