Origin of the Pd-Rich Pentlandite in the Massive Sulfide Ores of …
Pd-rich pentlandite (PdPn) along with ore-forming pentlandite (Pn) occurs in the cubanite and chalcopyrite massive sulfide ores in the EM-7 well of the Southern-2 ore body of the Talnakh deposit. PdPn forms groups of small grains and comprises marginal areas in large crystals of Pn. The palladium content in PdPn reaches up to 11.26 wt.%. …Web
اقرأ أكثرSulfide mineral | Definition, Examples, Identification, & Facts
sulfide mineral, any member of a group of compounds of sulfur with one or more metals. Most of the sulfides are simple structurally, exhibit high symmetry in their crystal forms, …Web
اقرأ أكثرSulphidisation of oxides and oxidised sulphides and
1. Introduction. The practice of froth flotation, a physico-chemical process based on exploiting differences in surface wettability to effect a separation between valuable and gangue minerals [1], presents the most economical and efficient enrichment method for ores in the mining sector.However, the ever increasing demand for metals and the …Web
اقرأ أكثرProgress in bioleaching: fundamentals and mechanisms of …
Non-contact leaching is basically exerted by planktonic microorganisms, which oxidize iron(II) ions in solution. The resulting iron(III) ions get into contact with a …Web
اقرأ أكثر12.3: 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 ...Web
اقرأ أكثرMagmatic origin for the massive sulfide ores in the
The CRMS-country rock contacts display lobate and cuspate pods of sulfide embaying the metamorphosed country rocks (Fig. 6d), and commonly show a gradational boundary of pure massive sulfide, inter-mixed sulfide and silicate, and silicate country rocks (Fig. 6f), which are similar to "emulsion textures" of sulfides from melt infiltration ...Web
اقرأ أكثر(PDF) Selective Neodymium Enrichment of Sulfides as a
The effect of enrichment with Nd in sulfides from magmatic Cu-Ni-PGE complexes and sulfide ores from hydrothermal Pb-Zn, Au-Mo, and gold deposits was found and characterized. This paper concerns ...Web
اقرأ أكثرKomatiites and nickel sulfide ores of the Black Swan area, Yilgarn
The Black Swan Ultramafic Succession hosts a number of magmatic Fe–Ni–Cu–PGE sulfide ore shoots, ranging from high grade massive ore to low grade disseminated sulfides. Of these, the most economically significant is the Silver Swan massive sulfide orebody, associated with the basal contact of the succession. The …Web
اقرأ أكثرSilicate-replacive high sulfidation massive sulfide orebodies in a
The Cu-Au deposit of Bor (Serbia) represents a continuum of mineralization styles, from porphyry-style ore occurring in quartz-magnetite-chalcopyrite veins and chalcopyrite disseminations to high-sulfidation epithermal Cu-Au ores in pyrite-chalcopyrite and anhydrite-sulfide veins. Decisive for the great economic importance of Bor is the …Web
اقرأ أكثرMineralogy of Sulfides | Elements | GeoScienceWorld
Sulfide minerals are compounds in which sulfur is combined as an anion with a metal (or semi-metal) cation or cations. The definition …Web
اقرأ أكثرCopper Mining and Processing: Resources and Glossary
copper sulfide ore: A copper-containing ore that is typically a mixture of copper carbonate, sulfate, phosphate, and oxide minerals and secondary sulfide minerals. Includes chalcocite and chalcopyrite. Typically processed using pyrometallurgy, although low-grade ores may sometimes use steps from the hydrometallurgy process.Web
اقرأ أكثرThe evolution of the ore-forming system in the low sulfide horizon …
The massive sulfide ores tend to occur along the lower contact of the intrusion between the intrusive and host rocks. Fig. 1. Schematic geological map of the Noril'sk ore region showing the position of the Noril'sk 1 deposit (Sluzhenikin et al., Reference Sluzhenikin, Krivolutskaya, Rad'ko, Malitch, Distler, Fedorenko and Simonov 2014 ).Web
اقرأ أكثرMinerals | Free Full-Text | Reducing Negative Effects of
Surface oxidation of the sulfide minerals negatively affects the flotation performance, i.e., the selectivity and even the recoveries at heavy oxidation conditions. Oxidation may take place during the formation of the ore, during mining and stockpiling, and during the flotation process. Stockpiling of large amounts of ore is a common practice in …Web
اقرأ أكثرSolid State Extraction of Nickel from Nickel Sulfide Concentrates
The conventional smelting and refining of Ni sulfide concentrates is an effective strategy for extracting Ni from sulfide ores. However, during the smelting process, sulfur is oxidized to sulfur dioxide (SO 2), which poses a significant environmental hazard.The present work investigates the feasibility of an alternative process to recover …Web
اقرأ أكثرMetals Extraction from Sulfide Ores with Microorganisms: The
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-grade ores and industrial effluents. ... In indirect bioleaching, the cells are not in direct contact with the mineral surface, but they have catalytic ...Web
اقرأ أكثرHeterocyclic Reagents in Flotation of Sulfide Ore: A Review
Oxygen-containing heterocyclic compounds are used as frothers in the flotation of sulfide and other ores. The T-80 reagent representing dimethyldioxane distillation residue and containing monohydric alcohols of the dioxane and pyran series is widely used [].At the same time, there are no indications that oxygen atom as a part of …Web
اقرأ أكثرAn Experimental Study on Enhancing Microbial Desulfurization of Sulfide
The composition of sulfide ores is relatively complex, but the main components that can contribute to spontaneous combustion are pyrite, colloidal pyrite, chalcopyrite, etc. [7,8]. Sulfur in these sulfide minerals is the decisive factor for spontaneous combustion in accordance with the mechanism of oxidation and spontaneous …Web
اقرأ أكثرThe Occurrence and Origin of Pentlandite-Chalcopyrite
The Noril'sk massive ores commonly contain 5-12 vol% of magmatic magnetite whereas magnetite is absent in the Jinchuan massive ores, which suggests that the sulfide liquid at Noril'sk had a ...Web
اقرأ أكثرSulfide Mineral
Pyrrhotite is an iron sulfide mineral with variable composition and its formula is usually given as Fe(1-x) S, where "x" represents vacancies in the Fe sites. For example, if x = 0.1, then the formula for pyrrhotite is Fe 9 S 10. The greater the Fe vacancies, the more unstable is the pyrrhotite, and the greater the tendency to oxidation.Web
اقرأ أكثرPlatinum Metals Magmatic Sulfide Ores | Science
Abstract. Platinum-group elements (PGE) are mined predominantly from deposits that have formed by the segregation of molten iron-nickel-copper sulfides from silicate magmas. The absolute concentrations of PGE in sulfides from different deposits vary over a range of five orders of magnitude, whereas those of other chalcophile elements vary by ...Web
اقرأ أكثرFlotation Reagents
Flotation Reagents. BASF is committed to providing sustainable solutions to the mining industry. Our technology and diverse range of chemistries supports creative and innovative applications for flotation, whilst delivering optimum performance for phosphates, sulfide ores, and various industrial minerals. Our flotation product portfolio offers ...Web
اقرأ أكثر12.3: Ore Genesis
Liquid immiscibility: sulfide ores containing copper, nickel or platinum may form from this process. As a magma changes, parts of it may separate from the main body of magma. ... which favours aqueous fluids in contact with the host mineral during diagenesis. solubility of the host mineral within nascent hydrothermal solutions in the source ...Web
اقرأ أكثرOxidation Behaviour and Bio-oxidation of Gold-bearing Sulphide Ores
sulphide minerals associated with gold ores. The availability of sufficient oxygen in bio -oxidation systems can speed up and enhance the oxidation of su lphide minerals, allowing the gold to be ...Web
اقرأ أكثرJoint Press Release:
Copper is extracted from primary sulfide ores through a flotation process and low-grade ores are traditionally discarded because they are too costly to process. Currently, an alternative hydrometallurgical heap leach process is employed for low grade oxide and secondary sulfide ores. ... BASF Media Contact. Laraine Kruger. Phone: +27 11 203 ...Web
اقرأ أكثرMechanochemical effect of spontaneous combustion of sulfide ore
Sulfide minerals generally refer to metallic minerals containing sulfur, such as pyrite, chalcopyrite, sphalerite, etc. Sulfide ore is a collection of various sulfide minerals with important industrial value. When the sulfide ores contact with air, an oxidation reaction will occur, and heat will be released.Web
اقرأ أكثرKinetic controls on the sulfide mineralization of komatiite-associated
Sulfide globules (Fig. 2 a and b) are localized above the disseminated ores and/or below the lowermost massive ores in the fine-grained contact facies. Thin tabular or sheet-like zones of massive mineralization are normally the basal shear zones or situated in the footwall rocks.Web
اقرأ أكثرLEACHING OF A ROASTED COPPER SULFIDE …
Jhunalyn Parantar. 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 …Web
اقرأ أكثرSulfide Mineral
Cobalt and Nickel Production. B. Mishra, in Encyclopedia of Materials: Science and Technology, 2001 1 Sources and Commercial Methods. The extractable sulfide minerals are pentlandite ((Ni,Fe) 9 S 8) which contains a small amount of cobalt, and the most abundant pyrrhotite ((Fe n−1 S n) or (Ni,Fe) 7 S 8).Chalcopyrite is another major mineral for nickel …Web
اقرأ أكثرNew sample preparation method for WD -XRF analysis of …
In this article, a methodology is described for the wavelength-dispersive X-ray florescence analysis of sulfide ores by fusion techniques. A boron nitride crucible is …Web
اقرأ أكثرSulphidisation of oxides and oxidised sulphides and
Sulphidisation, an electrochemical process for conversion of a non-sulphide, oxide or oxidised sulphide, to a sulphide surface that facilitates efficient adsorption of thiol collectors to impart hydrophobicity, offers a way to improve the enrichment of oxide and oxidised sulphide ores by flotation.Although it has shown great potential, it has equally …Web
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