Product Overview
Taphole Combined Block
The Taphole Combined Block is a high-performance refractory assembly engineered for blast furnace taphole systems. It integrates multiple functional zones into a single precision-cast unit, ensuring superior structural integrity under extreme thermal and mechanical stress.
Manufactured with advanced Al₂O₃-SiC-C composite materials, this block delivers exceptional resistance to iron and slag erosion, oxidation, and thermal shock -- extending campaign life and reducing maintenance downtime.
Its combined design eliminates traditional joint interfaces, reducing infiltration risks and improving overall taphole sealing performance in continuous casting operations.
High thermal shock resistance
Superior slag & iron erosion resistance
Extended service life
Monolithic combined structure
Technical Data
Specifications
| Parameter | Unit | YXSC-1 | YXSC-2 | |||
|---|---|---|---|---|---|---|
| Guarantee | Typical | Guarantee | Typical | |||
| Bulk Density ≥ | g/cm³ | 1.70 | 1.75 | 1.72 | 1.78 | |
| Apparent Porosity ≤ | % | 15.0 | 14.0 | 15.0 | 13.0 | |
|
Modulus of Compression
≥
|
MPa | 36.0 | 48.0 | 40 | 52 | |
| Oxidation Rate ≤ | % | 8.0 | 7.0 | 8.0 | 7.0 | |
| Permeability ≤ | mDa | 1.0 | 0.8 | 1.0 | 0.8 | |
| Iron Erosion ≤ | % | 28 | 26 | 28 | 26 | |
|
Thermal Conductivity
≥
|
Room Temperature | W/(m·K) | 16.0 | 17.0 | 18.0 | 20.0 |
| 600°C | 20 | 22 | 22 | 24 | ||
| Average Pore Dia ≤ | μm | 0.1 | 0.08 | 0.1 | 0.08 | |
|
Porosity Capacity less than 1μm
≥
|
% | 80.0 | 82.0 | 80.0 | 85.0 | |
| Alkali Resistance | Grade | U | U | U | U | |
| Ash ≤ | % | 23 | 22 | 23 | 21 | |
Use Cases
Applications
The Taphole Combined Block is purpose-built for high-intensity metallurgical operations where reliability and longevity are non-negotiable.
Blast Furnace Taphole Systems
Primary application in large-volume blast furnaces for iron production, handling daily iron tapping cycles under extreme thermal conditions.
Electric Arc Furnace (EAF)
Suitable for EAF taphole applications in steel production, providing reliable performance through multiple heat cycles and rapid temperature changes.
Submerged Arc Furnace (SAF)
Deployed in ferroalloy and silicon production furnaces, where resistance to highly corrosive molten materials is critical for operational safety.
Non-Ferrous Smelting
Applied in copper, lead, and zinc smelting operations, offering chemical compatibility with diverse non-ferrous molten metal systems.
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