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Magnesia-alumina-chrome spinel composite brick

Application Industry: Refractories for Nonferrous Metal Industry

Application Equipment: Nonferrous Metal Zinc Volatilization Kiln, Copper Smelting Furnace, and Other Erosion-Serious Parts

Size: Custom magnesia-alumina-chrome spinel composite brick geometry per nonferrous metal furnace design (free engineering on request)

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Products Overview

Our Magnesia-alumina-chrome spinel composite brick is a high-performance refractory product engineered for nonferrous metal zinc volatilization kiln, copper smelting furnace, and other erosion-serious parts service. The product is a product obtained by high-pressure molding and high-temperature sintering using high-purity magnesia and magnesia-chromium composite spinel as main raw materials. The product not only has high strength, good thermal shock resistance, but also has anti-erosion, anti-penetration and anti-reduction ability, and has good effects on high-temperature kiln such as zinc volatilization kiln.

The Magnesia-alumina-chrome spinel composite brick product family is offered in two engineering-proven MAGE chemistry grades. The MAGE-75A grade features MgO content minimum 75%, Al₂O₃ content 9-13%, and Cr₂O₃ content maximum 3-6% for highest-demand nonferrous metal smelting service, with Bulk Density minimum 2.95 g/cm³, Apparent Porosity maximum 18%, Cold Crushing Strength minimum 50 MPa, 0.2MPa Refractoriness Under Load minimum 1700 °C, and Thermal Shock Resistance minimum 8 cycles at 1100 °C water cooling. The MAGE-75B grade features MgO content minimum 70%, Al₂O₃ content 9-13%, and Cr₂O₃ content maximum 3-6% for higher-demand nonferrous metal smelting service, with Bulk Density minimum 2.95 g/cm³, Apparent Porosity maximum 18%, Cold Crushing Strength minimum 45 MPa, 0.2MPa Refractoriness Under Load minimum 1650 °C, and Thermal Shock Resistance minimum 6 cycles at 1100 °C water cooling. Both grades deliver good effects on high-temperature kiln such as zinc volatilization kiln.

Sourced from our Xinmi City, Zhengzhou, Henan, China facility, each Magnesia-alumina-chrome spinel composite brick grade is engineered to ASTM, GB/T, and ISO refractory standards. For an overview of the broader catalogue, see the Refractories for Nonferrous Metal Industry category, or contact our technical sales team for a free consultation against your refractory drawing.

Product Features

Features:

Manufactured from high-purity magnesia and magnesia-chromium composite spinel as main raw materials with high pressure molding and high temperature sintering process
Engineering-proven high strength, good thermal shock resistance, and anti-erosion, anti-penetration, and anti-reduction ability
Two MAGE chemistry grades covering MgO content 70-75% and Al₂O₃ content 9-13% for matching different nonferrous metal smelting service requirements
Bulk Density minimum 2.95 g/cm³ with Apparent Porosity maximum 18% for high density and stable service
0.2MPa Refractoriness Under Load minimum 1650-1700 °C and Thermal Shock Resistance minimum 6-8 cycles for high temperature and high wear service

Product Specification

The product is a product obtained by high-pressure molding and high-temperature sintering using high-purity magnesia and magnesia-chromium composite spinel as main raw materials. The product not only has high strength, good thermal shock resistance, but also has anti-erosion, anti-penetration and anti-reduction ability, and has good effects on high-temperature kiln such as zinc volatilization kiln.

Brands / Items	MAGE-75A	MAGE-75B
MgO (%) ≥	75	70
Al₂O₃ (%)	9-13	9-13
Cr₂O₃ (%) ≤	3-6	3-6
Apparent porosity (%) ≤	18	18
Compressive strength CCS (MPa) ≥	50	45
0.2MPa load softening temperature R.U.L°CT0.6 ≥	1700	1650
T.S.R. (1100°C water-cycle) ≥	8	6
Bulk density BD (g/cm³) ≥	2.95	2.95

Note: Eight performance parameters specified: MgO content, Al₂O₃ content, Cr₂O₃ content, Apparent porosity, Compressive strength, 0.2MPa load softening temperature, T.S.R., and Bulk density. Two MAGE chemistry grades engineered for nonferrous metal zinc volatilization kiln, copper smelting furnace, and other erosion-serious parts service. For project-specific chemistry and geometry, contact CH Refractories engineering.

Product Applications

Magnesia-alumina-chrome spinel composite brick is a high-performance refractory product engineered for nonferrous metal zinc volatilization kiln, copper smelting furnace, and other erosion-serious parts service. The product is a product obtained by high-pressure molding and high-temperature sintering using high-purity magnesia and magnesia-chromium composite spinel as main raw materials. The product not only has high strength, good thermal shock resistance, but also has anti-erosion, anti-penetration and anti-reduction ability, and has good effects on high-temperature kiln such as zinc volatilization kiln.

Application Industry: Refractories for Nonferrous Metal Industry.

Target Equipment: Nonferrous Metal Zinc Volatilization Kiln, Copper Smelting Furnace, and Other Erosion-Serious Parts of small, medium-size, and large nonferrous metal industrial operations.

Specific Application Zones: The MAGE-75A grade (MgO content minimum 75%) is the highest-demand variant for nonferrous metal smelting service, with 0.2MPa Refractoriness Under Load minimum 1700 °C and Thermal Shock Resistance minimum 8 cycles at 1100 °C water cooling. The MAGE-75B grade (MgO content minimum 70%) is the higher-demand variant for nonferrous metal smelting service, with 0.2MPa Refractoriness Under Load minimum 1650 °C and Thermal Shock Resistance minimum 6 cycles at 1100 °C water cooling. Both grades deliver Bulk Density minimum 2.95 g/cm³, Apparent Porosity maximum 18%, Cold Crushing Strength minimum 45 to 50 MPa depending on grade, and good effects on high-temperature kiln such as zinc volatilization kiln.

CH Refractories is a Magnesia-alumina-chrome spinel composite brick manufacturer in China, Henan, Zhengzhou. The complete Magnesia-alumina-chrome spinel composite 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 Nonferrous Metal Industry customers across the global nonferrous metal value chain.

Product FAQ

Q1: What is magnesia-alumina-chrome spinel composite brick and what are the main applications?

A1: Magnesia-alumina-chrome spinel composite brick is a high-performance refractory product engineered for nonferrous metal zinc volatilization kiln, copper smelting furnace, and other erosion-serious parts service. The product is a product obtained by high-pressure molding and high-temperature sintering using high-purity magnesia and magnesia-chromium composite spinel as main raw materials. The product not only has high strength, good thermal shock resistance, but also has anti-erosion, anti-penetration and anti-reduction ability, and has good effects on high-temperature kiln such as zinc volatilization kiln.

Q2: How many chemistry grades of magnesia-alumina-chrome spinel composite brick does CH Refractories offer?

A2: CH Refractories offers two engineering-proven MAGE chemistry grades of Magnesia-alumina-chrome spinel composite brick. The MAGE-75A grade features MgO content minimum 75%, Al₂O₃ content 9-13%, and Cr₂O₃ content maximum 3-6% for highest-demand nonferrous metal smelting service. The MAGE-75B grade features MgO content minimum 70%, Al₂O₃ content 9-13%, and Cr₂O₃ content maximum 3-6% for higher-demand nonferrous metal smelting service. Both grades deliver good effects on high-temperature kiln such as zinc volatilization kiln.

Q3: What are the test conditions for magnesia-alumina-chrome spinel composite brick?

A3: Magnesia-alumina-chrome spinel composite brick delivers Bulk Density minimum 2.95 g/cm³ for both grades. Apparent Porosity is maximum 18% for both grades. Cold Crushing Strength is minimum 50 MPa for MAGE-75A and minimum 45 MPa for MAGE-75B. 0.2MPa Refractoriness Under Load is minimum 1700 °C for MAGE-75A and minimum 1650 °C for MAGE-75B. Thermal Shock Resistance is minimum 8 cycles at 1100 °C water cooling for MAGE-75A and minimum 6 cycles for MAGE-75B. The product family has high strength, good thermal shock resistance, anti-erosion, anti-penetration, and anti-reduction ability for nonferrous metal smelting furnace service.

Q4: Can the magnesia-alumina-chrome spinel composite brick be customized to specific nonferrous metal smelting furnace designs?

A4: Yes. CH Refractories offers custom chemistry, grade, and geometry optimization against the buyer's specific nonferrous metal zinc volatilization kiln, copper smelting furnace, and other erosion-serious parts design and operating conditions. CH Refractories engineers can adjust MgO content, Al₂O₃ content, Cr₂O₃ content, raw material formulation, and high-pressure molding process to meet specific nonferrous metal smelting furnace service temperature and erosion conditions. Please send the nonferrous metal smelting furnace drawing, lining design, furnace capacity, 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 magnesia-alumina-chrome spinel composite brick formulation proposal with optimized grade selection, raw material adjustment, and geometry design for your specific nonferrous metal smelting furnace service conditions.