why is froth flotation used for sulphide ores

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Why is the froth flotation method only used for sulphide ores? - Quora

In froth floatation process, advantage is taken of prefferential wetting of ore particles by oil and gangue particles by water. Pine oil or eucalyptus oil has tendency to wet metal sulphides. Thus sulphide ore is present in oily froth whereas gang...

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Why is froth floatation process used to extract SULPHIDES y sulph ...

This method is based on the principle of the difference in the wetting properties of the ore and the gangue particles with the water and oil. This method is used for that metals whose ore gets preferably wetted by the oil and the gangue by the water. The sulphide ores preferably wetted by the oil and the gangue with the water.

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Froth flotation - Wikipedia

In 1897, the Elmore brothers installed the world's first industrial size commercial flotation process for mineral beneficiation at the Glasdir mine. The process was not froth flotation but used oil to agglomerate (make balls of) pulverised sulphides and buoy them to the surface, and was patented in 1898 with a description of the...

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Froth Floatation Process - FunScience.in

This method is used for concentration of sulphide ores of copper, lead and zinc. In this method, powdered ore is put in a tank full of water. And then, some Pine oil is added to it. In the tank the particles of sulphide ore are wetted by pine oil whereas the gangue particles are wetted bywater. Then air is passed through this...

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Explaining the Process of Froth Flotation - 911 Metallurgist

Mar 19, 2017 ... Recoveries in the mills treating low-grade copper sulphide ores have been advanced 10 to 20 per cent, by the installation of the process and similar increased ... gravity of which is less than that of the solid; (2) the preferential flotation of the sulphide portion of the mass; (3) the functions of the reagents used.

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Froth Flotation Process - 911 Metallurgist

Mar 25, 2017 ... “The single most important method used for the recovery and upgrading of sulfide ores”, that's how G. J. Jameson described the froth flotation process in ..... for instance, in the activation of sphalerite by copper sulphate a film of copper sulphide is deposited on the mineral following adsorption of the copper...

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Why is the froth flotation method selected for the concentration ...

This method is based on the principle of the difference in the wetting properties of the ore and the gangue particles with the water and oil. This method is used for that metals whose ore gets preferably wetted by the oil and the gangue by the water. The sulphide ores preferably wetted by the oil and the gangue with the water.

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Froth Floatation Process - Embibe

(ii) Froth floatation process: In some cases for example, sulphides ores of copper, zinc and lead concentration is brought by this method. In this metho. ... One of the processes used for concentration of ores is Froth floatation process. This process ... Sulphide ores of metals are usually concentrated by froth floatation process.

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What is Froth Floatation Process - YouTube

Dec 8, 2014 ... This is a method of concentration of ores used exclusively for Sulphide ores. Principle involved is the difference in the wetting properties of the ore and t...

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Froth Floatation Process - CBSE

Froth Floatation Process. In some cases for example, sulphides ores of copper, zinc and lead concentration is brought by this method. In this method advantage is taken of the referential wetting of the ore by an oil.The finely ground ore is taken in a tank containing water and 1% of pine oil or terpentine oil. A strong current of...

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Flotation of Chalcopyrite and Molybdenite in the Presence of ... - MDPI

Oct 14, 2016 ... flotation resulted in lower recovery rates and diminished froth characteristics. They also ... used as an environment-friendly alternative collector and frother in the flotation of sulphide minerals. Due to the ... South American Cu–Mo sulphide ore (0.7% Cu, 0.66% Cu–S, 0.0103% Mo, and 3.62% Fe) was used.

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Flotation of a copper sulphide ore from Okiep ... - Semantic Scholar

Introduction. Thiol collectors are used in the froth flotation of copper sulphide ores. The xanthates, dithio- phosphates and dithiocarbamates are classes of thiol collectors that each form different surface products on different copper sulphide minerals. It has been shown that the use of mixtures of thiol collectors can have...

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is hydrophobic, conventional froth flotation tech- niques can be used to separate them from the gangue. The objective of this research is to develop a flexible flow sheet dominated by sulphidization flotation and investigate corresponding reagent systems and techniques for recovery of lead and zinc from oxide sulfide ores.

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Role of surface chemistry of fine sulphides in their flotation P ...

Although the flotation of sulphide ores has been practised and studied for almost 75 years, the mechanisms that govem the interfacial processes that are involved in flotation and flocculation are poorly understood, mainly because of the difficulties of ..... an inherent potential for introducing complications are still used to study.

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Froth flotation of Aljustrel sulphide complex ore. - EBSCOhost

In the present study, an attempt is made to assess the feasibility of froth flotation of a complex sulphide ore, where the effect of liberation grade as well as depressant, collector and frother dosage was studied. Copper ... Lime and sodium metabisulphite, used as depressants, allowed to achieve a good flotation performance.

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Copper mining. From ore to copper. - School Science

much less energy is use than in traditional mining; no waste gases are given off; it can be used on ores with as little as 0.1% copper - for this reason, leaching extraction is ... About 80% of all copper extracted comes from sulphide ores. ... The ore is crushed, ground and then enriched (concentrated) by Froth Flotation.

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Copper Mining and Extraction Sulfide Ores

This KS3 education resource looks at copper mining, extraction and pyroprocessing of sulfide ores. ... This is done by heating the concentrated ore from froth flotation. It is heated to between 500 °C and 700 °C in air. ... it to sulfuric acid. This is either sold for industrial use or used to extract oxide ores of copper by leaching.

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Froth Flotation - Department of Chemical Engineering

Froth flotation can be adapted to a broad range of mineral separations, as it is possible to use chemical treatments to selectively alter mineral surfaces so that they have the necessary properties for the separation. .... This means that 95.7% of the copper present in the ore was recovered in the concentrate, while the rest was...

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optimisation of the froth flotation process of chingola refractory ores

ABSTRACT. Release analyses were done on the Chingola Refractory Ores (CRO), which is a mixture of refractory oxides and sulphide copper minerals with an average grade of 1.37% total copper. (TCu) with the goal of optimising the froth flotation process of Chingola Refractory Ores. Cupriferous mica, chalcocite, bornite,...

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Sulphide Ores - Clariant

Clariant Mining Solutions HOSTAFLOT® collectors include a range of xanthate replacement solutions. We provide ready to use liquid collectors that are non-flammable and do not form hazardous decomposition products like xanthates. Our alternatives have proven performance in the flotation of copper ores, polymetalic...

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CHEM-GUIDE: Concentration

The pulverized ore is separated by hydraulic washing, froth-floatation process, magnetic or chemical process, depending on the nature of the ore and its ... Used for. Concentration of heavy oxide ores of lead, tin, iron etc. ... Sulphide ore particles wetted and coated by pine oil rise up along with the froth (froth being lighter).

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Xam idea · Chemistry Froth Floatation Process

The froth is light and is skimmed off. It is then dried for the recovery of the ore particle. Froth Floatation process. It is possible to separate two sulphide ores by adjusting proportion of oil to water or by using ?depressants?. For example, in case of an ore containing ZnS and PbS, the depressant used is NaCN. It selectively...

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Froth Flotation of a Particular ore - CPUT Electronic Theses and ...

maximise the recovery of PGEs. The performance of the froth flotation process is largely dependent on the chemical additives used and these chemicals have been extensively studied. Mixtures of collectors are widely used in the flotation of sulphide and platinum group mineral. (PGM) ores. A range of performance benefits...

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the flotation of high talc-containing ore from the great dyke of ...

flotation feed. De-sXinhai the ore was able to reduce the depressant dosage up to 300 g/t as opposed to 500 g/t that is used at Mimosa Mine. Keywords: Froth ..... Sulphides. 1.5. 0.7. Silicates. 98.2. 99.1. The base metal sulphide assemblage consists of pyrrhotite, pentlandite and chalcopyrite and is similar to that of the...

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Introduction to Mineral Processing - Chevron Phillips Chemical

Froth flotation is considered to be the most widely used method for ore beneficiation. In ore beneficiation, flotation is a process in which valuable minerals are separated from worthless material or other valuable minerals by inducing them to gather in and on the surface of a froth layer. Sulfide and non-sulfide minerals as well...

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Beneficiation of arsenic bearing complex sulphide ore by flotation

Abstract: In this study beneficiation of a sulphide ore from the Gümüşhane-Black Sea Region of Turkey was investigated. Detailed ... with low arsenic content were tried to be produced by froth flotation. Individual concentrates of Pb ... The methods used in the processing of copper-lead-zinc ore could be classi- fied as follows...

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The effect of using pure thiol collectors on the froth flotation ... - SAIChE

Abstract—Sodium ethyl and potassium amyl xanthates are commonly used in bulk and selective froth flotation of pentlandite ores respectively. The xanthate collectors are sensitive to pH and their selectivity in treating complex ores is questionable. With deteriorating nickel sulphide ore reserves more selective collectors...

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Froth+flotation - SlideShare

Dec 30, 2016 ... The froth is removed and allowed to settle down This is called the froth-floating process. This process is used for sulphide ores of Cu, Pb and Zn; 8. ADVANTAGES OF FLOTATION OVER SEDIMENTATION High rise velocity permits small tankage. Ability to handle variable solids loading (can adjust air...

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crushing process of sulphide ore

crushg process of sulphide ore - mydiatour. crushg process of sulphide ore - … Frother Uses In Copper Flotation Crusher USA. The ma steps performed prior to the flotation process or froth flotation process is the crushg of rock Sulphide ores ... Get More Info. Chat Online...

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Flotation of low-grade gold ores - Research Collection

1. Gold in pyrite. 18. 2. Relation of the manner of gold occurrence to metallurgy . ,. 20. 3. Choice of ore-treatment method. 22. III. Flotation. 23. 1. Early attempts ...... effects of detrimental slimes. In modern froth notation, alkaline circuits are used almost exclusively for the treatment of sulphide ores and most nonmetallic ores as.

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US4908125A - Froth flotation process for the recovery of minerals ...

This invention relates to a collector composition for use in the froth flotation recovery of minerals, in particular of sulphide minerals such as pyrite, chacopyrite and .... 5 is a flow diagram of a froth flotation process used in Example 11. ... EXAMPLE 2: Flotation of another sample of the South African gold ore used in Example 1.

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Extraction of Zinc | Application Of Zinc Refining Process - Byju's

Dec 9, 2015 ... Froth Flotation process is mainly used to remove gangue from sulphide ores. The ore is powdered and a suspension is created in water. The main ingredients of the froth flotation are the Collectors and Froth Stabilizers. Collectors (pine oils, fatty acids etc) increase the wettability of the metal part of the ore...

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Advancing flotation process technologies to ... - The Weir Group

2017年9月13日 ... A flotation process is one method used throughout the industry to recover gold. It's a very cost-effective method for concentrating gold, and is a desirable process used for the upgrading of low-sulphide and refractory ore for further gold recovery treatment. Froth flotation is a process used to selectively...

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copper extraction and purification - Chemguide

Extraction, purification and uses of aluminium. ... Sulphide ores such as chalcopyrite are converted to copper by a different method from silicate, carbonate or sulphate ores. Getting copper from ... The ores typically contain low percentages of copper and have to be concentrated by, for example, froth flotation before refining.

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9. metallurgy - Sakshi Education

Oxide ores and carbonate ores are concentrated by this method. FROTH FLOATATION PROCESS. • This method is used when a higher ore contains impurities having higher density. •. This method is used for the concentration of Sulphide ores. (Eg: Copper pyrites, iron pyrites, Galena, Zinc blende etc.,). •. In this process...

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

Oct 21, 2011 ... recovery and grade of PGMs from UG2 ore by flotation. Flotation .... this way are sulphides and the widely used sulphide collectors ... During froth flotation the ore is crushed and ground to a specific size sufficient for mineral liberation. The ore is then suspended in slurry and mixed with reagent or collectors.

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19 - Flotation of Oxide Copper and Copper Cobalt Ores - MyCourses

and (b) anionic flotation method. 19.5.1 Sulphidization flotation method. This method is the most commonly used in beneficiation if oxide copper-bearing ore. The reagent schemes used to treat oxide copper ores, mixed copper sulphide oxide ores and oxide copper cobalt ores varies from one ore type to the next, mainly by...

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Extraction of Copper - 4College.co.uk- Salters Chemistry

It is used in plumbing, electrical wires, money (alloys), jewellery, ornaments and many other different objects. Copper comes ... 2. Froth Flotation ... There are two different types of minerals in the ore at this point; the chalcopyrite is a sulphide, and the rest are silicates containing anions made from silicon and oxygen atoms.

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Concentration - Enrichment of Ores, Metals and Non-metals ...

The processes used for removing the gangue from the ore are based on the differences between the physical or chemical properties of the gangue and the ore. At first the ore is crushed to powder. The pulverized ore is separated by physical processes like hydraulic washing, froth-floatation, and magnetic separation or by...

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Effect of Seawater on Sulfide Ore Flotation: A Review: Mineral ...

The flotation process in seawater is highly complex and multifaceted, wherein the chemistry is very different to that of pure water. The high saline environment compresses the electrical double layers resulting in (i) enhancement of the floatability for surfaces that are already hydrophobic; (ii) mitigation of the slime coatings;...

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