Hubei Zhongnai New Material Technology Co., Ltd.

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DNT-110 Advanced Low Creep Clay Bricks - Superior Thermal Performance & Dimensional Stability for Bottom Checker Applications

Premium DNT-110 low creep clay bricks engineered for bottom checker chamber applications, featuring exceptional creep resistance (0.2% at 1200°C), superior cold crushing strength (≥35 MPa), and outstanding refractoriness under load performance. Optimal solution for lower temperature zones in hot blast stoves.

Key words:

DNT-110

low creep clay bricks

bottom checker chamber

hot blast stove refractories

thermal stability

creep resistance

fire clay bricks

RUL performance

industrial furnace lining

refractory clay materials

Classification:

Refractory materials for metallurgical industry

Refractory brick

Clay Bricks

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DNT-110 Advanced Low Creep Clay Bricks

Superior Thermal Performance & Dimensional Stability for Bottom Checker Applications

0.2% Creep Rate 1200°C Service ≥35 MPa Strength ≥2.1 g/cm³ Density ≥40% Al₂O₃ Bottom Checker

Hubei Zhongnai New Material Technology Co., Ltd.

Advanced Clay Brick Technology

DNT-110 advanced low creep clay bricks represent precision engineering for bottom checker chamber applications in hot blast stoves. Manufactured using premium refractory clay and advanced forming techniques, these bricks deliver exceptional dimensional stability and thermal performance in lower temperature zones whilst maintaining superior mechanical strength.

Ultra-low creep rate: 0.2% (1200°C, 20-50h, 0.2MPa)
Superior cold crushing strength: ≥35 MPa for structural integrity
Optimal bulk density: ≥2.1 g/cm³ for thermal performance
Controlled porosity: ≤22% for enhanced properties
High alumina content: ≥40% Al₂O₃ for excellent refractoriness

Refractoriness Under Load Excellence

Engineered with exceptional refractoriness under load (RUL) performance, DNT-110 clay bricks demonstrate outstanding dimensional stability under combined thermal and mechanical stress. Advanced material composition ensures reliable performance in demanding bottom checker chamber applications with minimal deformation over extended service periods.

Exceptional RUL performance: 1260-1430°C at varying deformation levels
Controlled Fe₂O₃ content: ≤3.5% for optimal properties
Minimal alkali + impurity content for enhanced stability
Superior thermal shock resistance for cyclic operation
Optimised grain structure for enhanced thermal performance

Comprehensive Technical Specifications - DNT-110 Performance Standards

Performance Parameter	Unit	DNT-110 Specification	Testing Standard
Apparent Porosity (AP)	%	≤ 22	ASTM C20
Bulk Density (BD)	g/cm³	≥ 2.1	ASTM C20
Cold Crushing Strength (CCS)	MPa	≥ 35	ASTM C133
Thermal Shock Resistance (TSR)	cycles	1100°C, water quench	EN 993-11
Creep Rate (1200°C, 20-50h, 0.2MPa)	%	0.2	ASTM C832
RUL @ 0.5% Deformation	°C	≥ 1260	ISO 1893
RUL @ 2.0% Deformation	°C	≥ 1360	ISO 1893
RUL @ 5.0% Deformation	°C	≥ 1430	ISO 1893
Fe₂O₃ Content	%	≤ 3.5	XRF Analysis
Al₂O₃ Content	%	≥ 40	XRF Analysis
Primary Application	-	Bottom Part of Checker Chamber	Hot Blast Stove Lower Zone

Specialised Applications & Temperature Zone Performance

DNT-110 advanced low creep clay bricks are specifically engineered for bottom checker chamber applications where reliable thermal performance, dimensional stability, and cost-effectiveness are essential for sustained industrial operation in lower temperature zones of hot blast stoves.

Bottom Checker Chamber Systems

Primary application for lower temperature zones in hot blast stove checker chambers, providing excellent heat storage and transfer capabilities whilst maintaining dimensional stability in the 850°C to 1200°C operating range.

Lower Temperature Zone Regenerators

Optimal solution for regenerative heat exchangers in lower temperature sections where reliable thermal cycling performance and cost-effective operation are critical for long-term industrial efficiency.

Industrial Furnace Foundation Systems

Excellent foundation and structural support applications in industrial furnaces and kilns where superior mechanical strength and thermal stability are required in lower temperature service environments.

Coke Oven Regenerator Applications

Reliable performance in coke oven regenerators and other steel industry thermal management systems operating in moderate temperature ranges requiring excellent thermal shock resistance and dimensional stability.

Performance Advantages & Economic Benefits

Exceptional Dimensional Stability

Low creep rate of 0.2% at 1200°C ensures minimal dimensional change under prolonged thermal and mechanical stress, maintaining structural integrity and preventing system failures in critical applications.

Superior Refractoriness Under Load

Outstanding RUL performance with progressive deformation resistance up to 1430°C provides reliable load-bearing capacity and structural stability under combined thermal and mechanical stress conditions.

Cost-Effective Performance

Optimal balance of performance and cost-effectiveness for lower temperature zone applications, providing reliable service life whilst maintaining competitive operational economics in industrial environments.

Enhanced Thermal Cycling Resistance

Superior thermal shock resistance and thermal cycling performance ensure reliable operation through repeated heating and cooling cycles typical of hot blast stove operational patterns.

Advanced Testing Standards & Quality Assurance

Comprehensive Creep Testing

Rigorous creep testing at 1200°C under 0.2MPa load for 20-50 hours according to ASTM C832 standards, ensuring reliable performance validation and long-term dimensional stability verification.

Refractoriness Under Load Validation

Advanced RUL testing according to ISO 1893 standards with multiple deformation levels (0.5%, 2.0%, 5.0%) providing comprehensive load-bearing performance characterisation under thermal stress.

Thermal Shock Resistance Testing

Comprehensive thermal shock testing at 1100°C with water quenching according to EN 993-11 standards, validating performance under severe thermal cycling conditions typical of industrial operation.

Chemical Composition Control

Precise control of Al₂O₃, Fe₂O₃, and alkali content using advanced XRF analysis and quality control procedures ensuring consistent composition and optimal performance characteristics.