Innovative recovery of valuable raw materials from ‘red mud’ Waste slags from the metallurgy industries often contain valuable materials, but in very small concentrations. This means that large areas of valuable land are used to accommodate reservoirs filled with what is sometimes toxic waste. We now want to use hydrogen to convert this waste into […]
Kinetics Study on the Hydrogen Reduction of Bauxite Residue-Calcite Sintered Pellets at Elevated Temperature Abstract: In this study, the isothermal reduction of bauxite residue-calcite sintered pellets by hydrogen at elevated temperatures and different gas flow rates was investigated. A thermogravimetric technique was applied to study the kinetics of the direct reduction by H2 at 500–1000 […]
Hydrogen workshop This hydrogen workshop was dedicated to hydrogen in metal production. Hydrogen will play a key role in the production of metal without the use of fossil carbon and thus contribute to a significant cut in the world’s CO2 emissions. Invited speakeres presented status and important challenges Four projects working on solutions, KPN Reduced […]
H2-reduction of bauxite residue and iron recovery through magnetic separation 15-17th of December it was the 17th IMPS-2022 conference in Istanbul. Ahmad Hassanzadeh presented HARARE at this International Mineral Processing Symposium with a paper on magnetic separation. The paper can be downloaded here: H2-reduction of bauxite residue and iron recovery through magnetic separation
Leuven was the place for Harare’s 18M meeting A lot of results was presented by an enthusiastic consortium at KU Leuven last week. We are adding one little result at a time to the knowledge base that will make the metal-industry sustainable. Recap of what Harare is all about: “The metallurgical industry in the EU accounts […]
The copper conference 2022 The copper conference 2022 were held in Santiago, Chile, 13.-17. November. Engineers, scientists, and copper fabricators and users from the entire world met at this conference, exchanging ideas, scientific innovation, and development. Gunnar Hovestadt from RWTH Aachen had a talk on “Hydrogen reduction of entrapped metal oxides from fayalitic copper slags”. […]
EU-Latin America Convention on Raw Materials 2022 HARARE was presented at the EU-Latin America Convention on Raw Materials 2022, 3-4 November 2022 in Santiago Chile with flyers, a poster, an oral presentation and representation of the coordinator in the forum discussion on hydrogen. There were about 120 physical participants. It was a mix of policymaker, […]
Small scale experiments: Electrodeposition of copper Meet Dimitra Spanoudaki, an electrochemist working at NTUA for the Technologies for sustainable metallurgy group! She is leading the electrochemistry research in HARARE, currently conducting experiments on the anodic dissolution of a Cu-Fe alloy produced in and the electrodeposition of Cu on the cathode in an electrolytic cell. In this post […]
Complementary approaches in characterization of secondary raw materials: a case study of H2-reduced bauxite residue This paper was published at MEI conferences, Process Mineralogy, 2-4 November, 2022, and is written by MEI conferences, Process Mineralogy, 2-4 November, 2022 Applying commonly used characterization techniques for the secondary-type materials is generally challenging because of pre-processed treatments and […]
New book chapter: Hydrogen Oxyfuel Combustion for Energy-Intensive Industries Esin Iplik from Linde is the first author of the chapter on “Hydrogen Oxyfuel Combustion for Energy-Intensive Industries” which can be downloaded for free here: Hydrogen Oxyfuel Combustion for Energy-Intensive Industries. The chapter is a part of the book: “Clean Energy Technologies – Hydrogen and Gasification […]