Interactions between copper ions and selected sulfide mineral concentrates were investigated in flask and column tests under conditions relevant to heap leaching in order to understand why copper recovery from a copper–nickel complex sulfide ore was significantly less than nickel recovery.
Nickel was first discovered by Alex Constedt in 1751. The nickel atom has a radius of 124 pm and a Van der Waals radius of 184 pm. In its elemental form, nickel has a lustrous metallic silver appearance. Nickel is a hard and ductile transition metal that is considered corrosion-resistant because of …
The 2,586 km² Disko-Nuussuaq ('Disko') Magmatic Massive Sulphide ('MMS') nickel-copper-platinum-cobalt project ('Ni-Cu-PGM-Co') is located on the southwest coast of Greenland. Having shown its potential to host mineralisation similar to the world's largest nickel/copper sulphide mine Norilsk-Talnakh ('Norilsk'), Bluejay is ...
fide and ferrous sulfide (Table 1, Figure 1 and Figure 2). Values of ΔG0 and equilibrium constants show that nickel sulfide precipitation process with hydrogen sulfide in the presence of iron (reaction 1) and with iron sulfide (reaction 2) goes on sufficiently low-ΔG0 from −26.0 to
June 26, 2013. A. Hi James. 24 kt gold plating that is thick enough to have no porosity is resistant to nearly everything, including hydrogen sulfide. If you are saying that the nickel will be plated on the copper and the gold will be plated on the nickel, it sounds perfect, as related by Chuck, above.
Sulphide Textures – A Key to Recognizing and Navigating in Magmatic Nickel Systems. Ultimately sufficient sulphides will accumulate within these depressions to form nickel-copper-PGE orebodies. These orebodies are characterized by a number of distinct textural elements (Figure 3 below).
Paper covering copper nickel alloys (cupronickels) in multistage flash desalination units. Evaluates composition of alloys, properties, welding, corrosion behaviour, critical flow rates, sulfides, ammonia chlorine, sand, desalination environments and vaporside corrosion.
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.
The residue is removed. A feed of matte and sulfide concentrate containing approximately 0.4% cobalt and 30% sulfur is pressure leached at elevated temperature and pressure in an ammoniacal solution to produce a solution of nickel, copper and cobalt. By boiling away the ammonia; copper is precipitated as a sulfide and sent to a smelter.
Nickel sulphide. Nickel sulfide (NiS) 16812-54-7. Nickel monosulfide. Nickel(II) sulfide. Nickelous sulfide. sulfanylidenenickel. Nickel sulfide (millerite) beta Nickel sulfide. CCRIS 3733. Mononickel monosulfide. Nickel(2+) sulfide. EINECS 234-349-7. 11113-75-0. Nickel sulfide (amorphous) alpha-Nickel sulfide (1:1) crystalline. NICKEL SULFIDE ...
Nickel sulfide and copper sulfide nanocrystals were synthesized by adding elemental sulfur to either dichlorobenzene-solvated (copper sulfide) or oleylamine-solvated metal(II) precursors (nickel sulfide) at relatively high temperature to produce the metal sulfide. Nickel sulfide nanocrystals are cubic Ni3S4 (polydymite) with irregular prismatic shapes, forming by a two-step reduction ...
Nickel is most widely used in the production of stainless steel. Traditionally, nickel has been processed from sulfide ores in an approach similar to copper processing, in which the ore is upgraded to concentrates and then smelted. As sulfide ore resources dwindle, however, processing of lateritic nickel ores is becoming of greater necessity ...
Nickel processing: Nickel processing, preparation of the metal for use in various products. Although it is best known for its use in coinage, nickel (Ni) has become much more important for its many industrial applications, which owe their importance to a unique combination of properties. Nickel …
(green feed) ore concentrate produces matte, a molten mixture of copper sulfide (Cu2S), iron sulfide (FeS), and some heavy metals. Converting the matte yields a high-grade "blister" copper, with 98.5 to 99.5 percent copper. Typically, blister copper is then fire-refined in an anode furnace, cast into
State of the Art review of Seawater Corrosion Resistance and Antifouling of Copper Nickel (cupronickel) alloys covering 90-10 and 70-30 alloys. This paper examines surface films, localised corrosion, sand erosion, galvanic issues, sulfides and ferrous sulfate treatments as well as biofouling, boat hulls and offshore sheathing.
Scientists from the U.S. Geological Survey are evaluating the potential for undiscovered sulfide deposits containing varying amounts of nickel, copper, platinum-group metals, and cobalt in the Lake Superior region as part of an ongoing effort to assess the mineral potential of the United States.
Copper-Nickel ores Pentlandite ((Ni,Fe)S) is the most important nickel sulphide mineral and is often associated with nickel-containing pyrrhotite and chalcopyrite. Gangue minerals can include talc and other troublesome silicates which must be dispersed and/or depressed.
Pentlandite is an important ore of nickel. However, it does not produce good crystals and is generally only found in massive form. It is commonly associated with other sulfides such as pyrite, chalcopyrite and pyrrhotite in basic igneous rock intrusions. These sulfide ore bodies are probably produced through magmatic segregation.
MINERAL DEPOSIT MODELS: NICKEL SULFIDE DEPOSITS OF THE KAMBALDA TYPEI J. MURRAY DUKE Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario KIA 0E8 ABSTRACT Mineral deposit models provide a framework for research in economic geology as well as a basis for mineral explo-ration and resource assessment. Three kinds of models are
Although Minnesota has a long history of iron ore mining, sulfide mining for copper, nickel, and precious metals has never been attempted. Prices for some metals, including copper, reached historic highs in 2011, and some companies have sought to mine Minnesota's low-grade sulfide ores.
This study was prompted by the disparate recoveries of nickel (> 70%) and copper (< 20%) from a test heap of copper–nickel sulfide ore after about 200 days of leaching. Variables tested in bioleaching columns charged with a pyrrhotite-rich, chalcopyrite and pentlandite ore were acid pre-conditioning, inoculation and aeration.
The PolyMet NorthMet open pit copper-nickel mine would be Minnesota's first non-ferrous mine. It would include three new open pits, permanent and temporary waste rock heaps, and a permanent tailings waste dump and highly toxic hydrometallurgical residue in Minnesota's St. Louis River watershed in …
ELECTROCHEMICAL AND ATOMIC FORCE MICROSCOPY STUDIES OF A COPPER NICKEL ALLOY IN SULPHIDE-CONTAMINATED SODIUM CHLORIDE SOLUTIONS. Developments in Marine Corrosion, 41-63. A. El Domiaty and J. N. Alhajji. (1997) The susceptibility of 90Cu-10Ni alloy to stress corrosion cracking in seawater polluted by sulfide ions.
Kambalda type komatiitic nickel ore deposits are a class of magmatic iron-nickel-copper-platinum-group element ore deposit in which the physical processes of komatiite volcanology serve to deposit, concentrate and enrich a Fe-Ni-Cu-(PGE) sulfide melt within the lava flow environment of an erupting komatiite volcano
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