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| Customization: | Available |
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| Feature: | Good Mechanical Strength, Good Thermal Insulation Performance, High-Temperature Resistant, Low Thermal Conductivity, Long Time Materials |
| Refractoriness (℃): | 1580< Refractoriness< 1770 |
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Andalusite is a natural high-alumina refractory mineral raw material widely used in the manufacture of high alumina refractory bricks and monolithic refractories.
During high-temperature firing, andalusite converts in-situ into mullite, accompanied by slight expansion, which effectively compensates for shrinkage in refractory formulations. This property gives refractory products excellent volume stability, thermal shock resistance, and long service life.
Due to its stable quality and cost-effective performance, andalusite is commonly used in steel, cement, petrochemical, glass, and power industries.
Features
Natural High Alumina Mineral
A reliable raw material for advanced refractory applications.
In-Situ Mullite Formation
Converts to mullite during firing, improving high-temperature stability.
Excellent Volume Stability
Low permanent linear change after firing.
Low Thermal Expansion
Reduces cracking and improves thermal shock resistance.
Stable Chemical Composition
Suitable for shaped and unshaped refractories.
Cost-Effective Performance
Improves refractory performance while controlling material cost.
High Alumina Refractory Bricks
Low Cement and Ultra-Low Cement Castables
Steel Ladle and Tundish Refractories
Cement Kiln Linings
Petrochemical Furnace Refractories
Glass Furnace Refractory Materials
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Chemical Composition and Size of Andalusite
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Grade
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Al2O3
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SiO2
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Fe2O3
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TiO2
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CaO
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MgO
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Na2O
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K2O
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Size
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Y56
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56
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41.5
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1.2
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0.3
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0.5
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0-1mm,1-3mm,200mesh
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Y57
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57
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40.3
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0.8
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0.25
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0.1
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0.15
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0.1
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0.2
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0-1mm,1-3mm,200mesh
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Y58
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58
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38.5
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0.8
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0.15
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0.2
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0.1
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0.1
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0.35
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0-1mm,1-3mm,200mesh
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Q1: Is andalusite suitable for low cement castables?
Yes, it is widely used in LCC and ULCC formulations to improve volume stability and thermal shock resistance.
Q2: What particle size should I choose?
1-3 mm and 3-5 mm are commonly used. Final selection depends on your formulation and application.
Q3: Can you supply customized chemical composition or grading?
Yes, customized specifications are available according to customer requirements.
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