Refractory materials include brick can be divided into five types according to the composition of components: silicon aluminum products, magnesium, magnesium, chromium products series products of magnesium and calcium, magnesium and silicon products products. 
In this five kinds of refractory products in four kinds of magnesium, therefore, it’s necessary we understand characteristics of magnesium products in refractory materials.
In this five kinds of refractory products in four kinds of magnesium, therefore, it’s necessary we understand characteristics of magnesium products in refractory materials.
1. Magnesium chromium series products: the main components of chromium series magnesium is MgO, Cr2O3, periclase for the first phase, magnesia chrome spinel for the second phase, belong to this series of products with magnesia chrome brick and magnesia chromite brick;
2. Mg Al series products: is the main component of MgO, Al2O3, because they MgO.Al2O3, mg Al series products contain magnesium material;
3. Magnesium calcium series products: the main ingredient is MgO, CaO. They have a high melting point, is an important magnesia material;
4. Magnesium silicon series products: the main components of magnesia line is SiO2, when C/S < 5, SiO2 and MgO to generate MgO.Al2O3 (olivine), from the micro mineral angle, the main products of pure aluminum series of magnesia refractory brick, periclase spinel brick, corundum spinel brick, amorphous aluminum spinel castable material of magnesium also belongs to.
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