The Ausmelt furnace uses a top-blown submerged lance smelting process. By controlling the lance air flow, oxygen enrichment, coal ratio, and lance immersion depth, the molten bath is strongly agitated to achieve efficient smelting. The smelting temperature is typically in the range of 1150°C to 1250°C.
The furnace bottom working layer is continuously exposed to penetration and erosion by high-temperature molten materials, while the straight barrel section is affected by both chemical corrosion from slag and erosion from molten materials. Based on these operating conditions, chrome corundum bricks or magnesia-chrome bricks are recommended as refractory lining materials.
