Abstract
Liquidus temperature, electrical conductivity and phase composition of Al2O3-CaO-SiO2-CaF2-MgO slag system were studied. The results showed that the liquidus temperature of the slag decreased with increasing MgO content, and its electrical conductivity increased with increasing MgO content and temperature. When the content of MgO is 5 %, the main phase compositions of the slag are composed of MgAl2O4, Ca2SiO2F2, CaAl4O7 and Ca5Al6O14. When the content of MgO is 7 %, the main phase compositions of Al2O3-CaO-SiO2-CaF2-MgO are composed of MgAl2O4, Ca4Si2O7F2, CaAl4O7 and Ca5Al6O14.And the content of MgAl2O4 and Mg2SiO4 increased with increasing MgO.
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