<正> 提高真空吹氧脱碳(VOD)与氩氧脱碳(AOD)炉镁铬耐火材料炉衬的寿命,目前仍是重要问题,我们曾对不同Cr_2O_3含量的镁铬耐火材料在炉外精炼渣中的溶蚀进行了研究,本文采用同样实
Simulative study for erosion of refractory in VOD or AOD steel refining was car-ried out by the method of rotating cylindrical magnesite-chrome specimen immersed in a synthe-tic molten slag. It was resulted that the dissolution rates of specimens with contents of sameCr_2O_3 but various Al_2O_3 are the same at the ratio Al_2O_3/MgO from 0 to 0.085% and increasesharply from 0.085 to 1.14% then smoothly over 1.14%. With the increasing of Al_2O_3 content inthe slags, the dissolution rates of specimens decrease, and their decrement meet each other at 25%Al_2O_3 in slags. The microcopic observation and EPMA were also made of the eroded specimens.
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