Customer case aboutcopper flotation sphalerite

copper flotation sphalerite

Critical copper concentration in sphalerite flotation

Jan 10, 2016 Sphalerite flotation and separation from other sulphide minerals are strongly dependent on pulp solution conditions such as pH and copper concentration but also temperature. The surface of sphalerite needs to be activated with copper ions to enable

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Effect of Copper Sulfate on Zinc Sphalerite Flotation

As an example of the beneficial effect of copper sulfate in the activation of zinc sphalerite toward flotation, the series of results shown in Fig. 1 is of interest. These represent rougher tests on a sample of heavy pyritic ore. The particular sample in question contained about 5.6% zinc as marmatite; and was treated in a circuit made alkaline with lime, using pine oil as a frother and

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Improving Flotation of Sphalerite Effect of pH and

conducted flotation tests of sphalerite- xanthate system and showed that the flotation of activated sphalerite is suppressed at the pH range of 6 to 9, depending on the amount of CuSO 4 added. They observed, as shown in Figure 6-1, that the larger the addition of copper sulfate, the wider

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Critical copper concentration in sphalerite flotation

Sphalerite flotation and separation from other sulphide minerals are strongly dependent on pulp solution conditions such as pH and copper concentration but also temperature. The surface of sphalerite needs to be activated with copper ions to enable collector adsorption and therefore sphalerite flotation.

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Electrochemistry of Copper Activation of Sphalerite and

the processes of sulphides flotation. The adsorption of potassium isobutyl xanthate (KIBX 3⋅10-3M) on sphalerite has been studied using electrochemical potential, FTIR technique and SEM. Non activated minerals and minerals activated with copper sulfate (10-4 M) and copper nitrate (10-4 M) have been investigated at pH 7.5. Surface species have

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MECHANISM OF SPHALERITE DEPRESSION IN AN OPEN

Plant and laboratory test work was performed in order to optimize a copper/zinc flotation separation circuit at Matagami concentrator, Canada. The testing identified a significant difference between the laboratory testing and the plant flotation, particularly for the sphalerite recovery in the rougher copper

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The Complete Collection of Copper Beneficiation Reagents

DMDC: It has a strong collection capacity for copper and a weak collection capacity for pyrite and unactivated sphalerite. It can be used for copper and sulfur separation and its flotation index is higher than butyl xanthate.

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Critical importance of pH and collector type on the

Feb 04, 2021 In the zinc flotation experiments, after pH adjustment, conditioning was performed by adding copper sulphate as sphalerite activator (250 g/ton for 2

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(PDF) A Review of the Flotation of Copper Minerals

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

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Copper Lead Concentrate Separation

Oct 01, 2015 Four basic approaches (Flowsheet and Reagent Variants) were investigated to separate lead for copper by flotation to produce Separate Concentrate products: This sample provided for this study contained 2.1 percent chalcopyrite, 0.5 percent galena, 14.3 percent sphalerite and 23 percent iron sulphides, present as mostly pyrite.

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Electrochemistry of Copper Activation of Sphalerite and

the processes of sulphides flotation. The adsorption of potassium isobutyl xanthate (KIBX 3⋅10-3M) on sphalerite has been studied using electrochemical potential, FTIR technique and SEM. Non activated minerals and minerals activated with copper sulfate (10-4 M) and copper nitrate (10-4 M) have been investigated at pH 7.5. Surface species have

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Depressing Mechanism of Sphalerite in Hot Flotation and

The mechanism of sphalerite depression in hot flotation (Pb flotation) and the flotation behavior of sphalerite activated with copper in the subsequent Zn flotation have been investigated. In single mineral flotation at pH 6 using potassium diethyl dithiophosphate as a collector, the floatability of sphalerite did not depend on pulp temperature

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(PDF) New collectors for sphalerite flotation

flotation of sphalerite from a copper-rougher tails. obtained from a Canadian mill occurred without acti-vation with copper sulfate, and this finding was veri-

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Critical importance of pH and collector type on the

Feb 04, 2021 In the zinc flotation experiments, after pH adjustment, conditioning was performed by adding copper sulphate as sphalerite activator (250 g/ton for 2

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DE-ZINCING OF LEAD-COPPER SULPHIDE MINERALS

Typical lead-copper-zinc sulphide minerals were found hard to be separated selectively by froth flotation in the plant practice operation due to part of sphalerite was progressively entrapped into lead-copper bulk flotation. A series of de-zincing on lead-copper flotation tests has been conducted in the laboratory to reduce unwanted zinc content.

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(PDF) A Review of the Flotation of Copper Minerals

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

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Influence of the Interaction between Sphalerite and Pyrite

During the selective flotation of sphalerite, copper sulfate (CuSO 4) is often used as activator to improve flotation performance. [4,5,6]. The copper activation of sphalerite follows an ion exchange reaction, and the uptake of Cu 2+ from the solution results

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Effect of Physisorption of Collector on Activation of

Oct 19, 2020 The studies into the mechanism of activation of sphalerite flotation by ions of heavy metals show that neither ion exchange nor electrochemistry explain the experimental facts, namely, activation of flotation of copper mineral by lead ions, activation of sphalerite flotation by zinc, or flotation in the presence of non-conducting surface layer with silver or mercury.

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Influence of the Interaction between Sphalerite and Pyrite

In this paper, the effect of pyrite on the activation of sphalerite was investigated by micro-flotation, copper adsorption experiments, X-ray photoelectron spectroscopy (XPS), and electrochemical measurement. The micro-flotation test results showed that the recovery and flotation rate of sphalerite with copper sulphate as activator and butyl xanthate as collector were significantly decreased

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ROLE OF STARCH AND METABISUPHITE ON PURE PYRITE

Shen et al. (2001) studied the effect of sodium sulphite on the flotation of sphalerite and pyrite in the presence of copper ions and they reported that sulphite promoted the formation of copper hydroxide on the surface of pyrite leading depression. Yamamoto (1980) proposed that sulphite ions depressed pyrite by

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Electrochemical Studies of Copper-Activation of Sphalerite

However, the contact angles and flotation recovery decrease at near neutral pH. This problem is caused by the adsorption of the copper-hydroxy species on the activated sphalerite surface. It was found that addition of small amount of complexing reagent can improve the flotation

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SELECTIVE FLOTATION OF GALENA AND SPHALERITE AT

collectors and the activation of sphalerite by heavy metal ions such as copper and lead. The different mechanisms of activation of sphalerite by copper and lead ions are discussed. The mineralogy of the Rosh Pinah ore is also presented in order to understand the parameters that may be involved during the selective flotation of the ore.

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Development of sphalerite activation regularity by copper

The adsorption regularity of copper sulphate on sphalerite surface can be defined by a thermodynamic analysis of sphalerite surface state and behavior of copper sulphate in solution was made. From the results of a complete chemical calculations of the minerals surfaces state, and experimental investigation. It is showed, that corresponding to minimum charge of the covered surface, that no

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Chapter 7. Depression of sphalerite with cyanide and zinc

copper-activated sphalerite is not efficient at lower dosages of zinc sulphate alone. In addition, Trahar et al. (1997) have shown that the use of zinc salts at pH 9 decreased the recovery of galena due to the coating by hydrophilic zinc hydroxide. A study on the deportment of sphalerite in the lead flotation circuit was carried out in the work

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Electrochemistry of Copper Activation of Sphalerite and

the processes of sulphides flotation. The adsorption of potassium isobutyl xanthate (KIBX 3⋅10-3M) on sphalerite has been studied using electrochemical potential, FTIR technique and SEM. Non activated minerals and minerals activated with copper sulfate (10-4 M) and copper nitrate (10-4 M) have been investigated at pH 7.5. Surface species have

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Depressing Mechanism of Sphalerite in Hot Flotation and

The mechanism of sphalerite depression in hot flotation (Pb flotation) and the flotation behavior of sphalerite activated with copper in the subsequent Zn flotation have been investigated. In single mineral flotation at pH 6 using potassium diethyl dithiophosphate as a collector, the floatability of sphalerite did not depend on pulp temperature

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THERMOMECHANICAL ASPECT OF SELECTIVE FLOTATION OF

The experimental data on copper-zinc ore flotation have shown that sphalerite and pyrite present at the final process stages of col-lective–selective flotation possess equal kinetics of floatability. This is particularly obvious in zinc flotation cycle, where pyrite is only depressed with lime and blue copperas activates both sphaler-

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DE-ZINCING OF LEAD-COPPER SULPHIDE MINERALS

Typical lead-copper-zinc sulphide minerals were found hard to be separated selectively by froth flotation in the plant practice operation due to part of sphalerite was progressively entrapped into lead-copper bulk flotation. A series of de-zincing on lead-copper flotation tests has been conducted in the laboratory to reduce unwanted zinc content.

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SELECTIVE FLOTATION OF GALENA AND SPHALERITE AT

collectors and the activation of sphalerite by heavy metal ions such as copper and lead. The different mechanisms of activation of sphalerite by copper and lead ions are discussed. The mineralogy of the Rosh Pinah ore is also presented in order to understand the parameters that may be involved during the selective flotation of the ore.

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Effect of Physisorption of Collector on Activation of

Oct 19, 2020 The studies into the mechanism of activation of sphalerite flotation by ions of heavy metals show that neither ion exchange nor electrochemistry explain the experimental facts, namely, activation of flotation of copper mineral by lead ions, activation of sphalerite flotation by zinc, or flotation in the presence of non-conducting surface layer with silver or mercury.

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CHAPTER 7 FLOTATION OF SULPHIDE MINERALS

Flotation of Sphalerite (ZnS) Flotation of sphalerite with amyl xanthate is possible at pH 3.5 and decreases as the pH is Then activation of sphalerite with copper sulphate and high pH to depress pyrite enables a sphalerite concentrate to be made. Finally a lowering of pH can

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ROLE OF STARCH AND METABISUPHITE ON PURE PYRITE

Shen et al. (2001) studied the effect of sodium sulphite on the flotation of sphalerite and pyrite in the presence of copper ions and they reported that sulphite promoted the formation of copper hydroxide on the surface of pyrite leading depression. Yamamoto (1980) proposed that sulphite ions depressed pyrite by

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The effect of mode of occurrence of galena and sphalerite

presence of sphalerite in the galena concentrate is also due to poor liberation between galena and sphalerite, especially in the middlings. Hence, selectivity could be improved by regrinding the rougher concentrate prior to the cleaning stage. Keywords: sulphide ores, flotation, flotation

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Differential flotation ofcopper-zincat PrieskaCopper Mines

the copper:zincratio inthe feed, the greater the zinc rejection andefficiency demands. Besides the economic inducement ofahigh copper recovery perse,ahigh copper extraction isimperative toensure that thezincconcentrate doesnotexceed the specified copper content, sincetestwork hasshown t~at afraction ofthecopper remaining inthecopper flotatIOn

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Chapter 7. Depression of sphalerite with cyanide and zinc

copper-activated sphalerite is not efficient at lower dosages of zinc sulphate alone. In addition, Trahar et al. (1997) have shown that the use of zinc salts at pH 9 decreased the recovery of galena due to the coating by hydrophilic zinc hydroxide. A study on the deportment of sphalerite in the lead flotation circuit was carried out in the work

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Copper ore processing technology development and research

The copper ore deposits in China are mainly divided into the following categories: 1) Porphyry Copper Deposits: The main minerals are chalcocite and chalcopyrite, with copper grade of 1.0-1.5%, and associated minerals are pyrite, sphalerite, molybdenite, copper-nickel ore and gold.

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US5599442A Collector composition for flotation of

New and improved processes and compositions for use in flotation recovery of metal values from base metal zinc sulfide ores are disclosed. The collector compositions for froth flotation of metal sulfide minerals comprise the combination of combination of 1) at least one allylalkylthionocarbamate compound having the formula ##STR1## wherein R is a C 2 to C 8 alkyl radical, preferably R is an

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The Application of Xanthate in Froth Flotation Process

However, after activation of the copper salt activator, the surface of the sphalerite is easily adsorbed by copper ions and becomes floatable, and the low-grade xanthate can be used for flotation. The adsorption product of xanthate on sphalerite is the zinc xanthate adsorption layer. 3. Xanthate Application in Copper Froth Flotation

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