sulfide ore molybdenite


Effect of copper ions on the flotation separation of ...


1. Introduction. Copper minerals and molybdenum minerals have closely paragenic relationships, and approximately half of molybdenum production comes from Cu-Mo sulfide ores as a by-product (Hirajima et al., 2014).Porphyry copper deposits are one of the primary resources for the extraction of copper and molybdenum, in which chalcopyrite and molybdenite are the dominant valuable minerals.

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Sulfide Minerals - thoughtco.com


Galena forms in low- and medium-temperature ore veins, along with other sulfide minerals, carbonate minerals, and quartz. These can be found in igneous or sedimentary rocks. It often contains silver as an impurity, and silver is an important byproduct of the lead industry.

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Pelletizing of sulfide molybdenite concentrates - ResearchGate


Pelletizing of sulfide molybdenite concentrates. ... (PN) and sodium trithiocarbonate (ST), and their mixtures on galena, chalcopyrite and other sulfide ores, was examined in turn by changing the ...

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MOLYBDENUM DEPOSITS - USGS


Molybdenite is by far the most widely distributed molybdenum mineral, occurs in the greatest quantity in individual deposits, and is the molybdenum mineral in most of the ore produced. It is found in quartz veins, either as an original constituent or as a

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Review of the flotation of molybdenite. Part I: Surface ...


Mar 10, 2016· This paper reviews the surface chemistry and floatability of molybdenite, usually by-product in Cu/Mo sulfide ores. • Oil collectors are used to improve molybdenite flotation and the comparison with thiol collectors is discussed. • Some inorganic ions are strong molybdenite depressants, such as, calcium ions and lime. •

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Molybdenum Ore Reserves - imoa.info


Molybdenum occurs in nature only in chemical combination with other elements. A number of molybdenum-bearing minerals have been identified, but the only one of commercial significance is molybdenite (MoS 2) - a natural molybdenum sulfide.In ore bodies, molybdenite is generally present in quantities from 0.01-0.25% and is often associated with the sulfide minerals of other metals, notably …

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Molybdenum Ore Processing by Flotation


Molybdenum Ore Processing by Flotation. How to separate copper & molybdenum; the problem. Molybdenum is found in small amounts in practically all low grade porphoritic copper ores. It is usually present as the sulphide, molybdenite, which is readily recovered in the copper flotation concentrate. Copper sulphide flotation concentrates may ...

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Molybdenite - Wikipedia


Molybdenite is an important ore of molybdenum, and is the most common source of the metal. While molybdenum is rare in the Earth's crust, molybdenite is relatively common and easy to process, and accounts for much of the metal's economic viability. Molybdenite is purified by froth flotation, and then oxidized to form soluble molybdate ...

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Mineralogy of Sulfides - Elements


Mineralogy of Sulfides. INTRODUCTION. Sulfide minerals are compounds in which sulfur is combined as an anion with a metal (or semi-metal) cation or cations. The definition is commonly widened to include minerals in which the anion is As or Sb, sometimes together with S, and to include Se and Te minerals. The sulfosalts are a

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Molybdenite: Mineral properties, uses, geologic occurrence


Molybdenite is a rare mineral composed of molybdenum and sulfur. It is the primary ore of molybdenum, with important amounts of rhenium sometimes produced as a byproduct. Molybdenite is also used as a solid lubricant to reduce friction between sliding metal parts.

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Effect of Sodium Sulfite on Floatability of Chalcopyrite ...


Sodium hydrogen sulfide (NaHS) is commonly used as a copper depressant in the selective flotation of copper and molybdenum ores. However, the process is facing health and safety issues because ...

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Molybdenum | Minerals Education Coalition


The U.S. produces significant quantities of molybdenite. The major producers of molybdenum in 2013 were China, the USA, Chile, Peru, Mexico, and Canada. Relation to Mining. Molybdenum occurs as the principal metal sulfide in large low-grade porphyry molybdenum deposits and as an associated metal sulfide in low-grade porphyry copper deposits.

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Effects of pH and pulp potential on selective separation ...


copper sulfide ore as a trace mineral [1-4]. Because of large differences between the surface properties of molybdenite and other sulfides, molybdenite can be recovered from Cu–Mo ores as a by-product with copper at levels as low as 0.01% Mo. Approximately half of the world's

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Selective flotation separation of molybdenite and talc by ...


PDF | Humic acid (HA) has been studied as a potential selective depressant for molybdenite in the flotation separation of molybdenite and talc in this paper. In the single mineral flotation tests ...

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US5068028A - Molybdenite flotation from copper sulfide ...


A process for recovering molybdenite from feed materials containing copper sulfide and molybdenite (e.g. copper/molybdenum concentrates from flotation processes) wherein the feed material is treated with ozone and then floated to recover molybdenite.

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Effect of sodium sulfide waste water recycling on the ...


sulfide ore by creating hydrophilic films and have the effect of reagents removal via competitive adsorption (Abeidu et al., 1978). It is announced that sodium sulfide is very extensive in the ... In the selective flotation of molybdenite and chalcopyrite, sodium sulfide was used as a depressor for chalcopyrite (Wada et al., 1962; Peng et al ...

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Molybdenite (MoS2) Mineral - Reade Advanced Materials


Functions as a boundary lubricant. It is insoluble in water and dilute acids. Molybdenite is the inorganic compound with the formula MoS2. This black crystalline sulfide of molybdenum occurs as a mineral. It is the principal ore from which molybdenum metal is extracted.

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OPTIMIZATION OF FLOTATION PARAMETERS FOR …


frother, and sodium sulphide as depressant at pH 12 were found to be optimum parameters for the flotation of molybdenite ore. Meanwhile, the kinetics of batch flotation behavior of the molybdenum ore was obtained by applying the first order and second order kinetics models. The results indicated that the

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Molybdenite - definition of molybdenite by The Free Dictionary


Define molybdenite. molybdenite synonyms, molybdenite pronunciation, molybdenite translation, English dictionary definition of molybdenite. ... A mineral form of molybdenum sulfide, MoS2, that is the principal ore of molybdenum. n a soft grey mineral consisting of molybdenum sulphide in hexagonal... Molybdenite - definition of molybdenite by ...

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Sulfide minerals - Wikipedia


The sulfide minerals are a class of minerals containing sulfide (S 2−) or persulfide (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, …

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MOLYBDENUM ORE - Nevada Outback


Molybdenum is a rare element occurring chiefly as the sulphide, molybdenite.More rarely wulfenite or powellite may serve as an ore. Molybdenum does not occur in a free state in nature, but may be prepared from its sulfide (molybdenite) direct in the electric furnace, or by the reduction of its oxide by means of carbon, or by the Thermite process.

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Molybdenite Flotation - 911metallurgist.com


The existence of the latter type in the ore was confirmed in March, 1980, when there were problems with the xanthate system. The amount of molybdenite in both the sand and slime tailings jumped approximately 50%. As soon as the xanthate system returned to normal, the molybdenite in the tailings decreased to a normal level.

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What is the difference between molybdenite and molybdenum ...


Molybdenite is a related term of molybdenum. As nouns the difference between molybdenite and molybdenum is that molybdenite is (mineralogy) a mineral, molybdenum disulfide mo]][[sulfur|s 2, that is the principal ore of molybdenum; it is structurally similar to graphite and has a similar look and feel while molybdenum is a metallic chemical element (symbol mo) with an atomic number of 42.

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Pentlandite - Wikipedia


The pentlandite-chalcopyrite-pyrrhotite ore around the Sudbury Structure formed from sulfide melts that segregated from the melt sheet produced by the impact. Hydrogen catalysis. Pentlandite is a catalyst for production of hydrogen and oxygen from water using electricity.

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US2664199A - Flotation recovery of molybdenite - Google ...


US2664199A US306638A US30663852A US2664199A US 2664199 A US2664199 A US 2664199A US 306638 A US306638 A US 306638A US 30663852 A US30663852 A US 30663852A US 2664199 A US2664199 A US 2664199A Authority US United States Prior art keywords concentrate molybdenite flotation copper iron Prior art date 1952-08-27 Legal status (The legal status is an assumption and is …

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Sulfide - Wikipedia


Sulfide (British English also sulphide) is an inorganic anion of sulfur with the chemical formula S 2− or a compound containing one or more S 2− ions. Solutions of sulfide salts are corrosive. Sulfide also refers to chemical compounds large families of inorganic and organic compounds, e.g. lead sulfide and dimethyl sulfide.

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1 J.W. Blossom, Molybdenum, from Minerals Yearbook …


Molybdenite is recovered from either primary molybdenite or copper sulfide ore by flotation, after the ore has been crushed and ground to a suitable size. Several stages of grinding and reflotation concentrate the molybdenite in the primary ore to a 90 to 95 percent purity concentrate.4 The remainder of the concentrate is primarily silica.5 Copper,

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EFFECT of Pb2+ on the flotation of molybdenite in the ...


Molybdenite is the most important material for the production of molybdenum, . Like other anisotropic mineral, molybdenite presents two distinct surfaces, strongly hydrophobic faces and strongly hydrophilic edges, . Molybdenite exhibits strong hydrophobicity and is usually concentrated by froth flotation.

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MOLYBDENITE (Molybdenum Sulfide) - Amethyst Galleries


Molybdenite is a very soft metallic mineral. It can be easily confused with graphite, but not with many other minerals. Graphite has a darker black-silver color and a black-gray to brown-gray streak, whereas molybdenite has a bluish-silver color and streak. Unfortunately, the difference is so slight that it is recommended that the two minerals be seen side by side.

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Molybdenite | Definition of Molybdenite at Dictionary.com


Molybdenite definition, a soft, graphitelike mineral, molybdenum sulfide, MoS2, occurring in foliated masses or scales: the principal ore of molybdenum. See more.

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