process of copper sulfide

Copper processing - Roasting, smelting, and converting ...

The technology should be suitable for retrofits, e.g., the conversion of a copper heap leach, solvent extraction (SX) and electrowinning (EW) facility once the oxide and transition material is exhausted (Valkama, 2013). Throughout this paper, 'copper sulphides' describes both mixed copper–iron sulphides, such as

Copper Sulfide - an overview | ScienceDirect Topics

Any copper(I) oxide present will be converted into copper(I) sulfide during the smelting process because copper has a higher affinity for sulfur than it does for oxygen. for example: Cu 2 O + FeS → Cu 2 S + FeO. Impurities form a slag which floats on the surface and is easily removed. One of the reactions to remove iron impurities is shown below:

Effect of Roasting Temperature for Copper Leaching of ...

Sometimes, temperature and gas conditions can be maintained such that a mixed sulfide feed (for instance a feed containing both copper sulfide and iron sulfide) reacts such that one metal forms a sulfate and the other forms an oxide, the process is known as "selective roasting" or "selective sulfation".

Copper Extraction from Sulfide Ores - Latest Contents

This process is used for the extraction of copper from low grade sulfide ore. In this process, the crushed and ground ore in bulk (about 100,000 tons) is exposed to air and water in big tanks. The air in the presence of water gradually oxidizes copper and iron sulphides to their surphides. The process is completed in about one year.

One-Step Synthesis and Assembly of Copper Sulfide ...

Copper Sulfide Mining A peer-reviewed study of the track record of water quality impacts from copper sulfide mines found severe impacts to drinking water aquifers, contamination of farmland, contamination and loss of fish and wildlife and their habitat, and risks to public health.

Leaching of Primary Copper Sulfide Ore in Chloride-Ferrous ...

Sulfide mining, which is sometimes referred to as hard-rock mining, is the process of extracting trace amounts of copper, nickel and other metals from sulfide ores. When sulfide ore comes into contact with water or oxygen, a chemical reaction occurs and produces sulfuric acid, …

One-Step Synthesis and Assembly of Copper Sulfide ...

The delivery of a sulfide . precipitation process to the Pueblo Viejo gold mi ne in the Dominican Republic is one such example. ... process as copper sulphide.

Pyrometallurgy - Wikipedia

Larger seeds (8 nm), which were generated with relatively small amounts of oleic acid, resulted in the formation of hybrid copper sulfide-copper indium disulfide nanocrystals as intermediates in the growth process of the nanorods, while smaller seeds (4 nm) obtained with relatively large amounts of oleic acid were gradually converted to copper indium sulfide nanorods.

Copper Mining and Extraction Sulfide Ores

The sulfide material, known as matte, contains from 45 to 70 percent copper, depending on the particular process. Gangue minerals and oxidized impurities, including most of the iron, react with the flux and form a light, fluid layer of slag over the matte. A certain percentage of the volatile impurities, such as sulfur, is oxidized and leaves ...

12.3 Primary Copper Smelting

A hydrometallurgical process is provided for the recovery of molybdenum values from a molybdenum disulfide concentrate containing copper. The process comprises forming an aqueous slurry of finely divided molybdenum concentrate of carbonates and hydroxides of alkali metals, and pressure leaching the slurry in the presence of oxygen at an elevated temperature and pressure for a time sufficient ...

Innovations in Copper: Mining & Extraction: Producing ...

The Looping Sulfide Oxidation™ process greatly improves the energy balance in copper smelting, reducing net energy usage by as much as 13% (Figure 9). On-line slag treatment removes slag energy input requirements and allows for the removal of slag treatment furnaces, thus reducing these typical operating and capital costs.

Copper: smelting, producing and classification-Metalpedia

To characterize the process efficiency of copper sulfide precipitation in different reactors, fluid velocity field, species concentration distribution, and reaction rate distribution maps were acquired as simulation results. A two-factor designed set of boundary conditions was used to determine their effects on processing efficiency.

PROCESS FOR THE ELECTROLYTIC RECOVERY OF COPPER FROM …

Jun 28, 2017· "The researchers have engineered a process that has many of the key ingredients — it's a cleaner, scalable, and simpler one-step process for producing copper from sulfide ore." "Technologically, the authors appreciate the need to make the process more efficient while preserving the intrinsic purity of the copper produced," says ...

Copper Mining and Extraction: Oxide Ores

The process used to treat sulfide copper ores begins at the mine site, where the copper-bearing minerals are physically separated from the rest of the rock. The flow diagram below shows how the percentage of copper increases as the ore is refined, first physically by froth flotation, then chemically by smelting and finally electrolytic refining.

A new way of extracting copper | MIT News | Massachusetts ...

ROASTING OF SULFIDE MINERALS In addition to common metals like copper, lead, zinc, and nickel a number of other metals such as antimony, bismuth, cadmium, cobalt, mercury, and molybdenum occur as sulfide minerals. Sulfides are not reduced with the most widely used redu-cing agents, carbon and hydrogen, because the free energy change for the ...

(PDF) Leaching of Copper Sulphides - ResearchGate

What is claimed is: 1. A process for the separation of copper sulfide and, when present, metallic copper, from metallic lead entrained in a dross which comprises introducing the dross comprising copper sulfide and, when present, metallic copper, and metallic lead entrained therein into a vessel, introducing an alkali metal sulfide into said vessel, heating the resulting admixture of dross and ...

Process for recovering molybdenum and copper from sulfide ...

By the use of the SX/EW process, copper can now be extracted away from the iron and other impurities in solution and further purified and reduced to metallic metal by electrolysis without ever having to be melted. Further, through the use of biooxidation, it is now possible to leach many of the copper sulfide minerals present in the ore.

Copper Mining and Extraction: Oxide Ores

ROASTING OF SULFIDE MINERALS In addition to common metals like copper, lead, zinc, and nickel a number of other metals such as antimony, bismuth, cadmium, cobalt, mercury, and molybdenum occur as sulfide minerals. Sulfides are not reduced with the most widely used redu-cing agents, carbon and hydrogen, because the free energy change for the ...

Copper Smelting Chemistry Tutorial

This process is used for the extraction of copper from low grade sulfide ore. In this process, the crushed and ground ore in bulk (about 100,000 tons) is exposed to air and water in big tanks. The air in the presence of water gradually oxidizes copper and iron sulphides to their surphides. The process is completed in about one year.

Supergene sulfide enrichment | geology | Britannica

Mar 04, 2016· In this video I bubble Hydrogen Sulfide through a solution of Copper Sulfate to produce a precipitate of Copper Sulfide. DO NOT ATTEMPT THIS EXPERIMENT. HYDR...

Role of Copper Sulfide Seeds in the Growth Process of ...

1 Types of copper sulfide ore (1) Single copper mineral Its ore characteristic is relatively simple, and the only useful component that can be recycled is copper. The gangue minerals are mainly quartz, carbonate and silicate. (2) Copper-sulfur ore Called copper-bearing pyrite. In addition to copper minerals, iron sulfide can be recovered, and the main mineral of sulfur is pyrite.

ROASTING OF SULFIDE MINERALS

Most of the copper ores mined in the United States contain only about 1.2-1.6% copper by weight. The most common sulfide ore is chalcopyrite, CuFeS 2, also known as copper pyrite or yellow copper ore. Chalcocite, Cu 2 S, is another sulfide ore. Cuprite, or red copper ore, Cu 2 O, is an

(PDF) Leaching of Copper Sulphides - ResearchGate

The sulfide material, known as matte, contains from 45 to 70 percent copper, depending on the particular process. Gangue minerals and oxidized impurities, including most of the iron, react with the flux and form a light, fluid layer of slag over the matte. A certain percentage of the volatile impurities, such as sulfur, is oxidized and leaves ...

US4033761A - Process for the separation of copper sulfide ...

Any copper(I) oxide present will be converted into copper(I) sulfide during the smelting process because copper has a higher affinity for sulfur than it does for oxygen. for example: Cu 2 O + FeS → Cu 2 S + FeO. Impurities form a slag which floats on the surface and is easily removed. One of the reactions to remove iron impurities is shown below:

copper extraction and purification - chemguide

The process used to treat sulfide copper ores begins at the mine site, where the copper-bearing minerals are physically separated from the rest of the rock. The flow diagram below shows how the percentage of copper increases as the ore is refined, first physically by froth flotation, then chemically by smelting and finally electrolytic refining.

(PDF) Looping Sulfide Oxidation ™ Process for Anode Copper ...

Copper is produced in the U. S. primarily by pyrometallurgical smelting methods. 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

Process for the separation of copper sulfide from metallic ...

Copper extraction from primary copper sulfide ore from a typical porphyry copper deposit from Antofagasta, Chile, was investigated after leaching with a chloride-ferrous media at two temperatures. The study focused on whether this chemical leaching system could be applied at an industrial scale. Leaching tests were conducted in columns loaded with approximately 50 kg of agglomerated ore; the ...

Role of Copper Sulfide Seeds in the Growth Process of ...

Jun 05, 2002· A simple organic amine-assisted hydrothermal process has been proposed to simultaneously realize the synthesis and assembly of copper sulfide nanoparticles at low temperature (90 ∼ 110 °C). Nanowire-like aggregates (average diameter of 120 nm and length of 2 μm) assembled by digenite phase copper sulfide nanoparticles have been synthesized with triethylenediamine (TEDA) …

Process for the separation of copper sulfide from metallic ...

leaching process has achieved a better economic result. In the present study the leaching of oxide-sulfide copper ore was considered, and a modification of the existing process was performed by inserting the leach-ing process between the ore milling and the flotation sections. Therefore, a higher overall efficiency of the

Copper Sulfide Flotation - Mineral Processing & Metallurgy

In recent years, more and more pyrometallurgy methods have been developed,such as the silver method, Noranda process, Japan's mitsubishi process etc. Source: Metals: Scarce: Base - Copper Production: Ore Processing: Sulfide Ore- Smelting-- Web Gallery

Acid leaching of oxide–sulfide copper ore prior the ...

Sulfide Mining. Mining is the method of tacking materials from the earth to get valuable metal ores like copper, zinc, and lead, which are known as target minerals in mining terms.

Copper Extraction from Sulfide Ores - Latest Contents

Copper and indium sources were added together in the presence of oleylamine and oleic acid. Changing the amount of oleic acid present in the reaction solution influenced the reactivity of the monomers, and consequently, the size of copper sulfide seeds formed in situ after the injection of tert-dodecanethiol, serving as the source of sulfur.

Copper Mining and Extraction Sulfide Ores

The delivery of a sulfide . precipitation process to the Pueblo Viejo gold mi ne in the Dominican Republic is one such example. ... process as copper sulphide.

Copper Sulfide Mining - Earthworks

Copper Sulfide Flotation Circuit Beneficiation of Copper Sulfide by Flotation Copper, due to the present world demand and price, is of foremost interest to the mining industry. Many new properties are either in the process of being brought into production or are

Copper Mining and Extraction: Oxide Ores

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 ...

Sulfide Mining, Mining Methods, Techniques, Copper, Zinc ...

The process of the present invention comprises introducing the dross comprising copper sulfide in the presence or absence of metallic copper, and metallic lead entrained or occluded in the dross,...

Mining Industry | Copper Sulfide Ore and Flotation Process ...

The process used to treat sulfide copper ores begins at the mine site, where the copper-bearing minerals are physically separated from the rest of the rock. The flow diagram below shows how the percentage of copper increases as the ore is refined, first physically by froth flotation, then chemically by smelting and finally electrolytic refining.

The Threat of Sulfide Mining — Friends of the Boundary ...

According to different mineral types, there are different technological methods. Almost all copper sulfide ores have sulfides containing iron, so in a sense, the flotation of copper sulfide minerals is essentially the separation of copper sulfide and iron sulfide. Whole set of copper ore processing equipment.

Copper processing - Roasting, smelting, and converting ...

Jun 05, 2002· A simple organic amine-assisted hydrothermal process has been proposed to simultaneously realize the synthesis and assembly of copper sulfide nanoparticles at low temperature (90 ∼ 110 °C). Nanowire-like aggregates (average diameter of 120 nm and length of 2 μm) assembled by digenite phase copper sulfide nanoparticles have been synthesized with triethylenediamine (TEDA) …

How copper is made - material, used, processing, steps ...

b) Formation of blister copper by reduction of copper sulfide: Cu 2 S(l) + O 2 (g) → 2Cu(l) + SO 2 air blister copper gas Stage 6: Anode casting. The blister copper produced by this process is 99% pure copper.