REWAS 2022: Developing Tomorrow’s Technical Cycles

Abstract

REWAS, a sustainability driven conference within The Minerals, Metals and Materials Society, has a long history of bringing together academia and industry to exchange and reflect on the latest technology developments available to the metals and materials community. The first edition of REWAS took place in 1999, when the conference was launched as the leading international symposium for recycling technologies, water treatment and clean technologies. 1 At that time, the abbreviation stood for REcycling and WAste Symposium, but the scope of the conference has broadened to include many aspects of environmental sustainability. Since then, REWAS established itself as a major event for cross fertilization of thoughts and efforts on waste handling, pollution management, life cycle assessment, materials availability, and recovery. In 2004 and 2008, the conference brought together diverse organizing societies across the world from academic, industrial, and governmental bodies. The 2008 edition coincided with the formation of the Materials & Society Committee of TMS, that supported and promoted resource sustainability concepts within event programming and publications. Since 2013, REWAS is held every 3 years and hosted by the TMS Annual Meeting. [2][3][4][5] . Inspired by the initial scope and strengthened by its organizers, REWAS has grown to include resource management and manufacturing efficiency, liaising these developments to the metallurgical industry in a broader societal and systemic context. [6][7][8][9] . In particular, the symposium puts an emphasis on product-centric approach and the links between product design, manufacturing and recycling within the metals industry, as well as on the development and implementation of new tools and metrics for sustainability.

Uso del amonio cuaternario en la separación de cobre y recuperación de cianuro en la extracción de metales por lixiviación

“…La pureza del oro en las pepitas, expresada como el contenido de oro en milésimas en relación con otras sustancias presentes, a menudo oscila entre 600 y 950 partes por mil. Esto significa que, en una aleación natural, el oro puede representar una proporción significativa y valiosa (Fleuriault et al, 2021).…”

“…En segundo lugar, la contaminación por cianuro, destacan las vulnerabilidades en las prácticas actuales de manejo del cianuro en la minería (Fleuriault et al, 2021). Estos eventos subrayan la necesidad crítica de mejorar las estrategias de gestión del cianuro para prevenir futuras catástrofes ambientales, fortaleciendo así la seguridad y sostenibilidad de las operaciones mineras.…”

Initial stage of titanium oxidation in Ti/CuO thermites: a molecular dynamics study using ReaxFF forcefields

“…To date, Aluminum (Al) is by far the most common fuel used in thermites because of its high oxidation enthalpy, availability and low cost. 25 Metal oxides, including MoO 3 , 26 CuO, 27,28 Bi 2 O 3 , 29 Fe 2 O 3 , 30 I 2 O 5 31 have been employed for as long as oxidizers, serving as oxygen sources for the metal oxidation. Recently, experimental studies demonstrated superior initiation characteristics of Al-based thermite using titanium fuel additive [32][33][34] thus bypassing the negative impact of the native alumina (Al 2 O 3 ) coated on aluminum particle limiting mass transport during initiation (i.e., at low temperature, ambient-400 1C).…”

“…Generally, they are explored to cut 11,12 , propel 13,14 , disassemble 15,16 , weld 17 , initiate [18][19][20] , release 21 , which actions may be operated under different environments, even in vacuum 22 , underwater 23 and in extreme environments 24 , for both civilian and military applications. To date, Aluminum (Al) is by far the most common fuel used in thermites because of its high oxidation enthalpy, availability and low cost 25 . Metal oxides, including MoO3 26 , CuO 27,28 , Bi2O3 29 , Fe2O3 30 , I2O5 31 have been employed for long as oxidizers, serving as oxygen sources for the metal oxidation.…”