Hubei Zhongnai New Material Technology Co., Ltd.

Language

DGL-125 Ultra-Low Creep High Alumina Checker Bricks - Superior Thermal Stability & Hot Blast Stove Performance

Premium DGL-125 low creep high alumina checker bricks with exceptional creep resistance (≤0.8%), high bulk density (≥2.15 g/cm³), and superior refractoriness (≥1750°C). Engineered for hot blast stove regenerator applications with outstanding thermal stability.

Key words:

DGL-125 Low creep high alumina bricks

low creep high alumina bricks

checker bricks

hot blast stove refractories

DGL-125

regenerator bricks

thermal stability

creep resistant bricks

blast furnace refractories

high temperature bricks

alumina checker bricks

Classification:

Refractory materials for metallurgical industry

Refractory brick

High Alumina Brick

Product inquiry

DGL-125 Ultra-Low Creep High Alumina Checker Bricks

Superior Thermal Stability & Performance for Hot Blast Stove Applications

≤0.8% Creep Rate ≥1750°C Refractoriness ≥2.15 g/cm³ Density ≤20% Porosity

Hubei Zhongnai New Material Technology Co., Ltd.

Advanced Low Creep Technology

DGL-125 ultra-low creep high alumina checker bricks represent the pinnacle of refractory engineering for hot blast stove regenerator applications. Engineered with advanced material science principles, these bricks deliver exceptional dimensional stability under extreme thermal and mechanical stress conditions.

Ultra-low creep rate: ≤0.8% (1250°C, 50h, 0.2MPa)
High bulk density: ≥2.15 g/cm³ for superior structural integrity
Exceptional refractoriness: ≥1750°C service temperature
Optimised porosity: ≤20% for enhanced thermal performance
Superior cold crushing strength: ≥50 MPa

Precision Engineering Excellence

Manufactured using premium high-alumina bauxite and advanced forming techniques, DGL-125 bricks incorporate state-of-the-art thermal management technology. The specialised checker brick configuration maximises heat transfer efficiency whilst maintaining structural integrity throughout extended service cycles.

High alumina content: ≥48% Al₂O₃ for enhanced performance
Controlled Fe₂O₃ content: ≤1.5% for optimal purity
Precision-engineered checker design for optimal heat exchange
Excellent thermal shock resistance for cyclic operation
Enhanced corrosion resistance to industrial atmospheres

Technical Specifications - DGL-125 Performance Standards

Performance Parameter	Unit	DGL-125 Specification	Test Standard
Apparent Porosity (AP)	%	≤ 20	ASTM C20
Bulk Density (BD)	g/cm³	≥ 2.15	ASTM C20
Creep Rate (1250°C, 50h, 0.2MPa)	%	≤ 0.8 (or 0.6)	ASTM C832
Refractoriness	°C	≥ 1750	ASTM C24
Cold Crushing Strength (CCS)	MPa	≥ 50	ASTM C133
Al₂O₃ Content	%	≥ 48	XRF Analysis
Fe₂O₃ Content	%	≤ 1.5	XRF Analysis
Primary Application	-	Middle Part Checker Chamber	Hot Blast Stove Regenerator

Industrial Applications & Performance Zones

DGL-125 ultra-low creep high alumina checker bricks are specifically engineered for demanding thermal applications where exceptional dimensional stability and heat transfer efficiency are critical for operational success.

Hot Blast Stove Regenerators

Primary application in middle and upper sections of hot blast stove checker chambers, providing optimal heat storage and transfer for blast furnace air preheating systems.

Steel Industry Heat Recovery

Essential components in regenerative heat exchangers, coke oven regenerators, and other steel industry thermal management systems requiring superior creep resistance.

Glass Industry Regenerators

High-performance checker bricks for glass furnace regenerative chambers, providing efficient heat recovery whilst maintaining structural integrity under thermal cycling.

Ceramic Tunnel Kilns

Advanced refractory solutions for ceramic industry tunnel kilns and other high-temperature industrial processes requiring exceptional thermal stability.

Advanced Material Science & Testing Standards

Creep Testing Protocol

Rigorous testing at 1250°C under 0.2MPa load for 50 hours, conforming to international ASTM C832 standards for accurate creep rate determination.

Thermal Cycling Performance

Superior resistance to thermal shock and thermal cycling, essential for the periodic heating and cooling cycles in hot blast stove operations.

Microstructural Optimisation

Advanced phase composition with optimised corundum and mullite crystal structure, providing enhanced high-temperature mechanical properties.

Quality Assurance

Comprehensive quality control including chemical analysis, physical testing, and dimensional verification ensuring consistent performance characteristics.

Performance Advantages & Economic Benefits

Exceptional Dimensional Stability

Ultra-low creep rate ensures minimal dimensional change under prolonged high-temperature service, maintaining structural integrity and preventing system failures that could result in costly downtime.

Extended Service Life

Superior material properties and advanced manufacturing processes deliver exceptional longevity, reducing replacement frequency and maintenance costs whilst maximising operational efficiency.

Enhanced Heat Transfer Efficiency

Optimised checker brick design maximises surface area for heat exchange whilst maintaining excellent thermal conductivity, improving overall system thermal efficiency and energy conservation.

Reliable Industrial Performance

Consistent quality and performance characteristics ensure predictable operation, reducing risk of unexpected failures and supporting continuous industrial production requirements.