High quality magnesia brick for glass furnace

1.Magnesia Brick Brief Description

Magnesia bricks are basic refractory bricks. Its magnesia content is from 92% to 97.7%, and cristobalite is as the main crystal phase.Magnesite bricks are generally divided into bonded magnesia refractory bricks and chemical combination magnesia bricks.Magnesia bricks have excellent performance of resistance to alkaline slag,so this kind firebricks are widely used in glass industry, cement industry,steel and ironindustry,etc.

2.Magnesia Brick Catogeries

Magnesite bricks are generally divided into two types:

A） Sintered magnesite bricks

This kind of magnesia refractory bricks include direct combined magnesia bricks and recombined magnesia bricks, and fused magnesia bricks, which are made of natural magnesia sand and fired at the high temperature of 1650 to 1750 ℃, which will be used in high temperature requirement working environment,like the regenerator part of glass furnace. Fused magnesia bricks are taken fused magnesia sand as raw material and fired in the high tempreture tunnel klin. Some people have an incorrect idea the fused magensia bricks are made by casting method.

B) Unburned magnesite bricks

This kind of magnesia bricks include chemical bonded magnesia brick and asphalt bonded magnesite brick, which will be used in low temperature requirement working environment.Chemical bonded magnesia bricks are made with some chemical binders through being shaped and dried.As a professional magnesia bricks manufacturer, Zhengzhou Shennan Refractroy Co.,ltd can produce different high-quality bonded magnesia refractory bricks according to the customers requirements.

3.Magnesia Bricks Applications:

a) In the glass furnace:

grids and heat exchangers of regenerators in the glass furnace, like magnesia checker bricks

b) In the iron and steel industry: steelmaking furnace linings, ferroalloy kilns, and iron mixing furnaces

c) In non-ferrous metallurgical industry furnaces, such as copper, lead, zinc, and side furnace linings;

d) In the building materials industry, such as magnesia bricks in lime kiln, magnesia spinel bricks in the cement rotary kiln.

e) In high-temperature calcining kilns, shaft kilns and tunnel kilns in the refractory manufacturing industry

.

4.Magnesia Bricks Advantages:

lHigh refractoriness

lGood alkali corrosion resistance and slag resistance

lHigh load softening starting temperature

lHigh purityLess pollution to glass liquid

lLong service life and high tempreture resistance

5.Magnesia Brick Technical Data:

Item		Index
		DMZ-95	DMZ-96	DMZ-97	DMZ-98
Chemicalcomposition	MgO %	≥95	≥96	≥97	≥97.5
	SiO2 %	≤1.5	≤1.2	≤1.0	≤0.5
	CaO %	≤1.5	≤1.2	≤1.2	≤0.6
Apparent Porosity %		≤18	≤18	≤17	≤15
Cold Crushing Strength Mpa		≥55	≥60	≥60	≥60
		≥1650	≥1680	≥1700	≥1700
Bulk Density g/cm3		≥2.95	≥3.0	≥3.05	≥3.05
Thermal Stability 950°C Wind cycles		≥15	≥20	≥20	≥20

The above specification is mainly for glass furnace.And the other specifications of Magnesia carbon bricks,magnesica spinel bricks,magnesia alumina bricks and magnesia chrome bricks can be sent to youby Email.

6. Magnesia Brick Manufacturing Process

The main raw material of magnesia brick is magnesia sand. Sintered magnesia bricks are made of magnesia clinker. After being crushed, batched, kneaded, and shaped, they are fired at a high temperature of 1550 to 1650°C. The firing temperature of high-purity products is above 1750°C. Fused magnesia bricks also belongs to sintered magenesia refractory bricks.Non-burn magnesia bricks are made by adding appropriate chemical binders to magnesia, mixing, molding, and drying.

7. Magnesia Brick Usage Notes

Magnesia brick has strong resistance to alkaline slag, but it cannot resist the erosion of acid slag. At a high temperature of 1600℃, it can react with silica bricks, clay bricks and even high alumina bricks. Generally, neutral bricks are used to separate with those bricks. The refractoriness of magnesia brick is above 2000℃, but its softening point under load is only 1500~1550℃. Moreover, the temperature interval from softening to 40% deformation is very small, only 30~50℃ difference, and the thermal stability of magnesia bricks is also poor, which is an important reason for the damage of magnesia bricks. The conductivity of magnesia brick at room temperature is very low, but it cannot be ignored at high temperature (such as 1500℃). If it is used at the bottom of electric furnace, attention should be paid.

8. Magnesia Brick Manufacturers

There are more than 100 manufactuers of magnesia bricks in China,but the quality is quite different.The buyers should not consider too much on low price to choose the supplier. Zhengzhou Shennan Refractory Co.,ltd(SNR)is professinal for producing different magnesia bricks for more than 35 years, and has exported to over 30 countries to customers with good price and high quality. If you have any question or demand of magnesia bricks, magnesia carbon bricks, magnesia spinel bricks and magnesia chorme bricks, please feel free to contact us

Другие товары поставщика

	High quality insulation brick for glass furnace	Insulationrefractory bricks refer to refractory materials with high porosity, low bulk density and low thermal conductivity. Thermal Insulation ref...
	High quality silica brick for glass furnace	Silica Bricks aremade of quartz stone material.The content of SiO2ismore than94%.Silica fire bricksbelonging to acidrefractory bricks,have the exce...
	High quality High Aluminum Brick for glass furnace	High alumina bricks are aluminum silicate neutral refractory materials with aluminum oxide (Al2O3) content higher than 48%. It is made of alumina o...
	High quality Silimanite Brick for glass furnace	Sillimanite brick is a high-grade refractory material, which has the characteristics of low thermal expansion rate, good resistance to metallurgica...
	High quality Magnesia Carbon Brick for glass furnace	Magnesia-carbon bricks are made of high-melting alkaline oxide-magnesium oxide (melting point 2800℃) and high-melting carbon materials that are dif...

Все товары поставщика

Похожие товары

	ETH Ethereum Jasminer X4 BRICK ASIC Miner	Продавец: Shenzhen Dovina Electronic Co.,Ltd	Jasminer x4 brick for sale from Jasminer mining EtHash algorithm with a maximum hashrate of 65Mh/...
	ETH Ethereum Jasminer X4-1U ASIC Miner	Продавец: Shenzhen Dovina Electronic Co.,Ltd	Model ASIC Jasminer X4-1U from Jasminer mining EtHash algorithm with a maximum hashrate of 520Mh/...
	ASIC Miner and Parts	Продавец: Shenzhen Dovina Electronic Co.,Ltd	Get the best ASIC miner for sale from Dovina Miner! Our high-quality mining ASIC machine ensures ...
	High quality silica brick for glass furnace	Продавец: 788366	Corundum refractory bricks are refractory products with alumina content greater than 90% and coru...
	High quality High Aluminum Brick for glass furnace	Продавец: 788366	High alumina bricks are aluminum silicate neutral refractory materials with aluminum oxide (Al2O3...