At present, the smelting processes for producing stainless steel in the world are mainly divided into one-step, two-step and three-step methods, as well as new integrated production methods. The one-step smelting method is: molten iron + AOD (argon oxygen refining furnace); the two-step method is: EAF (electric arc furnace) + AOD (argon oxygen refining furnace). The three-step method is: EAF (electric arc furnace) + AOD (argon oxygen refining furnace) + VOD (vacuum refining furnace). In addition to several traditional production processes, the current integrated production process, that is, the production process from molten iron directly to stainless steel, is also adopted by many companies. The production process is: RKEF (rotary kiln electric furnace) + AOD (argon oxygen refining furnace).
