Brief Description
Sillimanite bricks are a kind of high quality refractory brick with high refractoriness of 1770~1830℃ and high refractoriness under load of 1500~1650℃, whose physical and chemical property is better than high alumina bricks. Sillimanite transforms into mullite and free silicon dioxide after high temperature firing. Sillimanite refractory bricks generally adopt manufacturing process of high temperature firing and mud mix pouring process.
Property
Good thermal shock resistance
High dense structure
Slag corrosion resistance
Good thermal conductivity
Good thermal stability
Heat exchanger
High structural strength
Low high temperature creep
Application
Widely Application In Non-Ferrous Metal Metallurgy Industry and Iron And Steel Industry
Widely Application In Building Materials, Ceramics And Grinding Wheel Industry
Widely Application In Metallurgical Processing Industry and Energy Saving
parts of the coke ovens and Silica Brick For Glass Kiln.
Sillimanite brick has many good features such as high strength and wear resistance so that can be used as lining building materials for all kinds of furnaces or kilns.
Technical Datas
| Item | GXS-50 | GXS-60 | GXS-62 | |
| Chemical Composition % | Al2O3 | ≥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) | ≥1550 | ≥1600 | ≥1650 | |
| Permanent Linear Change On Reheating | ±0.1 | ±0.1 | ±0.1 | |
| Thermal Shock Resistance 100℃ water Cycles | ≥20 | ≥20 | ≥20 | |
| Reversible Thermal Expansion 1000℃ | 0.55 | 0.6 | 0.6 | |
| Pyrometric Come Equivalent S.C.SK | 35 | 36 | 38 | |
| Range of Application | Rider Arches | superstructure forehearth |
superstructure forehearth |
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