The Use of Scrap Substitutes Like of Cold Hot Dri and Hot Metal in Electric Steelmaking

oleh Michel Hein, Markus Abel

Penerbit - Siemens VAI Metals Technologies GmbH, Willstaett, Germany

Kategori - Novel Am

In the last decades, scrap quality got worse and scrap contamination with undesirable elements increased accordingly. Consequently the use of scrap substitutes such as Cold / Hot DRI or HBI, Hot Metal and pig iron became more and more important in electric steelmaking. Not only scrap quality, but also limited scrap availability, which increases the scrap prices worldwide, pushes the new EAF installations in the direction of high percentage melting of above mentioned substitutes in the EAF. In order to cover this market request, Siemens VAI MT developed such a flexible and high productive EAF which uses up to 40% of hot metal. As an example, we want to show the 180t EAF which is installed in the steel plant of MMK in Magnitogorsk / RUSSIA. Additionally, some technical data from the new 150t EAF in the steel plant Donetzkstal / Ukraine which is currently in the engineering phase are presented. As example for the use of up to 100% Cold and Hot DRI, the results of the new EAF at HADEED / Kingdom of Saudi-Arabia will be presented, whereas the Hot DRI is fed to the EAF directly from the DRI plant. Finally, it will be given an outlook on the future development of this trend by showing some upcoming EAF installations of Siemens VAI MT for ESISCO / Egypt and Al Atoun Steel / Kingdom of Saudi-Arabia.

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