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Help CenterHigh Erosion Resistance Magnesia Iron Spinel Bricks for Cement Rotary Kiln Sintering Zone
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Overview
Quick Details
Place of Origin:Henan, China Shape:Block
Material:magneisite SiO2 Content (%):1.5-2
Fe2O3 Content (%):7-9 MgO Content (%):80
CaO Content (%):0 Refractoriness (Degree):Common (1580°
Cr2O3 Content (%):3-5 SiC Content (%):0
Model Number:hcr Brand Name:HCR
Supply Ability
3000 Metric Ton/Metric Tons per Month
Port
Tianjin Port
Introduction of magnesia iron spinel brick
Raw material: divalent iron-aluminum spinel (FeO·Al2O3) and high-purity magnesia
Background: Magnesia-iron spinel brick is a new type of chromium-free refractory for cement rotary kiln that was first developed in Europe in the late 1990s.
Why special: During the firing process, the firing temperature and firing atmosphere are strictly controlled to ensure the iron oxide in the brick is FeO.
In the process of using magnesium iron spinel brick, a layer of highly viscous calcium-iron and calcium-iron-aluminum compound is formed on the hot surface of the brick, which is easy to hang the kiln skin.
Features of Magnesia iron spinel brick
Magnesia-iron spinel bricks have high thermomechanical properties and thermochemical properties in addition to the excellent kiln skin properties of magnesia-chrome bricks
Index of magnesia iron spinel brick
Item |
Magnesia-iron spinel brick |
High toughness magnesia-iron spinel brick |
MgO% ≥ |
85 |
88 |
Fe2O3% |
5-7.5 |
5-6 |
SiO2% |
2 |
1.5 |
Al2O3% |
3.0-5.0 |
4.0-7.0 |
apparent porosity% |
17 |
16 |
volume density g/cm3 |
3 |
2.9 |
cold compressive strength Mpa |
45 |
55 |
0.2MPa refractoriness under load, ℃ |
1600 |
1650 |
Thermal shock stability(1100℃~water cooling), times |
6 |
8 |
Thermal conductivity W/MK |
2.6 |
2.6 |
Thermal expansion % (1400℃) |
1.6 |
1.7 |
Application of magnesia iron spinel brick
It widely be used in the cement rotary kiln sintering zone.
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