metallic sulfide ores

Sulfide Ores - an overview | ScienceDirect Topics

Complex sulfide ores are fine-grained, intimate associations of chalcopyrite (CuFeS2 ), sphalerite (ZnS) and galena (PbS), disseminated in dominant pyrite, and containing valuable amounts of minor elements. Generally, collectors employed for sulfide recovery are of …

Microbes and mineral recovery: Bioleaching of copper, gold ...

Bioleaching is the extraction of a metal from sulfide ores or concentrates using materials found native to the environment. Bioleaching is the commercialization of the ability of certain bacteria and archaea, found in nature, to catalyze the oxidation of sulfide minerals. The leaching of sulfide …

Sulfide - Wikipedia

Many important metal ores are sulfides. Significant examples include: argentite (silver sulfide), cinnabar (mercury sulfide), galena (lead sulfide), molybdenite (molybdenum sulfide), pentlandite (nickel sulfide), realgar (arsenic sulfide), and stibnite (), sphalerite (zinc sulfide), and pyrite (iron disulfide), and chalcopyrite (iron-copper sulfide). Corrosion induced by sulfide

sulfide ore beneficiation

[randpic] Sulfide Ore - an overview ScienceDirect Topics Beneficiation of complex base metal sulfide ores is based on selective production of individual clean concentrates of copper, zinc, and lead. Sphalerite flotation through copper act [email protected] +86 0371 8654 9132 ...

Metal Sulfides - an overview | ScienceDirect Topics

Metal sulfides are characterized by lower thermodynamic stabilities in comparison with those of corresponding oxides. 2, 7, 8 Thus, the dissociation pressures of sulfides are much higher and do not differ so significantly as in the case of metal oxides 9 (Table 20.1).Another feature of transition metal sulfides which distinguishes them from oxides is their lower melting points 6, 7, 10 (Table ...

Sulfide Mining | Minnesota Center for Environmental Advocacy

Sulfide-ore mining for copper and nickel, however, has never been attempted here. In the case of PolyMet, MCEA has led the fight for accountability and true science-based decision-making. MCEA lawyers and experts have time and again cast light on the flaws inherent in the PolyMet proposal, first in the environmental review and permitting ...

The cuprex metal extraction process: Recovering copper ...

10%· The Cuprex™ metal extraction process produces cathode-grade copper using a hydrometallurgical process based on chloride leaching of sulfide ore concentrates. The process incorporates several novel steps to overcome the major problems associated with earlier chloride-based processes, including mild leaching conditions using ferric chloride as leachant and solvent extraction …

US3425550A - Flotation separation of metallic sulfide ores ...

sulfide ores metallic sulfide dithiocarbamate collector Prior art date 1966-07-22 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US567088A Inventor Robert E Baarson ...

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

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. Metal ores like copper, zinc and lead are minute quantities contrasted to the whole composition of the earth.

Metals Extraction from Sulfide Ores with Microorganisms ...

Jan 02, 2019· 10%· Metal recovery from metal sulfide ore is carried out by chemolithotrophic bacteria like Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans. The same is done by heterotrophic microorganisms in non-sulfide ores. Additionally, for gold and copper extractions, bioleaching is used to extract cobalt, zinc, nickel, and uranium from low ...

Small Scale Treatment of PM Sulfide Ores - Gold Refining ...

Feb 15, 2020· There is no one universal way of treating sulfide rich precious metal ores - in the mineral kingdom there are all sorts of complex minerals which contain, in addition to gold or silver, complex combinations of lead, zinc, copper, iron, nickel, manganese, …

Sulfide Minerals - ThoughtCo.com

Jul 01, 2017· The sulfide mineral specimens you see in rock shops come from the deep levels of mines, and most display a metallic luster. Bornite (Cu 5 FeS 4)is one of the lesser copper ore minerals, but its color makes it highly collectible. (more below) Bornite stands out for the amazing metallic blue-green color it turns after exposure to the air.

Copper Mining and Extraction Sulfide Ores

The smelter for sulfide ores produces sulfur dioxide gas. This is scrubbed from the flue gases to make sulfuric acid for leaching copper from oxide ores. Scrubbing sulfur dioxide also protects the environment. For example: FeO(s) + SiO 2 (s)→ FeO.SiO 2 (slag) This is …

Sulfide Ore | Article about Sulfide Ore by The Free Dictionary

Sulfide Ore. any of several natural mineral formations consisting of metal sulfides. Metal selenides, tellurides, arsenides, and antimonides are also classified among the sulfide ores. Sulfide ores are an important source for the production of Ni, Co, Cu, Zn, Pb, Mo, Bi, Sb, and Hg. They contain not only sulfides but also other minerals ...

What is Sulfide Mining? | Mining Action Group

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 ...

The Mineral Gallery - Sulfides Class

The Sulfide Class minerals comprise an economically important class of minerals. Most major ores of important metals such as copper, lead and silver are sulfides. Strong generalities exist in this class. The majority of sulfides are metallic, opaque, generally sectile, soft to average in hardness and they have high densities, black or dark-colored streaks, and an igneous origin.

Poly-metallic sulfide ore analysis | Rigaku Global Website

Jun 24, 2019· Poly-metallic sulfide deposits are often major sources of copper, zinc, lead, gold and silver ore. Some of these deposits also contain many various metals such as co- or by-products and impurities. Laboratories in mining sites are often required to analyze large number of samples per day. Therefore, in order to determine multiple elements in ores, simple and fast analysis technique with …

Metallic Deposits - CliffsNotes

Metallic ores occur in every kind of rock and some varieties of soil. The metallic minerals are concentrated into rich masses by igneous, hydrothermal, or erosional/weathering processes. Metals such as chromium, platinum, nickel, copper, and iron can precipitate as sulfide …

Rebellious Ores: Sulfides, Selenides and Tellurides

Rebellious Ores: Sulfides, Selenides and Tellurides. The early day miners feared it, and it happened a lot more often than they would have liked: the easily worked rich surface ores they discovered on the surface gave way as they mined downward, to a vein full of sulfides, base metals and other nasty, rebellious and refractory ores.

Direct smelting process for non-ferrous metal sulfide ores ...

In the direct smelting of materials which contain non-ferrous metal sulfides, such as concentrates or ores of lead, copper, zinc, nickel, cobalt, or mixtures thereof, a roasting reduction and smelting are effected at the same time in a reactor to produce either the metal or a …

EXTRACTING METALS FROM SULFIDE ORES

EXTRACTING METALS FROM SULFIDE ORES. Many important metals are present in nature combined with sulfur as metal sulfides; these include cadmium, cobalt, copper, lead, molybdenum, nickel, silver, and zinc. In addition, gold and platinum group metals are associated with sulfidic base metal ores. The extraction of metals from their ores has been an ...

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 ...

Poly-metallic sulfide ore analysis | Rigaku Global Website

Poly-metallic sulfide deposits are often major sources of copper, zinc, lead, gold and silver ore. Some of these deposits also contain many various metals such as co- or by-products and impurities. Laboratories in mining sites are often required to analyze large number of samples per day. Therefore, in order to determine multiple elements in ores, simple and fast analysis technique with high ...

Mineralogy of Sulfides - Elements

Apr 01, 2017· Metal sulfides are the most important group of ore minerals. Here, we review what is known about their compositions, crystal structures, phase relations and parageneses. Much less is known about their surface chemistry, their biogeochemistry, or the formation and behaviour of 'nanoparticle' sulfides, whether formed abiotically or biogenically.

GeoMan's Mineral Identification: Metallic

Common secondary mineral in rocks and soils. An important ore of iron. LIMONITE. Red brown to Indian red. 1 to 6.5. Steel gray. S.G. 4.8 to 5.3. Many forms and lusters (can also occur in sub-metallic to non-metallic forms). Can be massive, radiating, botryoidal, and micaceous.

How can metal mining impact the environment? | American ...

If sulfide minerals are present in these rocks, especially pyrite, the sulfides can oxidize and cause acid rock drainage. Acid seepage from tailings. Tailings produced from the milling of sulfide ores — primarily copper, lead, and zinc ores — may have concentrations of …