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Xinhai mineral processing equipment mainly include: grinding equipment, flotation equipment, dewatering equipment, magnetic separation equipment, and so on. Some of the equipment is Xinhai independent research and development, and has been awarded national patent.

depressants of aluminosilicates on copper flotation

Depression of iron sulphide flotation in zinc roughers

In this study, the three methods of oxygen conditioning, copper specific collectors and polymeric depressants have been used for the selective depression of iron sulphides during zinc sulphide flotation.

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Depressants Solvay

In the Cu Mo separation system, AERO174; depressants assist in the depression of copper and iron sulfides at lower doses than traditional depressants such as NaHS and Nokes reagents. Solvay has developed highly efficient and versatile sulfide mineral depressants in diverse applications.

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Depressant SHENYANG FLORREA CHEMICALS CO., LTD

Depressants for Iron sulfide (pyrite, pyrrhotite, marcasite) depressant used in the flotation separation of base metal sulphides. Also used as an alternative partial cyanide replacement to depress iron and zinc sulfides in Pb / Zn flotation. Depressants for Clay. Depressants for Pyrrhotite. Depressants for Bismuth. depressants for copper minerals

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The effect of copper sulphate addition on the recovery of

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

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Use of depressants in the direct flotation of a silicate

In this study, conducted in a laboratory scale, eight different depressants, organic and inorganic, were tested in the direct flotation of a Brazilian silicate carbonate phosphate ore. The best performance in the depression of calcite and silicates was achieved with cassava starch.

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CHAPTER 3 COMPARISON OF DIFFERENT PYRRHOTITE

depressants, i.e., S 7260 and S 7261, were obtained from Cytec and used after diluted to 1% solution. All flotation tests were conducted using tap water with pH adjusted to 9.0 9.5 using lime. 3.3.3 Test Procedure a. Grinding About 1.2 kg of the ore sample was wet ground with 0.3 g lime and 780 ml tap water in a steel ball mill for 20 minutes. b.

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MEI Blog Challenges in copper flotation Barry A. Wills

Sep 10, 20110183;32;There are a number of papers on copper flotation scheduled for Flotation 11 but two of particular interest to those involved with oxidised and oxide copper minerals will be given by workers from Australia, who have found encouraging flotation response of malachite and chrysocolla using hydroxamate reagents.

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The effect of copper sulphate addition on the recovery of

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

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Copper Lead Zinc ores Danafloat

Copper Lead Zinc ores. In most cases, lime is used as a pyrite depressant but some operations prefer soda ash because lime tends to depress precious metals. As described in the lead zinc process description, in some instances enhanced iron sulphide depression can be improved by aeration prior to the differential Cu Pb flotation step.

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Modelling of pyrite depression process by lime in copper

imperfection of technological processes of copper or zinc flotation at depression of iron sulphides by lime and, secondly, as the criteria for functional units of automation systems in optimization of these process. Keywords Flotation, Depression, Thermodynamic models, Pyrite, Zinc, Copper, Lime, Xanthenes. INTRODUCTION

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Selective separation of chalcopyrite from pyrite with a

Pyrite depression in copper ore flotation often requires large doses of inorganic depressants that lead to high toxicity, high costs, and low selectivity. Thus, this study offers a novel pyrite depressant, polyglutamic acid (PGA), in the selective flotation of chalcopyrite with xanthate as a collector.

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A review of pretreatment of diasporic bauxite ores by

Various depressants have been studied to examine selective depression of diaspore in reverse flotation . The most commonly used depressants are sodium hexametaphosphate ((NaPO 3) 6 SHMP

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Enhanced phosphate flotation using novel depressants

ENHANCED PHOSPHATE FLOTATION USING NOVEL DEPRESSANTS Froth flotation is the most efficient method for phosphate separation, which is a physic chemical separation process based on the difference of surface properties between the valuable minerals and unwanted gangue minerals. However, the presence of clay

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Effects of aluminosilicate minerals on coppermolybdenum

Fig. 5. Cu grade and recovery (a), Al2O3 and SiO2 recovery (b) curves for sample no. 4. aluminosilicate minerals in the copper otation circuit; so, in fol lowing section, the results of our study of potential solutions for Fig. 6. Effect of dextrin on copper grade and recovery for sample no. 4.

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1 Froth Flotation Fundamental Principles

Froth flotation is a good example of an engineering system, in that the various important parameters are highly inter related, as shown in Figure 1. It is therefore important to take all of Chemistry Components Collectors Frothers Activators Depressants pH Equipment Components Cell Design Agitation Air Flow Cell Bank Configuration

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Flotation of mixed copper oxide and sulphide minerals with

recover copper sulphides and oxides by otation from blended ore minerals. The copper sulphide recov ery did not decrease when processing the blended ore compared to treating the sulphide ore indepen dently. At a blend of 70% sulphide ore and 30% oxide ore, the rougher scavenger copper recovery was as high as 95.5%.

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Flotation Depressants Mineral Processing amp; Metallurgy

Flotation Depressants. The bubbles will have to carry more of the mineral that means they will begin to get smaller as the extra weight compresses them. Also the extra particles will overload the collector molecules. This will make the bond between the molecule and the bubble as well as the bond between the particle and the molecule weak.

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Flotation of sphalerite and pyrite in the presence of

promotes the oxidation of copper on pyrite as copper hydroxide, but has no effect on sphalerite. This increase in the amount of oxidation products on the pyrite surface and, as a result, decrease in xanthate adsorption may explain the depression of the flotation of pyrite in the presence of sodium sulfite. q2001 Elsevier Science B.V.

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Copper ores Danafloat Home

Copper ores. Cyanide can also be an effective iron sulphide depressant, where use is allowed, but cyanide can solubilize metal ions which may activate a wide range of mineral sulphide minerals which can negatively impact flotation selectivity. In some instances, soda ash or caustic soda may be used to control flotation selectivity.

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The Depression of Sphalerite during Carbon Pre flotation

during pre flotation significantly reduced the bulk flotation action and entrainment of sphalerite in the froth, (b) grinding the ore finer (P 80 = 40 181;m) reduced the recovery of sphalerite as composite particles during lead flotation, and (c) the pulp pH was

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Pyrite Depressant on copper ore Froth Flotation

Pyrite Depressant on copper ore (13 replies) 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. Depressing Pyrite is always a tricky matter.

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OPTIMIZATION OF FLOTATION PARAMETERS FOR

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.

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RECENT DEVELOPMENTS IN FLOTATION REAGENTS TO

was developed for the oxide flotation industry to depress silica and carbonates8. This depressant was tested on a number of base metal sulphide ore samples. With one exception, higher concentrate grade was measured. These results are summarised in Table 3. Table 3 Summary of flotation data measured with the addition of a combination depressant.

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ROLE OF STARCH AND METABISUPHITE ON PURE PYRITE

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 different pHs values. pH was 6.5 and 10 in pure pyrite study while it was 6.9 and 12 in pyritic ore study.

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Handbook of Flotation Reagents ktrungthuy.free.fr

Handbook of Flotation Reagents Chemistry, Theory and Practice Flotation of Sulfide Ores by Srdjan M. Bulatovic ISBN 0444530290 Publisher Elsevier Science amp; Technology Books Pub. Date April 2007

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(PDF) Effect of different depressants on galena flotation

Flotation recovery of galena approached the highest value at pH 7 and decreased at pH 11 without any depressant. As a result of experiments it is found that depressing effect of these depressants

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(PDF) Effect of different depressants on galena flotation

Effect of different depressants on galena flotation. depression and copper flotation, 17.5% Cu content using lime as a depressant. Flotation tests conducted in this investigation employ

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Copper Solvay

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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Flotation of Nickel and NickelCopper Ores kundoc

Else HFRC Bulatovic Ch016.qxd 12/4/2006 752 PM Page 401 16 Flotation of Nickel and NickelCopper Ores 16.1 ORE TYPES AND MINERALOGY There are more than 45 different nickel minerals, but only a few are of economic importance.

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Flotation depressants / Applications / Home Pionera

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. PIONERA BioPolymers can offer a significant economic advantage in flotation of minerals by increasing grade and recovery of metallic concentrates.

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