Coal Injection Nozzle Castable

Coal Injection Nozzle Castable I. Product Classification and Characteristics Corundum–Silicon Carbide Type (PMC-80) Composition: Electrofused Corundum (≥85%) + Silicon Carbide (8–12%) Temperature Resistance: 1700°C for long‑term use Thermal Shock Resistance: ≥15 cycles (water quenching at 1100°C) Red Silicate Composite Type (PMH-75) Formulation: Red Silicate (30%) + High‑Alumina Bauxite (50%) Characteristics: Excellent high‑temperature volume stability (linear change ≤0.3%) Nano‑Reinforced Innovation: Incorporates 3–5% nano‑Al₂O₃/ZrO₂ Performance: Improves spalling resistance by 50% II. Production Process Raw Material Pre‑Treatment: – Corundum Aggregate: Plasma Activation (increases specific surface area by 30%) – Nanopowders: Ultrasonic Dispersion (agglomeration rate ≤5%) – Microwave Curing Technology: Curing cycle: 8 hours (compared to the traditional 72 hours) – Early Strength: ≥20 MPa (after 24 hours) III. Application Scenarios Typical Operating Conditions & Service Life: Cement Industry: Front end of kiln head burners – 6–9 months Metallurgical Industry: Blast furnace coal injection lances – 4–6 months Power Industry: Pulverized coal boiler burners – 12–18 months Chemical Industry: Gasifier nozzles – 3–5 months IV. Performance Advantages Compared to Traditional Materials Anti‑Coking Performance: Coke formation reduced by 80% Wear Resistance: Compressive strength ≥80 MPa vs. traditional 50 MPa Economic Benefits & Construction Efficiency: – 3D Printing Shortens Construction Time by 70% – Annual Savings on Refractory Material Costs: 35% V. Physicochemical Specifications 1. Physical Properties: – Bulk Density: ≥2.8 g/cm³ (PMC-80) – Apparent Porosity: ≤16% Mechanical Properties: – Compressive Strength (at 1400°C): ≥60 MPa – Flexural Strength (at room temperature): ≥10 MPa High‑Temperature Characteristics: – Load Softening Point (at 0.2 MPa): ≥1650°C – Thermal Shock Stability (at 1100°C): ≥15 cycles Special Indicators: – CO Erosion Resistance (at 1000°C): Weight gain ≤0.5% – Thermal Conductivity (at 800°C): ≤2.5 W/(m·K)

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Refractory castables

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Description:

Coal Injection Nozzle Castable

I. Product Classification and Characteristics

Corundum - Silicon Carbide Type (PMC-80)

Components: Electrofused corundum (≥85%) + silicon carbide (8–12%)
Temperature resistance: Long‑term use at 1700℃
Thermal Shock Resistance: ≥15 cycles (water cooling at 1100℃)

Andalusite composite ( PMH-75)

Formula: Andalusite ( 30%) + high-alumina bauxite (50%)
Features: High-temperature dimensional stability (linear change ≤ 0.3%)

Nano‑enhanced

Innovation: Add 3–5% nano-Al₂O₃/ZrO₂
Performance: Improved resistance to peeling 50%

2. Production Process

Raw Material Preprocessing

Plasma activation of corundum aggregate (increased specific surface area) 30%)
Ultrasonic dispersion of nanomaterial powders (agglomeration rate ≤ 5%)

Microwave Curing Technology

Maintenance cycle: 8 hours (traditional 72 hours)
Early strength: ≥20 MPa (24 h)

3. Application Scenarios

Application Fields	Typical Operating Conditions	Service life
Cement Industry	Front end of the kiln burner	6–9 months
Metallurgical Industry	Blast Furnace Coal Injection Lance	4–6 months
Power Industry	Coal Powder Boiler Burner	12–18 months
Chemical Industry	Gasifier Burner	3–5 months

4. Performance Advantages

Compared with traditional materials

Anti-scaling property: Reduced coking 80%
Wear resistance: Compressive strength ≥80 MPa vs. the traditional 50 MPa

Economic benefits

Construction Efficiency: 3D printing shortens project timelines by 70%.
Maintenance Costs: Annual Savings on Refractory Materials 35%

V. Physicochemical Indicators

1. Physical Properties:

- Bulk density: ≥2.8 g/cm³ ( PMC-80 )

- Apparent porosity: ≤16%

Mechanical Properties:

- Withstand Voltage Strength ( 1400℃ ): ≥60 MPa

- Flexural strength (at room temperature): ≥10 MPa

High-Temperature Properties:

- Load Softening Point ( 0.2MPa ): ≥1650℃

- Thermal shock stability 1100℃ ): ≥15 Next time

Special Indicators:

- Resist CO Erosion ( 1000℃ ): Weight gain ≤0.5%

- Thermal conductivity ( 800℃ ): ≤2.5 W/(m·K)

Keywords:

Coal Injection Nozzle Castable

Lightweight Insulating Castable

Acid-resistant castable

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WhatsApp：8615936268068

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Email：zzjsrefractory@gmail.com

Coal Injection Nozzle Castable

Coal Injection Nozzle Castable

I. Product Classification and Characteristics

2. Production Process

3. Application Scenarios

4. Performance Advantages

V. Physicochemical Indicators

COOKIES

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