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SillimaniteRefractoryBricks

Sillimanite Bricks/

Sillimanite Refractory Bricks

Product advantages: High quality and competitive price

Supply advantage: Fully automatic intelligent refractory production line

Certification: We have been approved by ISO9001/ISO14001

Sample: Sample testing is available

After Sales Service: 7*24 hours responsive customer online service, fast delivery service worldwide.

Customization: Customized refractory materials and solutions according to customer requirements.

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Sillimanite bricks are sillimanite mineral-based refractory bricks produced by the high-temperature sintering method or slurry casting method. Sillimanite brick manufacturing has very good high-temperature performance. Sillimanite is a natural high-grade refractory mineral, it features a low thermal expansion rate, good molten slag corrosion resistance and glass liquid corrosion resistance, excellent high-temperature abrasion resistance, and so on. After high-temperature calcining, sillimanite will transform into mullite and free SiO2. Sillimanite bricks and mullite bricks have higher refractoriness under load compared with fireclay bricks. Sillimanite bricks have a dense structure, when applied in glass furnaces, glass liquid does not tend to form bubbles. So sillimanite bricks are suitable for feeding canisters, clay barrels, former blocks, and feeder bowls.

Specification of Sillimanite Refractory Brick

Sillimanite Bricks
Item/IndexGXS-50GXS-60GXS-50
Chemical CompositionAl2O3≥50≥60≥62
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
Refractoriness Under Load (0.2Mpa T0.6℃)≥1550≥1600≥1650
Reheating Linear Change Rate (1500℃*2h %)±0.1±0.1±0.1
Thermal Shock Resistance (100℃ water/times)≥20≥20≥20
Reversible Thermal Expansion (1000℃ %)0.550.60.6
Pyrometric Cone Equivalent (S.C. SK)353638
ApplicationRider ArchForehearth superstructureForehearth superstructure

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