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About Magnesite



Raw Magnesite  
Fused Magnesite  
Ordinary Grade Dead Burned Magnesite  
High Purity Dead Burned Magnesite  
Caustic Calcined Magnesite  
Caustic Calcined Magnesite Ball  
Synthetic Magnesia Refractories  
Monolithic Magnesia Refractories  
Magnesia-based Bricks  
Other Minerals  
Magnesite-based Chemicals  
Other Chemical Products  




Synthetic Magnesia Refractories

The synthetic magnesia refractories we now export are fused magnesia chromite, high iron and high lime synthetic magnesia, high lime and low silicon synthetic magnesia.


1. Fused Magnesia Chromite

 This product is made from sorted high quality caustic calcined magnesite powder and chromite concentrate through blending, briquetting and smelting in electric arc furnace. It featured by good rate of direct bonding, high purity, big size of crystalline, etc which is essential material for making high grade magnesia chromite bricks.



Chemical and Physical Specifications

MgO  SiO CaO  Fe2O Cr2O B.D. 
% ≥ % ≤ % ≤ % ≤ % ≥ g/cm3
DMGS15A 70 1.0 1.0 7 15 3.70 0-30
DMGS15B 70 1.5 1.5 10 15 3.70
DMGS20 40 1.0 1.0 15 20 3.80
DMGS25 36 1.0 1.0 17 25 3.90


2. High Iron and High Lime Synthetic Magnesia  


This product is made from caustic calcined magnesite and iron powder through evenly grinding, briquetting or balling, high temperature sintering in rotary kiln or shaft kiln. It featured by high density, high strength, high resistance against corrosion, good thermal resistance and volume stability. It is widely used in ramming bottom and slope of electric arc furnace. 

MTS-A is made in shaft kiln whilst MTS-B in rotary kiln.



MgO %

CaO %  Fe2O3 % SiO2 % Crushing Strength MPa Linear Change after fired at 1,600C

Serving Temperature

1,300CX3h 1,600CX3h
MTS-A ≥83 7-9 5-7 ≤1.2 ≥11 ≥26 ≤1.9 1,850
MTS-B 68-78 ≤9.0 ≤10.0 ≤2.5        


3. High Lime and Low Silicon Synthetic Magnesia

This product is made from natural high lime and low silicon magnesite through calcination, fine grinding, briquetting, high temperature sintering in shaft kiln. It featured by ceramic bonding, good density and corrosion resistance so it is good material of making finished refractory product for converter.  


MgO %

CaO %  SiO2 % Crushing Strength MPa Linear Change after fired at 1,600C Serving Temperature
1,300CX 3h 1,600CX 3h
MGS ≥70 ≥16 ≤1.0 ≥8 ≥20 ≤2 1,850

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