Dead burned magnesia, also known as DBM or dead burned magnesium oxide, is produced by high-temperature calcination of magnesite or magnesium oxide. The high-temperature process significantly reduces its chemical reactivity and produces a dense, stable material with excellent resistance to heat and corrosion. This makes dead burned magnesia one of the most widely used raw materials in basic refractory production.
Where Is Dead Burned Magnesia Used?
The largest demand comes from the refractory and steel industries.
Typical applications include:
Magnesia bricks
Magnesia-carbon bricks
Refractory castables
Steelmaking furnaces
Ladle linings
Cement kilns
Non-ferrous metallurgy
Dead burned magnesia is particularly suitable for applications where low chemical reactivity and high-temperature stability are required. High-temperature calcination gives DBM a dense structure and makes it suitable for demanding refractory products.
How Do Buyers Select the Right Grade?
For refractory manufacturers, the most important specifications usually include MgO content, impurity levels and particle size.
Depending on the application, buyers may pay particular attention to:
MgO content
CaO
SiO₂
Fe₂O₃
Al₂O₃
Particle size
Bulk density
A suitable DBM grade should be selected according to the refractory formulation and working conditions rather than simply choosing the highest MgO content available.
Why Consider Chinese Dead Burned Magnesia?
China has a mature magnesia industry supported by significant magnesite resources, especially in Liaoning Province. The region has developed a complete industrial chain for producing different grades of magnesia for refractory applications.
TDHX Groups supplies dead burned magnesia for refractory manufacturers, distributors and industrial customers. We can provide different MgO grades and particle sizes according to application requirements.
For a quotation, send us your required MgO content, size and estimated order quantity.
Written by the technical team at TDHX Minerals, Haicheng, Liaoning, China.
