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Process for removing and recovering copper, silver and ...

A process for the removal and recovery of metals including copper, silver and zinc from a slurry of finely ground gold-bearing sulfide ores comprising: lixiviating said ores with a solution of sulfurated sulfite ions in the form of sodium or potassium salts of one or more of the following anions: S 2 O 3 =, S 2 O 6 =, S 3 O 6 =, S 4 O 6 =, S 5 ...

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US8163063B2 - Method of leaching copper sulfide ore with ...

An object of the present invention is to provide a method of efficiently leaching copper from a copper sulfide ore containing chalcopyrite or enargite as a main constituent under versatile conditions for actual operation. A method of leaching copper from a copper sulfide ore, characterized by comprising using, as a leaching solution, a sulfuric acid solution containing …

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copper mine gold by product concentratio

Copper production environmental impact 01/09/2021· At Chapada, cash costs are expected to approximate 1.60 /lb copper in 2022, after unencumbered gold by product credits. The foreccopper mine gold by product concentratio

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Chapter 6 Copper Production Technology

Copper Production Technology The last boomin technological innovation for the copper industry occurred in the first two dec-ades of this century, whenopen pit mining, flo- tation concentration,and the reverberatory smelter were adapted to porphyry copper ores. With the exception of leaching-solvent extrac-tion-electrowinning, the basic methods ...

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(PDF) The treatment of arsenic bearing ores, concentrates ...

For example, enargite is a common copper sulfide ore with high amounts of arsenic. The arsenic can cause environmental problems when the concentrate is processed at a smelter.

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sulphide ore of copper - thetipsypizza.com

Metallic sulfide mining (aka hard rock mining) is the practice of extracting metals such as nickel, gold and copper from a sulfide-rich ore body. Sulfides are a geologic byproduct of mining in this area, and by exposing sulfides to the air and water in our atmosphere, sulfuric acid can be created threatening to poison the nearby water ...

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8 Types of Gold Ore- Properties and Ways to Process | Fote ...

4. Gold sulfide ore Properties of gold sulfide ore Gold sulfide ore is the inorganic compound with the formula Au2S. It is the principal sulfide of gold and decomposes to gold metal and elemental sulfur, illustrating the "nobility" of gold. In nature, the covalent radii of gold sulfide and silver are similar, and the two will form a solid ...

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Treatment of a refractory gold—copper sulfide …

The gold dissolution rate of the gold ore could reach 94.3% and the thiosulphate consumption could be reduced to 1.12 kg/t ore in the thiosulphate gold leaching system containing 0.1 mol/L of sodium thiosulphate, 0.06 M ethanediamine, 0.005 M copper ion and 1.5 kg/t of CTAB and operated at a rate of agitation of 150 rpm.

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US20100242681A1 - Method for concentration of gold in ...

Disclosed herein is a method for concentrating gold contained in a leach residue obtained in a copper hydrometallurgical process for recovering copper from a copper sulfide mineral to efficiently separate and recover gold from the leach residue. According to the method, a gold-bearing copper sulfide mineral is subjected to pressure leaching with sulfuric acid at a …

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Copper Oxide Flotation - Mineral Processing & Metallurgy

Copper Oxide Flotation. Flotation of Oxide. Naturally Floating Gold. Flotation Without Sulphidizer. Compare Hydroxamate AM2 Rinkalore CTC3 Oxide Collectors. Oxide copper minerals generally do not respond well to traditional methods of concentration using known sulfide copper collectors. Their recovery in a froth flotation circuit requires ...

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12.3 Primary Copper Smelting

Pyrometallurgical techniques use heat to separate copper from copper sulfide ore concentrates. Process steps include mining, concentration, roasting, smelting, converting, and finally fire and electrolytic refining. 12.3.2 Process Description2-4 Mining produces ores with less than 1 percent copper. Concentration is accomplished at the

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Ore geology of the copper sulfide mineralization in the ...

Copper ore at Rudabánya. The copper content of the Rudabánya iron ore is a well-known feature since early times. Pantó estimated 0.15 wt% as the average Cu content of the primary siderite iron ore, mainly in the form of chalcopyrite with accessory bornite and tetrahedrite, unevenly enriched in the "spar edge."Koch et al. also described chalcopyrite (which substitutes …

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Copper Flotation - Mineral Processing & Metallurgy

Although basic porphyry copper flotation and metallurgy has remained virtually the same for many years, the processing equipment as well as design of the mills has continually been improved to increase production while reducing operating and maintenance costs. Also, considerable attention is paid to automatic sensing devices and automatic controls in order to …

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Speciation of noble metals and conditions of their ...

As follows from the results of rational analysis, the concentration of finely dispersed gold in sulfide ores from the studied deposits ranges from 0.8 to 5.0 ppm, i.e., is less than the bulk Au content in the respective samples (0.93–21.2 ppm).

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Method for processing gold-bearing sulfide ores involving ...

The present invention provides a method for processing a gold-bearing sulfide mineral material, such as a gold-bearing sulfide ore, to facilitate recovery of the gold from the mineral material. The method involves preparation of a flotation concentrate in a manner that reduces problems associated with conventional flotation.

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High gold concentrations in sulphide-bearing magma …

The concentration of Au in S-bearing melts of this study is ... and the origin of porphyry copper–gold deposits in island arcs. ... melts saturated …

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Gold Flotation Concentrate

Gold Flotation Process is use to process fine gold, high floatability of sulfide gold-bearing quartz veins ore, multi metal gold-containing sulfide ore and carbon-containing ore. Process Description

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sulfide vs oxide gold ores - stfrancishome.ch

Unreactive. metals. such as gold are found in the Earth's crust Copper mostly occurs as sulfide ores, which are heated in air to convert them to copper(II) oxide. (III) oxide is reduced to . Get Price; concentration of copper oxide ore. Concentration Of Copper Oxide Ore Processing. concentration of copper oxide ore processing.

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Effect of Pretreatment on Leaching Primary Copper Sulfide ...

Bas et al. [19] investigated the effect of an ammonia pretreatment before leaching copper sulfide-bearing gold ore to increase gold extraction …

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Hydrometallurgical Processing of Low-Grade Sulfide Ore …

gold-processing plants in Yakutia and Magadan region, Russia. Those parameters included: water retention capacity of gold- and silver-bearing materials, absorption of chemical agents, optimum solvent concentration, temperature impact, and metal recovery [17]. For the first time, the experiments

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Potential for New Nickel-Copper Sulfide Deposits in the ...

Potential for New Nickel-Copper Sulfide Deposits in the Lake Superior Region. Scientists from the U.S. Geological Survey are evaluating the potential for undiscovered sulfide deposits containing varying amounts of nickel, copper, platinum-group metals, and cobalt in the Lake Superior region as part of an ongoing effort to assess the mineral ...

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Roasting Solutions

SO2 gas concentration. ... The copper sulfide is transformed into water-soluble copper sulfate and the iron sulfide into insoluble ... and gold-bearing SULFIDE minerals Dead roasting is the most commonly used roasting process and is mainly applied in our zinc and pyrite roasters. When

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Treatment of a refractory gold—copper sulfide …

Treatment of a refractory gold-copper sulfide concentrate by copper ammoniacal thiosulfate leaching 625 TABLE 5 Calculated head grade and precious metals left in residues for varying copper (II) concentrations Copper (II) [Au] Au in % Au [Ag] Ag in % Ag in starting Calculated residue extracted Calculated residue extracted solution head (g/t ...

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Method of gold extraction from sulphide gold-bearing ores

The mass concentration of the leaching reagent 0.01 to 35% (the United Kingdom Patent No. 2180829, CL SW 11/04, 1987). The disadvantage of this method is that during the processing of hard gold-bearing raw materials extraction of gold is not high enough.

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Melting of Gold-Containing Concentrates with Copper ...

12%There is interest in melting tenacious gold-concentrates with osmium and rhenium slurries or cakes of copper production stored currently, having within their composition up to 64% lead in the form of sulfate, carbonate, sulfide, and oxide, up to 28.40 g/ton of rhenium, and up to 57 g/ton of osmium [].Within a charge, there is also sodium sulfate and …

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Effect of Pretreatment on Leaching Primary Copper Sulfide ...

The aim of this study was to improve the dissolution of copper sulfide ore composed mainly of chalcopyrite (1.21 wt %) and bornite (0.54 wt %) using a pretreatment before leaching. The effect of the pretreatment on copper sulfide dissolution was investigated using different types of leaching. Three sets of experimental tests were performed (flask, reactor and mini-column).

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Platinum group elements in gold-sulfide and base-metal ...

The concentration levels and distribution features of the platinum group elements (PGE) in quartz-sulfide and base-metal ores in deposits of the Sayan-Baikal Fold Region (SBFR) are discussed. Microfire assay neutron activation analysis (MF-NAA), which enables one to work on a nondestructive basis and allows one to avoid inaccuracies related to chemical …

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Quartz-Tourmaline Veins in the Northern Sierra Nevada Area

Quartz-Tourmaline Veins in the Northern Sierra Nevada Area Summer 1991. Tourmaline-bearing quartz veins and replacement deposits, commonly copper- and gold-bearing, are found in unusual concentration in northwestern Nevada and adjacent northeastern California in Triassic and Jurassic arc rocks and in the Cretaceous plutons that intrude them.

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EXTRACTING METALS FROM SULFIDE ORES

The copper was then stripped from the substrate and inserted into the electrolysis cell and copper deposited from a solution usually containing a concentration of 25 to 60 grams/liter (g/l) copper as copper sulfate and 50 to 180 g/l sulfuric acid, held at 50 to 60 o C (122-140 o F). Small quantities of a hydrocolloid such as Guar gum are ...

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Mineral Resources

The copper concentration in copper ore deposits has shown changes throughout history. ... they cool rapidly and precipitate mainly quartz, but also a variety of sulfide minerals, and sometimes gold, and silver within the veins of quartz. ... Iron Formations - These deposits are of iron rich chert and a number of other iron bearing minerals that ...

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Nitric Acid Leaching for Pre-Treatment of a Copper Bearing ...

The extraction of gold/silver from a copper-bearing pyritic gold concentrate (62 g/t Au, 110 g/t Ag and 0.3% Cu) in thiosulphate solutions was investigated in this study.

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The method of underground leaching copper sulfide ores

To ensure the required completeness and rate of leaching of copper and zinc from sulfide mineral raw materials we recommended to maintain the concentration of Fe 3+ in the range of 0.5-30 g/l, preferably 5-15 g/L. it is possible to provide an almost complete recovery of copper from bornite and chalcocite in a relatively short time process. When ...

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(PDF) Investigating of Nitric Acid Leaching of High-Sulfur ...

The optimum conditions for copper leaching from the middling were identified as sulfuric acid concentration at 103.74 g/L, nitric acid concentration at …

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