Refractories for CAS-OB refining
Application Industry: Refractories for Steel Industry
Application Equipment: CAS-OB Refining Furnace (Composition Adjustment by Sealed argon bubbling – Oxygen Blowing)
Size: Custom refractories geometry per CAS-OB furnace design (free engineering on request)
Products Overview
Our Refractories for CAS-OB refining is a high-performance refractory product family engineered for CAS-OB refining furnace (Composition Adjustment by Sealed argon bubbling – Oxygen Blowing) service. CH Refractories has unique design on CAS cover structure, with refractories manufactured from high-quality corundum, fused spinel, and fused mullite as main raw materials, using ultra-low cement castable production process. The product family features stable quality, no cracking, good thermal shock resistance, anti-slag erosion, spalling resistance, and high service life performance for CAS-OB refining service.
The Refractories for CAS-OB refining product family is offered in two engineering-proven CAS and OB chemistry grades covering two service zones. The CH-CAS88 grade (CAS cover) features MgO+Al2O3 content minimum 88% for CAS cover service, with Bulk Density minimum 2.95 g/cm³, Cold Crushing Strength minimum 50 MPa after 110 °C curing and minimum 55 MPa after 1500 °C firing, and Permanent Linear Change 0 to +1 percent after 1500 °C firing. The CH-OB90 grade (OB oxygen gun) features MgO+Al2O3 content minimum 90% for OB oxygen gun service, with Bulk Density minimum 3.0 g/cm³, Cold Crushing Strength minimum 40 MPa after 110 °C curing and minimum 50 MPa after 1500 °C firing, and Permanent Linear Change -0.5 to +0.5 percent after 1500 °C firing. Both grades deliver excellent service performance for CAS-OB refining furnace.
Sourced from our Xinmi City, Zhengzhou, Henan, China facility, the Refractories for CAS-OB refining product family 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 corundum, fused spinel, and fused mullite as main raw materials with ultra-low cement castable production process
- Engineering-proven stable quality, no cracking, good thermal shock resistance, anti-slag erosion, and spalling resistance for CAS-OB service
- Unique CH Refractories design for CAS cover structure with high service life performance
- Two CAS and OB chemistry grades covering MgO+Al2O3 content 88%-90% for CAS cover and OB oxygen gun service zones
- Designed for different CAS-OB furnace service zones: CAS cover and OB oxygen gun
Product Specification
CH Refractories has unique design on CAS cover. The refractories are developed by ultra-low cement castables with corundum, spinel and mullite as the main raw materials. They have good performance on stable quality, high strength, good erosion resistance, good spalling resistance and long service life.
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Brands
Items
|
CH-CAS88 | CH-OB90 |
|---|---|---|
| MgO+Al2O3 (%) | ≥ 88 | ≥ 90 |
| Bulk density (g/cm³) | ≥ 2.95 (110 °C, 24h) |
≥ 3.0 (110 °C, 24h) |
| Cold crushing strength (MPa) | ≥ 50 (110 °C, 24h) |
≥ 40 (110 °C, 24h) |
| ≥ 55 (1500 °C, 3h) |
≥ 50 (1500 °C, 3h) |
|
| Permanent linear change (%) | 0~+1 (1500 °C, 3h) |
-0.5~+0.5 (1500 °C, 3h) |
| Application | CAS cover | OB oxygen gun |
Note: Five performance parameters specified: MgO+Al2O3 content, Bulk Density, Cold Crushing Strength, Permanent Linear Change, and Application. Two CAS and OB chemistry grades engineered for CAS-OB refining furnace service covering two service zones: CAS cover and OB oxygen gun. For project-specific chemistry and geometry, contact CH Refractories engineering.
Product Applications
Refractories for CAS-OB refining is a high-performance refractory product family manufactured from high-quality corundum, fused spinel, and fused mullite as main raw materials with ultra-low cement castable production process, engineered for CAS-OB refining furnace (Composition Adjustment by Sealed argon bubbling – Oxygen Blowing) service. CH Refractories has unique design on CAS cover structure. The product family features stable quality, no cracking, good thermal shock resistance, anti-slag erosion, spalling resistance, and high service life performance for CAS-OB refining service.
Application Industry: Refractories for the Steel Industry and the broader Metallurgical Industry.
Target Equipment: CAS-OB Refining Furnace of small, medium-size, and large CAS-OB units in steelmaking secondary refining operations.
Specific Application Zones: The CH-CAS88 grade (CAS cover) features MgO+Al2O3 content minimum 88% for CAS cover service, with Bulk Density minimum 2.95 g/cm³, Cold Crushing Strength minimum 50 MPa after 110 °C curing and minimum 55 MPa after 1500 °C firing, and Permanent Linear Change 0 to +1 percent after 1500 °C firing. The CH-OB90 grade (OB oxygen gun) features MgO+Al2O3 content minimum 90% for OB oxygen gun service, with Bulk Density minimum 3.0 g/cm³, Cold Crushing Strength minimum 40 MPa after 110 °C curing and minimum 50 MPa after 1500 °C firing, and Permanent Linear Change -0.5 to +0.5 percent after 1500 °C firing. Both grades deliver excellent service performance for CAS-OB refining furnace.
CH Refractories is a Refractories for CAS-OB refining manufacturer in China, Henan, Zhengzhou. The complete Refractories for CAS-OB refining 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.
