Dead Burned Magnesia

Dead burned magnesia (DBM) is main raw material for basic refractory products and it is widely used for production of shaped and unshaped refractories. Kümaş has three rotary kilns for DBM production with capacity of 300.000 tonnes per year.

Kümaş has its own magnesite reserves with high purity cryptocrystalline structure. Beneficiated magnesite ores are fed prior to firing in rotary kilns at temperature between 1750°C - 2100°C and final DBM qualities have high bulk density and periclase crystal size.

                                                                             

                                                                              

Different grain sizes are available up to requests.

 

 

Kümaş DBM Grades

  Chemical Analysis ( Weight %) Bulk Density      (gr/cm3)* Grain Size LOI
Kaliteler MgO

SiO2

CaO Fe2O3 Al2O3
KM S.EXTRA 96,80 0,80 1,80 0,50 0,10 3,42 0-15 0,10
KM EXTRA 96,50 1,00 1,80 0,60 0,10 3,41 0-15 0,10
KM SPECIAL 96,00 1,20 2,00 0,70 0,10 3,40 0-15 0,10
KM 1A 95,50 1,50 2,10 0,80 0,10 3,39 0-15 0,10
KM 1B 95,00 1,80 2,20 0,90 0,10 3,39 0-15 0,10
KM 2A 94,50 2,00 2,30 1,00 0,20 3,38 0-15 0,10
KM 2B 94,00 2,50 2,30 1,00 0,20 3,36 0-15 0,10
KM 3AB 92,50 3,50 2,50 1,30 0,20 3,32 0-15 0,10
KM 4A 92,00 4,00 2,50 1,30 0,20 3,30 0-15 0,10
KM 4B 91,00 4,50 2,80 1,50 0,20 3,30 0-15 0,10
KM 5AB 90,50 5,00 3,00 1,80 0,20 3,30 0-15 0,10
KM 6S 88,50 6,00 3,20 2,50 0,30 3,25 0-15 0,10
Special Grades
KM 1A RR 95,50 2,50 1,25 0,25 0,10 3,38 0-15 0,10
KM 4B D 91,00 4,50 2,80 1,50 0,20 3,20 0-15 0,10
Low Iron Content Grades
KM EXTRA LI 96,80 1,00 1,80 0,30 0,10 3,41 0-15 0,10
KM 3AB LI 93,30 3,50 2,50 0,50 0,20 3,32 0-15 0,10
KM 5AB LI 90,00 6,00 3,00 0,70 0,20 3,25 0-15 0,10
High Calcia-Containing Grades
KM 4 OHF 83,00 5,00 8,00 4,00 0,00 3,30 0-15 0,10
DOLOMAG 77,00 1,50 17,00 4,40 0,10 3,30 0-15 0,10
Fine Grains Magnesia Qualities
KM 4AB 0-1MM 91,00 4,50 2,80 1,50 0,20 3,30 0-1 0,10

*ASTM C357 (8-4 mesh) test method is used for Bulk Density measurement 



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