由美国动力钢公司在印地安纳州巴特勒城兴建的年产 50万 t的 Redsmelt法炼铁设备已于 1 999年 5月中旬建成投产。该设备包括由美国布里科蒙工业炉公司制造的 Inmetco转底炉和德国曼内斯曼·德马格公司提供的埋弧电炉 ,生产的铁水含 S量约 0 .0 5%,含 Si高于 1 %,含 C高于 3%。 An annual output of 500,000 t Redsmelt ironmaking plant constructed by American Power Steel Company in Butler, Indiana was put into operation in mid-May 1999. The equipment includes an Inmetco rotary hearth furnace manufactured by Brigmont Industrial Furnace Company of the United States and a submerged arc furnace provided by Mannesmann Demag, Germany. The molten iron produced contains about 0.05% S and contains Si Above 1%, containing C above 3%.