Magnesia Refractory Bricks

As an important consumable in refractory industry, magnesia refractory bricks are in great need. This brick is commonly made of multi minerals and has strong alkaline and high density. Kerui is a reliable manufacturer with 20 years of experience.

89-97.5%

MgO (≥)
2.85-3.00g/cm³

Bulk Density
1500-1700℃

Refractoriness Under Load
50-60MPa

Cold Crushing Strength

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Parameters of Kerui Magnesia Refractory Brick

The biggest difference among each kind of magnesia brick for sale is the content of MgO. Therefore, in line with the parameters and your specific demands, you can find suitable magnesium oxide bricks for your project. Contact Kerui to receive more information.

Item/Grade		M-98	M-97A	M-97B	M-95A	M-95B	M-91	M-89
ω (MgO)/%	μ₀ ≥	97.5	97.0	96.5	95.0	94.5	91.0	89.0
ω (MgO)/%	σ	1.0					1.5
ω (SiO₂)/%	μ₀ ≤	1.00	1.20	1.50	2.00	2.50	/	/
ω (SiO₂)/%	σ	0.30
ω (CaO)/%	μ₀ ≤	/	/	/	2.00	2.00	3.00	3.00
ω (CaO)/%	σ	0.30
Apparent Porosity/%	μ₀ ≤	16	16	18	16	18	18	20
Apparent Porosity/%	σ	1.5
Bulk Density (g/cm³)	μ₀ ≥	3.00	3.00		2.95		2.90	2.85
Bulk Density (g/cm³)	σ	0.30
Cold Crushing Strength/MPa	μ₀ ≥	60	60		60		60	50
	X_min	50	50		50		50	45
	σ	10
0.2MPa Refractoriness Underload/℃	μ₀ ≥	1700	1700		1650		1560	1500
0.2MPa Refractoriness Underload/℃	σ	15
Permanent Linear Change/%	X_min~X_max	1650℃*2h -0.2-0			1650℃*2h -0.3-0		1600℃*2h -0.5-0	1600℃*2h -0.6-0

Introduction of Kerui Magnesia Refractory Bricks

The main raw material of Kerui magnesia bricks is magnesia (MgO), with a content as high as 91%. Meanwhile, it has high refractoriness at 2000℃ (3632℉) and strong resistance to alkaline corrosion. Besides, Kerui offers large-scale magnesite refractory bricks for sale continuously. Addtionally, according to different manufacturing processes, Kerui magnesium brick can be classified into burnt refractory brick and unburnt refractory brick:

Burnt Magnesia Refractory Bricks

Burnt magnesia brick needs sintering process with high temperatures to combine particles in the bricks tightly. Therefore, this brick has higher density and durability. Generally, burnt magnesia in brick includes magnesia refractory brick, magnesia chrome brick, magnesia calcium brick, magnesia alumina spinel brick, magnesia iron brick and so on.

KERUI Magnesia Alumina Spinel Brick — Magnesia Alumina Spinel Brick

KERUI Magnesia Chrome Brick — Magnesia Chrome Brick

KERUI Magnesia Iron Spinel Brick — Magnesia Iron Spinel Brick

Unburnt Magnesia Refractory Bricks

Unburnt magnesia brick adapts chemical or physical reactions to form a dense structure. Meanwhile, it has a shorter production cycle and lower magnesite bricks price. Commonly unburnt magnesia brick includes magnesia carbon brick, alumina magnesia carbon brick, alumina silica carbon brick, magnesia calcium carbon brick and so on.

KERUI Magnesia Carbon Brick — Magnesia Carbon Brick

Alumina Silica Carbon Brick Supplierd by Kerui — Magnesia Calcium Carbon Refractory Brick

Alumina Magnesia Carbon Brick Supplierd by Kerui — Alumina Magnesia Carbon Refractory Brick

Magnesite Bricks Manufacturing Process

Step1

Processing of Raw Materials

Kerui uses high-purity and high-quality magnesia as the raw material for making magnesia refractory bricks. In order to improve the slag resistance and permeability of magnesia in bricks, Kerui workers grind high-quality magnesia into fine powder and add it to the automatic batching machine when processing raw materials. Meanwhile, the automatic batching machine can carry out precise ratio.

Step2

Molding Process

Magnesia bricks have less water content. Additionally, Kerui shapes these bricks by 20 sets of press machines. With the increase of molding pressure, the strength, density and load softening temperature of magnesia bricks after firing will also increase. Meanwhile, unburnt magnesia in bricks adds chemical binder to form dense structure. At this step, customers can require the customized shape.

Step3

Drying Process

Magnesia bricks are dried to remove excess water in the binder to improve the strength of the brick embryo. At the same time, it should be noted that the drying temperature of magnesium bricks is low. Higher temperatures may accelerate the hydration of magnesia, which is not conducive to water removal. Therefore, it’s worth noting that unburnt brick uses medium temperature to dry extra water.

Step4

Sintering Process

Firing is to enhance the density of magnesite bricks. In addition, the firing temperature increases with the increase in magnesium content. Generally, the firing temperature of magnesia bricks is about 1500°C. Meanwhile, the PLC control room can control the firing temperature and the position of the kiln car in real-time to ensure that the temperature in the kiln is stable. Therefore, the quality is relatively stable.

Step5

Packaging and Shipping Process

Kerui has strict requirements for the packaging of finished magnesia bricks. In order to ensure the best customer experience, magnesium bricks must be stored in a dry and ventilated place. Additionally, the gap between basic refractory bricks must be uniform and firm. Then the finished magnesite bricks will be strictly packed and sent to the customer’s location. Kerui ensures safe and timely delivery.

$Manufacturing Process of Magnesia Refractory Brick$

Features of Kerui Magnesia Refractory Bricks

Superior Quality

As the main content of magnesium brick, MgO has high melting point, which results in high refractoriness. Besides, Kerui factory is located in Xinmi City, Henan Province, it owns rich mineral resources for refractory materials. Therefore, Kerui magnesia bricks properties have superior perforance.

Easy to Use

Flexible magnesia brick can be cut and installed easily to fit various complex shapes and structural needs. Besides, magnesite bricks are relatively lighter than other refractory bricks, which is convenient for workers to carry and operate. Therefore, you can contact Kerui to customize magnesia brick to save your time and energy on cutting.

Energy Saving

Kerui magnesia brick has strong thermal conductivity. Meanwhile, this means that magnesite bricks is able to absorb and release heat quickly, which improves working efficiency and heat energy utilization. Additionally, by using magnesia fire resistance brick in your kilns, the heat can spread soon and reduce energy consumption.

Long Service Life

Compared with magnesia refractory bricks from other suppliers, Kerui’s brick uses better raw materials and more advanced production technology. Therefore, Kerui magnesium brick is harder and has higher density. At the same time, customers who invest in Kerui magnesium brick can reduce the frequency of replacement.

$KERUI Magnesia Refractory Brick$

$Kerui MgO Refractory Brick$

Functions of Magnesia Refractory Bricks

Steel and Iron Industry

Steel melting furnace lining;
The ferroalloy fiber cable furnace;
Basic open-hearth furnace;
Hyperthermia tunnel kiln;
Permanent layers in steel making converters, AOD furnaces;
Steel ladles and BOF;
Other parts of steel and iron furnace;

Cement Industry

Lining of rotary cement kiln;
Bottom and wall of heating furnace;
Lime kilns;
Calcination kiln;
shaft kiln;
other parts of cement kilns;

Non-ferrous Industry

Slag line;
Linings of copper, lead, zinc, tin furnace;
Tapping hole of metal mixer furnaces
Other parts of non-ferrous furnaces;

Glass Industry

Chimney block;
Regenerative chamber;
Flue and combustion chamber;
Other parts of glass furnace.

Magnesia Refractory Brick Uses As Steel-melting Furnace Lining — As the Lining of Steel-melting Furnace

Use Magnesia Refractory Brick in Rotary Cement Kiln Lining — As the Lining of Rotary Cement Kiln

Kerui Magnesia Refractory Bricks Price

Kerui magnesite brick price is determined according to the product performance, specifications, quantity, etc. required by customers. So if you want to get a detailed refractory brick price list, please tell Kerui your detailed requirements. Then compared with the same industry, Kerui offers more reasonable magnesite bricks prices. Because we are the original magnesia bricks manufacturer. Besides, Kerui factory is located in Xinmi City, Henan Province, which is rich in mineral resources. This basic refractory bricks consist of high quality materials. Moreover, Kerui’s lower production cost has brought about a fair price for magnesia bricks.

Meanwhile, if you want to get a detailed quotation for magnesium bricks immediately, we recommend you provide the following information:

Application Kilns

Each high temperature kiln has different characteristics and operational requirements. Thus, according to the information you provide, magnesia brick supplier can estimate the working temperature, chemical environment and other information in a short time. Therefore, you can get products that suits your project.

Application Parts

The corner of high temperature kilns may need magnesia brick with high resistance to corrosion. Meanwhile, the bottom of kilns may need magnesium brick with higher refractoriness. In conclusion, there may be differences in formula, material and fire bricks manufacturing in different parts.

Purchase Volume

Based on your purchasing volumes, magnesite brick manufacturers are able to accurately calculate material and production costs to realize accurate magnesite bricks properties. Thus they can provide you with quotations reflecting economies of scale or any volume-based discounts that may apply.

Purchase Budget

A clear purchase budget promotes the negotiation process. So it is helpful for magnesium brick suppliers to provide a quote within your financial expectations. Additionally, it’s highly efficient to tell Kerui about your estimated budget to get suitable kind of magnesite refractory bricks.

Delivery Requirement

The magnesium oxide bricks suppliers need to arrange production plans and material supply chains according to delivery deadlines. Meanwhile, knowing your delivery deadlines in advance can help suppliers deploy the necessary resources and ensure smooth production and delivery.

Other Special Requirement

Customized magnesia brick may cost a little more. Besides, the brick also brings more benefits to your project. No matter whether you have special requirements on colors, shapes, chemical compositions, marks on final products or other aspect, Kerui is confident to satisfy.

$Reliable Magnesia Brick Manufacturer – Kerui Refractory$

All in all, Kerui magnesia brick has been used in various fields. Therefore, it’s crucial for customers to choose high quality magnesia brick from reliable manufacturers. If you’re looking for good magnesia brick with favorable price, please contact Kerui now!