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Commissioning of the New Iron Plant at New Zealand Steel

This paper describes the ironmaking process recently commissioned as part of the Stage I expansion of New Zealand Steel Limited. In the 1970's a coal based direct reduction process, which was designed to make the best use of local low grade raw materials, was developed at New Zealand Steel. With the increase in tonnage for the expanded operation it has now been possible to couple this process to a continuous electric melting furnace which produces molten iron. After a vanadium recovery step this iron is fed to a KOBM oxygen steelmaking converter. The paper outlines plant start-up techniques, records commissioning experiences and reports on process performance achieved.