Bottom Pouring Set is a critical refractory assembly used in steel ladles for precise control of molten steel flow. Our sets deliver superior steel quality, improve yield, and enhance safety for casting operations worldwide.
What is a Bottom Pouring Set?
A Bottom Pouring Set is a sophisticated refractory assembly installed in a steel ladle. It allows operators to teem molten steel from the bottom of the ladle through a controlled mechanism. This coordinated set primarily consists of a stopper rod that opens and closes the nozzle embedded in the well block at the ladle base. As a result, this method produces high-quality, clean steel with minimal reoxidation and slag entrapment.
Key Advantages of Our Bottom Pouring Set
Our clients across the global steel industry rely on our sets for their most demanding applications.
Superior Steel Quality:
Our sets prevent slag and oxides from entering the ingot mold or tundish. Consequently, this significantly reduces defects and results in cleaner steel.
Precise Flow Control:
The stopper rod mechanism gives operators meticulous control over the teeming stream, from full flow to a precise trickle. In addition, it allows for better mold filling and sequence casting.
Enhanced Safety:
Because operators no longer tilt heavy ladles, they work in a safer environment and protect surrounding equipment.
Improved Yield and Efficiency:
Our sets minimize metal loss from spillage and oxidation. Therefore, you benefit from higher yield and improved operational efficiency.
Reduced Operational Costs:
We build each component with high-quality refractories to ensure longer service life. As a result, you experience fewer changeovers and lower total cost of ownership.
Technical Specifications & Components
We deliver a complete solution where each component matches perfectly for optimal performance.
| Nozzle Brick | MgO % | Al2O3 % | CaO % | C % | Bulk Density (g/cm³) | Apparent Porosity % | |
|---|---|---|---|---|---|---|---|
| Upper Nozzle | KRUN-5D | - | 83 | - | 8 | 3.04 | 5 |
| KRUN-9C | - | 76 | - | 8 | 2.95 | 5 | |
| KRUN-32B2-2 | - | 90 | - | 4.5 | 3.03 | 7 | |
| KRUN-34A | - | 85 | - | 5 | 3 | 6 | |
| KRUN-129 | - | 88 | - | 6.5 | 3.1 | 7 | |
| KRUN-LMT | 28 | 67 | - | 4.5 | 3.05 | 4 | |
| KRUN90CA | - | 96.5 | 1.5 | - | 3.2 | 12 | |
| KRUN90CMA | 5 | 90 | 1.5 | - | 3.16 | 13 | |
| Lower Nozzle | KRLN-9C | - | 76 | - | 8 | 2.95 | 5 |
| KRLN-9A | - | 68 | - | 6 | 2.7 | 9 | |
| KRLN-14 | - | 80 | - | 5.5 | 3.01 | 6.5 | |
| KRLN-14A | - | 73 | - | 8 | 2.67 | 6 | |
| KRLN-34A | - | 85 | - | 5 | 2.97 | 7 | |
| KRLN95CA | - | 96.5 | 1.5 | - | 3.2 | 12 | |
| KRLN90CMA | 5 | 90 | 1.5 | - | 3.16 | 13 | |
| KRGCast-4 | - | 88 | 1.5 | - | 3.07 | 14 | |
| Well Block | Al2O3+MgO (%) | CaO (%) | C (%) | Apparent Porosity (%) | Bulk Density (g/cm³) | Cold Crushing Strength (110℃×24h, MPa) | Cold Crushing Strength (1550℃×3h, MPa) | Cold Modulus Strength (110℃×24h, MPa) | Cold Modulus Strength (1550℃×3h, MPa) |
|---|---|---|---|---|---|---|---|---|---|
| KRAC27A | 93 | 1.2 | / | 12 | 3.17 | 50 | 90 | 8 | 25 |
| KRAC27D | 93 | 1.2 | / | 12 | 3.17 | 50 | 95 | 8 | 25 |
| KRAC30 | 97 | 1.5 | / | 12 | 3.15 | 50 | 105 | 9 | 25 |
| KRWB95CA | 97 | 1.5 | / | 15 | 3.13 | 50 | 105 | 9 | 25 |
| KRWB90CMA | 93.5+3.8 | 1.6 | / | 15 | 3.13 | 50 | 105 | 9 | 25 |
| KRWB-35 | 89 | / | 5.5 | 8 | 2.97 | 70 | / | 14 | / |
| KRWB-9 | 78 | / | 8 | 8 | 2.95 | 70 | / | 13 | / |
| KRWB-2D | 70 | / | / | 20 | 2.8 | 60 | / | 13 | / |
Bottom Pouring Set Component & Material Options:
Nozzle: Alumina, Zirconia, Fused Silica – Designed for uniform wear and precise bore sizing, ensuring controlled flow and excellent anti-clogging properties.
Well Block: High-Alumina, MgO – Offers high strength to resist mechanical stress and thermal cycling while allowing easy, accurate installation.
Stopper Rod: Alumina-Graphite, Zirconia – Provides high thermal shock resistance and excellent erosion resistance, machined with precision.
Ladle Shroud: Alumina-Graphite – Protects the steel stream from air reoxidation during pouring.
Other Products: Customized bricks, castables, and gunning mixes for ladle and tundish applications.
Customization Available:
We can tailor material composition, size, and dimensions of each component. Therefore, you receive a set that perfectly matches your ladle design, steel grade, and casting practice.
Applications of Bottom Pouring Set
Our Bottom Pouring Sets support a wide range of steelmaking operations:
Ingot Casting: The primary method for teeming molten steel into ingot molds.
Foundries: Ideal for producing large, high-value steel castings where quality is crucial.
Specialty Steel Production: Essential for manufacturing high-grade alloy steels, tool steels, and stainless steels.
Slab, Bloom, and Billet Casting: When pouring into a tundish for continuous casting operations.
Why Choose Our Bottom Pouring Set?
A Complete, Matched Set: All components work together seamlessly, avoiding compatibility issues and ensuring consistent results.
Expert Technical Support: Our metallurgical and refractory specialists assist you from initial consultation to plant troubleshooting.
Proven Performance: Leading steel mills worldwide trust our sets to perform reliably under tough conditions.
R&D Driven: We invest continuously in research and development, so you benefit from the latest refractory technology.
FAQ for Bottom Pouring Set
Q: How do I determine the right material grade for my set?
A: We recommend a grade based on your steel type, pouring temperature, and teeming time. Our technical sales team will guide you to the most suitable choice.
Q: What is the typical lifespan of a Bottom Pouring Set?
A: Service life varies with material grade, steel type, and operating practices. Nevertheless, our focus is to maximize your sequence length.
Q: Can you help with installation and training?
A: Yes. We provide detailed manuals and, when needed, on-site or remote training to ensure proper installation, preheating, and operation.
Q: Do you offer emergency delivery?
A: Absolutely. We keep common sets and components in stock and provide expedited shipping to minimize downtime.
Request a Quote or Technical Consultation
Are you ready to enhance your casting operation with a reliable Bottom Pouring Set? Contact Kerui Refractory today with your ladle details and process parameters. Our experts will respond quickly with a competitive quotation and detailed technical recommendations.
