metallic sulfide ores

A Novel Approach for Metal Extraction from Metal Sulfide ...

Request PDF | A Novel Approach for Metal Extraction from Metal Sulfide Ores with NH4Cl: A Combined DFT and Experimental Studies | Chalcocite (Cu2S) is …

Metallic Sulfide Mining | Sierra Club

What is metallic sulfide mining? 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 ...

US3425550A - Flotation separation of metallic sulfide ores ...

sulfide ores metallic sulfide dithiocarbamate collector Prior art date 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 ...

Matte | metallurgy | Britannica

Matte, crude mixture of molten sulfides formed as an intermediate product of the smelting of sulfide ores of metals, especially copper, nickel, and lead.Instead of being smelted directly to metal, copper ores are usually smelted to matte, preferably containing 40–45 percent copper along with iron and sulfur, which is then treated by converting in a Bessemer-type converter.

Sulfide Oxidation - Metallurgist & Mineral Processing Engineer

Apr 08, 2018· Sulfide Oxidation. The first leaching step is the release of trace metals from the mineral phase due to sulfide oxidation. Sulfate was the ultimate reaction product in both the laboratory and the field, a result of the pH and oxidizing conditions which prevailed, and the relatively long reaction time. The rate of sulfide oxidation observed in ...

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.

Sulfide Ore | Article about Sulfide Ore by The Free Dictionary

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased. 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 ...

US10413914B2 - Enrichment of metal sulfide ores by oxidant ...

Apr 08, 2021· US10413914B2 US14/374,526 US201314374526A US10413914B2 US 10413914 B2 US10413914 B2 US 10413914B2 US 201314374526 A US201314374526 A US 201314374526A US 10413914 B2 US10413914 B2

Sulfide Mining | Sierra Club

Metallic sulfide mining is a type of mining never before permitted in the land of 10,000 lakes. The mining of copper/nickel sulfide ores is a toxic type of mining that is risky to our environment, our workers and communities, and local economies. Mining sulfide rock releases acid and toxic metals and contaminants that pollute rivers and ...

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 ...

Metal Sulfide Reactions - Chemistry LibreTexts

However, since pyrite is the most common and most widely studied metal sulfide, it is useful to review the chemistry of pyrite as a starting point for understanding arsenopyrite and other metal sulfides. In both pyrite and arsenopyrite, the oxidation states of the elements in the minerals are Fe 2+, S 1− and As 1−. The iron is released in ...

ROASTING OF SULFIDE MINERALS - Wiley Online Library

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 ...

Flotation experiment research on a polymetallic sulfide ore of

Ore structure:The metal sulfide ores show idiomorphic, hypidiomorphic, or structure-dependent grains. The pyrite particles were the coarsest, followed by that of galena, sphalerite, and chalcopyrite. The metal minerals from the early formation (mainly pyrite) were broken into the size of breccia and formed a cataclastic texture when stress was

Poly-metallic sulfide ore analysis | Rigaku

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 ...

Sulfide Minerals: Definition, Properties & Examples ...

Molybdenum sulfide is the principal ore mineral to obtain molybdenum, a metal commonly used in alloys like stainless steel. This sulfide has a dark gray, metallic appearance and is very soft which ...

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

DESCRIPTION. This invention relates to a continuous process of directly smelting materials which contain non-ferrous metal sulfides. 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 ...

Sulfide Ores - an overview | ScienceDirect Topics

13.5 Heap Leaching of Nickel Sulfide Ore. An alternative to intensifying the rate of leaching of concentrates is to heap leach the whole ore. This has the significant advantage of eliminating the concentration of the sulfides, which is the step that has the lowest recovery on route from ore to metal.

Metal-sulfide mineral ores, Fenton chemistry and disease ...

Jul 10, 2014· @article{osti_1281142, title = {Metal-sulfide mineral ores, Fenton chemistry and disease. Particle induced inflammatory stress response in lung cells}, author = {Harrington, Andrea D. and Smirnov, Alexander and Tsirka, Stella E. and Schoonen, Martin A. A.}, abstractNote = {The inhalation of mineral particulates and other earth materials, such as coal, can initiate or enhance disease in humans.

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 …

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.

Sulfide Ore Processing « TCB Metals and Refining

Instead of relying on autoclaves or roasting to prepare a sulfide ore for traditional leaching, our vibratory grinder on our circuit allows our leach to make contact with the precious metal encapsulated in the sulfide so leaching can occur. With the aggressive nature of our leach allowing us to process most ores in an hour, our process allows ...

Metallic Minerals Copper Ore Processing

Copper ore, other minerals, waste rock (gangue) Copper minerals, iron and other metallic pyrites, byproducts, and gangue Same as mining but in the form of fine particles Copper minerals, iron pyrites, miscellaneous minerals (including valuable byproducts), and water (8-10 ) Copper sulfide (CU2S), iron sulfide (FeS), byproducts, tramp elements ...

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.

Photos of gold ores, quartz, telluride gold ore and gold ...

Normally even good, rich gold ore has no gold metal which is visible to the naked eye. The photo at left shows small particles of metallic gold in quartz taken from the mountains of Canada. Sections of gray colored quartz in the specimen have this appearance because of the finely disbursed sulfide crystals present in this ore.

Sulfide Minerals - ThoughtCo

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.

Poly-metallic sulfide ore analysis | Rigaku Global Website

Minerals | Free Full-Text | Massive Sulfide Ores in the ...

The Iberian Pyrite Belt (IPB) is recognized as having one of the major concentrations of volcanogenic massive sulfide (VMS) deposits on Earth. Original resources of about 2000 Mt of massive sulfides have been reported in the province. Recent classifications have considered the IPB deposits as the bimodal siliciclastic subtype, although major differences can be recognized among them.

Distribution of PGE and PGM in Oxidized Ores of the Main ...

sulfide disseminations of the Main Sulfide Zone (MSZ). Pristine, sulfide-bearing MSZ ores are mined underground (Mimosa mine) or from surface (Ngezi mine). Near-surface oxidized MSZ ores have a large potential at an estimated resource of 400 Mt of ore (Prendergast 1988). However, all previous attempts to extract the PGE from this ore

Significant Known Metallic Mineral Deposits in Maine

Significant Known Metallic Mineral Deposits in Maine including approximate tonnage and grade1 Northern Maine belt (in alphabetical order) *Alder Pond - 3.4 MT massive sulfide, of which 0.8 MT grades 2-3% copper, 9-17% zinc,

9.2. - Caveman Chemistry

Sulfide ores must be roasted to remove sulfur. In roasting, the ore is heated in an oxidizing atmosphere. Sulfides are oxidized by the oxygen in the air and the sulfur combines with oxygen, the bejeezus coming off as sulfur dioxide gas as shown in Equation 9-2. What remains are metal oxides, which may be smelted with charcoal as previously ...

Sulfide Ore - an overview | ScienceDirect Topics

K.A. Natarajan, in Biotechnology of Metals, 2018 Bacterial Depyritization of Sphalerite and Galena. 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 activation becomes complicated when other minerals such as pyrite can get inadvertently activated.

Sulfide mineral - Wikipedia

The sulfide minerals are a class of minerals containing sulfide (S 2−) or disulfide (S 2 2−) as the major anion.Some sulfide minerals are economically important as metal ores.The sulfide class also includes the selenides, the tellurides, the arsenides, the antimonides, the bismuthinides, the sulfarsenides and the sulfosalts. Sulfide minerals are inorganic compounds

Sulphide Leaching - Mineral Processing & Metallurgy

Jun 24, 2015· Copper sulphate can be used to separate Copper from Nickel in a sulphide ore or Copper from Fe in Cu -Fe sulphide ore. CuSO 4 solution can also be used for removing Pb, Zn, and Fe from copper sulphide ores. In presence of oxidizing agents: Ferric ion: Ferric sulphate or chloride react with metal sulphides liberating elemental sulphur, e.g.

The Beneficiation Process of Tin-containing Polymetallic ...

Jun 03, 2021· cassiterite; There are many types of minerals in tin-containing polymetallic sulfide ores. In addition to cassiterite, the main metal minerals include sphalerite, galena, chalcopyrite, pyrite, pyrrhotite, arsenopyrite, etc. Common gangue minerals include quartz, calcite, feldspar, tourmaline, and …

The cuprex metal extraction process: Recovering copper ...

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 of copper usinga ...

metallic sulfide ores

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