82% MgO content magnesite alumina spinel block from China
manufacturer
Magnesia alumina spinel brick is made of magnesia alumina spinel,
magnesia alumina spinel bricks are in order to improve the heat
stability of magnesia brick, based on magnesia bricks, add alumina
oxide in ingredient. Magnesite alumina spinel brick has the
advantages of good heat stability, in the process of use, magnesia
alumina spinel firebrick will have reaction with clinker and
produce a thin layer of calcium aluminate maskant, which makes the
liquid not easy to penetrate, magnesia alumina spinel refractory
brick anti stripping performance is better than the direct bonded
magnesia chrome brick.
Magnesia Alumina Spinel Brick Description
Magnesia alumina spinel firebrick 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 alumina spinel fire brick is made of high
quality magnesia with low calcium content and industrial alumina
powder. magnesium alumina spinel firebrick 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.
Properties of Magnesia Alumina Spinel Brick
.High melting temperature,
.Low thermal expansion,
.Good thermal shock resistance,
.Good anti-stripping capacity,
.High temperature strength,
.Volume stability.
Manufacturing Process of Magnesia Alumina Spinel Brick
The main impurity in magnesium alumina 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 brick makes the liquid phase
difficult to penetrate and resists peeling performance.
Advantage of Magnesia Alumina Spinel Brick
Advantage of magnesium aluminate spinel brick is good thermal
stability, will react with clinker in the process of use, and then
on the surface of brick form a very thin layer of calcium aluminate
layer, bauxite sintering magnesium aluminum spinel using Al203
content more than 76% of the high quality bauxite and the content
of MgO style more than 95% of the light burning magnesium powder
with high quality.
Magnesia Alumina Spinel Brick Specifications
| Technical Specification | Unit | MA-08 | MA-18 | MA-13 |
| Thermal Resistance | ℃ | >1700 | >1700 | >1700 |
| Bulk Density | kg/m³ | 2900-3050 | 2900-3050 | 2800-3000 |
| Apparent Porosity | % | 13-16 | 15-18 | 17-19 |
| Compressive Strength | N/mm² | 55-100 | 55-100 | 55-100 |
| Temperature deformation under load |
| To5 | ℃ | 1700 | 1700 | 1700 |
| T5 | ℃ | 1760 | 1760 | 1760 |
| Thermal shock resistance(1000 °C / air) | Times | >30 | >30 | >30 |
| The chemical composition |
| MgO | % | 85-90 | 76-81 | 79-84 |
| Al₂O₃ | % | 08-12 | 18-22 | 13-17 |
| CaO | % | <1.5 | <1.6 | <2.0 |
| SiO₂ | % | <0.6 | <0.8 | <1.2 |
| Fe₂O₃ | % | <0.8 | <0.9 | <0.8 |
Application of Magnesia Alumina Spinel Brick
The magnesia alumina spinel brick can be used in the cement kiln,
not only avoid the chrome pollution, and has good anti stripping
performance. magnesia alumina spinel refractory brick is widely
applied to steel making refractory material. The preparation of
high quality pre synthertic spinel provide a new material for
amorphous and fixed high purity refractory. Also magnesia alumina
spinel firebrick can be used in refractory carstables for ladles,
which greatly improve the anti erosion ability.
Magnesia Alumina Spinel Brick Manufacturer from RS Refractory
Factory
RS refractory factory as a professional magnesia alumina spinel
bricks manufacturer in china, have many competitive advantages in
the market. And as a professional magnesia alumina spinel brick
supplier in china can supply high quality and cheap magnesite
alumina spinel brick. Advanced production technology and
manufacturing equipment provide the base for our quality magnesia
alumina spinel firebrick. if you have demand of magnesia alumina
spinel fire brick or have some questions on magnesia alumina spinel
brick about physical and chemical indicators, please contact us for
free, we will provide you with high quality magnesium alumina
spinel fire brick.
