Dead Burnd Magnesia
94%-98% Dead burned magnesia

94%-98% Dead burned magnesia

94%-98% Dead burned magnesia is made of natural super-grade magnesite ore. It is made by light burning, fine grinding, pressing balls and calcining in ultra-high temperature oil shaft kiln. It is a high-quality raw material for brick making and uncertain refractories.

Product Description

This high-purity dead-burned magnesia, with the chemical formula MgO, is primarily utilized in steel-making, electric furnace bottoms, and ramming furnace linings.High purity magnesia is obtained from superior magnesite through a process involving light burning, fine grinding, dry ball indentation, and sintering at an extra high temperature in an oil shaft. The resulting product contains over 97% MgO with low impurity levels. The magnesite crystals are directly bonded, creating a dense and structured composition.

High-purity dead-burned magnesia has high purity, high density, and excellent high-temperature performance. It is a high-quality raw material for making bricks and monolithic refractory materials. It is also an important part of lining refractories for high-temperature furnaces in industries such as iron and steel, nonferrous metallurgy, refractory materials, glass, and cement.

Product Parameters


Coarse Sizes1-15 mm, 3-15 mm, 5-15 mm, 3-8 mm, 5-10 mm, customizable
Small Fractions0-1 mm, 0.5-1 mm, 1-3 mm, 1-5 mm, 200 mesh, customizable
Packing1.35 Ton Bags, customizable

FAQs about High-Purity Dead-Burned Magnesia

1. What is high-purity dead-burned magnesia (DBM)?

High-purity dead-burned magnesia (DBM) is a type of magnesia product that has undergone a high-temperature calcination process, resulting in a chemically stable and refractory material. It is composed mainly of magnesia (MgO) and possesses high levels of purity, making it suitable for various industrial applications.

2. What are the key characteristics of high-purity DBM?

High-purity DBM is characterized by its exceptional purity levels, typically above 95% MgO content. It also exhibits excellent resistance to heat, corrosion, and chemical reactions. Due to its low impurity levels, it is ideal for applications where high refractoriness and chemical stability are required.

3. What are the main applications of high-purity DBM?

High-purity DBM finds applications in several industries. Some common uses include:

Refractory industry: High-purity DBM is widely utilized in manufacturing refractory bricks, crucibles, and other heat-resistant components.

Steel industry: It is used for lining furnaces and converters due to its ability to withstand high temperatures and harsh conditions.

Ceramic industry: High-purity DBM is a crucial ingredient in ceramic products, ensuring thermal stability and improved mechanical properties.

Environmental applications: It is employed in environmental protection processes like flue gas desulfurization (FGD) to remove sulfur dioxide from exhaust gases.

4. How is high-purity DBM produced?

The production of high-purity DBM involves the calcination of raw magnesite ore at high temperatures, typically above 1500°C (2732°F). This process removes any volatile impurities and transforms the magnesite into magnesia or MgO. The final product is then carefully processed and ground to achieve the desired purity and particle size distribution.

5. What sets high-purity DBM apart from other magnesia products?

The key differentiating factor of high-purity DBM is its exceptionally low levels of impurities, including calcium oxide (CaO) and silica (SiO2). These impurities are reduced to negligible amounts during the high-temperature calcination process, making it a top choice for applications demanding high chemical purity.

6. How is high-purity DBM stored and handled?

High-purity DBM should be stored in a dry and cool environment to prevent moisture absorption, which can affect its performance. It is essential to handle the product with care to avoid contamination, as even small impurities can impact its properties when used in critical applications.

7. Is high-purity DBM hazardous to health or the environment?

High-purity DBM is generally considered safe to handle. However, like most fine powders, inhalation of dust should be avoided, as it may irritate the respiratory system. It is recommended to wear appropriate personal protective equipment (PPE) when handling the material. Regarding the environment, high-purity DBM is not known to be hazardous and is considered environmentally friendly.

8. Can high-purity DBM be used in combination with other materials?

Yes, high-purity DBM is often used in combination with other refractory materials or binders to achieve specific properties or meet the requirements of particular applications. Proper mixing and testing should be conducted to ensure the compatibility and performance of the composite materials.

9. Where can I purchase high-purity DBM?

High-purity DBM can be purchased from various industrial chemical suppliers or refractory material manufacturers. It is essential to verify the product's specifications, quality, and certifications before making a purchase.

10. Can high-purity DBM be recycled or reprocessed?

High-purity DBM can be recycled or reprocessed to some extent, especially in industries where reclaiming and reusing refractory materials are common practices. However, the effectiveness of recycling depends on the extent of contamination and the application it is being reused for. Proper testing and evaluation should be performed to determine its suitability for recycling.

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+86 189 5430 6666

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