Copper Arsenic Flotation Selectivity-GOLD MINING

MINING

Study of Flotation Parameters for Copper Recovery from

activity and size created the considerable problems in implementation of selective flotation to obtain conditional copper and zinc concentrates. Since the demand for copper is growing constantly the need to develop processes and technologies to treat copper resources with high level of arsenic were established.

TACKLING IMPURITIES IN COPPER CONCENTRATES

Friedberg et. al. 2014 . However our interest is not limited to arsenic but extends to other impurities found in copper and nickel concentrates as well. One considers a “typical” copper concentrate as having about 25 % copper and some minor quantity of impurities preferably rich in precious metals.

Selective separation of Cu Zn and As from solution by

Abstract. The selective precipitation and flotation of copper zinc and arsenic ions from dilute aqueous solutions were investigated. Phase separation was accomplished effectively by the dissolved-air technique for the production of fine gas bubbles and a short-chain xanthate was applied as the collector for copper ions dialkyl-dithiocarbamate for zinc and ferric sulfate for the

Selective flotation of enargite from chalcopyrite by

The pre-oxidation of flotation pulp has been used to achieve selective flotation of chalcopyrite and arsenic bearing copper minerals i.e. enargite and tennantite Fornasiero et al. 2001; Guo

Selective Separation of Cu Zn and As from Solution by

Abstract. The selective precipitation and flotation of copper zinc and arsenic ions from dilute aqueous solutions were investigated. Phase separation was accomplished effectively by the dissolved-air technique for the production of fine gas bubbles and a short-chain xanthate was applied as the collector for copper ions dialkyldithiocarbamate for zinc and ferric sulfate for the pentavalent

PDF Selective froth flotation concentration of antimonite

Abstract— Mineral ore beneficiation and value addition has become a key factor for economic growth in Africa. Froth flotation process is used to concentrate relatively low grade ores. In Zimbabwe antimonite is mined together with lead and arsenic

copper arsenic flotation selectivity - BINQ Mining

BULK FLOTATION OF COMPLEX COPPER ORE FROM SIOCON …. Dec 15 2010 · … role in flotation.Selectivity in complex separation is dependent on the deli e balance … and Arsenic Copper Flotation Fig. shows copper …

The separation of arsenic from copper in a Northparkes copper

Sulfide-ore-bulk flotation followed by selective copper flotation with the addition of arsenic sulfide depressants can also separate copper and arsenic ores via conventional flotation 6 .

Processing of Complex Materials in the Copper Industry

A much more difficult mineral processing challenge is the selective flotation of arsenic-bearing copper minerals e.g. enargite Cu 3 AsS 4 and tennantite Cu Fe 12 As 4 S 13 . These minerals have flotation characteristics very similar to non-arsenic-bearing copper minerals chalcopyrite chalcocite and bornite .

Technical Note The selective flotation of arsenopyrite from pyrite

Flotation tests were conducted to compare the arsenopyrite depressing effect of MAA with pH control potassium permanganate and pre-aeration. The recovery and selectivity were optimised by varying the collector and depressant concentration pH and the effect of copper sulphate addition.

A critical review of surface properties and selective

Selective oxidation of minerals was investigated as a means to separate by flotation the copper sulfide minerals of chalcocite covellite and chalcopyrite from the arsenic copper sulfide minerals

Flotation Reagents’ Types and Working Principles CNFREE

Flotation reagents refer to the agent that used in mineral flotation process which can adjust the flotation behavior of minerals thus achieving a good effect of mineral separation.Currently using flotation reagents is the most flexible effective and convenient method of controlling flotation process.The commonly used flotation reagents can be mainly divided into three types according to

Effect of H2O2 and potassium amyl xanthate on separation of

These flotation results indi e a possibility for selective flotation of copper sulfide and arsenic-bearing copper minerals. Indeed bench-scale flotation tests show that the oxidation treatment using H 2 O 2 and the addition of PAX can deliver a satisfying separation of copper sulfide and arsenic-bearing copper minerals.

PDF PARTIAL ROASTING OF COPPER CONCENTRATE WITH

Since this mineral contain both arsenic and copper it is not possible to remove the arsenic by selective flotation. Partial roasting is a method to clean the concentrate from arsenic and thereby produce a suitable material for the copper smelter. Also mercury is commonly found in copper bearing minerals.

Selective Acid Leaching of Copper and Zinc from Old Flotation

Pulp density during agitation leaching S: L was 1: 5. Two samples of old flotation samples were studied. The first sample of flotation tailings contained 0.26% of copper 0.22% of zinc and 17.4% of iron; while the second sample contained 0.36% of copper 0.23% of zinc and 23.2% of iron.

Removal of Arsenic from Aqueous Solution by Adsorbing Colloid

Arsenic Removal by Adsorptive Flotation Methods. characterization and appli ion of a copper II -bound polymeric ligand exchanger for selective removal of

Technical Development of Impurity Removal in Mineral

The separation of arsenic from copper in a Northparkes copper–gold ore using controlled-potential flotation. International Journal of Mineral Processing 84 15-24. Smith L.K. Bruckard W.J. Davey K.J. 2009. The flotation behaviour of arsenic-bearing minerals in nickel sulphide flotation systems Enviromine 2009 Santiago Chile.

Selective Flotation - Mineral Processing and Metallurgy

Who would think that Selective Flotation of copper gold zinc or any metal would required that one must be able to feel pain and recognized and/or admit when it hurts. Flotation mass-pull is a process that is often misunderstood; a learner’s mistake made by non-operating types. You do not need to pump anything in the lab. In selective flotation less is more Over 2 years ago I wrote about

Selective flotation of enargite from copper sulphides in

Recent research has demonstrated promising results showing the possibility of separating arsenic-copper sulphides from other copper minerals by controlling the potential of the flotation pulp. Most of these studies were conducted on single mineral systems and the selective removal of arsenic-copper minerals in real ore systems is not well understood particularly the effects of mineralogical

FEEDING OPTIMIZATION OF PROCESSING PLANT: Different

ARSENIC IN COPPER CONCENTRATES The main product of flotation process is copper concentrate. Broadly speaking this process aims to increase the copper concentration usually about 30 times in order to make the subsequent smelting process more efficient.

Arsenic Minerals Flotation

Arsenic in complex orebodies. The selective flotation of enargite from copper sulphides in a complex ore system is discussed in this paper methodology and results a complex ore system was selected which had various levels of arsenic as enargite two ore samples with different arseni

flotation copper selective - justabreak.nl

counter flotation of copper lea . Mar 26 2018· Flotation Froth an overview ScienceDirect Topics. Froth flotation is a process that selectively separates materials based upon in the frothflotation of metallic ore of uranium copper zinc lead and iron. .. the hydrogen cyanide is recovered frm the eluent using a counter current stream of air.

Flotation separation of copper sulphides from arsenic

The removal of arsenic bearing minerals from concentrates is becoming more important as environmental laws become ever stricter with regard to smelter emissions. The onus is shifting to concentrate producers to remove these minerals from their product with penalties applying to materials containing greater than background amounts. The arsenic content of Rosebery copper flotation feed is

Arsenic in Copper Concentrate

In a certain case study of “high” Arsenic in Copper Concentrate almost 0.5% As produced by flotation and where the Cu Conc is mostly chalcopyrite and therefore

Selective reagents for COB - Sustainable Minerals Institute

Selective reagents for COB 5 Nov 19 CRICOS code 00025B 11 Fig. 4 - Recovery of arsenic tennantite and non-tennantite copper NTCu after 4min flotation as a function of pulp potential pH 12 . Reducing conditions left and oxidising conditions right . Reproduced from Smith and Bruckard 2007.

Arsenic pathways in Copper Mining - Sustainability Issues and

Further process development and economic modelling is required to better define the selective flotation process that may be incorporated into the project with the required level of confidence. This study provides an overview of the occurrences of arsenic in the full spectrum of activities across copper operations as well as potential

Flotation separation of copper sulphides from arsenic

Cleaner bank recoveries also indi e true flotation of arsenic minerals but to a higher degree than that of the rougher bank. This indi es that selective flotation of copper minerals against arsenic minerals may be more difficult. Download : Download full-size image; Fig. 4. Copper and arsenic recoveries in each cell along the cleaner circuit.

Selective Removal of Arsenic from Copper Concentrates

There is currently no widely accepted industrial process that specifically aims to separate copper and arsenic minerals by flotation. Arsenic bearing minerals such as enargite Cu 3 AsS 4 are a rich source of copper. Enargite contains 48 wt% of copper compared to chalcopyrite CuFS 2 which contains 34 wt% copper. In addition any separation

ARSENIC CONTENT IN THE LEAD FLOTATION CONCENTRATE IN

Copper ions if they are present in flotation pulp activate the flotation of arsenopyrite lowering the amount of xanthate needed for flotation 3 5 8 . The aim of the experimental testing the results of which are presented in this paper was to obtain rough lead concen-trate with the low content of arsenic. EXPERIMENTAL PROCEDURE

Selective flotation of enargite and chalcopyrite Request PDF

Although the flotation process shows various advantages compared to that of pyrometallurgical and hydrometallurgical processes selective flotation of arsenic-bearing copper and copper sulfide

THE USE OF PULP POTENTIAL CONTROL TO SEPARATE COPPER AND

copper and arsenic minerals floated very strongly and there was no selectivity between copper and arsenic. Arsenic separation using pulp potential control If the flotation behavior of tennantite were similar to that of enargite the most likely pulp potential region for

PDF Arsenic pathways in copper mining sustainability

This study seeks to investigate selective separation of copper-arsenic minerals from a copper sulphide ore in a batch flotation system under controlled pulp potential.

Selectivity and power of frothers in copper ore flotation

Selectivity and power of frothers in copper ore flotation 517 The ore was crushed in a jaw crusher to obtain particles smaller than 1 mm in size. Prior to each flotation experiment the crushed material was wet ground in a steel ball mill. The size distribution of the ore used as the flotation feed is presented in Table 1. Table 1.

A study on the modified flotation parameters and selectivity

Selectivity index SI and modified flotation rate constants of copper and iron were evaluated to rougher flotation circuit of the Sarcheshmeh copper ore by a series of batch flotation tests. Kinetics model of Agar was fitted to experimental data.

The selective flotation of enargite from other copper

The separation by flotation of enargite from other non-arsenic sulphide copper minerals is difficult as enargite is strongly floatable with thiol-type collectors and difficult to selectively depress with standard depressants such as lime cyanide sulphide and permanganate in conventional copper circuits Tajadod and Yen 1997 . There have

Sequential Copper–Lead–Zinc Flotation

To improve the selectivity between copper and lead a sequential copper-lead-zinc rougher circuit was tested. Each of the rougher circuits had a dedi ed regrind and cleaner circuit. The advantages of the sequential circuits are that the levels of selectivity can be increased particularly for copper and lead. With this process copper was recovered first with MBS depression of lead zinc and

Mineralogical and morphological factors affecting the

A positive correlation of arsenic copper and cadmium is observed in the flotation process. Arsenic-copper alloys in FSF slag account for nearly 90 % of arsenic-bearing phases. Different fates of arsenic are depended on its embeded ways. The recombination of As-O and Cu-S affects the selectivity of copper and arsenic.

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Copper Arsenic Flotation Selectivity