for galss furnace fireproof brick magnesia brick
Negotiable /Ton
Min.Order:1 Ton
Zhengzhou Sunrise Refractory Co., Ltd.
brief introduction of magnesia bricks
1. production: The products are fused magnesia as main raw material, after a reasonable size distribution, high pressure forming, high-temperature sintering. The product has strong resistance to slag corrosion ability and high temperature dimensional stability. Mainly used in glass furnace regenerator, the upper part.
2. Applicaiton: The regular magnesia bricks are made from dense dead burned magnesia that makes the bricks in good refractoriness, corrosion-resistance, and widely used in checker chamber of glass tank, lime kiln, non-ferrous metallurgical furnaces, open heart furnace, iron mixer and EAF of steel-making, and also ferro-alloy furnace, etc.
The bricks with MgO 95% or more in content take the secondary-burning dead burned magnesia or electrofused magnesia as the raw material and bured under the condition of ultra high temperature. They have the features of highly directly bonded and corrosion-resistance and widely used in various kinds of high temperature kilns and furnaces
physical and chemical index:
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| Quality Magnesia Brick | ||||
MZ-91 | MZ-92 | MZ-95 | MZ-96 | MZ-97 | MZ-98 | |
MgO % | ≥91 | ≥92 | ≥94.5 | ≥95.5 | ≥96.5 | ≥97.5 |
SiO2 % | ≤3.5 | ≤3.0 | ≤2.0 | ≤1.5 | ≤1.0 |
|
CaO % | ≤3 | ≤2.5 | ≤2.0 | ≤1.8 | ≤1.5 | ≤1.2 |
Apparent Porosity % | ≤18 | ≤18 | ≤18 | ≤18 | ≤17 | ≤17 |
Cold Crushing Strength Mpa | ≥58 | ≥60 | ≥60 | ≥60 | ≥60 | ≥60 |
Bulk Density g/cm3 | ≥2.9 | ≥2.9 | ≥2.95 | ≥3.0 | ≥3.05 | ≥3.1 |
0.2Mpa Refractoriness Under Load T0.6 | ≥1550 | ≥1600 | ≥1650 | ≥1650 | ≥1700 | ≥1700 |
Thermal Stability 950°C Wind cycles |
|
| ≥20 | ≥20 | ≥20 | ≥20 |
Reheat liner change 1650°C×2h % | ≤0.5 |
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