Community Research and Development Information Service - CORDIS

Abstract

Final report on Contract No 7210-PR/040, 1 July 1997 to 31 December 2000.

The main goals of the project are the definition of the operating conditions and the means requested to control the decarburisation and the stirring efficiency in the EAF. For this study pilot trials and industrial tests were performed.

IRSID, through trials on the industrial furnace of Unimetal Gandrange, has defined a new process and a new calculation of the carbon quantity to be loaded into the EAF. Low carbon contents (<0.06 %) have been achieved with great difficulties explained by the evolution of the oxygen yield on carbon, manganese and chromium removal.

Sidenor, through trials on the EAF of Vitoria, has designed four oxidation profiles. The conventional oxidation profile was the most economical one. An assessment of the use of oxidised materials (scale, iron ore and mixture of pig iron and iron ore) as EAF charge has shown only the scale could offer a profitable practice.

CRM has proven the possibility to measure the bath height in an EAF by gas injection. The daily application of the technique would nevertheless require further development of a special plug dedicated to the measurement.

Corus has successfully applied XRF technology at three EAF sites to monitor the amount and analysis of waste gas fumes. The results show the influence of the constitution of the cold charge materials, the method for injecting oxygen, the flux additions practice and method and capability for slag foaming. Further work is required to confirm these last results.

Additional information

Authors: DEZ A, IRSID, Maizières-lès-Metz (FR);LARAUDOGOITIA J, Sidenor, Basauri (ES);NYSSEN P, CRM, Liège (BE);RIDGEWAY K, Corus UK Ltd, Middlesborough (GB)
Bibliographic Reference: EUR 20173 EN (2002), pp.179. Euro: 26.50
Availability: EUR-OP reference: KI-NA-20173-EN-S Available from EUR-OP sales agents. URL: http://eur-op.eu
ISBN: ISBN: 92-894-3163-6
Record Number: 200214867 / Last updated on: 2002-06-26
Category: PUBLICATION
Original language: en
Available languages: en