Low Carbon Corundum-Spinel Brick
Application Industry: Refractories for Steel Industry
Application Equipment: Ladle Sidewall and Bottom Working Layer
Size: Standard brick geometry per ladle working lining design (custom sizes available on request)
Products Overview
Our Low Carbon Corundum-Spinel Brick is a corundum-spinel refractory brick engineered for ladle sidewall and bottom working layer service. The product family is manufactured from fused alumina, magnesium aluminate spinel, fused MgO, and graphite as the main raw materials, by pressing and low temperature heat treatment, featuring high strength, better corrosion resistance, and excellent thermal shock resistance. The product is mainly used in the bottom and sidewall for low and ultra-low carbon steel production.
The Low Carbon Corundum-Spinel Brick product family is offered in three engineering-proven LMT chemistry grades. The CH-LMT80 grade features alumina content minimum 80% and magnesia content minimum 5% for general ladle sidewall and bottom working layer service. The CH-LMT85 grade features alumina content minimum 85% and magnesia content minimum 4% for higher-alumina ladle sidewall and bottom working layer service. The CH-LMT88 grade features alumina content minimum 88% and magnesia content minimum 3% for high-alumina ladle sidewall and bottom working layer service. All three grades deliver carbon content maximum 5%, apparent porosity maximum 8%, bulk density minimum 2.90 to 3.00 g/cm³, and cold crushing strength minimum 35 to 45 MPa.
Sourced from our Xinmi City, Zhengzhou, Henan, China facility, each Low Carbon Corundum-Spinel Brick 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 fused alumina, magnesium aluminate spinel, fused MgO, and graphite as the main raw materials
- Engineering-proven pressing and low temperature heat treatment for ladle lining service
- Low carbon refractory formulation for low and ultra-low carbon steel production
- High strength, better corrosion resistance, and excellent thermal shock resistance
- Three LMT chemistry grades covering alumina content 80%-88% for matching different low-carbon steel service
Product Specification
Standard taphole clay formulation is engineered per buyer’s blast furnace capacity and taphole diameter. Three grades available: Environmental Friendly (resin), Waterless (tar), and Water-Based (water). Custom chemistry available on request.
| Items | Brands | ||
|---|---|---|---|
| Environmental Friendly Taphole Clay Resin-bonded |
Waterless Taphole Clay Tar-bonded |
Water-Based Taphole Clay Water-bonded |
|
| Al2O3 content ≥ (%) | 27 | 25 | 25 |
| SiC + C content ≥ (%) | 30 | 30 | >25 |
| Moisture (%) | <0.5 | <0.5 | 18.0 |
| Bulk Density (1350 °C × 3h) (g/cm³) | 1.60 to 2.20 | 1.60 to 2.20 | 1.40 to 1.80 |
| Cold Crushing Strength (1350 °C × 3h) ≥ (MPa) | 8.0 | 10.0 | 6.0 |
| Apparent Porosity (1350 °C × 3h) ≤ (%) | 35.0 | 32.0 | 40.0 |
Note: All three grades are measured at 1350 °C for 3 hours. The Environmental Friendly Taphole Clay uses resin as the binding agent, the Waterless Taphole Clay uses tar, and the Water-Based Taphole Clay uses water. For project-specific chemistry, contact CH Refractories engineering.
Product Applications
Low Carbon Corundum-Spinel Brick is a corundum-spinel refractory brick manufactured from fused alumina, magnesium aluminate spinel, fused MgO, and graphite as the main raw materials, by pressing and low temperature heat treatment, engineered for ladle sidewall and bottom working layer service. The product family features high strength, better corrosion resistance, and excellent thermal shock resistance, mainly used in the bottom and sidewall for low and ultra-low carbon steel production.
Application Industry: Refractories for the Steel Industry and the broader Metallurgical Industry.
Target Equipment: Ladle Sidewall and Bottom Working Layer of small, medium-size, and large ladles in steelmaking operations.
Specific Application Zones: The CH-LMT80 grade (alumina content minimum 80%, magnesia content minimum 5%) is the standard variant for general ladle sidewall and bottom working layer service. The CH-LMT85 grade (alumina content minimum 85%, magnesia content minimum 4%) is the higher-alumina variant for demanding ladle sidewall and bottom working layer service. The CH-LMT88 grade (alumina content minimum 88%, magnesia content minimum 3%) is the high-alumina workhorse for high-demand ladle sidewall and bottom working layer service. All three grades deliver carbon content maximum 5%, apparent porosity maximum 8%, bulk density minimum 2.90 to 3.00 g/cm³, and cold crushing strength minimum 35 to 45 MPa.
CH Refractories is a Low Carbon Corundum-Spinel Brick manufacturer in China, Henan, Zhengzhou. The complete Low Carbon Corundum-Spinel Brick 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.
