High Alumina Brick High Refractoriness Al2O3 Content 55% - 85% High Temperature HA60 HA70 HA75 HA80 Customizable Cutting Cement Kiln
Leadsun high alumina bricks are produced with selected bauxite chamotte by advanced process and strict quality control. The main mineral components are corundum and mullite phases. It features excellent high temperature mechanics and chemical corrosion resistance.
|
Item
|
HA60
|
HA70
|
HA75
|
HA80
|
|
AL2O3(%)
|
≥60
|
≥70
|
≥75
|
≥80
|
|
SIO2(%)
|
32
|
22
|
20
|
≥18
|
|
Fe2O3(%)
|
≤2.5
|
≤2.0
|
≤1.8
|
≤1.5
|
|
Refractoriness °C
|
≥1750
|
≥1780
|
≥1800
|
≥1850
|
|
Bulk density,g/cm3
|
2.35-2.4
|
2.45-2.5
|
2.5-2.55
|
2.75-2.8
|
|
Softening temperature under load
|
≥1450
|
≥1510
|
≥1520
|
≥1600
|
|
Apparent porosity,%
|
≤24
|
≤23
|
≤21
|
≤18
|
|
Cold Crushing strength Mpa
|
≥45
|
≥50
|
≥60
|
≥85
|
Advantages:
1. Resisting High Temperature
High-alumina bricks demonstrate exceptional thermal stability, capable of withstanding extreme temperatures up to 1750°C or even higher, depending on their alumina content. This makes them ideal for use in high-temperature industrial environments such as furnaces, kilns, and incinerators. Their ability to maintain structural integrity under intense heat ensures prolonged service life and operational reliability.
2. Great Bulk Density
With a dense and compact structure, high-alumina bricks exhibit high bulk density, typically ranging from 2.5 to 3.0 g/cm³. This characteristic enhances their mechanical strength, load-bearing capacity, and resistance to physical wear and impact. The increased density also contributes to better thermal conductivity, allowing for efficient heat retention and distribution in high-temperature applications.
3. Low Iron Content
High-alumina bricks are manufactured with minimal iron oxide impurities, often containing less than 2% iron content. This low iron composition prevents unwanted reactions and discoloration at high temperatures, ensuring consistent performance and purity in processes where contamination must be avoided. It also improves their refractoriness and resistance to thermal shock.
4. Good Eroding Resistance
These bricks offer excellent resistance to chemical erosion and slag corrosion, particularly in acidic or alkaline environments. Their high alumina content forms a protective layer against molten metals, fluxes, and aggressive gases, minimizing degradation over time. This erosion resistance extends the lifespan of refractory linings in demanding applications such as steelmaking, glass production, and cement kilns.
Applications
1.Steel furnaces
2.Iron making furnaces
3.Glass kiln
4.Ceramic tunnel kiln
5.Cement kiln
Features:
1.low thermal conductivity, good thermal insulation performance.
2.long service life, easy operation, could be shaped freely
3.Product specification: standard form, normal standard, shaped and special shaped bricks.
4.Can be used in various kilns because of its cheapness and general tray package. Among all of the refractory materials, it is the most widely used.
Product Tags:
|
|
High Refractoriness High Alumina Brick Al2O3 Content 55% - 85% High Temperature Cement Kiln Bricks Images
|
