$Special Phosphate Composite Refractory Brick$

Special Phosphate Composite Refractory Brick

Phosphate Refractory Bricks I. Main Product Types Standard Phosphate Bricks (P Series): Composition: phosphate-bonded high-alumina bauxite (Al₂O₃ ≥ 65%); Apparent Porosity: 18–22%; Load-Softening Temperature: ≥1300°C. Phosphate Wear-Resistant Bricks (PA Series): Reinforcement Process: bonded with aluminum phosphate solution; Abrasion Index: ≤6 cm³ (ASTM C704); Compressive Strength: ≥50 MPa; Steel-Fiber-Reinforced Type (New Model 2025): Incorporation of 3–5% stainless steel fibers increases thermal-shock resistance to 80 cycles (water cooling at 1100°C) and flexural strength by 120%. II. Intelligent Production Processes Raw-Material Preprocessing System: Grading and crushing of bauxite clinker (optimized particle-size distribution of 1–3 mm); Intelligent formulation of phosphate solution (concentration 42.5–50%); Key Process Control: A [Mixing] → B (maturation for 24 hours at 25°C); B → C [High-Pressure Molding]; C → D (drying at 110°C for 48 hours); D → E [Heat Treatment at 400–600°C]. Green Manufacturing Technology: Low-Temperature Firing (reduces energy consumption by 35% compared with conventional processes); Waste Brick Recycling Rate Reaches 45%. III. Typical Application Scenarios Application Fields and Service Locations Technical Benefits Cement Industry Rotary Kiln Transition Zone: Service Life Extended to 18 Months Metallurgical Industry Blast Furnace Hearth: Resistance to Molten Iron Erosion Improved by 50% Environmental Protection Projects Waste Incinerator: Enhanced Resistance to Chloride Corrosion Chemical Equipment Sulfuric Acid Reactor Lining: Maintenance Interval Extended by a Factor of Three IV. Performance Advantages Compared with Traditional Refractories Thermal-Shock Stability: 50 cycles vs. 10 cycles for High-Alumina Bricks; Wear Resistance: 3.5 Times That of Clay Bricks; Medium-Temperature Strength: At 1000°C, Strength Retention Rate ≥90%; Economic Analysis: Production Cost: 60–70% Lower Than Zirconia-Corundum Bricks; Overall Benefit: Unit Usage Cost Reduced by 45%. V. Physicochemical Specifications (GB/T 2026-P) 1. Basic Properties: Bulk Density: 2.4–2.6 g/cm³; Compressive Strength: ≥35 MPa (PA Type: ≥50 MPa); High-Temperature Characteristics: Linear Change After Reheating: +0.1 to +0.3% (at 1200°C); Alkali-Erosion Resistance: Weight Gain Due to K₂O ≤1.5% (at 1000°C for 50 hours); Special Indicators: Thermal-Shock Resistance: ≥50 Cycles (Steel-Fiber-Reinforced Type); Thermal Conductivity: 1.1 W/(m·K) (at 800°C).

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Firebrick

Phosphate brick

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Description:

Phosphate refractory brick

I. Main Product Types

Standard phosphate brick ( P series)

Composition: Phosphate-bonded high-alumina bauxite ( Al₂O₃ ≥ 65%)
Apparent porosity: 18-22%
Load-softening temperature: ≥1300℃

Phosphate wear-resistant brick ( PA series)

Enhanced process: aluminum phosphate solution combined with
Abrasion resistance index: ≤6 cm³ (ASTM C704)
Compressive strength: ≥50 MPa

Steel-fiber-reinforced ( 2025 new model)

Add 3–5% stainless steel fiber
Thermal shock resistance improved to 80 cycles (water-cooled at 1100℃)
Increased flexural strength 120%

II. Intelligent Production Processes

Raw Material Preprocessing System

Grading and crushing of calcined bauxite ( 1–3 mm gradation optimization)
Intelligent formulation of phosphoric acid solution (concentration 42.5–50%)

Control of Critical Processes

A[ Mix ] --> B( Material shortage 24h/25℃)B --> C[ High-pressure molding ] C --> D(110℃ Dry 48h)D --> E[400-600℃ Heat treatment ]

Green Manufacturing Technology

Low-temperature firing (reducing energy consumption compared with traditional processes) 35%)
Recycling rate of waste bricks 45%

III. Typical Application Scenarios

Application Fields	Part used	Technical Benefits
Cement Industry	Transition Zone of Rotary Kiln	Lifespan extended to 18 months
Metallurgical industry	Blast furnace belly	Iron-melt erosion resistance improved by 50%
Environmental Engineering	Waste incinerator	Chloride Corrosion Resistance
Chemical equipment	Sulfuric Acid Reactor Liner	Maintenance cycle extended by 300%

IV. Performance Advantage Comparison

Comparison with Traditional Refractories

Thermal shock stability: 50 cycles vs. high-alumina brick: 10 cycles
Wear resistance: 3.5 times that of clay bricks
Medium-temperature strength: Strength retention at 1000℃ ≥ 90%

Economic Analysis

Production cost: lower than that of zirconia-alumina bricks. 60-70%
Overall benefits: Reduced unit usage cost 45%

V. Physicochemical Indices ( GB/T 2026-P)

1. Basic Performance:

Bulk density: 2.4–2.6 g/cm³

Withstand Voltage Strength: ≥35MPa （ Public Address type ≥50MPa )

High-temperature characteristics:

Change in the re-burning line: +0.1~+0.3% （ 1200℃ )

Alkali resistance: Potassium oxide Gain weight ≤1.5% （ 1000℃/50h )

Special indicators:

Thermal shock resistance: ≥50 Second (steel-fiber-reinforced)

Thermal conductivity: 1.1 W/(m·K) （ 800°C )

Keywords:

Special Phosphate Composite Refractory Brick

Electrofused Re-bonded Magnesia-Chrome Brick

Special Phosphate Composite Brick

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WhatsApp：8615936268068

Mobile phone：+86-15936268068

Email：zzjsrefractory@gmail.com

Special Phosphate Composite Refractory Brick

Phosphate refractory brick

I. Main Product Types

II. Intelligent Production Processes

III. Typical Application Scenarios

IV. Performance Advantage Comparison

V. Physicochemical Indices ( GB/T 2026-P)

COOKIES

COOKIES

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