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a.不锈钢二步法冶炼,多使用AOD炉与初炼炉配合,可以大量使用高碳铬铁,效率高,经济可靠,投资少,可以与连铸相配合。其不足之处是风口附近耐火材料的寿命低,深脱碳有困难,钢液易于吸氢,不利于经济地生产超低碳或超低氮不锈钢。b.不锈钢三步法冶炼工艺的最大特点是使用铁水,在原料选择的灵活性、节能和工艺优化等
a. stainless steel two-step smelting, and more use of AOD furnace with the primary furnace, you can extensive use of high-carbon ferrochrome, high efficiency, economic and reliable, less investment, can be matched with the continuous casting. The disadvantage is that the refractory life near the tuyere is low, deep decarburization is difficult, the liquid steel is easy to absorb hydrogen, is not conducive to the economic production of ultra-low carbon or ultra-low nitrogen stainless steel. b. stainless steel three-step smelting process is the most prominent feature of the use of hot metal in the choice of raw material flexibility, energy saving and process optimization