日本的钢铁企业正广泛推广能减少炼钢生产中铁合金消耗的新工艺。如在“新日铁”、“神户”、“川崎”等公司都掌握了铁水分阶段精炼法工艺:脱硅在高炉出铁沟或混铁罐内进行;脱磷、脱硫在混铁罐内进行;脱碳在复合吹转炉内进行。此工艺取名为ORP 工艺。在该工艺的适当阶段加入锰矿石,通常 Japanese steelmakers are widely promoting new processes that reduce the consumption of ferroalloy in steelmaking. As in the “Nippon Steel”, “Kobe”, “Kawasaki” and other companies have mastered the iron and water refining process stage: desiliconization in the blast furnace iron trenches or mixed iron tank; dephosphorization, desulfurization in the mixed iron tank ; Decarburization in the composite blowing furnace. This process is named ORP process. Manganese ore is added at the appropriate stage of the process, usually