Alumina sic bricks are manufactured using high-quality raw materials such as high-alumina bauxite clinker and silicon carbide. Silica mullite bricks, also known as HMS high-wear-resistant bricks, are specialized refractory materials designed for high abrasion and wear resistance, particularly in high-temperature environments. These bricks combine silica (SiO₂) with mullite (3Al₂O₃·2SiO₂), resulting in a strong, durable material with excellent thermal stability and resistance to chemical corrosion. They are widely used in the cement industry, especially in rotary kilns, due to their superior performance in high-temperature and corrosive environments.
Product Parameters
|
Brand Properties |
SIC60 |
SIC65 |
SIC70 |
|
|
Refractoriness (SK) |
38 |
39 |
39 |
|
|
Apparent Porosity (%) |
16 |
16 |
14 |
|
|
Bulk Density (g/cm3) |
2.5 |
2.7 |
2.8 |
|
|
Cold Crushing Strength (MPa) |
70 |
90 |
110 |
|
|
@1,400℃ Thermal Linear Expansion(%) |
0.74 |
0.59 |
- |
|
|
@1,500℃x2hrs Permanent Linear Change(%) |
±0.2 |
±0.2 |
±0.2 |
|
|
@0.2MPa Refractoriness Under Load(℃) |
1400 |
1560 |
1600 |
|
|
Chemical Composition (%)
|
Al2O3 |
58 |
68 |
70 |
|
SiO2 |
27 |
16.5 |
15 |
|
|
SiC |
6 |
6.5 |
7 |
|
|
Fe2O3 |
1.8 |
1.7 |
1.5 |
|
|
Main Applications |
Lime Kiln Cement Kiln |
|||
Product Usage:
alumina SiC bricks have become indispensable in industries where conventional refractories fail to meet performance and longevity requirements. In ironmaking, they serve as the primary lining material for blast furnace troughs and runner systems, where they withstand continuous contact with 1500°C molten iron while resisting erosion from slag and iron flows. Compared to traditional carbon blocks, they provide 2-3x longer campaign life while eliminating the safety concerns associated with carbon oxidation.
The aluminum industry extensively uses these bricks in:
Holding furnace linings (resisting cryolite penetration)
Launder systems (handling 700-800°C molten aluminum)
Anode baking furnaces (withstanding reducing/oxidizing transitions)
Other critical applications include:
Steel ladle slag lines (resisting CaO-SiO₂-Al₂O₃ slags)
Waste incinerators (handling corrosive ash compositions)
Chemical reactors (for sulfuric acid/petrochemical processes)
Ceramic kiln furniture (for high-temperature sintering)
Product Advantages
High-Temperature Resistance:
These bricks can withstand extreme temperatures, making them suitable for use in cement kilns and rotary kilns
Excellent Wear Resistance
The dense structure of silica mullite bricks provides superior resistance to mechanical wear
Thermal Shock Resistance
The low thermal expansion coefficient of the mullite phase allows the bricks to resist thermal stress during rapid temperature changes
Chemical Stability
Silica mullite bricks maintain stable physical and chemical properties at high temperatures, preventing deformation or cracking
Protective Layer Formation
The brick surface forms a dense protective layer during use, which prevents further erosion and extends the service life of the kiln
Customizable:
Available in various sizes and shapes to meet specific requirements.
Product technology:
Key steps include:
The manufacturing process of silica mullite bricks involves several critical steps. High-quality raw materials such as high-alumina bauxite clinker and silicon carbide are carefully selected and blended. The mixture is then subjected to high-pressure molding to achieve a uniform and dense structure. The formed bricks are subsequently fired at high temperatures to ensure their strength and durability. This process results in bricks with a high degree of crystalline bonding, which enhances their resistance to chemical attack and thermal shock
Why Choose Us?
23+
years experience focus on refractories field
2 plants
with 3 sets of tunnel kilns for 120,000 tonnes capacity
3 QC
Labs Technology Centres
120+ employees
with ISO9001,TUV,SGS,Intertek certifications
100+
abroad customers in 50+ countries
20+
major industry furnace projects yearly
Packing
The packaging is designed to protect the bricks from moisture and physical impact, maintaining their integrity until they reach the end-user. Proper packaging also facilitates easy handling and storage on construction sites or in industrial facilities.
FAQ
Hot Tags: alumina sic brick, China alumina sic brick manufacturers, suppliers, factory, Calcium Silicate Board, High Alumina Bricks, Alumina Bubble Bricks, Refractory Anchor, Sillimanite Bricks, Ceramic Fiber Module
