Výsledky vyhledávání - "Alexandre Vale Oliveira"

Enhanced Washburn Method (EWM): A comparative study for the contact angle measurement of powders

Autor: Alexandre Vale Oliveira, Saeed Chehreh Chelgani, Laurindo de Salles Leal Filho, R. Dehghan, A. Tohry

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

Washburn Method (WM) as a typical contact angle measurement (θ) method can be used for assessment of powder wettability (especially representative particle size range for flotation separation). However, as an indirect method, WM has several limitati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ab741534f113e0ce5a16f2b8948c7b6
https://doi.org/10.1016/j.apt.2020.10.014

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The Influence of Static Pressure on Bubble Size and Contact Angle of Quartz: Mimicking What May Happen Inside a Hypothetical Flotation Column

Autor: Alexandre Vale Oliveira, José Tadeu Gouvêa Junior, Thiago Cesar Souza Pinto, Laurindo de Salles Leal Filho

Publikováno v: Minerals; Volume 13; Issue 3; Pages: 417

This paper addresses the influence of hydrostatic pressure (Phyd) on bubble diameter (db) and contact angle (θ) of quartz in pure water versus collector solution (Flotigam® EDA, γLG = 57 mN/m) at 20 °C. The pressure range (0–300 kPa) applied ag

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22fbb0e1304469ee3c37acd7e81b2bcb
https://doi.org/10.3390/min13030417

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Flotação de quartzo grosso em colunas: influência da pressão sobre dinâmica de bolhas e ângulo de contato

Autor: Alexandre Vale Oliveira

Publikováno v: Biblioteca Digital de Teses e Dissertações da USP
Universidade de São Paulo (USP)
instacron:USP

A concentração de hematita a partir de itabiritos no Quadrilátero Ferrífero (MG) tem sido conduzida há mais de 40 anos por flotação catiônica reversa de quartzo em meio básico, utilizando-se células mecânicas e também colunas. Todavia, en

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a8d3d1f52f67ca8af835245747828f7
https://doi.org/10.11606/d.3.2021.tde-30062021-143840

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