Froth flotation | ore dressing | Britannica
Froth flotation, separation of minerals differing little in density but greatly in wettability by surfactants that stabilize a froth formed on the surface of an agitated suspension of the minerals in water. See ... ore dressing. Actions Cite verifiedCite While every effort has been made to follow citation style rules, there may be some ...
(PDF) Optimization of flotation conditions in the beneficiation of PGMs
Froth stability, which can be quantified using air recovery (the fraction of air entering a flotation cell that overflows in the concentrate as unburst bubbles), has been shown to be linked to ...
(PDF) Potential Processing Routes for Recovery of
The beneficiation of platinum group metals (PGMs) from pristine (unweathered) sulfide ores has conventionally been conducted through froth flotation, which typically achieves platinum recoveries ...
Flotation Conditioners -Modifiers -Activators -Depressants
This branch of chemicals will prepare the mineral surface so other reagents will be able to collect the metal. For Conditioners and Modifiers, it may be simply cleaning the surface of the particles, as in the case of removing oxidization, or it may be a chemical that these are the chemicals that bind the mineral to the air bubble to be lifted away from …
v118n1a8 Effect of frother and depressant interaction on …
flotation performance of Great Dyke ore. Nashwa (2008) reported on the effect on SIBIX and SIBIX-TTCs blends, but most of the work that has been reported is based on Bushveld Complex ore. Interaction effects between aeration rate and froth have been reported by Venkatesan and Harris (2014). The work showed that interaction effects were significant
Copper activation option for a pentlandite–pyrrhotite–chalcopyrite ore
IntroductionDifferent sulphide ores respond differently in the prospect of copper activation to thiols for froth flotation. With the BCL Selebi-Phikwe ore body, pentlandite–pyrrhotite–chalcopyrite co-occur and there is the constraint of fine pentlandite dissemination in the pyrrhotite, so that liberation is limited. In the presence of …
Flotation | Mineral Processing, Separation & Beneficiation
Flotation, in mineral processing, method used to separate and concentrate ores by altering their surfaces to a hydrophobic or hydrophilic condition—that is, the surfaces are either repelled or attracted by water. The flotation process was developed on a commercial scale early in the 20th century to
(PDF) The effect of copper sulphate addition on the recovery …
The PGMs are separated from the ore. ... Studies on the froth flotation of PGM ores abound ... while the activator copper sulphate (CuSO4) is most often used. The depressants, either ...
The PGM flotation predictor: Predicting PGM ore flotation …
The current version of the flotation predictor estimates fast and slow floating PGM fraction percentages and flotation rate constants by fitting the predicted recovery …
Copper activation option for a pentlandite–pyrrhotite–chalcopyrite ore
Introduction Different sulphide ores respond differently in the prospect of copper activation to thiols for froth flotation. With the BCL Selebi-Phikwe ore body, pentlandite–pyrrhotite–chalcopyrite co-occur and there is the constraint of fine pentlandite dissemination in the pyrrhotite, so that liberation is limited. In the presence of …
(PDF) 'Effect of frother and depressant interaction on flotation …
PDF | On Feb 1, 2018, JM.W. (Murdoch) Mackenzie published 'Effect of frother and depressant interaction on flotation of Great Dyke PGM ore' | Find, read and cite all the research you need on ...
The Recovery of Pgms from the UG2 Silicate Stream by …
However, to liberate the PGMs, the majority of UG2 ore is coarsely ground to around 80% passing 75 microns [6]. It is known that it is more difficult to liberate UG2 ore it contains high proportion of fine grained PGMs because minerals which have a grain size of < 10 µm, which makes the flotation less effective when valuable minerals are only
Flotation of Platinum Group Elements Ores: A Review
Since the PGMs are often associated with sulphides, copper sulphate is widely used as an activator in PGM flotation but can inadvertently activate the gangue minerals as well as reduce the ...
PGM extraction from oxidized ores using flotation and …
Flotation and hydrometallurgical processing routes for improving PGM recovery from a non-sulphide or oxidic PGM ore were investigated. The results indicated that alkyl …
Adsorption of copper sulphate on PGM-bearing ores and its …
DOI: 10.1016/J.MINENG.2016.02.004 Corpus ID: 100917887; Adsorption of copper sulphate on PGM-bearing ores and its influence on froth stability and flotation kinetics @article{Nyabeze2016AdsorptionOC, title={Adsorption of copper sulphate on PGM-bearing ores and its influence on froth stability and flotation kinetics}, author={Wadzanai …
How does PGM Flotation Work?
Activator; Depressants; pH; The second component which plays a key role when one must conduct PGM flotation either in a concentrator plant or in the laboratory, is the operations component where one must consider the mineralogy of the ore, feed rate, pulp density and particle size to successfully perform the flotation process.
inorganic chemistry
Copper sulphate had a significant effect on the maximum froth height obtained in static three-phase froth tests. Proposals to explain these observation are made. If the above-mentioned thing is taken into consideration, the role of $ce{CuSO4}$ is to provide $ce{Cu}^{2+}$ which will act as an activator in the manner explained above.
Evaluation of sodium isobutyl xanthate as a collector in the froth …
The dosage of a collector is an important factor that determines the efficiency of a froth flotation process. The representative sample of the carbonatitic Palabora copper ore ground 45 % passing ...
(PDF) Potential Processing Routes for Recovery of
The beneficiation of platinum group metals (PGMs) from pristine (unweathered) sulfide ores has conventionally been conducted through froth flotation, …
The PGM flotation predictor: Predicting PGM ore flotation …
Performance of froth flotation recovery plants for platinum group minerals (PGMs) is usually monitored by means of routine chemical assays of samples taken at various locations in the plant. Whilst these assays can alert the plant metallurgist to variations in recovery, the reasons for changes in recovery are not adequately revealed …
Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review
Nowadays, froth flotation of chalcopyrite ore has developed a large number of reagents that make it possible to improve the mineral's buoyancy conditions, both in the presence of ions that simulate the use of seawater or process water, and in conjunction with other minerals. ... Particle size P80 = 106 µm. pH = 5 fixed with H 2 SO …
Optimization of flotation conditions in the beneficiation …
The PGMs are concentrated by froth flotation using xanthate – type collectors and depressants of the polysaccharides family. Reagent dosages play the main role in the maximum recovery of PGMs ...
Planning and Design of a Process for PGM Ore Dressing
Planning and Design of a Process for PGM ore Dressing Froth Flotation Process Flow Sheet. Planning and Design of a Process for PGM ore Dressing Froth Flotation Results PGMs in feed = 3.28 kg/hr PGMs in Concentrate = 2.94 kg/hr PGMs in Tailings = 0.34 kg/hr Percentage of Extraction = 89.5 Percentage Purity = 90 . …
Adsorption of copper sulphate on PGM-bearing ores and its …
Copper sulphate is used as an activator in the flotation of base metal sulphides as it promotes the interaction of collector molecules with mineral surfaces.
Fundamentals of froth flotation | ChemTexts
Froth flotation is a physicochemical process that is used to separate fine mineral particles from aqueous suspensions by selective attachment of some types of minerals to air bubbles. Froth flotation is the most important mineral processing technology for the production of valuable mineral concentrates from which metals and minerals are …
EVALUATION OF BLENDED COLLECTORS FOR …
Froth flotation is a physico-chemical process that is used for separation of desired valuable minerals from the gangue minerals by utilising the difference in surface …
in froth flotation proess the ore particles go
A common example of this involves froth flotation. Froth flotation. The ore is first crushed and then treated with something which will bind to the particles of the metal compound that you want and make those particles hydrophobic. ... Another method of concentration of ores is the Froth Flotation Method. This is the process for concentration ...
Thiol collector blends for improved PGM recovery: a case study of a UG2 ore
The flotation tests were carried out using a 2 m high continuous column flotation cell which facilitated the generation of a deep froth, since this was the phase of most interest.
PGM extraction from oxidized ores using flotation and …
upgrading it. The flotation concentrate with the highest PGM recovery was leached using sulphuric acid in order to remove the base metals and further enrich it in PGMs. Extractions of 73.3% Cu, 82.9% Ni, and 8.1% Fe were achieved. Keywords PGM extraction, oxidized ore, flotation, leaching. Introduction
PGM extraction from oxidized ores using flotation and …
The results indicated that alkyl hydroxamate co-collectors were most effective for flotation recovery of PGMs from oxidized ore, with 78.5% Pt recovery using AM810. The superior PGM recoveries achieved by the AM810 co-collector were attributed to the ability of hydroxamates to form stable complexes by chelation with metals such as iron and ...