what ph is commonly used in copper ore flotation

A Copper Flotation Flowsheet Because the copper in this type of ore usually assays only plus or minus 1 copper the porphyry copper operations must be relatively large in order to be commercial The flowsheet in this study illustrates a typical 3000 ton per day operation

The copper minerals and waste rock are separated at the mill using froth flotation The copper ore slurry from the grinding mills is mixed with milk of lime simply water and groundup limestone to give a basic pH pine oil yes it comes from trees a byproduct of paper mills to make bubbles an alcohol to strengthen the bubbles and a collector chemical called potassium amyl xanthate or the potassium

Copper ores The main copper sulphide minerals are chalcopyrite CuFeS2 chalcocite Cu2S covellite CuS bornite Cu5FeS4 tetrahedrite CuFe12Sb4S13 and enargite Cu3AsS4 The largest source of copper is from porphyry ore deposits in which one or

A new reagent system developed by Versitech Inc with assistance from DOEs Inventions and Innovation Program recovers copper minerals at a much lower pH than conventional reagents and avoids floating pyrite The process reduces or even eliminates both the lime used in copper flotation and the accompanying carbon dioxide

Lime is the most commonly used pH modifier to depress pyrite in copper flotation Mu et al 2016a Mu et al 2016b The depression mechanism of pyrite by lime is attributed to the formation of hydrophilic species such as CaOH 2 FeOH 3 and CaSO 4 Hu et al 2000

Lime is commonly used as a pH regulator and depressant against iron minerals during the flotation recovery of copper minerals from copper porphyry sulfide ore It can also depress copper oxide secondary copper sulfide or gold minerals Allan and Woodcock 2001 Sun 2001 Liu et al 2008a

Flotation of copper at different alkaline pH from 7 up to 10 and using different Xanthates as collector vs recovery of copper may give some clue Minimum Pyrite obtained in copper concentrate is the starting point for further flotation testwork

The most widely used sulphidizer is sodium sulphide which is commonly used in the flotation of lead carbonate ores and also slightly tarnished sulphides such as pyrite and galena In the sulphidization of ores containing precious metals careful control must be exercised as in some instances sodium sulphide has been known to have a depressing effect on flotation of metallics

Froth flotation is a process for selectively separating hydrophobic materials from is used in mineral processing paper recycling and wastewater treatment industries Historically this was first used in the mining industry where it was one of the great enabling technologies of the 20th century

RECOVERY OF COPPER FROM OXIDE COPPER ORE BY FLOTATION AND LEACHING Kiraz Emirhan MS 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

A high pH is important in copper ore processing to maximize this mineral’s flotation properties Most copper ore slurries tend to be acidic Plants typically add lime to the slurry in the mill or floatation circuit increasing its alkalinity A typical copper operation contains many flotation cells often with a pH

Copper Sulfide Flotation Circuit The pulp from the Conditioner is treated in a 10cell “SubA” Flotation Machine and a 4cell “SubA” Flotation machine Sometimes conditioners are not provided however their use insures that reagents are thoroughly mixed into the pulp ahead of flotation

In this paper four different commonly used depressants were adopted in order to investigate the effect of depressants on chalcopyrite index and to investigate their inhibition effects on chalcopyrite experimental results indicate that in the flotation system of natural pH of pulp mixed reagent of xanthate and aerofloat sodium

Application Note pH Control in Copper Flotation for Maximized Product Yield Background Copper ore may be separated from crude ore using a flotation process that takes advantage of the physical as opposed to chemical properties of small copper ore particles To maximize the copper yield pH control is necessary in the flotation tanks

Vulcanization Flotation Of Copper Oxide Ore Sep 27 2019 hydrogen sulfide potassium sulfide etc and the most commonly used is sodium sulfide A copper sulfide film is formed on the surface of the sulfided copper oxide ore to make the surface of the copper oxide mineral have the surface property of the copper sulfide mineral and then

Copper extraction refers to the methods used to obtain copper from its ores The conversion of copper consists of a series of physical and electrochemical processes Methods have evolved and vary with country depending on the ore source local environmental regulations and other factors

Aug 03 2019 · Gold flotation in the treatment of simple metal sulfide ore with less cyanide harmful substances in the ore generally control the flotation pH 79

Abstract The ore is the oxide ore of Copper lead and zinc The ore has high Oxidation rate of Pbnearly 50 which contains 356 of Pb386 of Zn0209 of Cu The flotation flowsheet consisting of the scene is “Part of the mixed flotationinhibitor Zn and Pb

In order for the dixanthogens to function as collectors for chalcocite covel TABLEV Effect of dixanthogen solubility on copper mineral flotation collector concentration 10 2 mol 1 1 flotation pH 105 Collector min Solubility in Chalcopyrite Chalcocite water mol 11 R Kmin 1 R Kmin l Diethyl dixanthogen 13 10 a 955 308 823 130 Diisopropyl dixanthogen 110 6 b 778 102

Lime is the most economical and commonly used reagent for pH control in flotation • Ca 2 ions in lime can enhance depression of minerals and flotation selectivity in a variety of ores • For talc and clayrich ores Ca 2 ions can be detrimental and other pH modifiers are preferred •

1 Xanthate Used in Pyrite Froth Flotation Process In flotation of pyrite with xanthate butyl xanthate is usually used Generally after the activator copper sulfate is added to the pulp the mixed emulsifier of xanthate pine oil and water can

Xanthate as the flotation collector with strong collection effect is mainly used to enhance the hydrophobicity of the mineral surface to meet the requirements of te is commonly used in the flotation process of sulfide minerals Xanthate is a combination of alcohol sodium hydroxide and carbon dioxide which is an anionic collector It is light yellow soluble in water and

4 sulfite method sulfur dioxide the use of sulfur dioxide gas or sulfiting mixed concentrate the lead content is inhibited and the copper content is order to strengthen suppression can add increasing potassium chromate or even 2 and zinc sulfate etc can also be used during the heating heating flotation method finally all must use lime slurry pH adjustment to 5 7 and

Chemical analysis of this ore is shown in Table 1 1 solutions of all flotation reagents ie collector SIPX sodium isopropyl xanthate and depressant Betamin 300 were used for the investigations and 10 solutions of both analytical grade sulphuric acid and sodium hydroxide were used as pH modifiers

These investigations have revealed that molybdenite and quartz particles are negatively charged at the pH commonly used for bulk sulfide flotation namely 11 Factors affecting the flotation recovery of molybdenite Raghavan Srini Hsu Land L Factors affecting the flotation recovery of molybdenite from porphyry copper ores In

At present the commonly used beneficiation processes include gravity separation magnetic separation flotation and so on The chemical beneficiation process such as flotation process is more complicated than the physical beneficiation process su

Abstract The ore is the oxide ore of Copper lead and zinc The ore has high Oxidation rate of Pbnearly 50 which contains 356 of Pb386 of Zn0209 of Cu The flotation flowsheet consisting of the scene is “Part of the mixed flotationinhibitor Zn and PbCu mix flotationZn flotation