High Alumina Refractory Castable

High Alumina Castable is a monolithic refractory material mainly composed of high alumina aggregates, fine powders, and suitable bonding systems.

Al2O3% ≥ 45

Bulk density g/cm3 ≥ 2.3

Refractoriness, ℃  ≥ 1710

   PRODUCT DESCRIPTION

Introduction

High Alumina Castable is a monolithic refractory material mainly composed of high alumina aggregates, fine powders, and suitable bonding systems. It is supplied as a dry mixture and installed by adding water, mixing, casting, vibrating, and curing according to specific application requirements.


Compared with traditional refractory bricks, High Alumina Castable can form monolithic refractory linings with reduced joints, making it suitable for complex structures, irregular furnace geometries, and repair applications. Through optimized particle size distribution, advanced bonding technology, and dense microstructure design, the product provides reliable performance in high-temperature environments.


With high alumina content, good refractoriness, high mechanical strength, abrasion resistance, thermal shock resistance, and resistance to slag penetration and chemical attack, High Alumina Castable can maintain stable performance under demanding operating conditions when properly selected according to service conditions.


Sunrise provides different grades of High Alumina Castable according to furnace structure, operating temperature, chemical environment, and application requirements.


Features

High alumina content and good refractoriness.

High mechanical strength and good abrasion resistance.

Good resistance to slag penetration and chemical attack under suitable service conditions.

Dense structure with low porosity and good resistance to penetration.

Good thermal shock resistance and volume stability.

Monolithic lining structure with reduced weak points caused by refractory joints.

Suitable for complex shapes, equipment repair, and customized refractory construction.

Easy installation with good workability when properly mixed and installed.



Applications

Iron and Steel Industry:

Ladles, tundishes, blast furnace runners, iron troughs, reheating furnaces, walking beam furnaces, and ladle covers.


Cement Industry:

Rotary kilns, kiln hoods, cooler areas, burner pipes, tertiary air ducts, preheaters, and calciners.


Non-ferrous Metal Industry:

Aluminum melting furnaces, holding furnaces, launders, runner channels, and degassing equipment.


Petrochemical Industry:

High-temperature processing equipment, reformers, cracking furnaces, gasifiers, thermal oxidizers, and related refractory linings.


Power Generation and Waste Treatment:

CFB boilers, coal-fired boilers, waste incinerators, biomass boilers, cyclone separators, and combustion chambers.


Industrial Furnace:

Heat treatment furnaces, ceramic kilns, glass furnace non-contact areas, burner blocks, furnace covers, and hearth areas.

   TECHNIQUE DATA

ItemBehaviors
ChemicalCompositionAl2O3 456070758090
Bulk Density g/cm3 ≥2.32.52.62.652.73
Modulus of Rupture Mpa110℃×24h ≥58991012
Compressive Strength Mpa
110℃×24h ≥ 304040454560
1450℃×3h ≥608080859085
Refractoriness, ℃  ≥171017401790179017901790
Working Temp, ℃145014501500155016001650
Packaging25kg/bag25kg/bag25kg/bag25kg/bag25kg/bag25kg/bag


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