Hydrophobic Aggregation of Galena Fine Particles

Nogueira, Francielle Câmara; Rodrigues, Otávia Martins Silva; Nogueira, Stephânia da Consolação Silva; Pereira, Carlos Alberto

doi:10.34117/bjdv6n7-849

Cited by 3 publications

(3 citation statements)

References 9 publications

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“…with the spiral concentrator, it should be noted that a concentrate having a particle size smaller than 106 µm suffered a sharp fall in the mass recovery rate (from 56.41% to 21.25%), which confirmed the negative effect of the particles rated as fine. Several authors highlight the difficulties in concentration ore fines, as cited by Subrahmanyam and Forssberg, 1990 and emphasized in research by Nogueira et al, 2020. Also, the fine particles (especially those smaller than 106 µm, which amounts to 50% of the metallic content of the feeding samples) (Figure 6), were dragged to the tailings by the water action.…”

Section: Effects Of Finesmentioning

confidence: 92%

Influence of Hematite Particle Morphology on Friable Itabirite Concentration in Humphreys Spiral Concentrator / Influência Da Morfologia Da Hematita Presente Em Itabirito Friável Na Concentração Por Espiral Concentradora Humphreys

José

Coelho

Pereira

2021

BJD

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The depletion of hematitic mineral deposits and the growing content of itabirites in the iron ores mined in the Quadrilátero Ferrífero-Brazil calls for further studies in an effort to adjust the actual technologies, due to the different behaviors of the different mineral species present in the new ore. Currently, little is known about the fundamentals of particle separation in Humphreys spiral, as far as the different particles morphologies. Therefore, the performance of a spiral concentrator was evaluated by a sequence of friable itabirite tests at an industrial scale. The smallest iron content and smaller metallurgical recovery attained in the tests owe to a small particle size in sample (33.67% < 106 µm and d80 ≈ 675 µm) and a greater content of tabular hematite. The sample showing the worst metallurgical recovery results (46.20%) and iron content (62.39%) also presented the highest percentage of tabular hematite (68.69%). The samples with a greater amount of martite produced sinter feed with the highest metallurgical recovery (65.65%). It is believed that there was a predominant effect of the hematite morphology on other parameters such as density. Thus, a careful characterization step and the adoption of blending procedures concerning iron content and morphology simultaneously can be positive for the process.

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Section: Effects Of Finesmentioning

confidence: 92%

Influence of Hematite Particle Morphology on Friable Itabirite Concentration in Humphreys Spiral Concentrator / Influência Da Morfologia Da Hematita Presente Em Itabirito Friável Na Concentração Por Espiral Concentradora Humphreys

José

Coelho

Pereira

2021

BJD

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“…Ein weiterer wichtiger Symptomkomplex, zu dessen Evidenz gerade ein systematischer Review vorgelegt wurde 32 , ist das Vorhandensein von Schmerzen bei Menschen mit Parkinson. Physiotherapeutisch bedeutend ist dabei die hohe Prävalenz von muskuloskelettalen Schmerzen, die vor allem in den Armen und Beinen angegeben werden und in den Schultern sowie im Bereich der zervikalen und lumbalen Wirbelsäule.…”

Section: Parkinson-syndromunclassified

“…Physiotherapeutisch bedeutend ist dabei die hohe Prävalenz von muskuloskelettalen Schmerzen, die vor allem in den Armen und Beinen angegeben werden und in den Schultern sowie im Bereich der zervikalen und lumbalen Wirbelsäule. Typische Parkinson-assoziierte Schmerzen sind nicht überraschend ebenfalls häufig und laut Review am zweithäufigsten vorhanden 32 – gemeint sind z. B. aus der motorischen Dysfunktion resultierende Schmerzen 33 .…”

Section: Parkinson-syndromunclassified