Waterless Taphole Clay
Application Industry: Refractories for Steel Industry
Application Equipment: Blast Furnace Taphole (Tapping Hole)
Size: Standard taphole diameter per blast furnace (custom formulation on request)
Products Overview
Our Waterless Taphole Clay is a refractory taphole mud manufactured from corundum, alumina-silica based materials, SiC, and coke as the main raw materials, bonded by resin. The product family delivers good filling-up, easy installation, easy sintering, easy opening, and good erosion resistance under the harsh Blast Furnace Taphole service environment.
The Waterless Taphole Clay product family is offered in four PN grades (CH-PN20, CH-PN25, CH-PN30, and CH-PN35) covering an alumina content range of 20% to 35% and a consistent silicon-carbide-plus-carbon content of 25% or higher. The CH-PN20 grade is the baseline alumina option optimized for small and medium-size blast furnace tapholes. The CH-PN25 grade targets large and medium-size blast furnace tapholes. The CH-PN30 and CH-PN35 grades deliver elevated alumina content for the most demanding large blast furnace taphole service.
Sourced from our Xinmi City, Zhengzhou, Henan, China facility, each Waterless Taphole Clay 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 corundum, alumina-silica based materials, SiC, and coke as the main raw materials, bonded by resin
- Engineering-proven good filling-up and easy installation at the blast furnace taphole
- Easy sintering, easy opening, good erosion resistance, and excellent thermal-shock stability under high-tap iron flow
- Suitable for small, medium-size, and large blast furnace tapping hole mud applications
- Four PN-grade chemistry variants covering alumina content range 20 to 35 percent for matching different blast furnace capacities
Product Specification
Standard taphole formulation is engineered per buyer’s blast furnace capacity and taphole diameter. Custom grain size and chemistry optimization available on request.
| Items | Brands | |||
|---|---|---|---|---|
| CH-PN20 | CH-PN25 | CH-PN30 | CH-PN35 | |
| Al2O3 content ≥ (%) | 20 | 25 | 30 | 35 |
| SiC + C content ≥ (%) | 25 | 25 | 25 | 25 |
| Bulk Density (200 °C × 24h) ≥ (g/cm³) | 1.8 | 1.95 | 2.00 | 2.10 |
| Crushing Strength (CH-PN20 / CH-PN25: 1350 °C, coke-bed; CH-PN30 / CH-PN35: 110 °C × 24h) ≥ (MPa) | 2 | 2 | 3 | 3 |
| Permanent Linear Change (1350 °C, coke-bed) (%) | ±1 | ±1 | ±1 | ±1 |
| Application | Taphole of medium or small-size blast furnace | Taphole of large or medium-size blast furnace | Taphole of large blast furnace | Taphole of large blast furnace |
Note: Crushing Strength and Permanent Linear Change for CH-PN20 and CH-PN25 are tested at 1350 deg C in coke-bed conditions. For CH-PN30 and CH-PN35, Crushing Strength is tested at 110 deg C for 24 hours. Permanent Linear Change is plus or minus 1 percent at 1350 deg C in coke-bed for all grades. For project-specific chemistry, contact CH Refractories engineering.
Product Applications
Waterless Taphole Clay is a refractory taphole mud manufactured from corundum, alumina-silica based materials, SiC, and coke, bonded by resin. The product family delivers good filling-up, easy installation, easy sintering, easy opening, good erosion resistance, and excellent thermal-shock stability under the harsh Blast Furnace Taphole service environment.
Application Industry: Refractories for the Steel Industry and the broader Metallurgical Industry.
Target Equipment: Blast Furnace Taphole of small, medium-size, and large Blast Furnaces.
Specific Application Zones: The CH-PN20 grade is the baseline alumina option optimized for the taphole of small and medium-size blast furnaces. The CH-PN25 grade targets the taphole of large and medium-size blast furnaces. The CH-PN30 and CH-PN35 grades deliver elevated alumina content for the most demanding taphole of large blast furnaces. All four grades deliver good filling, easy opening, and stable iron mouth service, ensuring high-yield Blast Furnace operation and reducing the working intensity in front of the furnace.
CH Refractories is a Waterless Taphole Clay manufacturer in China, Henan, Zhengzhou. The complete Waterless Taphole Clay 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.
