Nicole Seifert
Personnel Affairs
Phone: +49 351 260 2083
Fax: +49 351 260 12083

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For any questions, do not hesitate to ask:
Mr. Jose Ricardo da Assuncao Godinho Tel.: +49 351 260 4475,
Prof. Jens Gutzmer Tel.: +49 351 260 4400,
Dr. Sandra Birtel Tel.: +49 351 260 4408

Place of work:

Working hours:
19,5 h/week

30 March 2019

Online application
English / German
Job-Id: 28/2019 (799)

The HZDR is committed to equal opportunity employment and we strongly encourage applications from qualified female candidates. We also carefully consider all applications from job candidates with severe disabilities.

Bautzner Landstraße 400
01328 Dresden

PhD Student (m/f/d) in situ X-ray imaging of mineral dissolution from ores in deep eutectic solvents

A member of the Helmholtz Association of German Research Centers, the HZDR employs about 1,100 people. The Center's focus is on interdisciplinary research in the areas energy, health, and matter.

The Helmholtz Institute Freiberg for Resource Technology (HIF) pursues the objective of developing innovative technologies for the economy so that mineral and metalliferous raw materials can be made available and used more efficiently and recycled in an environmentally friendly manner.

As part of the HIF, the Department of Processing, invites applications as PhD Student (m/f/d) in situ X-ray imaging of mineral dissolution from ores in deep eutectic solvents.

The position will be occupied as soon as possible, provided that funding is approved. The employment contract is limited to three years. The PhD Student (m/f/d) will be registered as a postgraduate student at the Technical University Bergakademie Freiberg. The place of work is the Helmholtz Institute Freiberg for Resource Technology (HIF).

The position is integrated in an international consortium of partners from research and industry. In collaboration with project partners, the student (m/f/d) will study the dissolution behaviour of minerals in deep eutectic solvents (DES) in order to improve the understanding of ionometallurgical dissolution processes. A unique experimental cell to be mounted in a computed micro-tomography (CT) scanner will be developed and used to study 3D changes in the solid phase over time during leaching experiments. In doing so, the volume loss of minerals can be directly imaged, enabling the direct quantification of leaching rates as a function of time, reactive surface area and mineral association and distribution. The knowledge from this project will be fed into leaching models and used to implement a pilot-scale ionometallurgical leaching process.


  • develop an in situ cell to study mineral dissolution in DES
  • perform in situ 3D leaching experiments using CT
  • analyse 3D images to measure leaching rates as a function of time and spatial distribution
  • compare 3D results with other methods, e.g. 2D SEM based imaging and automated mineralogical methods as well as fluid chemical analysis
  • present results at conferences and in peer-reviewed journals


  • Master degree (or equivalent) in mineralogy, earth and environmental sciences, or material sciences and chemistry with experience in electrochemistry with very good marks
  • demonstrated experimental work in mineral characterization and/or in electrochemistry and/or in working with DES
  • experience with 3D image analysis techniques / software is of advantage
  • well-developed social skills directed towards working in an interdisciplinary team
  • excellent communication skills in English (verbally and written)
  • strong motivation to succeed in multidisciplinary scientific research

We offer:

  • high scientific professional networking as well as scientific excellence
  • internationality and diversity
  • interesting and diverse tasks, flexible working hours, salary based on the collective agreement TVöD-Bund
  • equality of opportunity and family-friendly structures, corporate health management
  • attractive work and research terms in a highly motivated team

Kindly submit your completed application (two page CV including name and contact of 2 potential referees, certificates and motivation letter (max. 2000 characters) by 30 March 2019 only via Online application (English / German).