Rui Sousa, born in Matosinhos (Porto), holds a PhD degree in Mining and Geo-Resources by the Faculty of Engineering of the University of Porto, completed in 2020. He developed his Master thesis on the Almina, Minas do Alentejo Sa mineral processing plant, where he studied the Froth Flotation of Cu/Zn Massive Sulfides. He also worked for a project between National Laboratory of Energy and Geology (LNEG) and the company Beralt Tin and Wolfram owner of Panasqueira Mine, studying the viability of fine tailings reprocessing. Then, he started his research career at CERENA – Center for Natural Resources and Environment, working in the SUSMIN project studying alternative gold leaching methods. In 2016, he joined LNEG to work in the European H2020 FAME Project, in which several mineral processing methods were applied to various reference ores. He contributed for the development of a continuous pilot plant, aiming the production of lepidolite concentrates by froth flotation applying a zero-waste strategy. During this project, he developed his PhD thesis, in the specialty of Mineral Processing, aimed to study the efficiency of mineral separations based on image analysis methodologies. Since 2017 he is also Invited Professor at Mining Department in Faculty of Engineering of the University of Porto. Currently, he is a junior researcher at CERENA, having as main priority the study of innovative and sustainable practices that can leverage the green transition of the raw materials industry.