作者从镁砖的固有特性出发,分析了电硅热法微碳铬铁炉衬的侵蚀机理。指出在冶炼过程中炉衬遭损坏的主要原因是初渣的化学侵蚀和精炼期的高温热作用。铬矿的冶炼性能决定了初渣的化学件质,故对炉衬寿命有着重要的影响。 Based on the inherent characteristics of magnesia brick, the author analyzes the erosion mechanism of the micro-carbon chrome lining of the electrothermal silicon furnace. It is pointed out that the main reason that the lining is damaged in the smelting process is the chemical attack of the primary slag and the high temperature thermal effect during the refining. Chromium ore smelting properties determine the chemical composition of the initial slag, so the lining of life has an important impact.