effect of pulp density in froth flotation

Froth Flotation of Iron Ores

With the depleting reserves of high-grade iron ore in the world, froth flotation has become increasingly important to process intermediate- and low-grade iron ore in an attempt to meet the rapidly growing demand on the international market. In over half a century's practice in the iron ore industry, froth flotation has been established as an …

Hydrodynamics of froth flotation and its effects on fine and …

A review of the state-of-the-art on the scale-up of froth flotation machines was published recently, where the flotation tanks scale-up was comprehensively analyzed from two aspects, namely "kinetic scale-up" and "machine design scale-up", with consideration of hydrodynamic influence in both the pulp and froth zones (Mesa and …

Measuring density in the flotation process

The effect of flotation feed density on metallurgical performance has been investigated. Results of test work have shown that the pulp density affects key parameters of the flotation process in both the pulp and froth phases ( Runge et al, 2012 ).

The Life Cycle of Water Used in Flotation: a Review

In addition, the strategies including high pulp density flotation as well as the most promising alternatives to fresh water have been discussed in details, with the related mechanisms being demonstrated. ... (2012) An investigation into the effect of water quality on froth stability. Adv Powder Technol 23:493–497. Google Scholar Franks GV ...

Online Superficial Gas Velocity, Holdup, and Froth Depth …

Based on Figure 4, the following relationships may be determined from hydrostatics: where and are aerated pulp density and froth density, respectively, and is gravity acceleration. The aerated pulp density can be determined by dividing the pressure difference by the tube length difference. Additionally, the froth layer density can be …

Regulation of bubble size in flotation: A review

The actual flotation process is a complex, multi-factor coupling separation process. The bubble size is synergistically affected by the frother, collector, slurry properties, mechanical energy input, and air flow rate in the flotation cell. The effect of multi-factor coupling on the bubble size should attract sufficient attention.

Entrainment in froth flotation: The degree of

Despite the importance of solid concentration in froth flotation, its effect on flotation kinetics and entrainment has rarely been studied. ... It is widely known that pulp density has a marked ...

Effect of Ore Pulp Density and pH Value on Silica in Iron …

After the iron ore is fed to the froth flotation system and the iron ore pulp is obtained. This pulp is analysed with the sample size of the pulp being 171kg/m^3 density and the chemical component of the ore being manipulated to 100 PH. The silica concentrate that is obtained from the slurry is measured and noted down.

(PDF) Investigation of flotation parameters for copper recovery …

This study is focused on the froth flotation reprocessing of a copper mineral from flotation tailings. The effects of flotation parameters including pulp density, collector dosage, frother dosage ...

(PDF) Effect of particle size on the froth floatation …

Effect of particle size on the froth floatation of Sokoto phosphate ore for its beneficiation has been investigated and established. ... and flotation pulp density of 28.5% Solids show that ...

The effects of aeration rate, particle size and pulp density …

The kinetics of flotation tional variable. in a semi-batch process is described by [1-5] The overall effects of particle size, aeration rate and pulp density on the flotation kinetics M(t) = J M(Ka) exp [ Ka t] dKa (1) have been experimentally determined by 0 where M(t) is mass of floatable solids in pulp at flotation time t and M(Ka) dKa is ...

Effect of operating parameters on desulphurization of

The effects of operating conditions such as the froth depth, air flow rate, impeller speed, and pulp density on desulphurization of MT have been investigated. This study indicates that all of these parameters have effects on the flotation kinetics, recovery of sulphur and concentrate grade.

A practical approach to plant-scale flotation …

Frother has two main purposes in flotation. In the pulp phase it reduces bubble size by preventing bubble coalescence, and in the froth phase it increases froth stability (Laskowski, 2004). ... The effect of froth depth …

Fundamentals of froth flotation | ChemTexts

The effect of surfactant adsorption on the froth flotation behavior of minerals is analyzed. Functions of other reagents used in froth flotation are …

A Review of Fatty Acid Collectors: Implications for Spodumene Flotation

The effect of pulp density was investigated between 10% and 65% solids w / w with the best performance achieved between 40% and 50% solids, producing a concentrate grade of 6.8% Li 2 O with 77% lithium recovery. At lower pulp density, the grade and recovery both decreased, with concentrate grade dropping quickly at densities …

Effect of solids on pulp and froth properties in flotation

The formation and stability of froth is imperative for flotation. In order to investigate the effect of reagent interaction on froth performance, this paper used a self-made froth stability test ...

Maximizing REE Enrichment by Froth Flotation of Alaskan …

The objective of the study was to concentrate the REEs in the froth phase by froth-flotation of the fine size fraction (< 75 μm). ... pulp density (% solids), and collector dosage). ... test was designed using a three-factor three-level design in order to investigate the individual and interaction effects of three operational parameters (pulp ...

Effects of flotation operational parameters on froth stability …

The effect of flotation operational parameters on froth stability and froth recovery was studied. Froth stability was measured using a special column. To determine the froth recovery, the froth height change model and froth height exponential model were used. It was found that since the interactions between the pulp and froth zones affect the ...

The Effect of Tetrathionate Ions on the Surface Chemistry and Flotation …

Flotation was conducted at 25% pulp density. After copper–lead flotation, the pH was increased to pH 9–10 using lime and conditioning with 500 g/t of copper sulfate was carried out for 10 minutes. The slurry was then conditioned in 10 g/t of MIBC for 2 minutes and 60 g/t of SIBX for 1 minute. ... Effect of water quality on froth stability ...

Impact of flotation hydrodynamics on the optimization of …

The flotation beneficiation of phosphate ore is increasingly facing challenges, especially for finely disseminated sedimentary ores rich in carbonates. This study aims to optimize and assess the impact of key hydrodynamic parameters including pulp density, air flowrate and impeller speed on flotation and metallurgical responses (i.e. grade, …

Froth properties and entrainment in lab-scale …

In flotation, the froth characteristics strongly influence the separation process as they are linked to water recovery, bubble size, entrainment of gangue particles, flotation rate …

Hydrodynamic aspects of flotation separation

Flotation separation is mainly used for removing particulates from aqueous dispersions. It is widely used for ore beneficiation and recovering valuable materials. This paper reviews the hydrodynamics of flotation separations and comments on selected recent publications. Units are distinguished as cells of ideal and non-ideal flow. A brief …

Combined Effect of Operating Parameters on …

For this purpose, the effects of the pulp solids content, collector and frother dosage, and preparation and concentrate collection time were studied using a Taguchi experimental design. The results of …

(PDF) Fundamental principles of froth flotation

flotation rate, particle size recovery, air flow, pulp density, etc.) As a result, it is difficult to study the effects of any single factor in isolation, and compensation effects within the s ...

Review of the Main Factors Affecting the Flotation of Phosphate …

The way to successfully upgrade a phosphate ore is based on the full understanding of its mineralogy, minerals surface properties, minerals distribution and liberation. The conception of a treatment process consists of choosing the proper operations with an adequate succession depending on the ore properties. Usually, froth flotation …

A Brief Review of Pulp and Froth Rheology in Mineral …

The essential variables that affect the rheology of a flotation pulp and froth are discussed. The methods for measuring pulp and froth rheology are presented. The …

Flotation performance analysis on coal washery rejects

The froth height of 4.6 cm was observed at a pulp density of 8% solids (by weight) at both a collector and frother dosage of 0.48 kg/ton, while the minimum froth height of 3.0 cm was observed at a pulp density of 13% solids (by weight), indicating that the froth height decreases with the increasing pulp density. The optimum froth height of 4.0 ...

Pulp Level

The key variable to control is the pulp level in the cell, to ensure stable and efficient flotation performance. The pulp level can be measured by a number of different means. The most common and reliable system is a "float" resting at the froth/pulp interface, coupled with an ultrasonic sensor. The float is connected to a vertical shaft ...

Flotation separation of waste plastics for recycling—A review

Flotation is a promising method for separation of waste plastics, and plastics flotation receives increasing attention for recycling of plastics, which reduces the negative effect of waste plastics on environment and makes a good use of the secondary resource. This review surveys recent advances on plastics flotation, with respect to specific ...

Effect of flotation feed density on the operation of a …

Results of this testwork have shown that the pulp density does affect key parameters of the flotation process in both the pulp and …