利用副枪在转炉吹炼过程中取样、测温和对炉衬残砖的化学成分、岩相、流动温度的测定结果，研究了宝钢转炉溅渣护炉炉渣的控制及炉衬侵蚀机理。结果表明：转炉终渣ＭｇＯ含量应控制在１０ ％ 左右、溅渣层的熔损主要发生在炉温较高的吹炼后期，而镁碳砖的侵蚀是由于炉渣渗入镁碳砖的气孔和裂缝中，使其脱碳和渣化，在高温下流入渣层所致。 In this paper, the control of the slag splashing slag in Baosteel converter and the erosion mechanism of the liner were studied by sampling, measuring the temperature and measuring the chemical composition, lithofacies and flowing temperature of the residual brick in the lining during the sublance. The results show that the final slag MgO content should be controlled at about 10%. The melting loss of slag splashing layer mainly occurs in the later stage of blowing with higher furnace temperature. However, the erosion of magnesia carbon brick is due to the slag infiltration into the pores and cracks of magnesia carbon brick In the decarburization and slag, due to high temperature into the slag layer.