High Alumina Brick
The high alumina brick is a specialized refractory component used to suspend and support electrical heating elements (such as resistance wire spirals or flat ribbons) inside an industrial furnace. It is typically made from high-purity alumina material and features protruding "teeth," "fingers," or "points" that hold the heating element in a specific position, ensuring it remains isolated from the furnace wall and maintains its designed shape.
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Product Definition
The high alumina brick is a specialized refractory component used to suspend and support electrical heating elements (such as resistance wire spirals or flat ribbons) inside an industrial furnace. It is typically made from high-purity alumina material and features protruding "teeth," "fingers," or "points" that hold the heating element in a specific position, ensuring it remains isolated from the furnace wall and maintains its designed shape.
Working Principle
The high alumina brick is installed inside the furnace lining. Heating wires are embedded into the pointed grooves of the brick, which keeps the resistance elements properly positioned and evenly spaced.
This structure ensures that the heating wires do not sag or deform at high temperatures, maintaining uniform heat distribution and stable furnace performance. The high-alumina material provides excellent thermal resistance and insulation, protecting both the heating elements and furnace structure.
Features
Avoid leakage and short circuits for safe heating operation.
High-purity alumina withstands 1400℃-1600℃ high temperature.
Special shape firmly fixes heating elements against displacement.
Anti-oxidation, no reaction with heating alloys for longer service life.
Open structure enhances heat transfer efficiency.
Applications
The high alumina brick is widely used in many fields,including:
- Heat Treatment Furnaces:Box, car-bottom and pit electric furnaces.
- Ceramic Kilns:Supports fixtures and heaters in high-temp sintering.
- Laboratory Furnaces:Precision heating for lab testing.
- Industrial Ovens:High-temperature drying and curing application.
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