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selectivity in column flotation froth

Selectivity in column flotation froths - ScienceDirect

01/07/1988  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. This difference between deep and shallow froths is attributed to mixing caused by the ...

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Selective detachment process in column flotation froth ...

01/05/2006  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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Selective detachment process in column flotation froth

Selective detachment process in column flotation froth. Minerals Engineering, 2006. Rick Honaker

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WO2011028736A2 - Method for enhancing selectivity and ...

The method relates to particle separation from a feed stream. The feed stream is injected directly into the froth zone of a vertical flotation column in the presence of a counter-current reflux stream. A froth breaker generates a reflux stream and a concentrate stream, and the reflux stream is injected into the froth zone to mix with the interstitial liquid between bubbles in the froth zone.

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Selectivity and power of frothers in copper ore flotation

Froth flotation is widely used for upgrading of ores and other materials. Efficiency of flotation depends on many parameters, including type, chemical structure and dose of flotation reagents. Selection of a proper frother in flotation depends on the material used, necessary dose of frother and its selectivity. The selectivity of flotation can be characterized by proper separation factors and ...

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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

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selectivity 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. Froth depth is shown to be a

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(PDF) Column flotation of very fine particles

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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Method for enhancing selectivity and recovery in the ...

Honaker et al, “Selective detachment process in column flotation froth,” Minerals Engineering 19 (2006). Ata et al, “Collection of hydrophobic particles in the froth phase,” Int. Jour. Miner. Process. 64 (2002). Schultz et al, “The flotation column as a froth separator,” Mining Engr. 1450 (1991).

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Column Flotation Cells - Mineral Processing Metallurgy

24/04/2018  Column flotation cells, like mechanical cells, are used to perform mineral separations. Column cells do not use mechanical agitation (impellers). Instead, mixing is achieved by the turbulence provided by the rising bubbles. Columns are mostly used to produce final grade concentrates because they are capable of high selectivity. Other features which distinguish them from mechanical cells are ...

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Improvement of the Flotation Selectivity in a Mechanical ...

Request PDF Improvement of the Flotation Selectivity in a Mechanical Flotation Cell by Ultrasound In this study, the effect of ultrasound on froth and pulp phases has been investigated in the ...

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Selectivity and power of frothers in copper ore flotation

Froth flotation is widely used for upgrading of ores and other materials. Efficiency of flotation depends on many parameters, including type, chemical structure and dose of flotation reagents. Selection of a proper frother in flotation depends on the material used, necessary dose of frother and its selectivity. The selectivity of flotation can be characterized by proper separation factors and ...

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Column Flotation - SGS

The froth of a flotation column is usually . water washed, with approximately as much wash water as there is water reporting to the froth. The water is most commonly added via pans, perforated with 4-8 mm diameter holes, located 20-30 cm above the froth, thus generating a “rain” of water onto the surface of the froth. The key objective of water 2washing the froth is to minimize recovery of ...

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Selective detachment process in column flotation froth

Selective detachment process in column flotation froth. Minerals Engineering, 2006. Rick Honaker

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Selective detachment process in column flotation froth

Download Citation Selective detachment process in column flotation froth The selectivity in flotation columns involving the separation of particles of varying degrees of floatability is based ...

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Column Flotation Cells - Mineral Processing Metallurgy

24/04/2018  Column flotation cells, like mechanical cells, are used to perform mineral separations. Column cells do not use mechanical agitation (impellers). Instead, mixing is achieved by the turbulence provided by the rising bubbles. Columns are mostly used to produce final grade concentrates because they are capable of high selectivity

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WO2011028736A2 - Method for enhancing selectivity and ...

The method relates to particle separation from a feed stream. The feed stream is injected directly into the froth zone of a vertical flotation column in the presence of a counter-current reflux stream. A froth breaker generates a reflux stream and a concentrate stream, and the reflux stream is injected into the froth zone to mix with the interstitial liquid between bubbles in the froth zone.

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Method for enhancing selectivity and recovery in the ...

Honaker et al, “Selective detachment process in column flotation froth,” Minerals Engineering 19 (2006). Ata et al, “Collection of hydrophobic particles in the froth phase,” Int. Jour. Miner. Process. 64 (2002). Schultz et al, “The flotation column as a froth separator,” Mining Engr. 1450 (1991).

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(PDF) Column flotation of very fine particles

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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Selectivity and power of frothers in copper ore flotation

Froth flotation is widely used for upgrading of ores and other materials. Efficiency of flotation depends on many parameters, including type, chemical structure and dose of flotation reagents. Selection of a proper frother in flotation depends on the material used, necessary dose of frother and its selectivity. The selectivity of flotation can be characterized by proper separation factors and ...

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US7992718B1 - Method for enhancing selectivity and ...

The method relates to particle separation from a feed stream. The feed stream is injected directly into the froth zone of a vertical flotation column in the presence of a counter-current reflux stream. A froth breaker generates a reflux stream and a concentrate stream, and the reflux stream is injected into the froth zone to mix with the interstitial liquid between bubbles in the froth zone.

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Column Flotation • Theory and Practice

FROTH FLOTATION : RECENT TRENDS (cr?lIME, JAMSHEDPUR, 1998; pp_ 44-63 Column Flotation • Theory and Practice S.R.S. SASTR I Regional Research Laboratory, Bhubaneswar - 751 013 ABSTRACT Column flotation which employs a counter-current flow of slurry and air bubbles has proved to be a better alternative to the conventional mechanical cells for separation of minerals. Because of

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(PDF) Modified column flotation of mineral particles ...

Selective separation of the froth drop-back material avoids particle recirculation, which contaminate concentrates in conventional columns. Hence, pulp density, viscosity, hold-up and solids content in the 3PC column remains "constant" permitting a clearer cut separation.(2) Benefits attained with the use of the 3PC cell are in the flotation of rougher feeds or concentrates to decrease mass to ...

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PURIFICATION OF WHITE WATERS BY SELECTIVE FLOTATION

“Selective flotation of white water, ... produce froth without flotation chemicals due to the presence of calcium and surface-active extractives. Selective flotation removes contaminants at a low expense of yield, and in the case of white waters, would also tend to reduce the need for defoamers. Although the concept of white water flotation is not novel, only a few publications are available ...

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FROTHING AT THE LIP - STABILITY IN YOUR FLOTATION CELL

2. to allow selective concentration of the desirable particles over non-desirable particles; 3.transportation of mineral particles from bulk slurry to the launder lip. FROTHING AT THE LIP - STABILITY IN YOUR FLOTATION CELL Author: Jason Heath Large froth surface area (low degree of crowding) in an Outotec TC50 Flotation Cell at a recently commissioned flotation concentrator in Australia ...

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