effect of ph on copper flotation

The Importance of pH in Flotation

In flotation, pH control is a vital method to control selective mineral separation. A standard depressant that is used is an Alkali. An Alkali is any substance that when mixed with Acid will neutralize each other and form a new chemical substance called a BASE. This is very important. The ore may be either alkaline or Acidic. To have a positive control over flotation, it is necessary to be ...

Effect of pH on the Recovery and Grade of Base Metal ...

Abstract—This study investigated the effect of pH on the recovery and grade of the Platinum Group Metals (PGMs) and base metal sulphides from the UG2 ore of the bushveld complex. This was achieved through running a series of test work in a Denver flotation cell at varying pH 6-11 at constant reagent dosage. The UG-2 reef is characterized by two

The effect of clay minerals on the process of flotation of ...

Mar 15, 2019· Effect of phyllosilicates on the copper grade in chalcopyrite flotation (adapted from Farrokhpay and Ndlovu, 2013). Some strategies to reduce the negative effect of clay minerals on the process of flotation are the use of a variety of reagents such as rheology modifiers and/or the use of reagents that adsorb on the surfaces of clay particles ...

Cited by: 2Effect of pH, Concentration and Temperature on Copper and ...

A speciation study was conducted to investigate the effect of pH and temperature on the concentration of copper species. The thermodynamic speciation of copper shown as a function of pH in Fig. 1 at a temperature of 25 oC was calculated based on Equations 1 to 4 and values of equilibrium constants obtained from free energy of formation,

(PDF) A Review of the Flotation of Copper Minerals

ore or when the copper flotation is carried out at lower pH [7]. Another important parameter whic h has a remarkable effect on the flotation of sulphide minerals is pH. It is

Effect of pH on Copper Flotation Recovery VS Mass Pull

An example of testing the effect of pH on rougher flotation on pit samples and the results are presented. Since this is only an example, it needs reminding that not all ores will respond the same. Here, rougher flotation is most Selective at a pH of 9.5 as pH levels in the 9 to 10 range yielded 1% to 2% better recoveries. Mineralogy data also supports this and shows between 3% and 10% of the ...

RECOVERY OF COPPER FROM OXIDE COPPER ORE BY …

RECOVERY OF COPPER FROM OXIDE COPPER ORE BY FLOTATION AND LEACHING Kiraz, Emirhan M.S., Department of Mining Engineering Supervisor: Prof. Dr. Mustafa Ümit Atalay December 2014, 65 pages The aim of this study was the recovery of copper from the oxide copper ore by froth flotation and agitating sulphuric acid (H 2 SO 4) leaching.

Improving Flotation of Sphalerite - Effect of pH and ...

Improving Flotation of Sphalerite - Effect of pH and Activating Potential on the Kinetics of Copper Uptake and Xanthate Adsorption on Sphalerite 6.1. Abstract The effect of pH and electrochemical potential on copper uptake, xanthate adsorption and the hydrophobicity of sphalerite were studied from flotation practice point of view using

Effect of pH on pulp potential and sulphide mineral flotation

High pH values, which is a good way to depress pyrite and therefore to favour the flotation of copper and zinc sulphides, do not have the same effect on seafloor ore.

The effect of saline water on copper activation of pyrite ...

Jan 15, 2019· Saline water has been widely used in the flotation of copper sulfide minerals against pyrite where pyrite may be activated by copper ions emanating from copper sulfide minerals. The effect of saline water on copper activation on pyrite surface has not been studied before.

Cited by: 3Effect of pH on pulp potential and sulphide mineral flotation

High pH values, which is a good way to depress pyrite and therefore to favour the flotation of copper and zinc sulphides, do not have the same effect on seafloor ore.

Effects of pH and pulp potential on selective separation ...

flotation, the effects of pH, pulp potential, aeration by nitrogen and air during the Mo- Cu flotation were investigated. 2. Materials and Methods Through a systematic sampling program, a representative Cu-Mo concentrate sample was collected from the Sungun Cu-Mo concentrate thickener underflow which is …

Flotation of Nickel-Copper Sulphide Ore: Optimisation of ...

the flotation recovery of Ni, Cu and Co from a nickel-copper sulphide ore. The effect on flotation performance of various parameters such as pH, collector dosage, % solids and depressant dosage at different levels was investigated. Therefore, the main objective of the study was to optimize the process

The Effect of Sulfurization Process on Flotation of Copper ...

The effect of the parameters such as pH, pulp density, particle size and collector amount were investigated. KAX was used as collector and Dow-250 was used as frother. Key Words: Sulfurization, flotation, copper, gold, silver 1. INTRODUCTION Flotation has been utilized in the mineral processing industry to concentrate base

Journal of Chemistry - Hindawi Publishing Corporation

The adsorption of Cu species onto pyrite surface and its effect on flotation were investigated by using microflotation tests, first-principle calculations, and XPS surface analysis. The results indicated that the flotation of pyrite appears to be activated with CuSO4 only at alkaline pH, while being depressed at acidic and neutral pH. The adsorption of copper ions on pyrite surface was pH ...

The Effects of Different Depressants on Oxidised Copper ...

For refractory oxidised copper ores of Huidong Sichuan province, studing the different depressants on the influence of oxidised copper ores flotation behavior. The results showed that: the depressanting effect of the combination of sodium hexametaphosphate primarily is better. When the dosage of the combination of sodium hexametaphosphate and sodium humate reagent is 300 g/t, ratio is 2:1,the ...

EFFECT OF pH ON SURFACE CHARACTERISTICS AND …

EFFECT OF pH ON SURFACE CHARACTERISTICS AND FLOTATION OF SULFIDIZED CERUSSITE ... The effect of pH on surface characteristic and flotation of sulfidized cerussite was studied by micro-flotation tests, dissolution experiments, scanning electron microscopy (SEM) energy dispersive ... sulfidization flotation method. Oxidized lead, zinc and copper ...

The effect of copper sulphate addition on the recovery of ...

The effect of copper sulphate addition on the recovery of chromite generally neutral in charge. As a result of this charged nature, CMC adsorption can induce particle dispersion in addition to having a depressant effect which can influence flotation performance (Shortridge et al. 1999; Dalvie et al. 2000).

Low pH trial in the Ernest Henry Mining Copper Rougher ...

At high pH values (above 10.5), the forged media is passivated, so as the pH of the system drops the media corrosion rate increases and floods the system with the corrosion products, affecting flotation. As the high chrome media is much more inert, pH has less of an effect on copper flotation response.

Effect of feed preparation on copper activation in ...

Effect of feed preparation on copper activation in flotation of Mt Keith pentlandite Y. J. Peng*1,2 and D. Seaman2,3 In this work, the effect of copper sulphate on the flotation …

Dissolved-Air Flotation of Metal Ions

PH FIG. 1. Effect of sodium sulfide and pH on the removal of copper ions by dissolved-air precipitate flotation. [Cu2+ 1: 50 rng/L. Sodium sulfide expressed as percentage equivalent to copper. Dissolvcd-air flotation recycle 10%.

1 Froth Flotation – Fundamental Principles

will produce compensating effects in other areas (Klimpel, 1995) Froth flotation is a good example of an engineering “system”, in that the various important parameters are highly inter-related, as shown in Figure 1. It is therefore important to take all of Chemistry Components Collectors Frothers Activators Depressants pH

A study on the effect of active pyrite on flotation of ...

evaluated the effect of three chemical reagent configuration on selective flotation in low and high pyritic copper sulphide ores. They showed that the collector of isopropyl-n-ethyl thionocarbamate creates the highest copper grade and the lowest iron recovery (Hassanzadeh and Hasanzadeh, 2016).

The impact of water quality on flotation performance

The impact of water quality on flotation performance pH, Eh, DO and dissolved species in recycle water streams (e.g. thickener overflow, decant (tailings) dam return) contributing to a circuit water are also shown in Table I. TDS and TOC levels may also be raised by reagent addition for pH control (e.g. lime) and recycled organics (e.g ...

EFFECT OF pH ON SURFACE CHARACTERISTICS AND …

EFFECT OF pH ON SURFACE CHARACTERISTICS AND FLOTATION OF SULFIDIZED CERUSSITE ... The effect of pH on surface characteristic and flotation of sulfidized cerussite was studied by micro-flotation tests, dissolution experiments, scanning electron microscopy (SEM) energy dispersive ... sulfidization flotation method. Oxidized lead, zinc and copper ...

Low pH trial in the Ernest Henry Mining Copper Rougher ...

At high pH values (above 10.5), the forged media is passivated, so as the pH of the system drops the media corrosion rate increases and floods the system with the corrosion products, affecting flotation. As the high chrome media is much more inert, pH has less of an effect on copper flotation response.

The effect of copper sulphate addition on the recovery of ...

The effect of copper sulphate addition on the recovery of chromite generally neutral in charge. As a result of this charged nature, CMC adsorption can induce particle dispersion in addition to having a depressant effect which can influence flotation performance (Shortridge et al. 1999; Dalvie et al. 2000).

Effect of feed preparation on copper activation in ...

Effect of feed preparation on copper activation in flotation of Mt Keith pentlandite Y. J. Peng*1,2 and D. Seaman2,3 In this work, the effect of copper sulphate on the flotation …

Dissolved-Air Flotation of Metal Ions

PH FIG. 1. Effect of sodium sulfide and pH on the removal of copper ions by dissolved-air precipitate flotation. [Cu2+ 1: 50 rng/L. Sodium sulfide expressed as percentage equivalent to copper. Dissolvcd-air flotation recycle 10%.

A study on the effect of active pyrite on flotation of ...

evaluated the effect of three chemical reagent configuration on selective flotation in low and high pyritic copper sulphide ores. They showed that the collector of isopropyl-n-ethyl thionocarbamate creates the highest copper grade and the lowest iron recovery (Hassanzadeh and Hasanzadeh, 2016).

Combined Effect of Operating Parameters on Separation ...

Sep 24, 2018· Although copper flotation and the effect of key parameters and operational conditions have been studied previously [2, 3, 10, 31], the main focus of these studies have been the impact of each individual operational condition on the recovery of the flotation process. The combined effect of these factors on each other and on the efficiency and ...

THE EFFECT OF COPPER SULPHATE ON FROTH STABILITY

THE EFFECT OF COPPER SULPHATE ON FROTH STABILITY Wadzanai Nyabeze BSc(Eng) in Chemical Engineering, University of Cape Town ... The decrease in froth stability could have an effect on the overall flotation performance as a result of possible activation of gangue minerals by copper sulphate . Page | v ... 4.3.1 Effect of pH on the zeta potential ...

1 Froth Flotation – Fundamental Principles

will produce compensating effects in other areas (Klimpel, 1995) Froth flotation is a good example of an engineering “system”, in that the various important parameters are highly inter-related, as shown in Figure 1. It is therefore important to take all of Chemistry Components Collectors Frothers Activators Depressants pH

Statistical Evaluation and Optimization of Factors ...

The copper flotation waste generated from the copper industry is classified as “hazardous waste” according to literature. In this study, a series of experiments varying the pH, stirring time, and temperature were performed to study heavy metal release from copper flotation waste.

Modelling of pyrite depression process by lime in copper ...

Effect of pH value on the required concentration (mol/l) of ethyl xanthate [X-] ensuring maximum pyrite (1), Pyrrhotite (2) and chalcopyrite (3) flotation. Floatability of copper and iron sulphides in the absence of lime can be explained by taking into account the composition of natural sulphides oxidation products

Effect of alkalinity of a pulp on selective flotation of ...

We study the effect of one of the main parameters of flotation ore-dressing, specifically, alkalinity of the pulp, on the selective flotation of sulfide and oxide minerals of copper from the Udokan deposition ores (Chita oblast). It is found that the optimum values are pH = 9 for sulfide minerals of copper and pH = 10 for the oxide ones.

The Effect of Sulfurization Process on Flotation of Copper ...

In this study, experiments were carried out on copper ore containing gold and silver obtained from Kisecik village of Hatay, which is in the south of Turkey. Analyses of original ore showed that the sample contained 4.93 % Cu, 0.007 % Co, 0.92 % Zn, 11.41 % Fe, 10.72, % S, 4.72 g/t Au and 12.80 g/t Ag. It was determined that gold and silver could not be reached with satisfactory yields by ...

Published in: Journal of Minerals and Materials Characterization and Engineering · 2008Authors: Ibrahim Tegin · Recep ZiyadanogullariAffiliation: Dicle UniversityAbout: CopperEffect of Flotation Reagents for Upgrading and Recovery of ...

also depressed at pH 11. 3.2 Effect of pH on flotation Maintaining PAX and MIBC concentrations at 100 g/t and 200 g/t, respectively, flotation behav-iour of Cu and Mo was investigated at varying slurry pH ranging from pH 3 to 11 and the results obtained are presented in Table 3 and Fig. 3. Pulp density was maintained at 20% and flotation was