Technical conditions of dolomite

Since dolomite powder contains impurities such as mica, quartz, talc, clay and iron-containing minerals, SiO2, Al2O3 and Fe2O3 are inevitable in dolomite, and the price of dolomite sand sometimes also contains Mn3O4. The above impurity oxides are all fusible components, and a small amount of them can sinter dolomite and have the hydration ability of dolomite sand. However, the presence of impurities has an obvious effect on the performance of dolomite refractories. Dolomite is decomposed into and MgO at high temperature, and they can be combined with

The use of dolomite powder

Dolomite sand 0-10 mesh manufacturers

Al2O3, Fe2O3, SiO2, etc. form a series of minerals: ferric aluminate tetra (AF, melting point 1415 ℃), ferric acid bis (C2F, 1436 ℃ decomposition), aluminate three (C3A, 1545 ℃ decomposition) and silicate bis (C2S) , melting point 213 ℃) and silicic acid three (C3S, 19 ℃ decomposition). Dolomite sand prices AF, C2F and C3A affect the high temperature performance of dolomite products and reduce the corrosion resistance of slag, so the content of Al2O3 and Fe2O3 in dolomite is limited. Although SiO2 in dolomite can form high melting point mineral C3S, the content of SiO2 should also be limited, because if SiO2 is excessive, the amount of SiO2 at high temperature will not form C3S and form a part of C2S, during cooling, C2S undergoes crystal transformation and volume expansion, which makes the material pulverized.