Q3: What are the key physical properties of Al2O3-MgO-C brick?

A3: Al2O3-MgO-C Brick delivers apparent porosity maximum 8%, bulk density minimum 2.90 to 3.00 g/cm, and cold crushing strength minimum 40 MPa depending on grade. The CH-LMT60 grade achieves bulk density minimum 2.90 g/cm, the CH-LMT65A grade achieves minimum 2.95 g/cm, the CH-LMT65B grade achieves minimum 2.90 g/cm, and the CH-LMT70A grade achieves minimum 3.00 g/cm. All four grades deliver cold crushing strength minimum 40 MPa. The product family features better corrosion and erosion resistance, good anti-spalling performance, and high strength for ladle sidewall and bottom working layer service.

Al2O3-MgO-C Brick for Steel Industry

Q: Q1: What is Al2O3-MgO-C brick and what are the main applications?

A1: Al2O3-MgO-C Brick is a corundum-magnesia-carbon refractory brick engineered for ladle sidewall and bottom working layer service. The product family is manufactured from corundum, magnesium aluminate spinel, super-grade bauxite, high-quality MgO, and flake graphite as main raw materials, by phenolic resin as binder and machine pressing molding technique. The product family features better corrosion and erosion resistance, good anti-spalling performance, and high strength. The product is mainly used in the bottom and sidewall of ladle working lining for common carbon steel production in steelmaking operations.

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)

Consultation：

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Products Overview

Our Al₂O₃-MgO-C Brick is a corundum-magnesia-carbon refractory brick engineered for ladle sidewall and bottom working layer service. The product family is manufactured from corundum, magnesium aluminate spinel, super-grade bauxite, high-quality MgO, and flake graphite as main raw materials, by phenolic resin as binder and machine pressing molding technique, featuring better corrosion and erosion resistance as well as good anti-spalling performance.

The Al₂O₃-MgO-C Brick product family is offered in four engineering-proven LMT chemistry grades. The CH-LMT60 grade features Al₂O₃ content minimum 60% and MgO content minimum 16% for general ladle sidewall and bottom working layer. The CH-LMT65A grade features Al₂O₃ content minimum 65% and MgO content minimum 12% for higher-magnesia ladle sidewall and bottom. The CH-LMT65B grade features Al₂O₃ content minimum 65% and MgO content minimum 12% for general ladle working layer. The CH-LMT70A grade features Al₂O₃ content minimum 70% and MgO content minimum 4% for high-alumina ladle working layer. All four grades deliver C content minimum 8%, apparent porosity maximum 8%, bulk density minimum 2.90 to 3.00 g/cm³, and cold crushing strength minimum 40 MPa.

Sourced from our Xinmi City, Zhengzhou, Henan, China facility, each Al₂O₃-MgO-C 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 corundum, magnesium aluminate spinel, super-grade bauxite, high-quality MgO, and flake graphite as main raw materials
Engineering-proven phenolic resin as binder with machine pressing molding technique
Mainly used in bottom and sidewall of ladle with better corrosion and erosion resistance
Good anti-spalling performance and high strength for ladle working layer service
Four LMT chemistry grades covering Al₂O₃ content 60%-70% and MgO content 4%-16% for matching different ladle capacity

Product Specification

Al₂O₃-MgO-C brick is engineered per buyer’s ladle sidewall and bottom lining design. Custom chemistry and geometry available on request.

Brands Items	CH-LMT60	CH-LMT65A	CH-LMT65B	CH-LMT70A
Al₂O₃ content (%)	≥ 60	≥ 65	≥ 65	≥ 70
MgO content (%)	≥ 16	≥ 12	≥ 12	≥ 4
C content (%)	≥ 8	≥ 8	≥ 8	≥ 8
Apparent Porosity (%)	≤ 8	≤ 8	≤ 8	≤ 8
Bulk Density (g/cm³)	≥ 2.90	≥ 2.95	≥ 2.90	≥ 3.00
Cold Crushing Strength (MPa)	≥ 40	≥ 40	≥ 40	≥ 40
Application	The sidewall and bottom of ladle working lining for common carbon steel production

Note: Seven performance parameters specified: Al₂O₃ content, MgO content, C content, Apparent Porosity, Bulk Density, Cold Crushing Strength, and Application. Four LMT chemistry grades engineered for ladle sidewall and bottom working layer service in common carbon steel production. For project-specific chemistry and geometry, contact CH Refractories engineering.

Product Applications

Al₂O₃-MgO-C Brick is a corundum-magnesia-carbon refractory brick manufactured from corundum, magnesium aluminate spinel, super-grade bauxite, high-quality MgO, and flake graphite as main raw materials, with phenolic resin as binder and machine pressing molding technique, engineered for ladle sidewall and bottom working layer service. The product family features better corrosion and erosion resistance as well as good anti-spalling performance for ladle working layer.

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-LMT60 grade (Al₂O₃ content minimum 60%, MgO content minimum 16%, C content minimum 8%) is the high-magnesia workhorse for general ladle sidewall and bottom working layer. The CH-LMT65A grade (Al₂O₃ content minimum 65%, MgO content minimum 12%, C content minimum 8%) is the higher-alumina variant for general ladle working layer. The CH-LMT65B grade (Al₂O₃ content minimum 65%, MgO content minimum 12%, C content minimum 8%) is the standard variant for ladle working layer. The CH-LMT70A grade (Al₂O₃ content minimum 70%, MgO content minimum 4%, C content minimum 8%) is the high-alumina variant for ladle sidewall and bottom working layer. All four grades deliver apparent porosity maximum 8%, bulk density minimum 2.90 to 3.00 g/cm³, and cold crushing strength minimum 40 MPa.

CH Refractories is an Al₂O₃-MgO-C Brick manufacturer in China, Henan, Zhengzhou. The complete Al₂O₃-MgO-C 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.

Product FAQ

Q1: What is Al₂O₃-MgO-C brick and what are the main applications?

A1: Al₂O₃-MgO-C Brick is a corundum-magnesia-carbon refractory brick engineered for ladle sidewall and bottom working layer service. The product family is manufactured from corundum, magnesium aluminate spinel, super-grade bauxite, high-quality MgO, and flake graphite as main raw materials, by phenolic resin as binder and machine pressing molding technique. The product family features better corrosion and erosion resistance, good anti-spalling performance, and high strength. The product is mainly used in the bottom and sidewall of ladle working lining for common carbon steel production in steelmaking operations.

Q2: How many chemistry grades of Al₂O₃-MgO-C brick does CH Refractories offer?

A2: CH Refractories offers four engineering-proven LMT chemistry grades of Al₂O₃-MgO-C Brick. The CH-LMT60 grade features Al₂O₃ content minimum 60% and MgO content minimum 16% for general ladle sidewall and bottom working layer service. The CH-LMT65A grade features Al₂O₃ content minimum 65% and MgO content minimum 12% for higher-magnesia ladle sidewall and bottom working layer. The CH-LMT65B grade features Al₂O₃ content minimum 65% and MgO content minimum 12% for general ladle working layer. The CH-LMT70A grade features Al₂O₃ content minimum 70% and MgO content minimum 4% for high-alumina ladle working layer. All four grades deliver C content minimum 8% for ladle carbon-bearing lining service.

Q3: What are the key physical properties of Al₂O₃-MgO-C brick?

A3: Al₂O₃-MgO-C Brick delivers apparent porosity maximum 8%, bulk density minimum 2.90 to 3.00 g/cm³, and cold crushing strength minimum 40 MPa depending on grade. The CH-LMT60 grade achieves bulk density minimum 2.90 g/cm³, the CH-LMT65A grade achieves minimum 2.95 g/cm³, the CH-LMT65B grade achieves minimum 2.90 g/cm³, and the CH-LMT70A grade achieves minimum 3.00 g/cm³. All four grades deliver cold crushing strength minimum 40 MPa. The product family features better corrosion and erosion resistance, good anti-spalling performance, and high strength for ladle sidewall and bottom working layer service.

Q4: Can the Al₂O₃-MgO-C brick be customized to specific ladle designs?

A4: Yes. CH Refractories offers custom chemistry, geometry, and grade optimization against the buyer's specific ladle capacity, sidewall and bottom lining design, and operating conditions. CH Refractories engineers can adjust Al₂O₃ content, MgO content, C content, and apparent porosity to meet specific smelting conditions. Please send the ladle drawing, capacity, working lining design, and operating temperature data to our engineering team in Xinmi City, Zhengzhou, Henan, China for a free consultation, on-site technical support, and a tailored Al₂O₃-MgO-C brick formulation proposal with optimized grade selection, geometry design, and carbon content adjustment for your specific ladle service conditions.