loading
selectivity in column flotation froth

Our Projects

latest works
Ask For Price

Selectivity in column flotation froths ScienceDirect

1988-07-01· 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

Ask For Price

Selectivity in column flotation froths Semantic Scholar

Abstract 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

Ask For Price

Selective detachment process in column flotation froth

2006-05-01· 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

Ask For Price

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

Ask For Price

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

Ask For Price

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

Ask For Price

OPTIMIZATION OF AIR-INJECTION SPARGERS FOR COLUMN

of the column improves selectivity by washing undesirable material that may get hydraulically entrained into the froth phase. A mayor constraint on column flotation capacity is froth overloading. The carrying capacity of the froth depends on the bubble surface area available for bubble-particle attachment. The bubble surface area, and hence carrying capacity, can be increased by reducing the

Ask For Price

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

Ask For Price

Evaluation of the selective detachment process in

2003-10-01· A flotation column was constructed that employs a unique design to separate the froth and pulp during continuous operation. The column was split at the froth-pulp interface as shown in Fig. 3 so that instantaneous separation of the froth and pulp phases could successfully be achieved. The flotation column also incorporates the ability to provide instantaneous stoppage of the process

Ask For Price

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).

Ask For Price

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

Ask For Price

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.

Ask For Price

Column Flotation Cells 911 Metallurgist

2016-02-28· 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

Ask For Price

WO2011028738A2 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.

Ask For Price

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

Ask For Price

Column Flotation Model Overview 911 Metallurgist

2014-04-06· With the advent of column flotation in the early 1980s, research funds were made available to study column flotation. Models began to evolve to describe the column cell froth zone, and these were later applied flotation cells in general. Lynch (1981) associated the recovery of hydrophilic particles with water recovery to the concentrate. Warren (1983) improved the entrainment concept by

Ask For Price

(PDF) Estimation of selectivity index and separation

2016-08-18· ABSTRACT Artificial neural network was used to predict the copper ore flotation indices of Separation Efficiency(SE) and Selectivity Index (SI) within different operational conditions. The aim was

Ask For Price

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).

Ask For Price

Column Flotation Cells 911 Metallurgist

2016-02-28· 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

Ask For Price

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

Ask For Price

(PDF) Enhanced column flotation performance for fine coal

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

Ask For Price

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

Ask For Price

Column Flotation Model Overview 911 Metallurgist

2014-04-06· With the advent of column flotation in the early 1980s, research funds were made available to study column flotation. Models began to evolve to describe the column cell froth zone, and these were later applied flotation cells in general. Lynch (1981) associated the recovery of hydrophilic particles with water recovery to the concentrate. Warren (1983) improved the entrainment concept by

Ask For Price

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.

Ask For Price

WO2011028738A2 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.

Ask For Price

Column Flotation Testing Better & Improved Recovery

2017-10-21· The advantages of column flotation include improved energy efficiency, utilization of natural settling and separation, reduced turbulence in the flotation cell, and closer control of critical flotation parameters such as bubble size, cell air content, airflow, retention time, froth depth, and froth cleaning. A reduction in reagent consumption using column flotation in comparison with

Ask For Price

OPTIMIZATION OF AIR-INJECTION SPARGERS FOR COLUMN

of the column improves selectivity by washing undesirable material that may get hydraulically entrained into the froth phase. A mayor constraint on column flotation capacity is froth overloading. The carrying capacity of the froth depends on the bubble surface area available for bubble-particle attachment. The bubble surface area, and hence carrying capacity, can be increased by reducing the