1.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.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
Magnesia Brick:
Excellent performance of basic slag resistance, high refractoriness, thermal stability, anti-erosion and anti-peeling
Excellent strength of pressure bending, abrasion proof
Excellent performance of high-temperature firing, high rates of associative property, anti-erosion ability
Excellent thermal shock resistance and spalling resistance
Excellent ability of high refractoriness, anti-erosion of alkaline residue;
High temperature load of refractoriness under load. High mechanical strength
High temperature resistance excellent corrosion resistance
Resistance to spalling
physical and chemical index:
ITEM | Quality Magnesia Brick | |||||
JK-91 | JK-92 | JK-95 | JK-96 | JK-97 | JK-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 | |||||
