Thanks to a vertical integration policy led by the Groupe Roullier, we can steer each stage to provide you with the most suitable magnesia for your needs, from the choice of the raw material extracted from our integrated mines.
Depending on the ore deposit, approximately 25 tons of ore must be extracted from the pit to obtain one ton of Magnesium oxide from the plant.
Magnesium oxide (MgO) is obtained through calcination of Magnesium carbonate via the following reaction:
MgCO3 calcined up to 600°C or 1100°F >> CO2 + ‘MgO called Caustic Calcined Magnesia ‘CCM’
MgO caustic calcined at more than 600°C or 1100°F >> MgO called Dead Burned Magnesia ‘DBM’
Some key dates from more than 40 years of knowledge and experience in Magnesia business within Groupe Roullier: