Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Matias JE"'
Publikováno v:
Polymers, Vol 15, Iss 19, p 3861 (2023)
This study investigated the interaction of monovalent cations with different sizes on quartz surfaces and the rheological impact that this causes in concentrated suspensions when subjected to the action of a rheological modifier, in this case, sodium
Externí odkaz:
https://doaj.org/article/310966f03a8a46909f56ee70c3af3fa7
Autor:
Manuel Saldaña, Matías Jeldres, Felipe M. Galleguillos Madrid, Sandra Gallegos, Iván Salazar, Pedro Robles, Norman Toro
Publikováno v:
Materials, Vol 16, Iss 10, p 3812 (2023)
The leaching of minerals is one of the main unit operations in the metal dissolution process, and in turn it is a process that generates fewer environmental liabilities compared to pyrometallurgical processes. As an alternative to conventional leachi
Externí odkaz:
https://doaj.org/article/09b231f2168a457dbc225c936f214646
Autor:
Matías Jensen, Cristóbal Yañez, Javiera Rojas, Verónica López, Luis González, Carolina Urbina, Madeleine San Juan, Ana María Squicciarini, Paola Sánchez
Publikováno v:
Frontiers in Education, Vol 7 (2022)
Even though research has established the prevalence and predicting factors of cybervictimization in the school context, studies have not considered their nested nature, which might lead to differences within and between schools. Research has only jus
Externí odkaz:
https://doaj.org/article/66e891b89b014eddbd94a0549d53ed5b
Publikováno v:
Journal of Materials Research and Technology, Vol 9, Iss 1, Pp 798-805 (2020)
Chalcopyrite is the most abundant copper ore and, consequently, the most utilised to produce metallic copper. The main route of treatment is through pyrometallurgical processes, but these emit significant quantities of SO2 into the atmosphere (e.g. 1
Externí odkaz:
https://doaj.org/article/8632bf0f2b7640a28c1f2e566021b8f7
Autor:
Kevin Pérez, Norman Toro, Matías Jeldres, Edelmira Gálvez, Pedro Robles, Omar Alvarado, Pedro G. Toledo, Ricardo I. Jeldres
Publikováno v:
Polymers, Vol 14, Iss 7, p 1381 (2022)
The resistance of kaolin aggregates to shearing in water clarification and recovery operations is a critical input in designing thickener feed wells. A recently formulated but already available criterion is used to determine the shear strength of flo
Externí odkaz:
https://doaj.org/article/d09d3a3e751844f3a1441519569ff584
Autor:
Catalina Soto, Norman Toro, Sandra Gallegos, Edelmira Gálvez, Aurora Robledo-Cabrera, Ricardo I. Jeldres, Matías Jeldres, Pedro Robles, Alejandro López-Valdivieso
Publikováno v:
Materials, Vol 15, Iss 3, p 1136 (2022)
Current challenges in froth flotation are the presence of complex gangues and the use of low-quality waters, such as seawater. In this scenario, the recovery of molybdenum minerals is difficult, mainly due to the hydrophobic faces’ physicochemical
Externí odkaz:
https://doaj.org/article/8923c1a0019f48da8bb93118b128ebc8
Autor:
Matías Jeldres, Norman Toro, Sandra Gallegos, Pedro Robles, Iván Salazar, Phillip D. Fawell, Ricardo I. Jeldres
Publikováno v:
Polymers, Vol 14, Iss 2, p 339 (2022)
In areas where access to water for mineral processing is limited, the direct use of seawater in processing has been considered as an alternative to the expense of its desalination. However, efficient flotation of copper sulfides from non-valuable pha
Externí odkaz:
https://doaj.org/article/0dab3687fb254884a5e44074af79345b
Autor:
Francisco Pulgar, Luis Ayala, Matías Jeldres, Pedro Robles, Pedro G. Toledo, Iván Salazar, Ricardo I. Jeldres
Publikováno v:
Polymers, Vol 13, Iss 23, p 4108 (2021)
Seawater treated with lime and sodium carbonate in different proportions to reduce magnesium and calcium contents is used in flocculation and sedimentation tests of artificial quartz and kaolin tailings. Solid complexes were separated from water by v
Externí odkaz:
https://doaj.org/article/272356b51c054d78947d5f1c63a9af69
Akademický článek
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Autor:
Matías Jeldres, Luis Ayala, Pedro Robles, Edelmira Gálvez, Williams H. Leiva, Pedro G. Toledo, Ricardo I. Jeldres
Publikováno v:
Minerals, Vol 11, Iss 7, p 713 (2021)
A simple criterion is proposed to quantitatively estimate the resistance of aggregates based on incremental mechanical shear disturbances. Aggregate strength can be affected by the hydrodynamic conditions under which flocculation occurs; therefore, a
Externí odkaz:
https://doaj.org/article/70a86617817a420ca72d19242a7c9a94