Prefabricated Block for EAF（Electric Arc Furnace）
Application Industry: Refractories for Steel Industry
Application Equipment: Electric Arc Furnace (EAF) Top Cone Lining
Size: Custom prefabricated block geometry per EAF top cone design (free engineering on request)
Products Overview
Our Prefabricated Block for EAF is a precast refractory product engineered for Electric Arc Furnace top cone lining service. The product family is manufactured from high-grade alumina and chrome oxide raw materials with an appropriate binder and additive system, offering accurate size, stable performance, short construction period, and low cost compared to fired refractory bricks.
The Prefabricated Block for EAF product family is offered in two engineering-proven DLD chemistry grades. The DLD-85 grade is the high-alumina workhorse with alumina content 85 percent or higher for high-demand EAF top cone service. The DLD-80 grade is the mid-alumina variant with alumina content 80 percent or higher and chrome oxide content 2 percent or higher for standard EAF top cone applications. Both grades deliver bulk density of 2.8 g/cm³ or higher after 110 °C curing for 24 hours and cold crushing strength of 30 MPa after 110 °C curing and 60 MPa after 1500 °C firing for 3 hours.
Sourced from our Xinmi City, Zhengzhou, Henan, China facility, each Prefabricated Block for EAF 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-grade alumina and chrome oxide raw materials with appropriate binding system
- Engineering-proven prefabricated block technology for EAF top cone service with stable performance
- High bulk density and accurate size ensuring stable installation geometry under rapid heating cycles
- Short construction period, low cost, and high product yield compared to fired refractory bricks
- Two DLD chemistry grades covering alumina content 80 to 85 percent for matching different EAF capacity zones
Product Specification
Pre-mixed dry prefabricated block material is engineered per buyer’s EAF top cone design. Custom geometry and chemistry optimization available on request.
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Brands
Items
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DLD-85 | DLD-80 | |
|---|---|---|---|
| Al2O3 content (%) | ≥ 85 | ≥ 80 | |
| Cr2O3 content (%) | — | ≥ 2 | |
| Bulk Density (g/cm³) | 110 °C × 24h | ≥ 2.8 | ≥ 2.8 |
| Cold Crushing Strength (MPa) | 110 °C × 24h | ≥ 30 | ≥ 30 |
| 1500 °C × 3h | ≥ 60 | ≥ 60 | |
| Firing Linear Change (%) | 1500 °C × 3h | ±0.3 | ±0.3 |
Note: Six performance parameters specified per PDF source: Al2O3 content, Cr2O3 content, Bulk Density, Cold Crushing Strength, and Firing Linear Change. Two DLD chemistry grades engineered for Electric Arc Furnace top cone lining service. For project-specific chemistry and geometry, contact CH Refractories engineering.
Product Applications
Prefabricated Block for EAF is a precast refractory product engineered for Electric Arc Furnace top cone lining service. The product family is manufactured from high-grade alumina and chrome oxide raw materials, offering accurate size, stable performance, short construction period, and low cost compared to fired refractory bricks. The product is widely used as a precast refractory solution for EAF top cone lining in steel and broader metallurgical industry.
Application Industry: Refractories for the Steel Industry and the broader Metallurgical Industry.
Target Equipment: Electric Arc Furnace (EAF) Top Cone Lining of small, medium-size, large, HP, and UHP Electric Arc Furnaces.
Specific Application Zones: The DLD-85 grade (alumina content 85 percent or higher) is the high-alumina workhorse for high-demand EAF top cone service requiring superior thermal shock resistance. The DLD-80 grade (alumina content 80 percent or higher, chrome oxide content 2 percent or higher) is the mid-alumina variant with chrome-enhanced performance for standard EAF top cone lining service. Both grades deliver bulk density of 2.8 g/cm³ or higher after 110 °C curing for 24 hours, cold crushing strength of 30 MPa after 110 °C curing for 24 hours and 60 MPa after 1500 °C firing for 3 hours, with firing linear change tolerance of ±0.3 percent.
CH Refractories is a Prefabricated Block for EAF manufacturer in China, Henan, Zhengzhou. The complete Prefabricated Block for EAF 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.
