Results 11 to 20 of about 378,762 (347)

Moisture Determination for Fine-Sized Copper Ore by Computer Vision and Thermovision Methods

open access: yesSensors, 2023
The moisture of bulk material has a significant impact on the energetic efficiency of dry grinding, resultant particle size distribution and particle shape, and conditions of powder transport.
Dariusz Buchczik   +3 more
doaj   +1 more source

Effects of structure characteristics and fluid on the effective thermal conductivity of sintered copper foam

open access: yesResults in Physics, 2020
Heat exchangers with excellent heat transfer performance are highly demanded as the development of the powerful chips and integrated circuit. Due to the large surface area and good thermal conductivity, porous metal has become a potential candidate ...
Xianke Lu   +3 more
doaj   +1 more source

Evaluation of copper tailings from the abandoned Messina Mine for possible reuse in recreational projects, South Africa

open access: yesJournal of Degraded and Mining Lands Management, 2022
Historic mining of copper around Musina Town left behind a sizeable unrehabilitated tailing dump. This article reports on the study conducted to investigate the suitability of using copper tailings as sand replacement in recreational projects.
Sphiwe Emmanuel Mhlongo   +3 more
doaj   +1 more source

High resolution powder blast micromachining [PDF]

open access: yes, 2000
Powder blasting, or Abrasive Jet Machining (AJM), is a technique in which a particle jet is directed towards a target for mechanical material removal. It is a fast, cheap and accurate directional etch technique for brittle materials like glass, silicon ...
Berenschot, J.W.   +3 more
core   +6 more sources

Thermoelectric measurements of energy deposition during shock-wave consolidation of metal powders of several sizes [PDF]

open access: yes, 1993
The degree of shock energy localization within individual particles and between neighboring particles of different size was explored during shock-wave consolidation of spherical metal powders.
Mutz, Andrew H., Vreeland, Thad, Jr.
core   +1 more source

Nanocomposites of metallic copper and spinel ferrite films: Growth and self-assembly of copper particles [PDF]

open access: yes, 2005
Nanocomposites of metallic copper and iron oxides films have been prepared by RF-sputtering of pure CuFeO2 delafossite target. The films are made of copper and spinel ferrite crystallites of less than 10 nm in diameter. The content of metallic copper and
Barnabé, Antoine   +5 more
core   +3 more sources

The apparent density as a function of the specific surface of copper powder and the shape of the particle size distribution curve [PDF]

open access: yesJournal of the Serbian Chemical Society, 2003
The relation between the specific surface and apparent density of copper powders electrodeposited from acid copper sulfate solutions is established. It is shown that the apparent density is inversely proportional to the specific surface of copper powder.
Popov Konstantin I.   +2 more
doaj   +3 more sources

Copper Nanoparticles Prepared fromOxalic Precursors [PDF]

open access: yes, 2011
The synthesis of nanoparticles of copper metal via a soft chemistry route is presented in this paper. The method is based on the thermal decomposition under nitrogen or hydrogen of oxalic precursors with a well-controlled morphology and particle size ...
Baco-Carles, Valérie   +2 more
core   +4 more sources

Optimización de parámetros para la extracción de elementos desde minerales en medios ácido [PDF]

open access: yes, 2020
[SPA] Esta tesis doctoral se presenta bajo la modalidad de compendio de publicaciones. Actualmente, la gran minería del cobre chilena se encuentra frente a nuevos problemas y desafíos a superar.
Toro Villarroel, Norman Rodrigo
core   +2 more sources

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