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FLOTATION OF COPPER AND NICKEL SULFIDES FROM TALCOSE ...

A method for the flotation of nickel and copper sulphide minerals from talcose bearing ores using an alkaline circuit in which at least one of the alkaline reagents is soda ash or ammonium hydroxide and following conditioning of the pulp with a collecting agent of the xanthate family to activate the nickel and copper sulphide materials, the pulp is conditioned with a flocculating agent to ...

Reaction of metallic iron and copper sulphate in the ...

tests with the amount of copper sulphate increased f'rom. 2. to. 4:pounds was then made. Flotation Tests Employing 4 Pounds of C01?per Sulphate Per Ton. ot. Ore in the Prese:nce of. Varying. soun. ts of Iron. The procedure was. the. sam as that employed. in. the first· two series except that. tm. amotmt of copper sulphate was doubled. t~ In ...

Activation of Sphalerite by Ammoniacal Copper Solution in ...

3.3. Effect of SIBX Dosage. Different dosages of SIBX were used during the flotation experiments. The optimal activator dosages (4.0 × 10 −5 mol/L copper sulphate and 5.0 × 10 −5 mol/L ACS) were used to activate sphalerite. The effect of SIBX dosage on Zn recovery during flotation is shown in Figure 4.The recoveries increased with increasing SIBX dosage and reached the maximum …

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 ...

US2573865A - Flotation of cobaltite - Google Patents

US2573865A US8309A US830948A US2573865A US 2573865 A US2573865 A US 2573865A US 8309 A US8309 A US 8309A US 830948 A US830948 A US 830948A US 2573865 A US2573865 A US 2573865A Authority US United States Prior art keywords cobaltite acid flotation iron copper Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.

US4460459A - Sequential flotation of sulfide ores - Google ...

A sequential flotation process for the recovery of high-grade concentrates of copper, lead and cobalt-nickel from sulfide ores is provided. A primary grind ore pulp is conditioned with SO 2 as H 2 SO 3 under intense aeration, and the conditioned pulp subjected to sequential flotation, with regrinding and conditioning of a copper rougher concentrate obtained in the first flotation step for copper.

The Application of Xanthate in 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 be added at one time, which is better than the multiple addition of the flotation reagent, and the dosage of the flotation reagent will be saved.

Optimization and mechanism of gold-bearing sulfide flotation

Therefore, ammonium sulfate and copper sulfate have the optimum combination: ammonium sulfate of 200 g·t −1 and copper sulfate of 300 g·t −1. Rougher-collector experiments Xanthate and dithiophosphate are the most common collectors for sulfide ore flotation.

The Effect of an Excessive Addition of Copper Sulphate on ...

Flotation tests in a laboratory flotation cell at pH 8-8.5 and other sui}plementary tests were carried out on sphalerite-quartz and sphalerite-pyrite-'quartz mixtures. Depression of sphalerite resulted vvhen the addition of copper sulphate exceeded an optimum value. Evidence that this depression was due to collector deficiency because of reaction between copper sulphate and collector is presented.

Flotation of Copper oxide ore - Fodamon Machinery

Addition of reagents is of special significance to the flotation of copper oxide ores, especially sodium sulfide, which is not only an activator of copper oxide ores, but also an inhibitor of copper sulfide ores. Therefore, it is not appropriate to add enough reagents at one time, usually in batches and stages.

Critical importance of pH and collector type on the ...

In the zinc flotation circuit, sphalerite is activated using copper sulphate and floated with specified collectors. The schematic diagram of the actual Gushfil flotation plant is shown in Fig. 1 ...

The effect of copper sulphate addition on the recovery of ...

immediately prior to flotation. Reagents A 1% solution of copper sulphate was prepared using CuSO4.5H2O. The copper sulphate was always added prior to collector addition. As specified in the experiments performed, a dosage of either 30 g/ton or 90 g/ton was used. A copper sulphate dosage of 30 g/ton is the stoichiometric amount

CHAPTER 7 FLOTATION OF SULPHIDE MINERALS

Flotation of Chalcocite (Cu 2 S) Chalcocite (Cu 2 S) and chalcopyrite (CuFeS 2) are the two most commonly floated copper sulphide minerals. Bornite (Cu 5 FeS 4) and covellite (CuS) and energite (Cu 3 AsS 4) are normally present in lesser quantities. The complete flotation of chalcocite is achieved between ph = 1 to ph = 10 with ethyl xanthate.

Applications: Copper Compounds - Copper Sulphate

The metal industry uses large quantities of copper sulphate as an electrolyte in copper refining, for copper coating steel wire prior to wire drawing and in various copper plating processes. The mining industry employs it as an activator in the concentration by …

Recycling of process water Effect of calcium and sulphate ...

pyrite flotation but selectivity against zinc is adversely affected in flotation of copper and zinc when sulphate ions concentrations in the water is more than 100 mg/l. In Laisvall concentrator deterioration of lead flotation and over frothing was experienced due to precipitation of calcium carbonate from the mine water in pipes and spray nozzles.

The depression of pyrite in selective flotation by ...

In a parallel study on selective separation of copper and iron minerals, effective depression of pyrite was also achieved by these modified PAMs (PAM-H, PAM-C and PAM-S). However, it is worth noting that these PAMs lowered the copper flotation rate to around half its original value at the highest PAM concentration (Boulton et al., 2001a). 3.4.

The role of copper sulphate in pyrite flotation ...

The role of copper sulphate in the flotation of pyrite has been studied. A survey of a number of pyrite flotation plants using copper sulphate showed that in correct dosages it was able to increase both grades and recoveries. This was confirmed in batch tests. Copper sulphate had no significant effect on the rate of adsorption of potassium n ...

Copper activation option for a pentlandite–pyrrhotite ...

At 15 g/ton copper sulphate dosage, final silica recovery in the flotation concentrate is above the recovery under the condition without copper addition (Fig. 8a). Since the cumulative grade of silica in the concentrate increased with flotation time all through (Fig. 8 b), this recovery pattern characterizes entrainment [ 21, 22 ].

The role of copper sulphate in pyrite flotation ...

The addition of copper sulphate enhances the rate of pyrite flotation and the grade of concentrate. The role played by copper sulphate is not entirely clear, and a number of theories have been proposed to explain the observed effect. Firstly, it has been suggested that copper ions are adsorbed onto the pyrite surface, thus modifying the surface ...

US10005088B2 - Flotation of sphalerite from mixed base ...

The main objective of the invention was to develop a new flotation collector that could eliminate or reduce the amount of copper sulfate used in the flotation of sphalerite. Different series of collectors such as cupferrons, arylhydroxamic acids and amino mercaptans or amino thiols were synthesized and tested. Amino mercaptans/aminothiols were found to be very effective in floating sphalerite ...

Flotation Reagents' Types and Working Principles | CNFREE

Among the flotation reagents, commonly used activators for flotation are sulfuric acid, sulfurous acid, sodium sulfide, copper sulfate and so on. Inhibitors: It is a kind of reagents mainly used to increase the hydrophilicity of minerals and to form a hydrophilic film on the surface of the ore particles in flotation process.

inorganic chemistry - Froth floatation process - why CuSO4 ...

The role of copper sulphate in the flotation of pyrite has been studied. A survey of a number of pyrite flotation plants using copper sulphate showed that in correct dosages it was able to increase both grades and recoveries. This was confirmed in batch tests.

1 Froth Flotation – Fundamental Principles

Table 1: Grade/recovery performance of a hypothetical copper ore flotation process. Product % Weight % Cu Assay Feed 100 2.09 Concentrate 10 20.0 Tailings 90 0.1 (a) From Table 1, the Ratio of Concentration can be calculated as F/C = 100/10 = 10. If only assays are available, the ratio of concentration equals (20 – 0.1)/(2.09 – 0.1) = 10 ...

Role of Sodium Sulfide - Copper Lead & Zinc Ore Flotation

Role of Sodium Sulfide – Copper Lead & Zinc Ore Flotation. Sodium sulfide is one of the most widely used alkali metal sulfides in the flotation of copper, lead, and zinc minerals in their oxidized form. The sulfidization process, developed in the U.S.A. in 1915-20 for oxide copper minerals flotation, is especially suitable for oxidized lead ...

US3827557A - Method of copper sulfide ore flotation ...

A novel flotation promoter used in the concentration of copper bearing ores for the efficient selective flotation of copper values, including chalcopyrite, with suppression of iron pyrites; the promoter comprising a sodium sulfate of an aliphatic hydrocarbon having a carbon chain in excess of 12 carbons and chemically combined with at least one mole of the C2-C3 alkylene oxides.

Sulfidisation Promotion Effect of Ammonium Sulfate on ...

The sulfidisation promotion effect of ammonium sulfate is confirmed by pure copper oxide mineral flotation test and copper oxide ores flotation test, as well as by SEM images of floated malachite ...

(PDF) The effect of copper sulphate addition on the ...

The effect of copper sulphate addition on the recovery of chromite in the flotation of UG2 ore March 2003 Journal- South African Institute of Mining and Metallurgy 103(2)

Copper Sulfate and Other Copper Products

Technical Evaluation Report Copper Sulfate Crop Production January 20, 2011 Page 3 of 27 111 (CuSO 4 · 5H 2 O) granules, or powder, or crystals with bright blue color, and is hygroscopic2 (Merck, 1960; 112 MSDS-Copper Sulfate 1; Hebert, 1993).

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