Adsorption Mechanism of Mixed Cationic/Anionic Collectors in Quartz–Hematite Flotation System

Vidyadhar, A; Kumari, Neha; Bhagat, R P

doi:10.1080/08827508.2012.723649

Cited by 32 publications

(6 citation statements)

References 18 publications

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“…Amines are widely used as collectors in the reverse cationic flotation of iron ores. Because a cationic collector carries a positively charged headgroup in water, the adsorption of the collector on a mineral surface is governed by the magnitude and sign of the surface charge of the mineral, which can be measured by a zeta potential meter or zeta probe [44,45].…”

Section: Cationic Collectorsmentioning

confidence: 99%

Collecting Agent–Mineral Interactions in the Reverse Flotation of Iron Ore: A Brief Review

et al. 2020

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Froth flotation has been widely used in upgrading iron ores. Iron ore flotation can be performed in two technical routes: direct flotation of iron oxides and reverse flotation of gangue minerals with depression of iron oxides. Nowadays, reverse flotation is the most commonly used route in iron ore flotation. This review is focused on the reverse flotation of iron ores, consisting of reverse cationic flotation and reverse anionic flotation. It covers different types of collecting agents used in reverse iron ore flotation, the surface characteristics of minerals commonly present in iron ores (e.g., iron oxides, quartz, alumina-bearing minerals, phosphorus-bearing minerals, iron-bearing carbonates, and iron-bearing silicates), and the adsorption mechanisms of the collecting agents at the mineral surface. The implications of collecting agent–mineral interactions for improving iron ore flotation are discussed.

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Section: Cationic Collectorsmentioning

confidence: 99%

Collecting Agent–Mineral Interactions in the Reverse Flotation of Iron Ore: A Brief Review

et al. 2020

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“…Os valores de resistência à flexão de ambos os espécimes são muito superiores aos relatados para porcelanas convencionais (variou entre 60 e 80 MPa). Mais ainda, o valor da micro-dureza das amostras sem calcinação a 1200 °C é de 9,3 ± 0,2 GPa que é maior do que os produtos comerciais de porcelana (5,5 GPa). Palavras-chave: porcelana, caulim, feldspato, quartzo, densidade, resistência.…”

Section: Sintering and Mechanical Properties Of Porcelains Prepared Funclassified

Sintering and mechanical properties of porcelains prepared from algerian raw materials

Kitouni

Harabi

2011

Cerâmica

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Porcelain is a type of ceramics highly valued for its beauty and strength. The overall goal of this work is to utilize local raw materials within the following fractions: 37 wt.% kaolin, 35 wt.% feldspar and 28 wt.% quartz. This composition has been selected on the basis of the ternary phase diagrams (kaolin-feldspar-quartz). The densification behaviour indicated that specimens sintered at 1200 °C for 2 h with a heating rate of 5 °C/min, have a bulk density of about 2.50 g/cm³. This value is slightly higher than that reported for the conventional porcelain products (2.45 g/cm³). Porcelain specimens with and without calcination sintered at 1200 °C for 2 h have tensile strength values of about 45 and 73 MPa, respectively (equivalent flexural strength values of about 122 and 197 MPa, respectively). The flexural strength values of both specimens are much higher than those reported for conventional porcelains (ranged between 60 and 80 MPa). Furthermore, the value of micro-hardness of the fired samples without calcination at 1200 °C is 9.3 ± 0.2 GPa which is higher than the commercial porcelain products (5.5 GPa).

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“…This value is close to similar tailings reported elsewhere (Carlson and Kawatra, 2013;Grilo et al, 2020;Mamghaderi et al, 2021). Since each mineral phase of the tailings has its ISP (ranging from 1.8 to 9.5), the ISP of 5.5 seems reasonable if the proportion among them is taken into account (Kosmulski, 2021;Lakshmipathiraj et al, 2006;Pan et al, 2004;Shrimali et al, 2016;Vidyadhar et al, 2014). Furthermore, the mineral particle surface protonates at low pH levels (below the ISP), which produces a positive zeta potential.…”

Section: Zeta Potentialsupporting

confidence: 88%

“…At this condition, the particles can easily aggregate and settle. Vidyadhar et al (2014) studied the effect of pH on synthetic colloidal suspensions of hematite and Quartz prepared in 10 -3 M KNO3 solutions. The studied pH range was 2-9, varied by…”

Section: Ph and Zeta Potentialmentioning

confidence: 99%

Novos polímeros de base natural para desaguamento de rejeitos de minério de ferro.

Zago¹

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Adsorption Mechanism of Mixed Cationic/Anionic Collectors in Quartz–Hematite Flotation System

Cited by 32 publications

References 18 publications

Collecting Agent–Mineral Interactions in the Reverse Flotation of Iron Ore: A Brief Review

Collecting Agent–Mineral Interactions in the Reverse Flotation of Iron Ore: A Brief Review

Sintering and mechanical properties of porcelains prepared from algerian raw materials

Novos polímeros de base natural para desaguamento de rejeitos de minério de ferro.

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