copper sulfide ores

The Challenges and Prospects of Recovering Fine Copper …

The copper concentrates from sulfide ores are usually produced by flotation and then processed by pyrometallurgical or hydrometallurgical methods to extract the copper [3,9,10]. Froth flotation is widely used to separate sulfide minerals from gangue minerals such as quartz (SiO 2 ), based on the surface properties of minerals.

Mineralogy of Sulfides | Elements | GeoScienceWorld

Pyrite is the dominant sulfide in porphyry copper deposits, though it is chalcopyrite that is the most important ore mineral, along with bornite and various binary copper sulfides. ... sphalerite and galena are found in predominantly sedimentary sequences. Sulfide ores in volcano-sedimentary sequences, such as those associated …

Metallic Sulfide Mining | Sierra Club

Metallic sulfide mining — also known as hard rock mining — involves extracting valuable metals, like copper or zinc, from sulfide ores, which are rocks and sediments that contain minerals bonded with sulfur ions. To reach these ores, miners deplete the area's groundwater by pumping it out and then excavate the site using drilling and ...

Full article: The Direct Leaching of Nickel Sulfide Flotation

Nickel sulfide ores are broadly classified into the following categories: massive sulfide ore, matrix ore (also termed net-textured ore) ... Flotation practice in Russia and Canada differs from Western Australia where the deposits tend to be massive copper-nickel sulfide ores. In these ores, pyrrhotite is the major gangue mineral and …

Bioleaching of low-grade copper sulfide ores by

The grown conditions of Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans were investigated, and then experiments were conducted to research the bioleaching behaviors of crude ore of copper sulfide and hand-picked concentrates of chalcopyrite by Acidithiobacillus ferrooxidans and Acidithiobacillus …

12.3: Metals and Ores

Metal ores are generally oxides, sulfides, silicates (Table 12.3.1 12.3. 1) or "native" metals (such as native copper) that are not commonly concentrated in the Earth's crust, or "noble" metals (not usually forming compounds) such as gold (Figure 12.3.1 12.3. 1 ). The ores must be processed to extract the metals of interest from the waste rock ...

Analysis of Oxidation of Sulfide Minerals in Copper–Nickel

Abstract. The oxidation-induced alteration of properties of sulfide minerals is analyzed. The air-and-gas content and thermodynamic parameters of mine air are experimentally investigated as a case-study of blind roadways in sulfide deposits at a depth of 300–1500 m. The microclimate conditions of sulfide ore oxidation are determined and …

Copper Sulfide Ore

The common route for turning copper sulfide ores into metal is high temperature oxidation of sulfides to produce an impure liquid copper. This is cast into slab-like anodes. …

Flotation of Copper Sulfide Ores

Flotation is a common mineral processing method used to upgrade copper sulfide ores; in this method, copper sulfide mineral particles are concentrated in froth, and associated gangue minerals are ...

Copper recovery from low-grade copper sulfides using …

Low grade copper sulfide ores are obtained from a copper mine, Fujian Province, China, which contain 0.04% free copper oxide, 0.06% primary copper sulfide, 0.64% secondary copper sulfide and 0.01% combined copper oxide. The Cu grade is 0.75%, and most copper are found in chalcopyrite, enargite and chalcocite according to …

Application of Sulfide Copper Ores Oxidizing Roasting

Sulfide ores and concentrates are treated predominantly by autogenic melting methods to matte [1,2,3,4].The achievements of this technology are: implementation of the energy potential of mineral raw material; a combination of oxidation firing and melting processes; an increase in valuable metal content in matte; a reduction in the scale of …

A fresh approach to sulfide ores

The traditional route for extracting copper from sulfide ores is smelting. Yet there is a growing case for leaching sulfides from lower grade ore bodies and especially for those ore bodies containing …

Sulfide Ore

If sulfide ores containing iron and copper are to be smelted, an understanding of both the iron and the copper systems is needed. Again, as in Figure 2.1.3 for the Cu–S–O system, the calculations are limited to oxidation by industrial oxygen so that the pressure of SO 2 will be about 1 atm., except where oxygen pressure is appreciable near ...

Gold and Silver Minerals in Sulfide Ore | Geology of Ore …

Abstract—Gold and silver are capable of forming stable natural compounds with different elements. For gold 36 minerals are known: 10 in the class "Native metals, intermetallic compounds" and 26 in the class "Sulfides (selenides, tellurides, arsenides, antimonides, bismuthides)." For silver, 194 minerals are registered in the MMA, …

The bioleaching of sulphide minerals with emphasis on copper …

The most successful copper heap leaching operations have been those processing copper oxides and secondary copper sulphides (Table 1).Chalcocite (Cu 2 S) is the main copper sulphide mineral mined at bioleaching operations. Some of the chalcocite heap operations began as oxide (chemical) leach operations and were converted to …

Copper Ore Types: Sulfides versus Oxides | Nasdaq

There are two main copper ore types of interest, copper oxide ores and copper sulfide ores. Both ore types can be economically mined, however, the most common source of copper ore is the sulfide ...

Dissolution kinetics and solubilities of copper

Therefore, differentiating between hypogene and supergene sulfide minerals in porphyry copper ores is crucial for resource estimation, downstream mineral processing and metallurgical extraction, as well as accurate assessment of potential environmental impacts. Our goal is to develop a cost-effective sulfide quantification alternative that ...

(PDF) Banded Sulfide–Magnetite Ores of Mauk Copper Massive Sulfide

The results of investigation of metamorphosed sulfide–magnetite ores from the Mauk deposit located within the Main Ural Fault at the junction of Tagil and Magnitogorsk massive sulfide zones are ...

In situ recovery of copper sulfide ores: Alternative process schemes

However, copper sulfide ores are normally located at greater depths and within a more consolidated rock, then its recovery by ISR will very likely require some type of pre-treatment of the rock for permeability improvement. Main options suggested for permeability stimulation technologies include hydraulic fracturing (up to 100 MPa), …

Leaching of a low-grade, copper–nickel sulfide ore. 1. Key …

This study was prompted by the disparate recoveries of nickel (>. 70%) and copper (< 20%) from a test heap of copper–nickel sulfide ore after about 200 days of leaching. Variables tested in bioleaching columns charged with a pyrrhotite-rich, chalcopyrite and pentlandite ore were acid pre-conditioning, inoculation and aeration.

Recent progress on research of molybdenite flotation: A …

To recover copper and molybdenum from their porphyry sulfide ores, several process flowsheets are applied, and two of them are shown in Fig. 1.[23, 24] As illustrated in Fig. 1 (a), [23, 25] the two-stage flotation flowsheet is the most widely adopted.In the first stage, copper and molybdenum sulfide concentrates are recovered …

(PDF) Flotation of Nickel-Copper Sulphide Ore

Froth flotation is widely used for concentration of base metal sulphide minerals in complex ores. One of the major challenges faced by flotation of these ores is the ever varying grade and mineralogy.

Current Status of Copper-Ore Processing: A …

The amount of copper in copper sand-stones and slates varies from 1 to 6%, in sulfide cop-per-nickel ores from 1.1 to 4.9%, in copper-pyrite ores from 0.1 to 3%, and in copper …

Hydrometallurgical Processing of Low-Grade Sulfide Ore …

The authors describe the opportunities of low-grade sulfide ores and mine waste processing with heap and bacterial leaching methods. By the example of gold and silver ores, we analyzed specific issues and processing technologies for heap leaching intensification in severe climatic conditions. The paper presents perspectives for heap …

Treatment of Mixed Sulfide Oxide Ores of Copper

Many of our largest copper deposits contain both sulfide and oxidized copper minerals. The large porphyry mines, with a total copper content of from 1.3 to 2.0 per cent., send to their mills ore with an oxide content of from 0.2 to 0.4 per cent. While the recoveries of the sulfide minerals are considered satisfactory, using modern flotation ...

Copper (Cu) Ore | Minerals, Occurrence » Geology …

Copper (Cu) ore is a naturally occurring mineral deposit that contains copper in varying concentrations. It is an important industrial metal that has been used by human civilizations for thousands of years due to …

A systematic review of sustainable gold extraction from raw ores …

Ester-modified xanthates have been used, with some success, to treat gold-containing oxide copper ores, using a sulphidization method. ... 2 − + F e 2 + Typically, in the case of sulphide ores, following pre-oxidation treatment with bio-oxidation or pressure oxidation, a high amount of Fe(III) ion can be found in the slurry, which can enhance ...

Copper Ore Types: Sulfides versus Oxides | Nasdaq

There are two main copper ore types of interest, copper oxide ores and copper sulfide ores. Both ore types can be economically mined, however, the most …

Flotation of copper oxide minerals: A review

However, copper oxide ores tend to have the characteristics of strong surface hydrophilicity, high combination rate, fine particle size, serious mud problems, and complex mineral composition [8], [9]. Therefore, it is difficult to recover copper oxide resources efficiently by conventional copper sulfide ore separation method.

LEACHING OF A ROASTED COPPER SULFIDE ORE

Sulphide ores of copper are insoluble in dilute sulphuric acid leaching solutions, but a very high extraction can be obtained if the copper ore is in the oxidized condition. The problem is to convert the sulphide into the oxide form. This can be done by giving the sulphide ore an oxidizing-sulphatizing roast.