IME Process Metallurgy and Metal Recycling

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03/04/2025

New research project at IME: Recycling of Hydride Storage and Sorption Materials for Sustainable Hydrogen Storage

26/03/2025

Dr. Srećko Stopić Honored Once Again with the Outstanding Reviewer Award

26/03/2025

Kick-Off-Meeting ProMotion

26/03/2025

Kickoff Meeting second funding period of DFG project

Last 12 Months News

Activities and Events

Meet us in Hamburg at EMC 2025 Conference 22 – 25

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IME-Presentation

Information:

IME will be there with:

11 oral presentations
2 Poster
1 Chair

Date:

22/06/2025

The World of Green Metallurgy®

The activity of the Institute IME Process Metallurgy and Metal Recycling (Professor Dr.-Ing Dr. h.c. Bernd Friedrich) consists of applied research and education/teaching in the fields of extractive metallurgy (pyrometallurgy and hydrometallurgy), metal refining and electrolysis, as well as recycling of metals and residues. IME-RWTH is also a leading institute in field of process design and optimization in terms of resources efficiencies with special focus on critical waste streams aiming to support the sustainability on Circular Economy. We are involved in production technologies of complex alloys under vacuum up to demo-scale and powder synthesis in nano-scale.

Our Team

Latest Publications [ see all ]

Year	Publications
2001	congress or congress paper Cu-Pb-Me-S-balances during lead refining In: Proceedings of European Metallurgical Conference, 18. – 21. September 2001, Friedrichshafen, S. 295 – 317 Alexander Arnold, Bernd Friedrich, F. Toubartz
2001	article in scientific journal Behaviour of copper in refining of lead by fractional crystallization Transaction of the Institut of Mining and Metallurgy, Section C, Mineral Processing and Extraactive Metallurgy 110 (2001), C1-C61, S. C60-C62 K. Qiu, Q. Chen, P. Winkler, Joachim Krüger
2001	article in scientific journal Auswahl und Bewertung von Werkstoffen zur Formgebung im teilflüssigen Zustand Giesserei, Jg. 88, Heft 8, 2001, S. 60 – 66 Tony Noll, Bernd Friedrich, H. Meuser, I. Budak
2001	article in scientific journal Elektroschlackeschmelzen von aluminothermisch hergestellten TitanAluminiumlegierungen – eine Alternative zum Kroll Prozess? Berg- und Hüttenmännischen Monatshefte (BHM), Heft 146/5, 2001, S. 203 – 209. Bernd Friedrich, Joerg Hammerschmidt
2001	congress or congress paper Alternative solution purification in the hydrometallurgical zinc production In: Proceedings of European Metallurgical Conference, 18. – 21. September 2001, Friedrichshafen, Vol. 1, S. 179 – 197 Bernd Friedrich, Graciela Mendez
2001	congress or congress paper Technical Progress in the Aluminium Industry – A Scenario Approach In: Proceedings of Light Metals 2001, TMS, Warrendale, USA, S. 1131 – 1137. Georg Rombach, P. Zapp, W. Kuckshinrichs, Bernd Friedrich
2001	congress or congress paper Resource Conservation by Improvements of Primary Aluminium Production In: Proceedings of Light Metals 2001, TMS, Warrendale, USA, S. 349 – 356 Jürgen Schlimbach, Georg Rombach, Bernd Friedrich, Joachim Krüger
2000	congress or congress paper A new Approach for the Investigation of the Fluid Flow in Ceramic Foam Filters Light Metals Bettina Hübschen, Joachim Krüger, Neil J. Keegan, Bernd Friedrich
2000	Book Chapter Aluminiumrecycling – Anspruch und technische Realisierbarkeit Hrsg.:Verband Deutscher Schmelzhütten, Düsseldorf, Aluminiumverlag und Informationsgesellschaft mbH, Düsseldorf, 2000 Bernd Friedrich, Georg Rombach
2000	article in scientific journal Nachhaltige Entwicklung – Beitrag von Stoffstrommodellen zur Operationalisierung In: Umwelt Bd. 30, Nr. 10/11 – Oktober/November 2000, S. 110-113 P. Zapp, W. Kuckshinrichs, J. Hake, Georg Rombach, Bernd Friedrich, P. Sliwka, C. Bauer, P. Martens

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Research Areas [ see all ]

Electronic Scrap Recycling

The IME pursues the objective to use the high potential of WEEE as a resource for various metals by developing a sustainable metallurgical recycling process. The focal point is the recovery of base metals (copper, aluminum), precious metals (gold, silver, platinum and palladium) as well as critical elements (gallium, germanium and indium)…

Nanopowder Synthesis

Nanotechnology belongs to the key innovative technologies for powder production. Ultrasonic spray pyrolysis USP is a versatile method for the formation of nanosized particles of metals, oxides and composites. Our work deals with nanoparticles of Ag, Cu and Au formed by ultrasonic spray pyrolysis using the horizontal and vertical reactor. ..

Circular Economy for Batteries

The IME represents the field of process metallurgy and metal recycling at RWTH Aachen University. Due to the growing public, political and industrial interest in battery recycling the IME has systematically developed optimal pyrometallurgical and hydrometallurgical recycling concepts for all standard battery systems in cooperation with industrial partners and also in terms of projects funded by the government…

Titanium Metallurgy

Titanium is called the material of the future. This title results from the unique combination of properties such as good corrosion resistance, high strength and biocompatibility with low density. Due to these properties, titanium alloys are increasingly being used in areas such as aerospace, automotive, chemical or medical technology.
Despite…

Technology Metals (Extraction and Recycling)

Critical metals are, by definition, metals that are of high economic importance and at the same time exhibit significant supply risks. Elements that are ascribed as especially critical are, for example, rare earth elements, platinum group metals, but also antimony and niobium.
At IME, pyrometallurgical as well as hydrometallurgical processes for…

Aluminum Recycling and Melt Purification

The working group focuses on the recycling of aluminium scraps via under salt or salt-free processes. Top Blown Rotary Converter (TBRC) in lab and demo-scale is used to perform the experiments. Efficient coagulation during recycling is also studied by using different salt compositions. In addition, thermal treatment of organic containing…

Waste Treatment and Primary metallurgy

The primary production of metals is usually accompanied by by-product residues. These residue streams are a potential problem due to environmental concerns. Contained in these residues are valuable metals in lower grades than the primary production source. The IME is seeking means to exploit these vast secondary resources for value…

Alloying Metallurgy

Alloying metallurgy is confronted with increasing complexity, as requirements of metallic high-tech materials rise with regard to composition, cleanliness and homogenity. In order to comply with strict tolerances, metallurgical vacuum processes are applied, which allow, for instance, melting of metals with high oxygen affinity, removal of dissolved gases or non-metallic…

Pure Metals

The rapidly growing development and progress in the semiconductor, solar panel, photovoltaic and also the catalytic industry, has recently considerably increased the production and the number of applications of high-purity metals. In order to ensure the extremely low level of impurities (ppm or even ppb range), complex and highly controlled…

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Meet us in Hamburg at EMC 2025 Conference 22 – 25

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The World of Green Metallurgy®

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