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copper flotation depressants

Selective depression effect in flotation separation of done on the copper sulfide ore depressants for coppermolybdenum separation, there is still a lack of understanding on the flotation characteristics of copper molybdenum sulfides when DMSA is used as the depressant

Selective depressants for mineral flotation processes PIONERAs BioPolymers are versatile additives that increase returns for our customers Application results in important savings with minimal Health, Safety or Environmental issues

USE OF NON TOXIC DEPRESSANTS IN THE SELECTIVE FLOTATION OF COPPER LEAD ZINC ORES 113 C ANADIAN M ETALLURGICAL Q UARTERLY , V OL 47, N O 2 Sodium meta bi sulphite, ZnSO 4, caustic starch and activated carbon were the depressants used where sodium meta bi sulphite was employed for the depression of pyrite while starch was used for the

Conclusions and Recommendations The preliminary experimental work conducted during Phase I of this program suggested that sulfides and sulfites are promising as alternative depressants for pyrite in the flotation treatment of copper, lead, and zinc ores

Abstract Depression of pyrite is very important in sulphide ore flotation This paper investigates the role of non toxic depressants on the flotation of pyrite Starch and meta bisulphite were used as a depressant for pure pyrite sample and a pyritic copper ore at two

1 Froth Flotation Fundamental Principles Froth flotation is a highly versatile method for physically separating particles based on differences in the ability of air bubbles to selectively adhere to specific mineral surfaces in a mineral/water slurry The particles with attached air

The copper flotation tailings are the feed to the sphalerite flotation circuit where the zinc minerals are floated as explained in the lead zinc flotation section Sphalerite is first activated with CuSO4 and floated typically at elevated pH for iron sulphide depression Combinations of xanthate with either dithiophosphate and/or

We offer a broad range of solvent extraction reagents, collectors promoters, frothers, flocculants, and depressants Products include specialized collectors used in the separation of copper sulfide ores and for copper containing byproduct metals, such as gold and molybdenum Flotation

Copper Molybdenum Flotation depressant sodium sulfide yellow flake how to sererate the molybdebun from copper molybdenite ores by using sodium sulfide yellow flake as depressant agent and collecting agent Copper Molybdenum ores Molybdenite MoS2 is the predominant economic molybdenum mineral While naturally very hydrophobic and can

Introduction to Mineral Processing Froth Flotation Depressants OrfomR D Series Depressants Chemicals referred to as depressants are added to the pulp to reduce the flotation of the copper minerals while allowing the molybdenum minerals to float The tailings from the molybdenum plant are the final copper concentrate typically

In this study, chitosan polymer was tested as a potential selective green depressant of pyrite in the bulk flotation of galena PbS and chalcopyrite CuFeS2 from sphalerite ZnS and pyrite FeS2 using sodium isopropyl xanthate as a collector and 4 methyl 2 pentanol MIBC as a frother Flotation tests were carried out in a D12 Denver flotation laboratory cell in the presence and absence of

Widely diverse mechanisms exist for the action of a range of selective sulphide flotation depressants Collector desorp tion, leaching, competitive adsorption, formation of hydrophilic reaction product coatings, action as reducing agents, and action as lattice oxidizing agents are discussed Detailed attention is focused on the latter two mechanisms

Additionally, conventional pyrite depressants such as sodium cyanide, sodium hydro sulfide and Nokes reagent are toxic, highly regulated, difficult to handle and present an overall costly alternative Figure 1: Copper / Iron ratio for recovery in flotation test for 150g/t Pionera F 250

pyrite depression in copper flotation Grinding Mill China The Gulin product line, consisting of more than 30 machines, sets the standard for our industry

Depression of pyrite in porphyry copper flotation Ian Wark Research Institute Australian Research Council Special Research Centre For Particle and Material Interfaces M

Synthetic dyes are commonly used for graphite depression in poly metallic flotation circuits however, these dyes can be very expensive The aim of this study is to evaluate performance of certain low cost alternative depressants for a complex lead zinc Pb Zn ore rich in graphite Gr C on a conventional mini pilot scale flotation circuit

inorganic depressants for coppe lead zinc ores flotation The use of two or more depressants is referred to as a depressant system of massive sulphide lead zinc, copper zinc and copper lead zinc or have been observed with a number of organic and inorganic depressant combinations using laboratory scale batch tests, optical microscopy and continuous flotation tests

ABSTRACT The flotation of desired mineral ores is selectively depressed by the use of an effective amount of a polyoarboxylic acid or salt thereof in a reverse flotation process As an example, the flotation of iron containing minerals, such as iron oxides or iron powder, is selectively depressed when compared to the flotation of silicate gangue thus facilitating the recovery of the desired

Flotation Depressants What is a Flotation Depressant used for The function of depressants is to prevent, temporarily, or sometimes permanently, the flotation of certain minerals without preventing the desired mineral from being readily floated Depressants are sometimes referred to as inhibitors

Flotation parameters including pH, collector addition or dosage and type, flotation time and depressants were controlled to obtain an enargite concentrate with high As and chalcopyrite concentrate and final tailings with As content below 0 5mass 2 Experimental 2 1 Samples Two high grade copper ore samples hand picked from two

inorganic depressants for coppe lead zinc ores flotation The use of two or more depressants is referred to as a depressant system of massive sulphide lead zinc, copper zinc and copper lead zinc or have been observed with a number of organic and inorganic depressant combinations using laboratory scale batch tests, optical microscopy and continuous flotation tests

synthetic polymeric depressants for copper gold ores flotation Brown Corpus list Excel Compleat Lexical brown_freq worrisome worry worry worryin worrying worse worsened worsens worship worshiped worshipful worshiping worshipped worshippers worshipping worst worst marked

May 05, 2010 Froth Floatation Process Froth flotation is a process for selectively separating hydrophobic materials from hydrophilic This is used in several processing industries

This flotation step is conducted at alkaline pH In the case where galena is floated and the copper minerals are depressed, copper depression can be achieved by using sodium sulphide, hydrosulfite, lime, cyanide, zinc cyanide and/or ferricyanide complexes Selection of flotation reagents and frothers is an important, even critical, consideration

The bulk copperlead flotation with depression of zinc followed by copperlead separation and re flotation of zinc is the most common practice in the treatment of copperleadzinc ores About 90 of operating plants use this method The bulk concentrate is usually contaminated with pyrite and zinc

of copper sulphate dosage that can activate the chromite and also to evaluate the effect of the depressant type and dosage on the recovery of chromite in the flotation of UG2 ore The two depressants selected were for evaluation of the guar gum, IMP4 and the carboxymethyl cellulose CMC, KU5 Flotation performance was evaluated using the

DETA is a polyamine used as a depressant for pyrrhotite and arsenides in copper and nickel mineral flotation Triethylenetetramine TETA Higher ethyleneamines, such as TETA can also be used as a depressant for pyrrhotite and arsenides in copper and nickel mineral flotation

Solvay has developed highly efficient and versatile sulfide mineral depressants in diverse applications In the Cu Mo separation system, AERO® depressants assist in the depression of copper and iron sulfides at lower doses than traditional depressants such as NaHS and Nokes reagents

The recovery of these copper minerals by flotation or hydrometallurgy from ores, typically containing 0 5 TCu open pit mines and 1 2 TCu underground mines is of great commercial importance

Widely diverse mechanisms exist for the action of a range of selective sulphide flotation depressants Collector desorp tion, leaching, competitive adsorption, formation of hydrophilic reaction product coatings, action as reducing agents, and action as lattice oxidizing agents are discussed Detailed attention is focused on the latter two mechanisms

First lets change the amount of the Flotation Depressants used The valuable mineral that isnt liberated from the unwanted mineral will begin to be depressed along with the waste For the floatation operator, the change that will become most apparent is, that the color of the froth will begin to reflect more of the wanted minerals color

higher pH values caused depression of molybdenite too Castro and Bobadilla, 1995 In this study, the determination of the flotation behavior of a molybdenum ore was investigated testing different particle sizes, pH values, types and amounts of collector, and frother With the optimized flotation parameters, copper depression was examined

This work, carried out with a silicate carbonate phosphate ore, aimed at studying the performance of depressant agents of different origins in the separation of apatite from the contaminants calcite and silicates by laboratory scale flotation 2 Materials and methods

Request PDF on ResearchGate On Nov 1, 2015, Mingyang Li and others published Flotation separation of copper molybdenum sulfides using chitosan as a selective depressant

Depression of pyrite in the flotation of copper Trove In this case, the selective depression of pyrite flotation was attributed to the immobilisation of copper by xanthate at the chalcopyrite surface or its removal from solution, both mechanisms resulting in a reduced copper activation of pyrite

depressant dosage, 100g/t Relative significance of flotation parameters based on difference between max and min values indicates that pH has the most significant effect on the recovery of nickel, copper and cobalt during flotation Analysis of variance showed that pH and depressant dosage were the most significant parameters affecting the

Flotation parameters including pH, collector addition or dosage and type, flotation time and depressants were controlled to obtain an enargite concentrate with high As and chalcopyrite concentrate and final tailings with As content below 0 5mass 2 Experimental 2 1 Samples Two high grade copper ore samples hand picked from two

We offer a broad range of solvent extraction reagents, collectors promoters, frothers, flocculants, and depressants Products include specialized collectors used in the separation of copper sulfide ores and for copper containing byproduct metals, such as gold and molybdenum Flotation

 
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