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| DISCUSSION ON OFF-FURNACE STEEL REFINING SLAG ATTACK UPON MgO-CaO REFRACTORIES FROM ASPECT OF CaO-SiO_2-Al_2O_3-MgO QUARTERNARY PHASE DIAGRAM |
| CHEN Zhaoyou (Luoyang Institute of Refractory Research; Ministry of Metallurgical Industry) |
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Cite this article:
CHEN Zhaoyou (Luoyang Institute of Refractory Research; Ministry of Metallurgical Industry). DISCUSSION ON OFF-FURNACE STEEL REFINING SLAG ATTACK UPON MgO-CaO REFRACTORIES FROM ASPECT OF CaO-SiO_2-Al_2O_3-MgO QUARTERNARY PHASE DIAGRAM. Acta Metall Sin, 1983, 19(6): 79-85.
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Abstract From the aspect of the phase diagram, the slags of the off-furnace steel refinement may be substantially considered similar in nature of a CaO-SiO_2-Al_2O_3-MgO quarternary system. The liquid zone and the saturation surface at 1600℃ of this system and the MgO solubility line at 1600℃ in CaO-SiO_2-Al_2O_3 slags as well as the quantity of liquid formed in different compositions of MgO-CaO system refractories after absorbed a certain amount of SiO_2 and Al_2O_3 at 1700℃ have been constructed by the allied ternary phase diagrams and the published data. Based upon above-mentioned, the off-furnace steel refining slags attack upon the MgO-CaO system refractories was discussed. Suggestion may be made of the improvements upon the service life of the linings either by controlling the composition of slags or by selecting properly the constituents of MgO-CaO refractories.
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Received: 18 June 1983
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