Castables for Iron Runner
Application Industry: Refractories for Steel Industry
Application Equipment: Blast Furnace Iron Runner, Slag Skimmer, and Slag Trough
Size: Custom formulations per Iron Runner and slag skimmer geometry (free engineering on request)
Products Overview
Our Castables for Iron Runner are low-cement and ultra-low-cement castable products manufactured from dense corundum, brown corundum, high-quality bauxite, and high-quality silicon carbide as the main raw materials. The product family is engineered to deliver high-tap iron flux with good thermal-shock stability, strong erosion resistance, and excellent scour resistance in the harsh Iron Runner and slag skimmer service environment.
The Castables for Iron Runner product family is offered in four TGKJ grades (CH-TGKJ-70, CH-TGKJ-65A, CH-TGKJ-65, and CH-TGKJ-60) covering an alumina content range of 60% to 70% and a silicon-carbide-plus-carbon content range of 8% to 20%. The CH-TGKJ-70 grade is the alumina-rich workhorse for the main runner and slag skimmer. The CH-TGKJ-65A grade has elevated silicon-carbide content for the slag line of the iron runner. The CH-TGKJ-65 grade targets the branch of the iron runner and the iron runner itself. The CH-TGKJ-60 grade is the cost-effective option for the slag runner.
Sourced from our Xinmi City, Zhengzhou, Henan, China facility, each Castables for Iron Runner 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 dense corundum, brown corundum, high-quality bauxite, and high-quality SiC as main raw materials
- Low-cement and ultra-low-cement castable technology for excellent slag erosion and erosion resistance in Iron Runner service
- Good thermal-shock stability and excellent erosion and scour resistance under high-tap iron and slag flow
- Suitable for on-site casting and prefabrication of blast furnace iron runners for large and medium-size blast furnaces
- Four TGD-grade chemistry variants covering alumina range 60 to 70 percent and SiC+C range 8 to 20 percent for different runner designs
Product Specification
Standard formulation is engineered per buyer’s Iron Runner and slag skimmer geometry. Custom grain size and chemistry optimization available on request.
| Items | Brands | |||
|---|---|---|---|---|
| CH-TGKJ-70 | CH-TGKJ-65A | CH-TGKJ-65 | CH-TGKJ-60 | |
| Al2O3 content ≥ (%) | 70 | 65 | 65 | 60 |
| SiC + C content ≥ (%) | 15 | 20 | 8 | 15 |
| Bulk Density (110 °C × 24h) ≥ (g/cm³) | 2.8 | 2.8 | 2.85 | 2.7 |
| Cold Crushing Strength (110 °C × 24h) ≥ (MPa) | 5 | 5 | 5 | 5 |
| Cold Crushing Strength (1450 °C × 3h) ≥ (MPa) | 8 | 8 | 8 | 6 |
| Modulus of Rupture (110 °C × 24h) ≥ (MPa) | 25 | 30 | 30 | 20 |
| Modulus of Rupture (1450 °C × 3h) ≥ (MPa) | 25 | 35 | 30 | 25 |
| Permanent Linear Change (1450 °C × 3h) (%) | ±0.8 | ±0.8 | ±0.8 | ±0.8 |
| Application | Iron runner and slag skimmer of large-size blast furnace | Slag line of iron runner in large and medium-size blast furnace | Branch of iron runner or iron runner itself in medium-size blast furnace | Slag runner of blast furnace |
Note: Cold Crushing Strength and Modulus of Rupture are measured at two test temperatures: 110 °C for 24 hours and 1450 °C for 3 hours. For project-specific chemistry, contact CH Refractories engineering.
Product Applications
Castables for Iron Runner are low-cement and ultra-low-cement castable products manufactured from dense corundum, brown corundum, high-quality bauxite, and silicon carbide, engineered for the steel industry iron runner and slag skimmer applications in blast furnace cast house operations. The product family delivers high-tap iron flux with good thermal-shock stability, strong erosion resistance, and excellent scour resistance in the harsh iron runner environment.
Application Industry: Refractories for the Steel Industry and the broader Metallurgical Industry.
Target Equipment: Blast Furnace Iron Runner, Slag Skimmer, and Slag Trough of large and medium-size Blast Furnaces.
Specific Lining Zones: The CH-TGKJ-70 grade is the alumina-rich workhorse for the main runner and slag skimmer. The CH-TGKJ-65A grade has elevated silicon-carbide content for the slag line of the iron runner. The CH-TGKJ-65 grade targets the branch of the iron runner and the iron runner itself. The CH-TGKJ-60 grade is the cost-effective option for the slag runner. All four grades are suitable for on-site casting and prefabrication, and they deliver high-tap iron flux with good use effect.
CH Refractories is a Castables for Iron Runner manufacturer in China, Henan, Zhengzhou. The complete Castables for Iron Runner 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.
