The smelting technology of bottom-blowing furnace has the characteristics of a wide range of raw materials and a high recovery rate of precious metals. The damage of the furnace lining bricks is mainly caused by slag erosion, smoke erosion, and local spalling caused by temperature fluctuations. The oxygen lance area suffers from the high pressure oxygen blowing temperature during the operation. Due to the large fluctuation and strong melt agitation, the oxygen lance zone bricks also need to withstand the strong erosion of the high-temperature melt.