Magnesium Aluminum Spinel Brick

Magnesium Aluminum Spinel Brick Introduction

Magnesium aluminum spinel in magnesia alumina spinel refractoryh bricks is a generic name for minerals with the same crystalline structure. Generally, mg-aluminum spinel refractory refers to the general structure of MgAl2O4 or MgO·Al2O3, that is, the magnesium aluminum spinel is prepared from high-purity materials, has good corrosion resistance, thermal shock stability. Magnesium aluminum spinel refractory bricks have a few anti-flaking properties. Magnesium aluminate spinel firebrick is the finest advanced refractory material.

Magnesium aluminum spinel brick is a magnesia brick with magnesium-aluminum spinel as the main mineral formed by adding alumina to the furnish to improve the thermal stability of the magnesia brick. Magnesium-aluminum spinel brick is made of high-quality magnesia with low calcium content and industrial alumina powder. Magnesia alumina spinel is formed by high pressure forming and high temperature firing. Magnesia alumina spinel refractory brick has good resistance to quenching and heat, Magnesia alumina spinel firebricks has good corrosion resistance to fluxes such as iron oxides and alkaline slag.

The amount of magnesium aluminum spinel bricks in the production of magnesium-aluminum spinel bricks is not as high as possible. As the amount of spinel increases, the thermal shock resistance is better, but the strength (especially the flexural strength) is caused by the mismatch expansion. ), with Al2O3 as the standard, the Al2O3 in the product should not be greater than 15%~20%, preferably 10%~18%.

The main impurity in magnesium aluminate spinel bricks is SiO2, which should not exceed 1.5%. The advantage of magnesia alumina spinel is that it has good thermal shock resistance. During the process of use, it reacts with clinker to form a thin layer of calcium aluminate protective layer on the surface of the spinel brick, magnesia alumina spinel refractory bricks makes the liquid phase difficult to penetrate and resists peeling performance.Direct combination of mg-chrome bricks are easy to hydrate, the thermal conductivity is large. The temperature of the kiln cylinder is higher than direct combination of mg-chrome bricks.

Magnesium Aluminum Spinel Brick Features

1, Magnesium alumium spine firebricks have good thermal shock, in the process of use will react with clinker, and then form a layer of very thin calcium aluminate protective layer on the surface of the brick. Make the liquid not easy to penetrate.

2, Magnesium alumium spine refractory bricks anti-flaking performance is better than direct combination of magnesia chrome brick. The service life of the cooling zone and transition zone in the kiln can be doubled compared with the direct combination of magnesia chrome bricks. However, it is slightly inferior to the direct combination of magnesia chrome bricks in terms of corrosion resistance.

3. The sintered spinel brick is easy to hydrate, and the thermal conductivity is large. The temperature of the kiln is higher than that when the magnesia chrome brick is directly combined. Pay attention to these issues when using them.

4.The physical and chemical properties of magnesium aluminum spinel bricks are characterized by small thermal expansion, good thermal shock stability, stable chemical properties, and strong resistance to alkaline slag.

Magnesium Aluminum Spinel Brick Specification

Item Brand	Mg0 (%)	Al2o3 (%)	Sio2 (%)	Bulk Density (g/cm3)	Apparent Density (%)	Cold Crushing Strength (Mpa)	Refractoriness under Load of 0.2 Mpa (℃)	ThermalShock Stability(1000℃,water,quencing,cycle)
RS-85A	85	9	1.0	18	2.95	45	1700	100
RS-85B	82	9	2.0	18	2.90	40	1700	80
RS-85C	80	9	3.0	19	2.85	40	1650	70
RS-93A	93	5	1.0	18	2.95	45	1700	80
RS-90B	90	5	2.0	18	2.90	40	1700	70

Magnesium Aluminum Spinel Brick Application

Magnesium alumium spine firebricks main use: First, instead of magnesium chrome sand, magnesium-aluminum spinel brick is used in cement rotary kiln, which not only avoids chrome pollution, but also has good resistance to spalling

second, Magnesium alumium spine firebricks is used to make ladle castable , greatly improve the erosion resistance of the steel lining. Magnesium alumium spine is widely used in steelmaking refractories. The preparation of high quality pre-synthesized spinel provides new raw materials for the production of amorphous and shaped high-purity refractories.

Why Choose Magnesium Aluminum Spinel Brick from RS Refractory Bricks Manufacture 

1.Do’t Worry About The Magnesium aluminum spinel brick Price

We are the manufacturer of refractory bricks, provide high quality and low price silicate brick products, giving the ex-factory price.

2.Don't Worry about Magnesium aluminum spinel brick Quality

We can provide quality inspection certificates to ensure that you can buy us with guarantee quality products. Provide refractory brick certificates, such as, CE,ISO 9001 2008 Standard,ISO 9001 2015 Standard,OHSAS18001:2007 Standard and so on.

3.Don't Worry about Our Professional Level

We have professional technical guidance, all your technical doubts, our professional engineers answer your any questions.Solve all products issue you encounter.

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