75% Al₂O₃ High Alumina Refractory Brick - Fireproof Anti-Spalling Solution For Coke Ovens & Industrial Furnaces

1.Product Overview

This high alumina brick belongs to Grade I High Alumina Refractories (Al₂O₃ content ≥75%), a neutral refractory material with corundum and mullite as main mineral phases. It solves the pain points of traditional refractory bricks (e.g., poor thermal stability, easy spalling) via advanced sintering technology, ensuring long-term stable operation in high-temperature, alternating heat, and slag-eroded environments. Standard size is 230×114×65mm, with full customization support for special shapes (trapezoidal, arch, checkered) to fit diverse furnace structures.

 

2.Key Features

Extreme High-Temp Resistance：Refractoriness ≥1790℃, working temperature 1350-1650℃, 0.2MPa load softening temperature ≥1520℃, no deformation under high heat.

Anti-Spalling & Thermal Stability：Heating line change +0.1~-0.4% (1450℃), withstanding rapid temperature fluctuations without cracking; cold crushing strength ≥50MPa, high load-bearing capacity.

Strong Corrosion Resistance：Neutral material property resists both acid and basic slag erosion, ideal for coke oven carbonization chambers and blast furnace waist linings.

Low Porosity & Durability：Apparent porosity ≤21%, bulk density 2.4-2.5g/cm³, reducing slag penetration and extending service life by 30% compared to ordinary high alumina bricks.

 

3.Technical Parameters

| Parameter | Specification (75% Al₂O₃ Grade) |

|--------------------------|-----------------------------------|

| Al₂O₃ Content | ≥75% |

| Fe₂O₃ Content | ≤2% |

| Refractoriness | ≥1790℃ |

| Working Temperature | 1350-1650℃ |

| Cold Crushing Strength | ≥50MPa |

| Load Softening Temp (0.2MPa) | ≥1520℃ |

| Apparent Porosity | ≤21% |

| Bulk Density | 2.4-2.5g/cm³ |

| Heating Line Change (1450℃) | +0.1~-0.4% |

| Standard Size | 230×114×65mm (customizable) |

 

4.Application Scenarios

Coke Ovens：Lining of carbonization chambers and combustion chambers, resisting high-temperature coke erosion and thermal shock.

Metallurgy Industry：Blast furnace waist/furnace body, hot blast stove heat storage chambers, and electric arc furnace linings, withstanding molten steel and slag impact.

Building Materials Industry：Cement rotary kiln firing zones, glass melting kiln pool walls, resisting clinker melt and glass liquid corrosion.

Chemical & Power Industry：Synthesis ammonia gasification furnaces, waste incineration boiler high-temperature sections, resisting chemical media and flame scouring.

 

5.Service and Support

Customization：Free shape (special-shaped, arch, checkered) and size customization (MOQ 1000kg); Al₂O₃ content adjustable (55%-85%) for different temperature demands.

Pricing & Discounts：1-24 tons: $150-$600/ton; ≥25 tons: negotiable bulk price; $80 off for $1000+ orders.

Samples & Quality Assurance：Free samples (customer covers shipping); 99.5% factory qualification rate, with batch test reports and CE/ISO9001/SGS certifications.

Packaging & Delivery：Standard packaging: pallet + paper board + plastic film (1.5-1.7 tons/pallet); 20ft container loads 25-26 tons; lead time 7 days (1-50,000kg), 72-hour urgent delivery available.

Hot Tags: 75% al₂o₃ high alumina refractory brick - fireproof anti-spalling solution for coke ovens & industrial furnaces, China 75% al₂o₃ high alumina refractory brick - fireproof anti-spalling solution for coke ovens & industrial furnaces suppliers, manufacturers, factory, ceramic blanket for pizza oven, insulating castable refractory cement, refractory brickwork, silica firebrick, small gold smelting furnace, square high heat fire brick