Taphole Refractory Brick from Electric Arc Furnace (EAF)
Application Industry: Refractories for Steel Industry
Application Equipment: Electric Arc Furnace (EAF) Tapping-Hole Block
Size: Customized taphole block geometry per EAF tapping-hole design (free engineering on request)
Products Overview
Our Taphole Refractory Brick is a magnesia-carbon refractory brick engineered for Electric Arc Furnace tapping-hole block service. The product family is manufactured from high-quality electric-fused magnesite and high-purity flake graphite as the main raw materials by high-pressure or isostatic pressing molding, offering low porosity, high strength, excellent slag erosion resistance, good thermal shock resistance, and long service life under EAF tapping conditions.
The Taphole Refractory Brick product family is offered in two engineering-proven CHDLC chemistry grades. The CHDLC-14 grade has magnesia content 78 percent or higher and carbon content 14 percent or higher for high-carbon EAF tapping-hole service. The CHDLC-10 grade has magnesia content 82 percent or higher and carbon content 10 percent or higher for lower-carbon EAF tapping-hole service. Both grades deliver apparent porosity 5 percent or lower, bulk density of 2.85 to 2.90 g/cm³, cold crushing strength 50 MPa or higher, and high-temperature bending strength of 10 to 12 MPa at 1450 °C.
Sourced from our Xinmi City, Zhengzhou, Henan, China facility, each Taphole Refractory Brick grade is engineered to ASTM, GB/T, and ISO refractory standards. For an overview of the broader catalogue, see the Refractories for the Steel Industry category, or contact our technical sales team for a free consultation against your refractory drawing.
Product Features
Features:
- Manufactured from high-quality electric-fused magnesite and high-purity flake graphite as the main raw materials
- Engineering-proven high-pressure or isostatic pressing molding ensuring low porosity and high strength
- Excellent slag erosion resistance and good thermal shock resistance under EAF tapping conditions
- High oxidation resistance and long service life for demanding EAF tapping-hole service
- Two CHDLC chemistry grades covering magnesia content 78 to 82 percent and carbon content 10 to 14 percent for matching different EAF duty
Product Specification
Taphole refractory brick is engineered per buyer’s EAF tapping-hole design. Custom geometry and chemistry available on request.
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Brands
Items
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CHDLC-14 | CHDLC-10 |
|---|---|---|
| MgO content (%) | ≥ 78 | ≥ 82 |
| C content (%) | ≥ 14 | ≥ 10 |
| Apparent Porosity (%) | ≤ 5.0 | ≤ 5.0 |
| Bulk Density (g/cm³) | ≥ 2.85 | ≥ 2.90 |
| Cold Crushing Strength (MPa) | ≥ 50 | ≥ 50 |
| High-temperature Bending Strength (MPa) | ≥ 12 (1450 °C, 20min) |
≥ 10 (1450 °C, 30min) |
Note: Six performance parameters specified: MgO content, C content, Apparent Porosity, Bulk Density, Cold Crushing Strength, and High-temperature Bending Strength. Two CHDLC chemistry grades engineered for EAF tapping-hole block service. For project-specific chemistry and geometry, contact CH Refractories engineering.
Product Applications
Taphole Refractory Brick is a magnesia-carbon refractory brick manufactured from high-quality electric-fused magnesite and high-purity flake graphite as the main raw materials by high-pressure or isostatic pressing molding. The product family offers low porosity, high strength, excellent slag erosion resistance, good thermal shock resistance, and long service life under demanding EAF tapping-hole conditions.
Application Industry: Refractories for the Steel Industry and the broader Metallurgical Industry.
Target Equipment: Electric Arc Furnace (EAF) Tapping-Hole Block of small, medium-size, large, HP, and UHP Electric Arc Furnaces.
Specific Application Zones: The CHDLC-14 grade (magnesia content 78 percent or higher, carbon content 14 percent or higher) is the high-carbon workhorse for EAF tapping-hole block service requiring high oxidation resistance and excellent slag erosion resistance. The CHDLC-10 grade (magnesia content 82 percent or higher, carbon content 10 percent or higher) is the lower-carbon variant for EAF tapping-hole block service. Both grades deliver apparent porosity 5 percent or lower, bulk density of 2.85 to 2.90 g/cm³, cold crushing strength 50 MPa or higher, and high-temperature bending strength 10 to 12 MPa at 1450 °C with 20 to 30 minutes firing schedule.
CH Refractories is a Taphole Refractory Brick manufacturer in China, Henan, Zhengzhou. The complete Taphole Refractory Brick product family is manufactured in our Xinmi City, Zhengzhou, Henan, China facility to ASTM, GB/T, and ISO refractory standards. Each batch is supported by free consultation, on-site technical support, and a dedicated engineering team serving Refractories for the Steel Industry customers across the global iron and steel value chain.
