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4259158 
Journal Article 
Calculation of Phase Diagram of CaO-SiO2-Al2O3-MgO-B2O3 Refining Slag without CaF2 
Liu, L; Wang, G; Wang, S; Dong, Y; Chai, Y 
2012 
Yes 
Advanced Materials Research
ISSN: 1022-6680 
Advanced Materials Research 
512-515 
1558-+ 
WOS:000312119901005 
CaF2 is used in large quantity during refining of steel, which is harmful to environment to be found. There is more and more study on use of B2O3 in metallurgical progress. This paper studied the effects of MgO on melting performance of CaO-SiO2-Al2O3 ternary system and B2O3 on that of CaO-SiO2-Al2O3-MgO quaternary system by calculation of phase diagram. The result shows that MgO can expand the range of liquid phase of CaO-SiO2-Al2O3 ternary system while the effect on melting performance is little. B2O3 can also reduce the melting point of CaO-SiO2-Al(2)O3-MgO quaternary system in high CaO zone and in high Al2O3 zone. So the proper composition of MgO in refining slag are 5 similar to 8% and B2O3 below 8%. 
Slag without CaF2; Refining; Calculation of phase diagram