magnesia iron spinel brick | high strength magnesia spinel bricks

High Strength Magnesia Spinel Bricks

Laurel’s magnesia iron spinel brick series represents a next-generation refractory material designed for high-load and chemically aggressive zones. These high strength magnesia spinel bricks are formulated using synthetic or in-situ spinel developed from high-purity magnesia and iron-bearing or alumina-based additives, delivering exceptional slag resistance, thermal cycling durability, and mechanical integrity.

As a premium magnesia spinel brick for sale, Laurel’s product offers high refractoriness under load and superior structural stability, ideal for environments such as cement kilns, secondary steel refining, and non-ferrous metallurgy.

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Product Details
Table Parameters
Features
Applications
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Product Details

Applications

Cement rotary kiln transition and sintering zones

Steel ladles and purging plugs

Copper and nickel smelting linings

Secondary refining vessels (e.g., AOD, VOD)

Waste incinerators requiring chromium-free materials
As a trusted supplier, Laurel provides magnesia spinel brick for sale in various sizes and formulations, including magnesia iron spinel bricks for aggressive service conditions. Our high strength magnesia spinel bricks offer long-term performance with reduced maintenance cycles and cost savings.

Table parameters

Item		Data
MgO	%	≥80	≥85
Al2O3	%	≥17	≥12
Apparent Porosity	%	≤17	≤16
Bulk Density	g/cm3	≥2.95	≥2.95
Cold Crushing Strength	MPa	≥50	≥45
Refractoriness Under Load (0.2MPa)	℃	≥1680	≥1680
Thermal Shock Resistance Cycle （1100℃，Water）	times	≥12	≥9

Features

Features

Synthetic Spinel for Corrosion Resistance

The bricks feature a durable magnesia iron spinel matrix that significantly reduces slag penetration, particularly from iron- and alkali-rich components common in rotary kilns and steel ladles.

High Mechanical Strength and Load Resistance

These high strength magnesia spinel bricks maintain excellent cold crushing strength and thermal shock resistance, preventing crack propagation during thermal cycling or high-pressure operation.

Reduced Thermal Expansion

With a stable crystalline phase, magnesia spinel bricks limit thermal deformation and enhance refractory longevity in high-temperature zones.

Environmentally Safer Alternative

Free of chromium, the magnesia iron spinel brick meets strict environmental and occupational safety standards, supporting sustainable refractory applications in cement and metallurgy sectors.

Applications

Steel Industry

Aluminum Industry

Cement Industry

Glass Industry

Other metallurgical industries

High Strength Magnesia Iron Spinel Bricks for Extreme Thermal Applications

Insulation and Refractory Materials