Community Research and Development Information Service - CORDIS

Abstract

A system for the preparation and decoating of organic coated/galvanised scrap has been developed. Scrap preparation via a shrear shedder was found to yield an open-faced feedstock that was suitable for the subsequent wet chemical decoating stage (acidic and caustic media). A number of environmentally friendly treatment processes were examined for applicability to waste streams from the wet chemical treatment process; super critical water oxidation (SCWG), wet air oxidation (WAG) and microwave pyrolysis methods were found to be effective for treating polymeric waste streams (paint residues). Electrolysis could be an option for zinc and heavy metal recovery/removal.

At the time of writing, the environmental impact of direct charging of coated steels during steel making appears to be acceptable as current technologies adequately control organic emission levels. However, significant changes in environmental legislation could make prior decoating an effective option for steel makers. Niche markets may also be able to exploit this technology where clean scrap and/or large volumes of coated scrap have to be used (e.g. EAF steel making). .

Additional information

Authors: COSGROVE M, CORUS R & TD, Welsh Technology Centre, Port Talbot Works, Port Talbot (GB);EDMUNDSON J, CORUS R & TD, Welsh Technology Centre, Port Talbot Works, Port Talbot (GB);JACOBSEN D, Swedish Institute of Metals Research, Drottning Kristinas Vag 48 (SE);DINSDALE R, University of Glamorgan, Pontypridd Wales (GB);NUUTINEN J, Rautarukki OY/Polytec, Asentajantie 8-10 (FI);RUSSO P, IRSID, Voie Romainem (FR);TJUS K, IVL (SE);ALMEMARK M, IVL (SE)
Bibliographic Reference: EUR 19847 EN (2001), pp.149. Euro: 22.00
Availability: Available by EUR-OP Sales Agents
ISBN: ISBN: 92-894-1264-X
Record Number: 200013724 / Last updated on: 2001-09-18
Category: PUBLICATION
Original language: en
Available languages: en