Filler for Electric Arc Furnace (EAF) Tapping-Hole Lining

Application Industry: Refractories for Steel Industry

Application Equipment: Electric Arc Furnace (EAF) Tapping-Hole Lining

Size: Granular filler material with 2 to 6 mm grain size (custom formulation on request)

Consultation：

Products Overview

Our Filler for EAF Tap-Hole is a granular refractory filler product engineered for Electric Arc Furnace (EAF) tapping-hole lining service. The product family is manufactured from high-quality magnesite and Fe₂O₃-CaO magnesite, and shows the features of excellent resistance against steel penetration, superior erosion resistance, easily-sintering, high bulk density, and easy installation. The product is an ideal choice for HP and UHP Electric Arc Furnace bottom service.

The Filler for EAF Tap-Hole product family is offered in three engineering-proven DCT chemistry grades. The CH-DCT90 grade is a high-silica variant with silica content of 90 to 95 percent for high-temperature EAF bottom service. The CH-DCT75 grade is a mid-silica variant with silica content 75 percent or higher and magnesia content 10 percent or higher. The CH-DCT25 grade is a high-magnesia variant with magnesia content 55 percent or higher and silica content 25 percent or higher.

Sourced from our Xinmi City, Zhengzhou, Henan, China facility, each Filler for EAF Tap-Hole 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 magnesite, Fe₂O₃-CaO magnesite, magnesium olivine, and quartz-based raw materials with appropriate additives
Engineering-proven excellent resistance against steel penetration, superior erosion resistance, and easily-sintering characteristics
Easy installation with high bulk density and self-opening rate for safe operation during EAF tapping cycles
Suitable for HP and UHP electric arc furnace bottom service under demanding steel penetration and erosion conditions
Three DCT chemistry grades covering silica content 25 to 95 percent and magnesia content 10 to 55 percent for matching different EAF capacities

Product Specification

Granular filler material is engineered per buyer’s EAF tapping-hole design and tapping cycle. Custom chemistry and grain size optimization available on request.

Brands Items	CH-DCT90	CH-DCT75	CH-DCT25
MgO content (%)	—	≥ 10	≥ 55
SiO₂ content (%)	90~95	≥ 75	≥ 25
Fe₂O₃ content (%)	—	—	3~8
Grain Size (mm)	2~6	2~6	2~6

Note: Four performance parameters are specified per PDF source: MgO content, SiO₂ content, Fe₂O₃ content, and Grain Size. Three DCT chemistry grades are engineered for HP/UHP EAF bottom service. For project-specific chemistry and grain size optimization, contact CH Refractories engineering.

Product Applications

Filler for EAF Tap-Hole is a granular refractory filler product engineered for Electric Arc Furnace tapping-hole lining service. The product family is manufactured from high-quality magnesite and Fe₂O₃-CaO magnesite, showing excellent resistance against steel penetration, superior erosion resistance, easily-sintering, high bulk density, and easy installation. The product is an ideal choice for HP and UHP Electric Arc Furnace bottom service.

Application Industry: Refractories for the Steel Industry and the broader Metallurgical Industry.

Target Equipment: Electric Arc Furnace (EAF) Tapping-Hole Lining of small, medium-size, large, HP, and UHP Electric Arc Furnaces.

Specific Application Zones: The CH-DCT90 grade (silica content 90 to 95 percent) is optimized for high-temperature EAF bottom service requiring excellent steel penetration resistance. The CH-DCT75 grade (silica content minimum 75 percent, magnesia content minimum 10 percent) targets intermediate-temperature EAF bottom service with balanced performance. The CH-DCT25 grade (magnesia content minimum 55 percent, silica content minimum 25 percent, Fe₂O₃ content 3 to 8 percent) is the high-magnesia variant for demanding HP and UHP EAF bottom service with superior erosion resistance and easily-sintering behavior. All three grades deliver standard grain size range of 2 to 6 mm for manual filler installation during EAF tapping operation.

CH Refractories is a Filler for EAF Tap-Hole manufacturer in China, Henan, Zhengzhou. The complete Filler for EAF Tap-Hole 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.

Product FAQ

Q1: What is filler for EAF tap-hole and what are the main applications?

A1: Filler for EAF Tap-Hole is a granular refractory filler product manufactured from high-quality magnesite, magnesium olivine, and quartz-based raw materials with appropriate additives. The product family shows excellent resistance against steel penetration, superior erosion resistance, easily-sintering characteristics, high bulk density, and easy installation. The product is widely used as tapping-hole filler in Electric Arc Furnace bottom service, ideal choices for HP and UHP EAF bottom operation.

Q2: How many chemistry grades of filler for EAF tap-hole does CH Refractories offer?

A2: CH Refractories offers three engineering-proven DCT chemistry grades of Filler for EAF Tap-Hole. The CH-DCT90 grade is a high-silica variant with silica content of 90 to 95 percent for high-temperature EAF bottom service. The CH-DCT75 grade is a mid-silica variant with silica content 75 percent or higher and magnesia content 10 percent or higher. The CH-DCT25 grade is a high-magnesia variant with magnesia content 55 percent or higher, silica content 25 percent or higher, and Fe₂O₃ content 3 to 8 percent.

Q3: What is the grain size and key property of filler for EAF tap-hole?

A3: Filler for EAF Tap-Hole is delivered as a granular filler material with standard grain size range of 2 to 6 mm. The product shows excellent resistance against steel penetration and superior erosion resistance in HP/UHP EAF bottom service. The product family's easily-sintering, high bulk density, and easy installation characteristics enable safe operation during EAF tapping cycles.

Q4: Can the filler for EAF tap-hole be customized to specific EAF designs?

A4: Yes. CH Refractories offers custom chemistry and grain size optimization against the buyer's specific EAF capacity, tapping-hole design, and tapping cycle requirements. Please send the EAF tapping-hole drawing, operating temperature, and tapping cycle data to our engineering team in Xinmi City, Zhengzhou, Henan, China for a free consultation, on-site technical support, and a tailored filler formulation proposal.