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Magnesia-Based Refractory Materials

Dead Burned Magnesite (DBM)

Product Description:

DBM is a crucial component in the production of oil and gas well-cementing slurries. It is a fine ground, yellow to brown powder made from dead burnt magnesite (magnesium oxide), which is manufactured by calcining high-purity natural magnesite. The addition of DBM ensures zonal isolation and excellent bonding between the cement and the casing, providing the necessary expansion for effective cementing.

DBM has been specifically designed for use in oil and gas well cementing, as it does not affect the rheological behavior or setting time of the cement. Compared to an industry reference composed of 99% dead burnt magnesite, DBM produces a significantly higher amount of expansion, with more than 8 times the expansion in 10 days.

Furthermore, DBM has been developed for use in temperatures above 85°C and offers a wider range of dosages without causing excessive expansion. At our company, we take pride in providing high-quality DBM that meets the specific needs of our clients in the oil and gas industry.

DBM is used as an expansion additive in oil well cementing to provide sufficient expansion of the cement, ideal for use in high temperatures. It can be used in manufacturing refractory materials and bricks. End products are applied in the steelification ramming lining.

Material is available in 25 kg bags and 1000 kg bulk bags. Further packaging options may be available upon inquiry.

The product should be stored in a dry place in sealed, original packaging away from direct sunlight. Shelf life is 12 months
from manufacturing date if stored in the above conditions.

Further safety information on product SDS is available from your MG Refractories contact.

Caustic Calcined Magnesite


Powders are used to manufacture smelting, refractory, or moisturizing materials, as well as extensively used in the rubber industry and medicine making;

0.3mm-2mm sized products are used to increase magnesium content in the soil.

Fused Magnesia

We supply Fused Magnesia of all required sizes with MgO from 95% to 97.5%. We can produce according to our customer’s specific requirements.

Fused Magnesium Aluminum Spinel

Gunning Mix

Ramming Mass