Spirals observed

Kapur, P.C.; Meloy, T.P.

doi:10.1016/s0301-7516(97)00053-7

Cited by 31 publications

(19 citation statements)

References 5 publications

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“…Для усовершенствования пневмосепараторов необходимы теоретические исследования движения частиц на рабочей поверхности сепаратора [2]. В работах [3][4][5] представлены математические модели движения частицы в винтовом сепараторе. В [6] исследованы процессы сепарации в винтовом сепараторе методом дискретных элементов.…”

Section: аннотацияunclassified

Математическое Моделирование Вероятности Положения Частицы На Рабочей Поверхности Винтового Пневмосепаратора

Filippov¹,

Крылатова²,

Яковлев³

et al. 2017

Тенденции Развития Науки И Образования

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Section: аннотацияunclassified

Математическое Моделирование Вероятности Положения Частицы На Рабочей Поверхности Винтового Пневмосепаратора

Filippov¹,

Крылатова²,

Яковлев³

et al. 2017

Тенденции Развития Науки И Образования

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“…A quantidade de água perdida é considerável por causa da massa de densos coletada, e se não for reposta haverá perda de eficiência na separação. (9) …”

Section: Variáveis Operacionaisunclassified

Espirais Concentradoras No Tratamento De Minérios De Ferro: Uma Breve Revisão

Arenare¹,

Rodrigues²,

Araújo³

et al. 2009

TMM

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ResumoA aplicação de espirais concentradoras no processamento de minérios de ferro data da década de 1960 na concentração de hematita especular no Canadá. Desde então, sua aceitação tem sido ampla entre as empresas produtoras de minério de ferro. As espirais, apesar de ter um funcionamento muito simples, possui um dos mais complexos mecanismos de separação entre os métodos gravíticos. Os principais mecanismos de separação descritos na literatura são apresentados neste artigo, assim como as principais variáveis de projeto, as quais também são importantes no que diz respeito a uma melhor eficiência para o processamento de diferentes tipos de minérios, ou diferentes etapas de processo. Por fim, os principais problemas operacionais em circuitos de espirais são apresentados, com algumas sugestões de melhorias. Palavras-chave: Espiral concentradora; Minério de ferro. REVISITING SPIRAL CONCENTRATION AS APPLIED TO IRON ORE BENEFICIATION AbstractThe application of spiral concentrators in the processing of iron ores started in the 1960's for the concentration of a specular hematite ore in Canada. Since then, its acceptance has been ample among most iron ore producing companies. Spirals, although presenting very simple operating principles, have one of the most complexes separation mechanisms among all the gravity beneficiation methods. The main separation mechanisms described in literature are presented in this paper, as well as the design variables, that are of fundamental importance with respect to the achievement of a better efficiency for the processing of different types of ores or different stages in the process. The main operational problems occurring in spiral circuits are presented and some suggestions for improvements are made.

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“…Fig. 2 (Kapur and Meloy, 1998) depicts the design parameters of a typical spiral. The longitudinal tangential slope S, at any point on the deck is expressed as…”

Section: Parametric Representation Of Spiral Geometrymentioning

confidence: 99%

“…Since, its introduction by Humphreys in the 1940's (Thompson and Welker, 1990), spirals have proved to be a cost effective and an efficient means of concentrating a variety of ores. Their success is attributed to the fact that spirals are environment friendly, rugged, compact, and cost effective (Chedgy et al, 1990;Holland-Batt, 1990Kapur and Meloy, 1998). Since the 1980s, there has been an increased interest in recovering coal fines and spirals have become a common method for the concentration of 0.1 mm to 2 mm coal.…”

Section: Introductionmentioning

confidence: 99%