REBO Refractory Precast Shapes Parameters
Refractory precast shapes are custom-designed blocks or components. They are made from monolithic materials, specifically castables. These shapes undergo a multi-step factory process: pre-casting, vibration, curing, and pre-baking. They are then delivered for quick installation. It is also called PCPF block. See the parameters of common precast shapes.
| item | Performance | ||
|---|---|---|---|
| GQ-92 | GQ-85 | ||
| (AL2O3 + SiC)/% ≥ | 92 | 85 | |
| CaO/% ≤ | 4 | 4 | |
| Crushing Strength/MPa ≥ | 110℃*24h After drying | 80 | 60 |
| 1100℃*3h After reburning | 100 | 70 | |
| 1500℃*3h After reburning | 120 | 100 | |
| Cold Bending Strength/Mpa | 110℃*24h After drying | 8 | 6 |
| 1100℃*3h After reburning | 9 | 7 | |
| 1500℃*3h After reburning | 10 | 9 | |
| Heating Linear Change/% | 1100℃*3h After reburning | ±0.5 | ±0.5 |
| 1500℃*3h After reburning | ±0.5 | ±0.5 | |
| Bulk Density | 110℃*24h After drying | 2.9 | 2.85 |
Types of Precast Refractory Shapes
- Material Formulation: Engineered with high alumina, corundum, steel fiber reinforced, anti-permeability, or low cement castables and coating mixes to withstand extreme thermal shock, corrosion, and severe mechanical wear.
- Thermal Processing: Select from dried, pre-baked, or pre-fired states enabling you to balance cost, eliminate site explosion risks, and achieve fast-track furnace commissioning.
- Scale & Handling: Available in small, medium, and heavy-duty large blocks. These shapes complete with customized lifting points to streamline crane handling and modular assembly.
- Functional Application: Purpose-built for metallurgical systems (purging blocks, impact pads), furnace structures (burner blocks, door frames), and high-velocity wear zones (launders, abrasion-resistant linings).
Customized Refractory Precast Shapes
REBO offers end-to-end custom precast block solutions from structural design and material formulation to precision casting and controlled pre-baking. Whether you have detailed CAD drawings or complex working conditions, our engineering team delivers plug-and-play shapes engineered for your specific application.
Precision Modeling & Design Optimization
Send us your 2D/3D CAD drawings or let our engineers reverse-engineer from your equipment dimensions. We optimize joint interlocks, embedded anchors, and lifting lugs for seamless, hassle-free field installation.
Engineered Material Matching
REBO tailors formulations including corundum, mullite, silicon carbide, high-alumina, and magnesia-spinel to match your exact operating temperatures, slag chemistry, thermal shock, and mechanical wear.
Factory Pre-Baking (Zero Explosion Risk)
Custom pre-baking 300–600℃ or high-temperature pre-firing (>1000℃) removes free and chemically bound water. It prevents dry-out explosions and drastically reducing your downtime.
Tight Tolerances & Pre-Assembly Trial
Cast with high-precision molds and high-frequency vibration, every shape undergoes strict tolerance checks and factory pre-assembly to guarantee zero on-site modifications.
REBO Pre Cast Blocks are Trusted by 100+ Global Enterprise Customers
REBO has built a strong global reputation by earning the trust of over 100 enterprise customers spanning South Korea, Canada, the Middle East, and beyond. These industry leaders rely on our specialized expertise to deliver tailored precast refractory solutions integrated with refractory bricks that are engineered for maximum performance and durability in critical industrial operations.
- Proven Durability: Engineered to meet strict international standards for thermal shock and wear resistance.
- Seamless Installation: Custom-molded for exact fitment and minimizing customer downtime.
- Global Track Record: Reliable supply chain and technical support for large-scale international projects.
Key Advantages of Precast Solutions
Superior Quality & Dense Microstructure
Automated factory casting, precise water ratios, and high-frequency vibration eliminate air pockets, ensuring higher density, superior slag resistance, and extended service life over monolithic linings.
Zero Explosion Risk & Fast Heating
Controlled factory pre-baking (300–600℃ or pre-firing above 1000℃) removes free and bound water, preventing moisture-induced cracking and enabling safe, rapid furnace start-ups.
Minimized Downtime & Lower Total TCO
Modular “plug-and-play” installation eliminates complex formwork, on-site curing, and lengthy dry-out schedules saving days of downtime and recovering hundreds of thousands in operational costs.
Complex Shapes & Integrated Hardware
Custom precision molds easily replicate intricate geometries like burner blocks and port seats, complete with factory-embedded anchors, interlocks, and lifting lugs for effortless field assembly.
Key Applications & Critical Use Zones
Steelmaking & Metallurgy
Essential for molten-metal contact and thermal-impact zones, including ladle bottoms, tundish impact pads, purging blocks, tapholes, and re-heating furnace burner blocks.
Aluminum & Non-Ferrous Smelting
Used in non-wetting applications to resist molten metal penetration, particularly for furnace door frames, tapholes, launders, degassing boxes, and transfer chutes.
Cement & Lime Industries
Ideal for high-abrasion and thermal-shock areas in rotary kiln systems, such as kiln mouth protectors, calciner feed pipes, burner pipe sleeves, and cooler walls. It can combine with ceramic fiber.
Power, Petrochemical & Incineration
Protects severe wear-and-tear sectors subject to high-velocity dust or corrosive gases, such as CFB boiler cyclone target zones, fluid catalytic cracking (FCC) ducts, and incinerator sidewalls.
Strong Manufacturing & Global Supply Strength
Our modern production facility yields over 100,000 metric tons annually. This guarantees high-volume, stable material supply and fast turnaround times for your large-scale projects.
From initial material selection and thermal stress analysis to on-site assembly guidance, our dedicated team of refractory engineers supports you through every stage of your project lifecycle.
Every precast shape is wrapped in heavy-duty moisture-proof film and secured in reinforced, fumigated wooden crates with custom cushioning to ensure zero-damage arrival across long-distance sea transport.
With a reliable international logistics network and extensive export experience across 100+ countries, REBO handles fast-track customs clearance and port-to-door shipping worldwide.
FAQs of Refractory Precast Shapes
Q: What Are Refractory Precast Shapes?
Q: What Types of Molds Can Be Customized for Refractory Precast Shapes?
Steel Molds: Ideal for high-volume, repeat orders requiring maximum dimensional precision and longevity.
Wooden Molds: Cost-effective and flexible, perfect for medium-sized batches and complex geometries.
Foam/Plastic Molds: Best suited for rapid prototyping, one-off custom shapes, or complex trial models with short lead times.
