Oxygen-enriched top-blowing submerged lance bath smelting technology (TSL technology)  includes  ISA  process  and Ausmelt  process,  both  of which  use vertical cylindrical metallurgical furnace. Oxygen-enriched air is blown into bath through lances positioned at furnace top to complete chemical reaction. This technology is characterized with strong adaptability to different feeds, flexible operation and high smelting intensity, etc. The TSL furnace usually operates together with settling furnace. TOMINE has designed 9 smelters using TSL technology, with concentrate throughput over 5600kt/a.

Top-blowing converting technology, invented based on top-blowing smelting technology,   also   adopts   vertical   cylindrical    metallurgical   furnace. Oxygen-enriched  air  is  blown  into  bath  through  lances  positioned  at furnace top to enable reaction of matte and production of blister. This technology  is  featured  with  large  converting  intensity,  high  oxygen enrichment, small offgas volume and small footprint, etc. The company  has designed 2 smelters using top-blowing continuous converting technology.