Magnesia Bricks Introduction
Magnesia Bricks was prepared with hercynite as raw materials. Application results showed that the kiln coating formed rapidly and stability when using magnesia brick. Magnesia refractory brick had low thermal conductivity and long service life,its overall performance was better than magnesia chrome refractory brick.
Magnesia refractory bricks refractoriness can reach above 2000 °C, the load softening temperature varies greatly depending on the melting point of the cement phase and the amount of liquid phase produced at high temperatures.
Magnesia refractory bricks have a higher thermal conductivity, refractory magnesia brick is second only to carbon refractory bricks and silicon carbide bricks in refractory products, which decreases with increasing temperature.
Refractory Magnesia Bricks Features
1.Poor volume stability at high temperature,must set aside appropriate expansion joint when laying brick.
2.Fireproof magnesia brick have high refractoriness,usually the refractoriness is above 2000°C.
3.Magnesia brick Refractoriness under load about 1500-1550°C because of poor high temperature intensity.
4.Fire brick have strong ability to resist basic (alkaline) slag,can not contact with acid refractory material.
5.Refractory brick have poor thermal shock resistance,so keep the temperature of furnace stabilized.
6.Firebrick have strong ability of thermal conductivity,sometime need insulating material.
7. Refractory brick have keep refractory product away from moisture during storage.
Refractory Magnesia Brick Specification
| Item |
MZ-97 |
MZ-95 |
MZ-93 |
MZ-91 |
| MgO % |
≥97 |
≥95 |
≥93 |
≥91 |
| SiO2 % |
≤1.0 |
≤2.0 |
≤3.5 |
- |
| CaO % |
- |
≤2.0 |
≤2.0 |
≤3.0 |
| Apparent porosity/% |
≤16 |
≤16 |
≤18 |
≤18 |
| Cold crushing strength/ Mpa |
≥60 |
≥60 |
≥60 |
≥60 |
| Refractoriness under load, 0.2MPa, °C |
≥1700 |
≥1650 |
≥1620 |
≥1560 |
| Reheating Linear Change(1650 °C,2h) /% |
0~-0.2 |
0~-0.3 |
0~-0.4 |
0~-0.4 |
Refractory Magnesia Bricks Application
1.Iron Steel Industry
Fireproof magnesia brick used in steel making furnace lining, ferroalloy furnace, metal mixer furnace lining, converter lining, arc furnace wall and furnace bottom, soaking furnace, heating furnace bottom.
2.Non-ferrous metallurgical industry
Magnesia refractory bricks used in copper,nickel,lead,zinc,tin smelting furnace lining, refined copper reverberatory furnace,ore electric furnace lining
3.Glass Industry
Refractory magnesia fire brick is suitable for glass furnace regenerator checker
4.Building Material Industry
Magnesia refractory brick have lime kiln,cement kiln
5.Refractory Material Industry
Magnesia fire bricks have high temperature calcination kiln,shaft kiln and tunnel kiln
Magnesia Bricks Shapes &Sizes in Rongsheng
| Straight |
Split |
Arch |
Wedge |
Tile |
Other Shape |
| L×W×H(mm) |
L×W×H (mm) |
L×W×H/h(mm) |
L×W×H/h (mm) |
L×W×H (mm) |
Key brick, |
| 230×114×65 |
230×114×25 |
230×114×65/45 |
230×114×65/45 |
230×230×38 |
Skew brick, |
| 230×114×75 |
230×114×32 |
230×114×65/55 |
230×114×65/55 |
230×230×50 |
Soap, |
| |
230×114×37 |
230×114×75/45 |
220×114×75/45 |
230×230×65 |
Checker, |
| |
230×114×50 |
230×114×75/55 |
220×114×75/55 |
230×230×75 |
Neck, |
| |
|
230×114×75/65 |
220×114×75/65 |
|
Taper, |
| We also can make refractory brick according to customers’ drawing and requirements. |
Magnesia Brick Manufacturer in RongSheng Refractory Bricks Factory
Rongsheng refractory bricks factory has been engaged in refractory material industry for more than 20 years.
Rongsheng refractory factory can provide specification and category as well as competitive price & high-grade quality refractory factory products.
RongSheng provide qualifications: CE, ISO 9001 2008 Standard, ISO 9001 2015 Standard, OHSAS18001:2007 Standard
If you have any needs in this regard, you can always contact us at Rongsheng Refractory and hope to establish long-term cooperation with your company.
