selectivity in column flotation froths

Selectivity in column flotation froths - ScienceDirect

1988-7-1  Selectivity in the froth zone of two industrial flotation columns in a Mo-cleaning circuit has been studied and modelled. Froth depth is shown to be a significant factor. Froths deeper than 1 m gave selective recovery of Mo, with upgrading of 10–15% absolute. Froths less than 50 cm showed no selectivity.

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Selective detachment process in column flotation froth

Selectivity in the froth zone of two industrial flotation columns in a Mo-cleaning circuit has been studied and modelled. Froth depth is shown to be a significant factor. Froths deeper than 1 m ...

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Evaluation of the selective detachment process in ...

The improved selectivity between particles of varying degrees of hydrophobicity in flotation froths has been well documented in literature, especially in the deep froths utilized in flotation columns.

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The froth stability column: linking froth stability and ...

2005-3-1  The froth stability column is based on the dynamic stability test for non-overflowing froth columns, originally proposed by Bikerman (1973). Measurements are carried out using a vertical column, which is inserted through the froth to below the pulp–froth interface in the flotation cell, adequately low to avoid froth leakage from the bottom.

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(PDF) Column flotation of very fine particles

Compared with a conventional flotation column ... Froths deeper than 1 m gave selective recovery of Mo, with upgrading of 10–15% absolute. Froths less than

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Froth zone modelling of an industrial flotation column ...

1998-5-1  In this paper an experimental study of the froth zone behaviour in an industrial flotation column, is presented. The column is rectangular, 2×8 m 2 in cross-section and 14m height, and is part of the second copper cleaner circuit of the Colon concentrator at El Teniente, Codelco-Chile. The column produces 30 tph of 32% copper concentrate.

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Froth zone characterization of an industrial flotation ...

2009-2-1  Selectivity in column flotation froths. International Journal of Mineral Processing, 23 (1988), pp. 279-292. Article Download PDF View Record in Scopus Google Scholar. Yianatos et al., 1998. J. Yianatos, L. Bergh, G. Cortes. Froth zone modelling of an industrial flotation column.

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Froth Flotation - Metallurgist Mineral Processing

2016-12-19  Froth height can also be a problem with heavily-mineralized froths but the use of wash water addition as is done in Column Flotation can overcome this problem. Poly-glycols The poly-glycol ethers are very strong frothers completely miscible in water and capable of providing tough, compact, long-lasting froths.

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THE USE OF COLUMN FLOTATION FOR THE RECOVERY

2014-7-16  Column flotation devices were re-introduced for mineral processing in the late-1960’s in Canada by Boutin and Wheeler (1967) at which time wash water addition to the froth was used to eliminate entrainment of hydrophilic materials to the float product. By the late-1980’s column flotation had became a proven industrial

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A STUDY OF THE EFFECT OF OPERATING PARAMETERS

2016-5-17  Flotation is used for fine coal beneficiation, where operating parameters must be optimised for individual coal (Kaylani et al., 2005). A flotation column is used in the cleaning stages of flotation circuits due to a better selectivity in relation to conventional mechanical flotation cells. The design of flotation column was patented

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Selective Detachment Process in Column Flotation Froth

The selectivity in flotation columns involving the separation of particles of varying degrees of floatability is based on differential flotation rates in the collection zone, reflux action between the froth and collection zones, and differential detachment rates in the froth zone. Using well known theoretical models describing the separation process and experimental data, froth zone and ...

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(PDF) Column flotation of very fine particles

Compared with a conventional flotation column ... Froths deeper than 1 m gave selective recovery of Mo, with upgrading of 10–15% absolute. Froths less than 50 cm showed no selectivity. This ...

More

Improvement of the Flotation Selectivity in a Mechanical ...

2018-6-15  The results also indicate that a pronounced selectivity effect was obtained from the ultrasonic flotation of both barite and chalcopyrite. The use of ultrasound in the froth remarkably improves the quality of the chalcopyrite concentrate, especially at the shallow froths.

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COLUMN FLOTATION FOR THE BENEFICIATION OF IRON

2011-11-8  In recent years, flotation columns are being used for improving the grade-recovery performance of froth flotation due to their inherent selectivity would make it possible for reducing multistage conventional flotation circuits to only one or two stage column flotation. Many iron-ore producers world-

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Column Flotation - SGS

column flotation, covering pilot testing and scale-up, circuit design of selected applications, and instrumentation and control. We begin with a description of the key features and concepts of column flotation. KEY FEATURES AND CONCEPTS . A schematic of a flotation column is shown in Figure 1. Industrial flotation columns are 6-14 m in height ...

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THE USE OF COLUMN FLOTATION FOR THE RECOVERY

2014-7-16  Column flotation devices were re-introduced for mineral processing in the late-1960’s in Canada by Boutin and Wheeler (1967) at which time wash water addition to the froth was used to eliminate entrainment of hydrophilic materials to the float product. By the late-1980’s column flotation had became a proven industrial

More

(PDF) Enhanced column flotation performance for fine coal ...

Separation performance of mechanical flotation cell and cyclonic microbubble flotation column (FCMC) was compared in terms of the beneficiation of high-ash coal fines that has the characteristics ...

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Computational fluid dynamics (CFD) numerical

2018-3-19  Abstract: Packing is a useful method to obtain a static separation environment for a high flotation recovery and selectivity. In this study, the single-phase flow field in a packed lab-scale cyclonic-static microbubble flotation column (FCSMC) was investigated by computational fluid dynamics (CFD) simulation. ...

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A Brief Review of Pulp and Froth Rheology in Mineral

In mineral flotation, rheological problems have limited the efficient upgrading of low-grade and complex ores. Since pulp and froth rheology are deemed to play different roles in influencing the separation performance, in this paper, a brief review on pulp and froth rheology in flotation is provided, with an objective of developing a basic understanding of rheology in flotation.

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Selective Detachment Process in Column Flotation Froth

The selectivity in flotation columns involving the separation of particles of varying degrees of floatability is based on differential flotation rates in the collection zone, reflux action between the froth and collection zones, and differential detachment rates in the froth zone. Using well known theoretical models describing the separation process and experimental data, froth zone and ...

More

Improvement of the Flotation Selectivity in a Mechanical ...

2018-6-15  The results also indicate that a pronounced selectivity effect was obtained from the ultrasonic flotation of both barite and chalcopyrite. The use of ultrasound in the froth remarkably improves the quality of the chalcopyrite concentrate, especially at the shallow froths.

More

Column Flotation - SGS

column flotation, covering pilot testing and scale-up, circuit design of selected applications, and instrumentation and control. We begin with a description of the key features and concepts of column flotation. KEY FEATURES AND CONCEPTS . A schematic of a flotation column is shown in Figure 1. Industrial flotation columns are 6-14 m in height ...

More

COLUMN FLOTATION FOR THE BENEFICIATION OF IRON

2011-11-8  In recent years, flotation columns are being used for improving the grade-recovery performance of froth flotation due to their inherent selectivity would make it possible for reducing multistage conventional flotation circuits to only one or two stage column flotation. Many iron-ore producers world-

More

Column Froths: Mineral Processing and Extractive ...

2007-4-6  Abstract. Column froths are discussed in terms of structure, effect of variables on gas holdup profiles, cleaning (rejection of entrained particles), selectivity (between hydrophobic species), carrying capacity and froth stability

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Froth Flotation Process - Mineral Processing Metallurgy

2021-1-20  The flotation columns use air spargers to generate air at the bottom of a tall column, while introducing slurry above and generating a mixing action, as well. Mechanical cells usually have a higher throughput rate, but end up

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Entrainment of Particles into Flotation Froths: Mineral ...

2007-4-6  Data on the structure and water content of flotation froths is summarized and an explanation sought for the way in which water, and hence entrained particles, are transported from pulp to froth column to concentrate. More Share Options . Related research .

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A Brief Review of Pulp and Froth Rheology in Mineral

In mineral flotation, rheological problems have limited the efficient upgrading of low-grade and complex ores. Since pulp and froth rheology are deemed to play different roles in influencing the separation performance, in this paper, a brief review on pulp and froth rheology in flotation is provided, with an objective of developing a basic understanding of rheology in flotation.

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选矿专业英语词汇.doc - BOOK118

2017-5-26  选矿专业英语词汇.doc,矿物加工工艺学(浮选部分)英文词汇 floatation 浮选 froth flotation 泡沫浮选 direct flotation 正浮选 reverse flotation 反浮选differential flotation 优先浮选flotation 混合浮选fineness of grinding 磨矿细度 fractionation,sizing 分级 ...

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