Products
Sintered zirconia-alumina brick
Sintered Zirconia–Alumina Refractory Bricks I. Main Product Types Standard Type (AZS-33): ZrO₂ content: 33±2% (stabilized); Al₂O₃: 45–50%; SiO₂ ≤16%; bulk density: 3.8–4.0 g/cm³ High-Density Type (AZS-HD): apparent porosity ≤12% (produced by ultra-high-pressure forming); glass erosion resistance improved by 40%; thermal shock resistance: ≥25 cycles (water quenching at 1100℃). 2025 New Gradient Composite Brick—Sandwich Structure: Working Face: 40% ZrO₂ + α-Al₂O₃ nanolayer; Transition Layer: mullite network structure; Backing Layer: porous corundum. II. Intelligent Production Processes Raw Material Pre-treatment: Plasma decomposition of zircon sand (ZrO₂ purity ≥99.5%); microwave activation of industrial alumina (α-phase conversion rate ≥95%); digital forming—isostatic pressing (300 MPa, ±0.3 mm accuracy); 3D printing of complex-shaped components (minimum wall thickness 3 mm); low-carbon firing technology—hydrogen-fueled tunnel kiln (1750℃ ±5℃); waste-heat power generation system (energy consumption reduced by 30%). III. Core Application Areas Application Industries Typical Components Technical Benefits Optoelectronic Displays High-alumina glass melting furnace—flow channel life 8–10 years New Energy Photovoltaic glass—tin bath energy consumption reduced by 25% Aerospace Rocket engine linings—temperature resistance up to 2200℃ Environmental Hazardous Waste Melting Furnaces—slag resistance improved by 60% IV. Performance Advantages Compared with Traditional Electrofused Bricks Thermal Shock Resistance: 35 cycles vs. 15 cycles Dimensional Accuracy: ±0.2 mm vs. ±1.0 mm Carbon Emissions: 1.2 tCO₂/t vs. 2.8 tCO₂/t Economic Analysis Initial Cost: 40–50% lower than electrofused AZS Maintenance Interval: 7 years without major overhauls V. Latest Physicochemical Specifications 1. Basic Properties (AZS-33): — Refractoriness: ≥1790℃ (GB/T 7322-2025) — Compressive Strength: ≥150 MPa (ISO 10059-2:2026) High-Temperature Characteristics: — Load Softening Point: ≥1700℃ (0.2 MPa) — Glass Erosion Resistance: ≤1.0 mm/24 h (1500℃) Special Indicators: — Thermal Conductivity: 2.3 W/(m·K) (1000℃) — Radioactivity: Internal Radiation Index ≤0.5
Chromium Corundum Special-Shaped Brick
Chromium Corundum Refractory Bricks I. Product Types and Grades 1. Standard Series CC-15 Series (Basic Type): Composition: Cr₂O₃ 12–15%, Al₂O₃ ≥80%; Bulk Density: 3.2–3.4 g/cm³; Service Temperature: ≤1600℃. CC-25 Series (High-Performance Type): Cr₂O₃ content 20–25%, with nano-ZrO₂ added; Thermal Shock Resistance: ≥30 cycles (water quenching at 1100℃); Load Softening Point: ≥1750℃. 2. New Composite Products—Core Innovations: Performance Enhancement through Gradient Structure: Cr₂O₃ content graded from 15% to 30%; Gradient Distribution for Improved Erosion Resistance by 50%; Nano-Modified Version: Addition of 5 nm Cr₂O₃-coated corundum particles, increasing strength by 80%; Porous Energy-Saving Type: Closed-pore porosity 25–30%, thermal conductivity reduced by 40%. II. Intelligent Production Process 1. Raw Material Processing: Plasma-activated chromium oxide powder (Cr₂O₃ ≥99.5%); AI-based raw material batching system (composition variation ≤0.3%). 2. Forming Process: # Digital forming parameters—pressure = 200–250 MPa; # Isostatic pressing pressure—hold_time = 90–120 s; # Holding time—temperature = 25 ± 2℃; # Forming temperature control. 3. Firing Technology: Hydrogen-powered tunnel kiln (1750–1800℃); waste heat recovery power generation system (energy savings of 30%). Typical Application Scenarios: Core High-Temperature Industrial Equipment **Nonferrous Metallurgy**: Copper Flash Smelting Furnace (service life 8–10 years); **Chemical Industry**: Coal Gasification Furnace (pressure resistance ≥15 MPa); **Environmental Protection**: Hazardous Waste Melting Furnace (slag resistance improved by 60%). Emerging Fields in 2026: Hydrogen Energy—high-temperature components for electrolyzers (hydrogen embrittlement resistance); Aerospace—reusable engine linings; Nuclear Energy—isolation layers for Generation IV reactors. IV. Performance Advantage Comparison ### Comparative Analysis with Traditional Materials | Indicator | CC-25 Type | Magnesia-Chrome Brick | Improvement Margin || Copper Matte Erosion | 0.8 mm/month | 2.5 mm/month | +68% || High-Temperature Strength | 45 MPa | 28 MPa | +60% || Maintenance Costs | ¥8,000/year | ¥20,000/year | Savings of 60% | Latest Physicochemical Indices (GB/T 2026–CC) 1. Basic Performance—Refractoriness: ≥1850℃; Room-Temperature Compressive Strength: ≥150 MPa (CC-25 type); Apparent Porosity: ≤18% (standard type). 2. High-Temperature Characteristics: Thermal Shock Stability: ≥25 cycles (water quenching at 1100℃). 3. Creep Resistance: Deformation at 1600℃/50 h ≤0.5%. 4. Slag Resistance Testing: Copper Slag Erosion: ≤1.2 mm/100 h (at 1250℃); Alkali Vapor Erosion: Weight Gain ≤0.6%. 3. Safety and Environmental Indicators: Hexavalent Chromium Release: ≤0.05 mg/m² (EN 12485–2025); Radioactivity: Internal Radiation Index ≤0.3.
Electrofused Chromia-Alumina Sliding Rail Bricks for Steel-Handling Metallurgical Furnaces
Chromium Corundum Refractory Bricks I. Product Types and Grades 1. Standard Series CC-15 Series (Basic Type): Composition: Cr₂O₃ 12–15%, Al₂O₃ ≥80%; Bulk Density: 3.2–3.4 g/cm³; Service Temperature: ≤1600℃. CC-25 Series (High-Performance Type): Cr₂O₃ content 20–25%, with nano-ZrO₂ added; Thermal Shock Resistance: ≥30 cycles (water quenching at 1100℃); Load Softening Point: ≥1750℃. 2. New Composite Products—Core Innovations: Performance Enhancement through Gradient Structure: Cr₂O₃ content graded from 15% to 30%; Gradient Distribution for Improved Erosion Resistance by 50%; Nano-Modified Type: Addition of 5 nm Cr₂O₃-coated corundum particles, increasing strength by 80%; Porous Energy-Saving Type: Closed-pore porosity of 25–30%, reducing thermal conductivity by 40%. II. Intelligent Production Process 1. Raw Material Processing: Plasma-activated chromium oxide powder (Cr₂O₃ ≥99.5%); AI-based raw material batching system with compositional variation ≤0.3%. 2. Forming Process: # Digital forming parameters—pressure = 200–250 MPa; # Isostatic pressing pressure—hold time = 90–120 s; # Holding time—temperature = 25 ± 2℃; # Forming temperature control. 3. Sintering Technology: Hydrogen-powered tunnel kiln (1750–1800℃); waste heat recovery power generation system (30% energy savings). Typical Application Scenarios: Core High-Temperature Industrial Equipment **Nonferrous Metallurgy**: Copper Flash Smelting Furnace (service life 8–10 years); **Chemical Industry**: Coal Gasification Furnace (pressure resistance ≥15 MPa); **Environmental Protection**: Hazardous Waste Melting Furnace (slag resistance improved by 60%). Emerging Fields in 2026: Hydrogen Energy—High-Temperature Components for Electrolyzers (resistant to hydrogen embrittlement); Aerospace—Reusability Engine Liners; Nuclear Energy—Isolation Layers for Fourth-Generation Reactors. IV. Performance Advantage Comparison ### Comparative Analysis with Traditional Materials | Indicator | CC-25 Type | Magnesia-Chrome Brick | Improvement Margin || Copper Matte Erosion | 0.8 mm/month | 2.5 mm/month | +68% || High-Temperature Strength | 45 MPa | 28 MPa | +60% || Maintenance Costs | ¥8,000/year | ¥20,000/year | Savings of 60% | Latest Physicochemical Indices (GB/T 2026–CC) 1. Basic Performance—Refractoriness: ≥1850℃; Room-Temperature Compressive Strength: ≥150 MPa (CC-25 type); Apparent Porosity: ≤18% (standard type). 2. High-Temperature Characteristics: Thermal Shock Stability: ≥25 cycles (water quenching at 1100℃). 3. Creep Resistance: Deformation ≤0.5% after 50 hours at 1600℃. 4. Slag Resistance Testing: Copper Slag Erosion: ≤1.2 mm/100 h (at 1250℃); Alkali Vapor Erosion: Weight Gain ≤0.6%. 3. Safety and Environmental Indicators: Hexavalent Chromium Release: ≤0.05 mg/m² (EN 12485–2025); Radioactivity: Internal Radiation Index ≤0.3.
Chromium Corundum Refractory Bricks I. Product Types and Grades 1. Standard Series CC-15 Series (Basic Type): Composition: Cr₂O₃ 12–15%, Al₂O₃ ≥80%; Bulk Density: 3.2–3.4 g/cm³; Service Temperature: ≤1600℃. CC-25 Series (High-Performance Type): Cr₂O₃ content 20–25%, with nano-ZrO₂ added; Thermal Shock Resistance: ≥30 cycles (water quenching at 1100℃); Load Softening Point: ≥1750℃. 2. New Composite Products—Core Innovation Points: Performance Enhancement via Gradient Structure: Cr₂O₃ content graded from 15% to 30%; Gradient Distribution for Improved Erosion Resistance by 50%; Nano-Modified Type: Addition of 5 nm Cr₂O₃-coated corundum particles, increasing strength by 80%; Porous Energy-Saving Type: Closed-pore porosity of 25–30%, reducing thermal conductivity by 40%. II. Intelligent Production Process Flow 1. Raw Material Processing: Plasma-activated chromium oxide powder (Cr₂O₃ ≥99.5%); AI-based raw material batching system (composition variation ≤0.3%). 2. Forming Process: # Digital forming parameters—pressure = 200–250 MPa; # Isostatic pressing pressure—hold_time = 90–120 s; # Holding time—temperature = 25 ± 2℃; # Forming temperature control. 3. Firing Technology: Hydrogen-powered tunnel kiln (1750–1800℃); waste heat recovery power generation system (energy savings of 30%). Typical Application Scenarios: Core High-Temperature Industrial Equipment **Nonferrous Metallurgy**: Copper Flash Smelting Furnace (service life 8–10 years); **Chemical Industry**: Coal Gasification Furnace (pressure resistance ≥15 MPa); **Environmental Protection**: Hazardous Waste Melting Furnace (slag resistance improved by 60%). Emerging Fields in 2026: Hydrogen Energy: High-Temperature Components for Electrolyzers (hydrogen embrittlement resistance); Aerospace: Reusable Engine Liners; Nuclear Energy: Containment Layers for Fourth-Generation Reactors. IV. Performance Advantage Comparison ### Comparative Analysis with Traditional Materials | Indicator | CC-25 Type | Magnesia-Chrome Brick | Improvement Margin || Copper Matte Erosion Resistance | 0.8 mm/month | 2.5 mm/month | +68% || High-Temperature Strength | 45 MPa | 28 MPa | +60% || Maintenance Costs | ¥8,000/year | ¥20,000/year | Savings of 60% | Latest Physicochemical Indices (GB/T 2026–CC) 1. Basic Performance—Refractoriness: ≥1850℃; Room-Temperature Compressive Strength: ≥150 MPa (CC-25 type); Apparent Porosity: ≤18% (standard type). 2. High-Temperature Characteristics: Thermal Shock Stability: ≥25 cycles (water quenching at 1100℃). 3. Creep Resistance: Deformation at 1600℃/50 h ≤0.5%. 4. Slag Resistance Testing: Copper Slag Erosion: ≤1.2 mm/100 h (at 1250℃); Alkali Vapor Erosion: Weight Gain ≤0.6%. 3. Safety and Environmental Indicators: Hexavalent Chromium Release: ≤0.05 mg/m² (EN 12485–2025); Radioactivity: Internal Radiation Index ≤0.3.
Chromium Corundum Refractory Bricks I. Product Types and Grades 1. Standard Series CC-15 Series (Basic Type): Composition: Cr₂O₃ 12–15%, Al₂O₃ ≥80%; Bulk Density: 3.2–3.4 g/cm³; Service Temperature: ≤1600℃. CC-25 Series (High-Performance Type): Cr₂O₃ content 20–25%, with nano-ZrO₂ added; Thermal Shock Resistance: ≥30 cycles (water quenching at 1100℃); Load Softening Point: ≥1750℃. 2. New Composite Products—Core Innovations: Performance Enhancement through Gradient Structure: Cr₂O₃ content graded from 15% to 30%; Gradient Distribution for Improved Erosion Resistance by 50%; Nano-Modified Type: Addition of 5-nm Cr₂O₃-coated corundum particles, increasing strength by 80%; Porous Energy-Saving Type: Closed-pore porosity of 25–30%, reducing thermal conductivity by 40%. II. Intelligent Production Process 1. Raw Material Processing: Plasma-activated chromium oxide powder (Cr₂O₃ ≥99.5%); AI-based raw material batching system with compositional variation ≤0.3%. 2. Forming Process: # Digital forming parameters—pressure = 200–250 MPa; # Isostatic pressing pressure—hold_time = 90–120 s; # Holding time—temperature = 25 ± 2℃; # Forming temperature control. 3. Firing Technology: Hydrogen-powered tunnel kiln (1750–1800℃); waste heat recovery power generation system (30% energy savings). Typical Application Scenarios: Core High-Temperature Industrial Equipment **Nonferrous Metallurgy**: Copper Flash Smelting Furnace (service life 8–10 years); **Chemical Industry**: Coal Gasification Furnace (pressure resistance ≥15 MPa); **Environmental Protection**: Hazardous Waste Melting Furnace (slag resistance improved by 60%). Emerging Fields in 2026: Hydrogen Energy—High-Temperature Components for Electrolyzers (hydrogen embrittlement resistance); Aerospace—Reusability Engine Liners; Nuclear Energy—Fourth-Generation Reactor Containment Layers. IV. Performance Advantage Comparison ### Comparative Analysis with Traditional Materials | Indicator | CC-25 Type | Magnesia-Chrome Brick | Improvement Margin || Copper Matte Erosion | 0.8 mm/month | 2.5 mm/month | +68% || High-Temperature Strength | 45 MPa | 28 MPa | +60% || Maintenance Costs | ¥8,000/year | ¥20,000/year | Savings of 60% | Latest Physicochemical Indices (GB/T 2026–CC) 1. Basic Performance—Refractoriness: ≥1850℃; Room-Temperature Compressive Strength: ≥150 MPa (CC-25 type); Apparent Porosity: ≤18% (standard type). 2. High-Temperature Characteristics: Thermal Shock Stability: ≥25 cycles (water quenching at 1100℃). 3. Creep Resistance: Deformation at 1600℃/50 h ≤0.5%. 4. Slag Resistance Testing: Copper Slag Erosion: ≤1.2 mm/100 h (at 1250℃); Alkali Vapor Erosion: Weight Gain ≤0.6%. 3. Safety and Environmental Indicators: Hexavalent Chromium Release: ≤0.05 mg/m² (EN 12485–2025); Radioactivity: Internal Radiation Index ≤0.3.
Zirconia-chrome corundum brick
Zirconia-Chromium Corundum Refractory Bricks I. Product Types and Characteristics Standard Grade (ZCr-15 Series): Composition: ZrO₂ 8–12%, Cr₂O₃ 12–15%, with the remainder Al₂O₃ Bulk Density: 3.35–3.55 g/cm³ Service Temperature: ≤1700℃ High-Zirconia Grade (ZCr-30 Series): ZrO₂ content: 25–30% (utilizing nano-stabilization technology) Glass erosion resistance improved by a factor of three Apparent Porosity: ≤16% Gradient Composite Type (New Technology 2025): Sandwich Structure: Working Surface: ZrO₂ ≥40% (Erosion‑Resistant Layer) Transition Layer: Cr₂O₃ 15% (Thermal Shock‑Resistant Layer) Backing Layer: Porous Corundum (Insulation Layer) II. Advanced Production Processes Raw Material Pre‑Processing: Zircon sand undergoes plasma decomposition to achieve ZrO₂ purity ≥99.5%. Chromium‑aluminum slag is recycled and reused, with a Cr₂O₃ recovery rate exceeding 95%. Intelligent Mixing System: Three‑dimensional motion mixing ensures uniformity with a coefficient of variation (CV) ≤0.5%. Nano‑Coating Technology: Suppresses ZrO₂ phase transformations. Ultra‑High‑Pressure Forming: Isostatic pressing at 300–350 MPa. Digital Simulation for Optimal Particle Size Distribution. Special Sintering Process: Nitrogen‑Protected Sintering at 1800–1850℃; Microwave‑Assisted Sintering reduces energy consumption by 35%. III. Typical Applications in 2026 Application Areas | Service Locations | Technical Benefits ——————————————————————————————————————— Specialty Glass: High‑Alumina Glass Melting Furnaces – Liquid Flow Channel Lifespan Extended to 8 Years New Energy Photovoltaic Glass: Tin Bath Pollution Reduced by 50% Aerospace Rocket Engine Linings: Temperature Resistance Up to 2000℃ Environmental Hazardous Waste Melting Furnaces: Slag Resistance Improved by 70% IV. Performance Advantages Compared to Traditional Materials Thermal Shock Resistance: 50 cycles vs. 15 cycles (water quench at 1100℃) Erosion Resistance: Glass erosion rate of 0.3 mm/year vs. 1.2 mm/year Service Life: 8–10 years vs. 3–5 years Economic Benefit Analysis: Initial Cost: 20–30% higher than AZS bricks Total Cost: 40% lower (based on annual consumption costs) V. Latest Physicochemical Specifications (GB/T 2026–ZCr) 1. Basic Performance: – Refractoriness: ≥1790℃ – Compressive Strength at Room Temperature: ≥120 MPa (for ZCr‑30 grade) 2. High‑Temperature Properties: – Load Softening Point (0.2 MPa): ≥1720℃ – High‑Temperature Flexural Strength (1600℃): ≥18 MPa 3. Special Indicators: – Lead Erosion Resistance (1300℃): ≤0.5 mm/100 h – Thermal Conductivity (1000℃): 2.1 W/(m·K)
Sintered Corundum Refractory Bricks I. Main Product Types and Characteristics (Classified by Al₂O₃ Content and Additives) Standard Type (SG-95 Series): Al₂O₃ content 94–96%; apparent porosity 14–16%; softening temperature under load ≥1700℃; applicable temperature ≤1650℃. Low-Porosity Type (SD-98 Series): Closed-pore technology (porosity ≤12%); outstanding high‑temperature creep resistance—creep rate at 1600℃ <0.3%/50h. Chromium-Corundum Composite Type (SCr-20 Series): Cr₂O₃ addition 15–20%; slag resistance increased by a factor of three; suitable for strongly reducing atmospheres. II. Modern Production Process Flow The raw material pre‑processing system employs laser particle size sorting (with ≥85% of particles falling within the 200–325 mesh range) and nanocoating modification technology (to enhance sintering activity), along with intelligent pressing and isostatic forming. Isostatic pressing pressure: 200–250 MPa; digital twin simulation optimizes particle gradation; full-oxygen combustion tunnel kiln firing at 1750–1800℃ (±5℃); intelligent temperature control system (with independent regulation in 30 zones); firing cycle shortened to 36 hours (compared to the traditional 72 hours). Post‑processing technologies include microwave‑assisted sintering (increasing density by 5%) and surface nanocoating (enhancing erosion resistance by 40%). III. Application Fields Typical Equipment in Relevant Industries | Service Life | Energy Savings | New Energy Batteries – Ternary Material Sintering Kiln: 18–24 months; electricity consumption reduced by 22%. Electronic Glass – High-Alumina Glass Melting Furnace: 5–7 years; fuel savings of 15%. Chemical Industry – Ethylene Glycol Reactor: Overhaul cycle extended by 100,000 hours + 50%. Hydrogen Energy – Hydrogen Storage Tank Insulation Layer: Heat loss reduced by 30%. IV. Comparative Performance Analysis Compared with traditional electrofused bricks: Thermal Shock Resistance: 35 cycles vs. 15 cycles (water quench at 1100℃); Dimensional Accuracy: ±0.3 mm vs. ±1.2 mm; Cost Advantage: 40–50% lower; Compared with competing materials: Thermal Conductivity: 2.8 W/m·K (superior to silicon carbide bricks); CO Erosion Resistance: Weight gain of 0.5% vs. 2.1% (high‑alumina bricks). V. Physicochemical Specifications 1. Basic Performance: – Bulk Density: 3.25–3.40 g/cm³ – Compressive Strength at Room Temperature: ≥150 MPa (SD-98 Series) 2. High-Temperature Properties: – Flexural Strength (at 1600℃): ≥25 MPa – Coefficient of Thermal Expansion (at 1000℃): 0.68–0.72% 3. Special Indicators: – Alkali Erosion Resistance (K₂CO₃/1400℃): ≤1.2 mm penetration/100 h – Microwave Loss Tangent: tanδ ≤ 0.0015 (5G frequency band)
Corundum-mullite refractory brick
Sintered Corundum Refractory Bricks I. Main Product Types and Characteristics (Classified by Al₂O₃ Content and Additives) Standard Type (SG-95 Series): Al₂O₃ content 94–96%; apparent porosity 14–16%; softening temperature under load ≥1700℃; applicable temperature ≤1650℃. Low-Porosity Type (SD-98 Series): Closed-pore technology (porosity ≤12%); outstanding high‑temperature creep resistance—creep rate at 1600℃ <0.3%/50h. Chromium-Corundum Composite Type (SCr-20 Series): Cr₂O₃ addition 15–20%; slag resistance increased by a factor of three; suitable for strongly reducing atmospheres. II. Modern Production Process Flow The raw material pre‑processing system employs laser particle size sorting (with ≥85% of particles falling within the 200–325 mesh range) and nanocoating modification technology (to enhance sintering activity), along with intelligent pressing and isostatic forming. Isostatic pressing pressure: 200–250 MPa; digital twin simulation optimizes particle gradation; full-oxygen combustion tunnel kiln firing temperature: 1750–1800℃ (±5℃); intelligent temperature control system (with independent regulation in 30 zones); firing cycle shortened to 36 hours (compared to the traditional 72 hours). Post‑processing technologies include microwave‑assisted sintering (increasing density by 5%) and surface nanocoating (enhancing erosion resistance by 40%). III. Application Fields Typical Equipment in Relevant Industries | Service Life | Energy-Saving Benefits New Energy Battery Ternary Material Sintering Kiln: 18–24 months; electricity consumption reduced by 22%. Electronic Glass & High-Alumina Glass Melting Furnace: 5–7 years; fuel savings of 15%. Chemical Industry Ethylene Glycol Reactor: Overhaul cycle extended by 50%, with a 100,000‑hour service life. Hydrogen Energy Hydrogen Storage Tank Insulation Layer: Heat loss reduced by 30%. IV. Comparative Performance Analysis Compared with traditional electrofused bricks: Thermal Shock Resistance: 35 cycles vs. 15 cycles (water quench at 1100℃); Dimensional Accuracy: ±0.3 mm vs. ±1.2 mm; Cost Advantage: 40–50% lower; Compared with Competitive Materials: Thermal Conductivity: 2.8 W/m·K (superior to silicon carbide bricks); CO Erosion Resistance: Weight gain of 0.5% vs. 2.1% (high-alumina bricks). V. Physicochemical Indicators 1. Basic Performance: – Bulk Density: 3.25–3.40 g/cm³ – Compressive Strength at Room Temperature: ≥150 MPa (SD-98 Series) 2. High-Temperature Properties: – Flexural Strength (at 1600℃): ≥25 MPa – Thermal Expansion Rate (at 1000℃): 0.68–0.72% 3. Special Indicators: – Alkali Erosion Resistance (K₂CO₃/1400℃): ≤1.2 mm penetration/100 h – Microwave Loss Tangent: tanδ ≤ 0.0015 (5G frequency band)
Sintered Corundum Refractory Bricks I. Main Product Types and Characteristics (Classified by Al₂O₃ Content and Additives) Standard Type (SG-95 Series): Al₂O₃ content 94–96%; apparent porosity 14–16%; softening temperature under load ≥1700℃; applicable temperature ≤1650℃. Low-Porosity Type (SD-98 Series): Closed-pore technology (porosity ≤12%); outstanding high‑temperature creep resistance—creep rate at 1600℃ <0.3%/50h. Chromium-Corundum Composite Type (SCr-20 Series): Cr₂O₃ addition of 15–20%; slag resistance increased by a factor of three; suitable for strongly reducing atmospheres. II. Modern Production Process Flow The raw material pre‑processing system employs laser particle size sorting (with ≥85% of particles falling within the 200–325 mesh range) and nanocoating modification technology (to enhance sintering activity), along with intelligent pressing and isostatic forming. Isostatic pressing pressure: 200–250 MPa; digital twin simulation for optimized particle gradation; full-oxygen combustion in a tunnel kiln, firing temperature 1750–1800℃ (±5℃); intelligent temperature control system with independent regulation across 30 zones; firing cycle shortened to 36 hours (compared to the traditional 72 hours). Post‑processing technologies include microwave‑assisted sintering (increasing density by 5%) and surface nanocoating (enhancing erosion resistance by 40%). III. Application Fields Typical Equipment in Relevant Industries | Service Life | Energy-Saving Benefits New Energy Battery Ternary Material Sintering Kiln: 18–24 months; electricity consumption reduced by 22%. Electronic Glass & High-Alumina Glass Melting Furnace: 5–7 years; fuel savings of 15%. Chemical Industry Ethylene Glycol Reactor: Overhaul cycle extended by 100,000 hours, with a 50% increase in service life. Hydrogen Energy Hydrogen Storage Tank Insulation Layer: Heat loss reduced by 30%. IV. Comparative Performance Analysis Compared with traditional electrofused bricks: Thermal Shock Resistance: 35 cycles vs. 15 cycles (water quench at 1100℃); Dimensional Accuracy: ±0.3 mm vs. ±1.2 mm; Cost Advantage: 40–50% lower. Compared with competing materials: Thermal Conductivity: 2.8 W/m·K (superior to silicon carbide bricks); CO Erosion Resistance: Weight gain of 0.5% vs. 2.1% (high-alumina bricks). V. Physicochemical Indicators 1. Basic Performance: – Bulk Density: 3.25–3.40 g/cm³ – Compressive Strength at Room Temperature: ≥150 MPa (SD-98 Series) 2. High-Temperature Properties: – Flexural Strength (at 1600℃): ≥25 MPa – Thermal Expansion Rate (at 1000℃): 0.68–0.72% 3. Special Indicators: – Alkali Erosion Resistance (K₂CO₃/1400℃): ≤1.2 mm penetration/100 h – Microwave Loss Tangent: tanδ ≤0.0015 (5G frequency band)
Sintered Corundum Refractory Bricks I. Main Product Types and Characteristics (Classified by Al₂O₃ Content and Additives) Standard Type (SG-95 Series): Al₂O₃ content 94–96%; apparent porosity 14–16%; softening temperature under load ≥1700℃; applicable temperature ≤1650℃. Low-Porosity Type (SD-98 Series): Closed-pore technology (porosity ≤12%); outstanding high‑temperature creep resistance—creep rate at 1600℃ <0.3%/50h. Chromium-Corundum Composite Type (SCr-20 Series): Cr₂O₃ addition of 15–20%; slag resistance improved by a factor of three; suitable for strongly reducing atmospheres. II. Modern Production Process Flow The raw material pre‑processing system employs laser particle size sorting (with ≥85% of particles falling within the 200–325 mesh range) and nanocoating modification technology (to enhance sintering activity), along with intelligent pressing and isostatic forming. Isostatic pressing pressure: 200–250 MPa; digital twin simulation for optimized particle gradation; full-oxygen combustion in a tunnel kiln, firing temperature 1750–1800℃ (±5℃); intelligent temperature control system with independent regulation across 30 zones; firing cycle shortened to 36 hours (compared to the traditional 72 hours). Post‑processing technologies include microwave‑assisted sintering (increasing density by 5%) and surface nanocoating (enhancing erosion resistance by 40%). III. Application Fields Typical Equipment in Relevant Industries | Service Life | Energy Savings | New Energy Batteries – Ternary Material Sintering Kiln: 18–24 months; electricity consumption reduced by 22%. Electronic Glass – High-Alumina Glass Melting Furnace: 5–7 years; fuel savings of 15%. Chemical Industry – Ethylene Glycol Reactor: Overhaul cycle extended by 50%, with a 100,000‑hour service life. Hydrogen Energy – Hydrogen Storage Tank Insulation Layer: Heat loss reduced by 30%. IV. Comparative Performance Analysis Compared with traditional electrofused bricks: Thermal Shock Resistance: 35 cycles vs. 15 cycles (water quench at 1100℃); Dimensional Accuracy: ±0.3 mm vs. ±1.2 mm; Cost Advantage: 40–50% lower; Compared with competing materials: Thermal Conductivity: 2.8 W/m·K (superior to silicon carbide bricks); CO Erosion Resistance: Weight gain of 0.5% vs. 2.1% (high‑alumina bricks). V. Physicochemical Indicators 1. Basic Performance: – Bulk Density: 3.25–3.40 g/cm³ – Compressive Strength at Room Temperature: ≥150 MPa (SD-98 Series) 2. High-Temperature Properties: – Flexural Strength (at 1600℃): ≥25 MPa – Coefficient of Thermal Expansion (at 1000℃): 0.68–0.72% 3. Special Indicators: – Alkali Erosion Resistance (K₂CO₃/1400℃): ≤1.2 mm penetration/100 h – Microwave Loss Tangent: tanδ ≤ 0.0015 (5G frequency band)
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Address: Chengguan Industrial Zone, Xinmi City, Henan Province
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