Community Research and Development Information Service - CORDIS

FP5

Development of technilogies for treatment of dust and sludges containing zinc and lead to improve their recycle and reuse

Funded under: FP5-GROWTH

Abstract

Four different technologies for dust treatment coming from EAF and BOS have been settled. Many of the problems encountered have been solved by both pyrometallurgical and hydrometallurgicallines with resulting notable environmental benefits.

British Steel carried out excellent zinc removal for achieving low levels of zinc in a highly metallised product by processing briquettes and/or pellets through a rapid thermal treatment at 1300 degrees Celsius. A zinc-rich filtrate can also be produced to be sold to the zinc manufacturing industry.

The VASL investigations carried out with a laboratory plant showed that dezincification with dusts from the LO process under conditions of short residence time and high temperature was possible, but with grain size below 125 micro metres.

CENIM, through a long cycle of pellet treatments, pointed out that it was possible to recover all the zinc contained in the EAF dusts.

CSM, starting from powders rich in ZnO and coming from an arc-plasma industrial furnace, pointed out a hydrometallurgical line on a laboratory scale, with the aim of combining a pyro-hydro process since the pyro line is already present at industrial level at Terni steelworks. lworks.

Additional information

Authors: COLETTA A, CSM, Rome (IT);CARCEDO F.G, CENIM, Madrid (ES);LINSLEY K, British Steel plc, Rotherham (UK);BURGLER T, VASL, Linz (AT);KOHL B, VASL, Linz (AT)
Bibliographic Reference: EUR 19474 EN (2001), pp.193. Euro: 28.00
Availability: Available from EUR-OP Sales Agents http://www.eur-op.eu
ISBN: ISBN: 92-894-1094-9
Record Number: 200013572 / Last updated on: 2001-07-30
Category: PUBLICATION
Original language: en
Available languages: en