scholarly journals A natural laboratory for critical metals investigations in the Mourne Mountains granites

Unearthed ◽  
2016 ◽  
pp. 119-128
Author(s):  
Kathryn Moore ◽  
Norman Moles ◽  
Paul Lusty
Keyword(s):  
Critical Metals ◽  
Natural Laboratory

scholarly journals Biogeochemistry of Critical Metals and the Flinders Ranges Natural Laboratory

2020 ◽  
Author(s):  
Joël Brugger ◽  
Frank Reith ◽  
Santonu Kumar Sanyal ◽  
Jeremiah Shuster ◽  
Barbara Etschmann
Keyword(s):  
Critical Metals ◽  
Flinders Ranges ◽  
Natural Laboratory

Determining Ground Truth" in the New Jersey STRATAFORM Natural Laboratory"

1999 ◽  
Author(s):  
Jr Austin ◽  
Fulthorpe James A. ◽  
Olson Craig S. ◽  
Hilary
Keyword(s):  
New Jersey ◽  
Ground Truth ◽  
Natural Laboratory

Ultra-fast leaching of critical metals from spent lithium-ion batteries cathode materials achieved by the synergy-coordination mechanism

2021 ◽  
Vol 420 ◽  
pp. 129593
Author(s):  
Lei Xing ◽  
Jieru Bao ◽  
Shiyu Zhou ◽  
Yulong Qiu ◽  
Hongji Sun ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Lithium Ion ◽  
Coordination Mechanism ◽  
Critical Metals

scholarly journals Recovery of Platinum from a Spent Automotive Catalyst through Chloride Leaching and Solvent Extraction

Recycling ◽  
2021 ◽  
Vol 6 (2) ◽  
pp. 27
Author(s):  
Ana Méndez ◽  
Carlos A. Nogueira ◽  
Ana Paula Paiva
Keyword(s):  
Solvent Extraction ◽  
Environmental Sustainability ◽  
Catalytic Converter ◽  
Reaction Times ◽  
Model Solution ◽  
Critical Metals ◽  
Experimental Conditions ◽  
Chloride Leaching ◽  
Good Potential ◽  
Hydrometallurgical Treatment

Considering economics and environmental sustainability, recycling of critical metals from end-of-life devices should be a priority. In this work the hydrometallurgical treatment of a spent automotive catalytic converter (SACC) using HCl with CaCl2 as a leaching medium, and solvent extraction (SX) with a thiodiglycolamide derivative, is reported. The aim was to develop a leaching scheme allowing high Pt recoveries and minimizing Al dissolution, facilitating the application of SX. The replacement of part of HCl by CaCl2 in the leaching step is viable, without compromising Pt recovery (in the range 75–85%), as found for the mixture 2 M CaCl2 + 8 M HCl when compared to 11.6 M HCl. All leaching media showed good potential to recover Ce, particularly for higher reaction times and temperatures. Regarding SX, results achieved with a model solution were promising, but SX for Pt separation from the real SACC solution did not work as expected. For the adopted experimental conditions, the tested thiodiglycolamide derivative in toluene revealed a very good loading performance for both Pt and Fe, but Fe removal and Pt stripping from the organic phases after contact with the SACC solution were not successfully accomplished. Hence, the reutilization of the organic solvent needs improvement.

scholarly journals Evaluating critical metals contained in spintronic memory with a particular focus on Pt substitution for improved sustainability

2021 ◽  
Vol 28 ◽  
pp. e00270
Author(s):  
A. Palomino ◽  
J. Marty ◽  
S. Auffret ◽  
I. Joumard ◽  
R.C. Sousa ◽  
...  
Keyword(s):  
Critical Metals

scholarly journals Editorial for Special Issue “Critical Metals in Hydrothermal Ores: Resources, Recovery, and Challenges”

Minerals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 299
Author(s):  
Lingli Zhou ◽  
Hongrui Fan ◽  
Thomas Ulrich
Keyword(s):  
Technological Innovations ◽  
Special Issue ◽  
Critical Metals ◽  
Continuous Growth ◽  
Global Population

The consumption of resources has rapidly increased over the last few decades, driven by the continuous growth of the global population and technological innovations [...]

scholarly journals Complex Concentrated Alloys for Substitution of Critical Raw Materials in Applications for Extreme Conditions

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1197
Author(s):  
Dumitru Mitrica ◽  
Ioana Cristina Badea ◽  
Beatrice Adriana Serban ◽  
Mihai Tudor Olaru ◽  
Denisa Vonica ◽  
...  
Keyword(s):  
Raw Materials ◽  
Extreme Environment ◽  
Extreme Conditions ◽  
The European Union ◽  
Critical Metals ◽  
Research Directions ◽  
Level Of Involvement ◽  
General Evaluation ◽  
Critical Metal ◽  
Critical Raw Materials

The paper is proposing a mini-review on the capability of the new complex concentrated alloys (CCAs) to substitute or reduce the use of critical raw materials in applications for extreme conditions. Aspects regarding the regulations and expectations formulated by the European Union in the most recent reports on the critical raw materials were presented concisely. A general evaluation was performed on the CCAs concept and the research directions. The advantages of using critical metals for particular applications were presented to acknowledge the difficulty in the substitution of such elements with other materials. In order to establish the level of involvement of CCAs in the reduction of critical metal in extreme environment applications, a presentation was made of the previous achievements in the field and the potential for the reduction of critical metal content through the use of multi-component compositions.

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