EP 4256096 A1 20231011 - METHOD FOR THE RECOVERY OF ALUMINIUM FROM ALUMINIUM SCRAP, AND MULTICHAMBER MELTING FURNACE
Title (en)
METHOD FOR THE RECOVERY OF ALUMINIUM FROM ALUMINIUM SCRAP, AND MULTICHAMBER MELTING FURNACE
Title (de)
VERFAHREN ZUR RÜCKGEWINNUNG VON ALUMINIUM AUS ALUMINIUMSCHROTT SOWIE MEHRKAMMER-SCHMELZOFEN
Title (fr)
PROCÉDÉ DE RÉCUPÉRATION D'ALUMINIUM À PARTIR DE DÉCHETS D'ALUMINIUM ET FOUR DE FUSION À PLUSIEURS CHAMBRES
Publication
Application
Priority
- DE 102020132240 A 20201203
- EP 2021083252 W 20211126
Abstract (en)
[origin: WO2022117466A1] The invention relates to a method for the recovery of aluminium from aluminium scrap with adhering organic deposits in a multichamber melting furnace (1), at least comprising the following method steps: - batchwise charging of the hearth (7) of the scrap chamber (2) with aluminium scrap (6), - thermal pre-treatment of the aluminium scrap (6) in a scrap chamber (2) during a first pre-treatment phase at a specified first temperature and in an atmosphere which is substantially free of oxygen in order to transform the organic deposits adhering to the aluminium scrap into a pyrolysis gas, - thermal pre-treatment of the aluminium scrap (6) in the scrap chamber (2) during a second pre-treatment phase at a specified second temperature, wherein the scrap chamber (2) is heated up to the spontaneous ignition temperature of the pyrolysis gas, wherein at least one air stream (L) is provided in the scrap chamber (2) in order to produce an ignitable sub-stoichiometric pyrolysis-gas/combustion-air mixture, which is made to react in the scrap chamber (2) in a combustion process, and - transferring the atmosphere from the scrap chamber (2) to a post-combustion process. The invention also relates to a corresponding multichamber melting furnace.
IPC 8 full level
C22B 7/00 (2006.01); C22B 21/00 (2006.01); F27B 3/04 (2006.01)
CPC (source: EP US)
C22B 1/005 (2013.01 - US); C22B 7/003 (2013.01 - EP US); C22B 21/0007 (2013.01 - US); C22B 21/0069 (2013.01 - EP); C22B 21/0092 (2013.01 - EP US); F23N 1/022 (2013.01 - US); F27B 3/045 (2013.01 - EP US); F27B 3/20 (2013.01 - EP); F27B 3/22 (2013.01 - EP); F27D 17/004 (2013.01 - EP US); F27D 19/00 (2013.01 - EP US); F27D 2017/005 (2013.01 - US); F27D 2019/0006 (2013.01 - EP); F27D 2019/0012 (2013.01 - US); Y02P 10/20 (2015.11 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022117466 A1 20220609; CA 3200561 A1 20220609; DE 102020132240 A1 20220609; EP 4256096 A1 20231011; MX 2023006409 A 20230622; US 2024011122 A1 20240111
DOCDB simple family (application)
EP 2021083252 W 20211126; CA 3200561 A 20211126; DE 102020132240 A 20201203; EP 21819852 A 20211126; MX 2023006409 A 20211126; US 202118255017 A 20211126