zhengzhou kerui (group) refractory co.,ltd
Provide Leading Solutions for High Temperature Kilns

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. Moreover, Kerui is a reliable magnesia brick manufacturer with more than 20 years experience.

  • 91-97

    MgO% (≥)

  • 2.86-2.95

    Bulk Density (g/cm³)

  • 1560-1700

    Refractoriness Under Load (℃)

  • 50-65

    Cold Crushing Strength (MPa)

  • Kerui authentication

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Kerui Customized Magnesia Brick

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.

ω (MgO)/%μ097.597.0 96.595.0 94.591.0 89.0
σ1.0 1.5
ω (SiO2)/%μ01.00 1.20 1.50 2.00 2.50 //
ω (CaO)/%μ0///2.00 2.00 3.00 3.00
Apparent Porosity/%μ016161816181820
Bulk Density (g/cm³)μ03.00 3.00 2.952.90 2.85
Cold Crushing Strength/MPaμ06060606050
0.2MPa Refractoriness Underload/℃μ017001700165015601500
Permanent Linear Change/%Xmin~Xmax1650℃*2h

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 magnesia 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 brick includes magnesia refractory brick, magnesia chrome brick, magnesia calcium brick, magnesia alumina spinel brick, magnesia iron brick and so on.

Magnesia Alumina Spinel Brick from Kerui
Magnesia Alumina Spinel Refractory Brick
Magnesia Chrome Brick from Kerui
Magnesia Chrome Refractory Brick
Magnesia Iron Brick Supplierd by Kerui
Kerui Magnesia Iron Refractory 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 price. Commonly unburnt magnesia brick includes magnesia carbon brick, alumina magnesia carbon brick, alumina silica carbon brick, magnesia calcium carbon brick and so on.

Alumina Magnesia Carbon Brick Supplierd by Kerui
Alumina Magnesia Carbon Refractory Brick
Alumina Silica Carbon Brick Supplierd by Kerui
Alumina Silica Carbon Refractory Brick
Magnesia Carbon Brick from Kerui
Magnesia Carbon Refractory Brick

Manufacturing Process of Magnesia Refractory Bricks

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 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.

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 brick adds chemical binder to form dense structure. At this step, customers can require the customized shape.

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 magnesia 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.

Sintering Process

Firing is to enhance the density of magnesia 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.

Packaging and Shipping Process

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

Manufacturing Process of Refractory Brick

Features of Kerui Magnesia Refractory Bricks

Superior Quality

As the main content of magnesia 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 brick made of high quality raw materials has superior quality.

Easy to Use

Flexible magnesia brick can be cut and installed easily to fit various complex shapes and structural needs. Besides, magnesia brick is 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 magnesia brick 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 magnesia brick can reduce the frequency of replacement.

KERUI Magnesia 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 Bricks Uses As Steel-melting Furnace Lining
As the Lining of Steel-melting Furnace
Use Magnesia Refractory Bricks 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 prices for magnesia bricks. Because we are the original manufacturer of magnesia bricks. Besides, Kerui factory is located in Xinmi City, Henan Province, which is rich in mineral resources. 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 magnesia bricks immediately, we recommend you provide the following information:

Application Kilns Application Parts Purchase Volume Purchase Budget Other Special Requirement
Each high temperature kiln has different characteristics and operational requirements. Thus, from the information you provide, magnesia brick supplier can estimate the working temperature, chemical environment and other information in a short time.
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.
Based on your purchasing volumes, magnesia brick manufacturers are able to accurately calculate material and production costs. Thus they can provide you with quotations reflecting economies of scale or any volume-based discounts that may apply.
A clear purchase budget promotes the negotiation process. So it is helpful for magnesia brick suppliers to provide a quote within your financial expectations. Additionally, you can tell us your estimated budget to get suitable kind of 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.
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.

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Reliable 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!

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