Sulfide ores, which are generally mined from underground and often found in conjunction with copper-bearing ores, contain copper–iron sulfides in association with nickel–iron …Web

The purpose of this study is to show the patterns of distribution of disseminated sulfide in layered rocks based on the numerous geochemical and mineralogical data obtained for eight boreholes of the Norilsk intrusion (southern part of the Norilsk 1 deposit). There is a common trend of sulfide liquid fractionation in the Main Ore …Web

A smelting workaround. 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 …Web

Sulphide ores are a major source of Cu, Ni and precious metals. A basic principle of the extraction processes is to blow air into the molten sulphide in order to oxidise (1) S, which forms a gas and (2) Fe, which forms predominantly FeO and then partitions to a slag phase which covers the matte. A key element in the recovery of the metals is ...Web

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

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

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

a diverse range of products (i.e. mixed sulfide precipitate, mixed hydroxide precipitate, metal powder, cathode) whilst saprolitic ores are generally processed via pyrometallurgy to CONTACT Miao Chen [email protected] CSIRO Mineral Resources, Private Bag 10, Clayton South, Victoria 3169, AustraliaWeb

Sulfide minerals are compounds in which sulfur is combined as an anion with a metal (or semi-metal) cation or cations. The definition …Web

Sulfide Ore. The most common sulfide ore minerals are pyrite, pyrrhotite, chalcopyrite, sphalerite, and galena, whereas the most common oxide ore minerals are hematite, …Web

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

Sulfide ores are crushed and ground in order to liberate nickel minerals by selective flotation, in place of, or in conjunction with magnetic separators. After that, nickel concentrate (containing 6–20% Ni) can be collected. The enriched concentrate contains fuel composition in the form of iron sulfide, which can reduce the energy consumption ...Web

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

The sulfide orebody, precursor to the significant nonsulfide ores, is located at the crest of an open anticline at the contact between Neoproterozoic to Cambrian footwall micaschists and hanging wall marbles. 40Ar–39Ar data on muscovite from mineralized and unaltered footwall micaschists suggest a rapid Mid-Miocene exhumation of the ...Web

Abstract. Ore variability is a big challenge for mineral processing operations, especially in the flotation of complex polymetallic sulphide ores. Processing and blending strategies are determined mostly based on chemical and mineralogical characterization. However, surface characteristics of sulphide minerals is an equally important parameter ...Web

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

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

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

In this review, the fundamental process of bioleaching from low-grade metal sulfide ores are discussed with emphasis on mechanism, types, pathways, techniques, …Web

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

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

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

Unwanted leaching of metal sulfide-containing ores by leaching microorganisms generates acid mine/rock drainage (ARD/AMD). ... (II) ions, is well accepted to explain bioleaching. In addition, two bioleaching modes exist: "contact" and "non-contact" leaching (Sand et al. 2001; Rawlings 2002). Non-contact leaching is basically …Web

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

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

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

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

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

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

case sulfides and oxides in contact with them achieve a similar concentration of non-ferrous metals, wt.%: up to 0.7 Co, 1.5–21.8 Cu, and 1.1–56.6 Zn. Heating a mixture of …Web

The paper presents an overview of bio-oxidation of sulphidic refractory gold ores prior to gold cyanidation. This review discusses several factors, more importantly, oxygen requirements and oxygen ...Web

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

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

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

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