Abstract:The heat transfer and mass transfer process in the molten pool of Ausmelt furnace is completed rapidly by injecting wind,oxygen and natural gas into the molten pool slag layer by gun-spraying 200-300mm to agitate the molten pool. The three core controlparameters are molten pool temperature, matte grade and furnace slag type. During the smelting process in the molten pool of Ausmeltfurnace, due to the raw material fluctuation, the drop of furnace boiler flue coke and spray gun fell-off etc., we had some problems,such as fast temperature decrease of molten pool, no in-time heat-up operation, a massive crust on molten pool surface-"dead furnace"phenomenon. Combining with the actual production, the main causes for the problems are analyzed, and the processing methods andpreventive measures are proposed for providing reference for the molten pool operation of Ausmelt furnace.