Investigations into innovative and sustainable processes for the carbothermic production of gaseous aluminum

Efhtymios Balomenos, Panagiotis Diamantopoulos, Dimitrios Gerogiorgis, Dimitrios Panias, Ioannis Paspaliaris, Christoph Kemper, Lars Peters, Bernd Friedrich, Irina Vishnevetsky, Michael Epstein, Martin Halmann, Andreas Haselbacher, Zoran Jovanovic, Aldo Steinfeld

Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)peer-review

Abstract

Considerable efforts have been applied to produce aluminum by alternative ways. Two novel processes for the carbothermic reduction of alumina towards gaseous aluminum production in Electric Arc Furnace (EAF) and solar furnace have been
investigated both theoretically and experimentally. The EAF process was tested at ambient pressures and temperatures above 2500°C in a customized 25 KW hollow electrode EAF, while the vacuum process was preliminary tested at 0.03-2.6 mbar absolute CO partial pressure and temperatures of 1400-1850°C in an
induction furnace. Results of both processes confirmed that the full reaction and volatilization of alumina to produce metallic aluminum in the vapor condensers can be achieved only at proper matching of temperatures and pressures at reaction and condensation zones. The solar reactor concept was further explored in a concentrated solar radiation furnace on a 10 kW scale.
Original languageEnglish
Title of host publicationTMS Light Metals
EditorsJohn Grandfield
PublisherMinerals, Metals and Materials Society
Pages771-776
Number of pages6
ISBN (Print)9781118889084
DOIs
Publication statusPublished - 1 Apr 2014
EventLight Metals 2014 - TMS 2014 Annual Meeting and Exhibition - San Diego, CA, United Kingdom
Duration: 16 Feb 201420 Feb 2014

Publication series

NameLIGHT METALS
PublisherTMS
ISSN (Print)0147-0809

Conference

ConferenceLight Metals 2014 - TMS 2014 Annual Meeting and Exhibition
Country/TerritoryUnited Kingdom
CitySan Diego, CA
Period16/02/1420/02/14

Keywords

  • Carbothermic reduction of alumina
  • Gaseous A1 production
  • Solar furnace
  • Vacuum carbothermic reduction

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