Nozzle and Well Block for Steel Industry
Application Industry: Refractories for Steel Industry
Application Equipment: Ladle Slide Gate System for Steel Tapping Control
Size: Custom nozzle and well block geometry per ladle slide gate system design (free engineering on request)
Products Overview
Our Nozzle and Well Block is a high-performance refractory product engineered for ladle slide gate system service. Upper and lower nozzles are resin bonded products based on corundum, magnesium aluminate spinel, and graphite as the main raw materials. The products have excellent thermal shock resistance, high temperature strength, and good corrosion and erosion resistance. Well blocks of corundum based, corundum-spinel based, and corundum-chrome based have excellent high temperature properties, which can ensure longer service life in use together with nozzles as part of slide gate system.
The Nozzle and Well Block product family is offered in seven engineering-proven SK and SKZ chemistry grades. The CH-SK70 (upper and lower nozzle) grade features Al2O3 content minimum 70% and C content minimum 3% for general ladle nozzle service. The CH-SK75 grade features Al2O3 content minimum 75% and C content minimum 3% for higher-alumina nozzle service. The CH-SK80 grade features Al2O3 content minimum 80% and C content minimum 3% for high-alumina nozzle service. The CH-SK85 grade features Al2O3 content minimum 85% and C content minimum 3% for highest-alumina nozzle service. The LR-SKZ70 (well block) grade features Al2O3 content minimum 70% and C content minimum 5% for general well block service. The LR-SKZ80 grade features Al2O3 content minimum 80% and C content minimum 3% for high-alumina well block service. The LR-SKZ85 grade features Al2O3 content minimum 85% for highest-alumina well block service.
Sourced from our Xinmi City, Zhengzhou, Henan, China facility, each Nozzle and Well Block 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:
- Upper and lower nozzles manufactured from corundum, magnesium aluminate spinel, and graphite as the main raw materials with phenolic resin binder
- Engineering-proven excellent thermal shock resistance, high temperature strength, and good steel impact and corrosion resistance
- Well blocks of corundum based, corundum-spinel based, and corundum-chrome based with excellent high temperature properties
- Designed to ensure longer service life in use together with nozzles as part of slide gate system
- Seven SK and SKZ chemistry grades covering Al2O3 content 70%-85% for matching different ladle steel grade and slide gate requirements
Product Specification
Nozzle and well block is engineered per buyer’s ladle slide gate system design. Custom chemistry and geometry available on request.
|
Brands
Items
|
Upper and lower nozzle | |||
|---|---|---|---|---|
| CH-SK70 | CH-SK75 | CH-SK80 | CH-SK85 | |
| Al2O3 content (%) | ≥ 70 | ≥ 75 | ≥ 80 | ≥ 85 |
| C content (%) | ≥ 3 | ≥ 3 | ≥ 3 | ≥ 3 |
| Bulk Density (g/cm³) | ≥ 2.70 | ≥ 2.85 | ≥ 2.85 | ≥ 2.90 |
| Apparent Porosity (%) | ≤ 10 | ≤ 10 | ≤ 10 | ≤ 10 |
|
Brands
Items
|
Well block | ||
|---|---|---|---|
| LR-SKZ70 | LR-SKZ80 | LR-SKZ85 | |
| Al2O3 content (%) | ≥ 70 | ≥ 80 | ≥ 85 |
| C content (%) | ≥ 5 | ≥ 3 | — |
| Bulk Density (g/cm³) | ≥ 2.80 | ≥ 2.85 | ≥ 2.95 |
| Apparent Porosity (%) | ≤ 12 | ≤ 12 | ≤ 18 |
| Cold Crushing Strength (MPa) | ≥ 40 | ≥ 40 | ≥ 50 |
Note: Four performance parameters specified for upper and lower nozzle: Al2O3 content, C content, Bulk Density, and Apparent Porosity. Five performance parameters specified for well block: Al2O3 content, C content, Bulk Density, Apparent Porosity, and Cold Crushing Strength. Seven SK and SKZ chemistry grades engineered for ladle slide gate system service. For project-specific chemistry and geometry, contact CH Refractories engineering.
Product Applications
Nozzle and Well Block is a high-performance refractory product manufactured from corundum, magnesium aluminate spinel, and graphite as the main raw materials with phenolic resin binder for upper and lower nozzles, and corundum based, corundum-spinel based, and corundum-chrome based formulas for well blocks, engineered for ladle slide gate system service. The product family features excellent thermal shock resistance, high temperature strength, good corrosion and erosion resistance, and longer service life in use together with nozzles as part of slide gate system.
Application Industry: Refractories for the Steel Industry and the broader Metallurgical Industry.
Target Equipment: Ladle Slide Gate System of small, medium-size, and large ladles in steelmaking operations.
Specific Application Zones: The CH-SK70, CH-SK75, CH-SK80, and CH-SK85 grades (upper and lower nozzle) feature Al2O3 content minimum 70%-85% and C content minimum 3% for ladle upper and lower nozzle service. The LR-SKZ70, LR-SKZ80, and LR-SKZ85 grades (well block) feature Al2O3 content minimum 70%-85% for ladle well block service. All seven grades are designed to ensure longer service life in use together with nozzles as part of slide gate system, with high temperature strength, good corrosion and erosion resistance.
CH Refractories is a Nozzle and Well Block manufacturer in China, Henan, Zhengzhou. The complete Nozzle and Well Block 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.
