ammonium sulfide in nickel mining

  • Nickel Solvent Extraction Technology

    6. The final nickel product is a high-purity electrowon cathode, a readily marketable product. Cobalt is recovered as market-able cobalt sulfide product. There is also the potential to produce nickel sulfate. 7. Ammonia is recycled, resulting in a low ammonia8.

  • 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, environment, and communities.

  • Save the Boundary Waters

    The Boundary Waters Canoe Area Wilderness is threatened by sulfide-ore copper mining. The Campaign to Save the Boundary Waters is leading the effort to ensure permanent protection for the Boundary Waters Wilderness, America''s most visited Wilderness and Minnesota ''s crown jewel, from proposed sulfide-ore copper mining.

  • Products

    SODIUM HYDROSULFITE E GRADE. Pulp & Paper, Textile. Bleaching and brightening This product is used in the pulp and paper industry to bleach and brighten fiber and recycled fiber.... Chemicals, Feed, Food, Pharmaceutical, Photographic and Imaging, Water treatment. SODIUM METABISULFITE NF/FOOD AND PHOTO GRADE.

  • Ambatovy Mining Project, Madagascar | EJAtlas

     · It will soon rank among the largest lateritic nickel mining entities in the world. See more Actually, the Canadian company Sherritt International incorporated, currently in a joint venture with Sumitomo, a Japanese company, Kores, a South Korean company, and SNC Lavalin, also Canadian, signed an agreement for cobalt and nickel extraction in Ambatovy with the Malagasy government in …

  • Gold News And Analysis | Mining News | KITCO

    Copper (in sulfide) 2,281 tonnes ( 5.0 million lbs) 66,157 tonnes (0.145 billion lbs) Saleable product would be paid for on the basis of 85% for nickel contained in nickel hydroxide and 80% for cobalt hydroxide and copper in copper sulfide. Capital and

  • Qualitative Analysis

     · In this experiment, we will test for the presence of Zinc (Zn), Nickel(II), Iron(III), Manganese(II), Aluminum (Al), and Chromium (Cr) ions.6:10 Test for Zi...

  • Reductive leaching of limonitic ores with hydrogen sulfide …

    The solid separated from the leach solution is treated for sulfide recovery, e.g. by conventional flotation techniques to concentrate nickel and cobalt sulfides and elemental sulfur. Nickel and cobalt are recovered from this concentrate by, for example, redissolving the nickel and cobalt in acidic media leaving a residue of elemental sulfur which can be recycled for H 2 S generation.

  • FLOTATION BEHAVIOR OF NICKEL SULFIDE ORE IN A CYCLONIC …

    Flotation behavior of nickel sulfide ore in a cyclonic flotation column 773 depressant calgon, 5 min for the collector and 1 min for the frother. In the flotation tests, the column was run first with water and air until a steady state was reached. The feed was introduced

  • Sulfide precipitation of heavy metals

    Sulfide precipitation was considerably better than the lime precipitation process for waste number 12, which contained a high concentration of Zn (440 mg/L), in the presence of ammonium ion, and for waste number 9, which contained 24 mg/L Cu and 99 mg/L Ni

  • Emission Estimation Technique Manual

    and to the production of +99% pure nickel at the refinery, for the nickel sulfide and nickel/cobalt laterite processes. It does not include extraction of ore, which is covered by the EET Manual for Mining. Ancillary activities (eg. power generation, and ammonium

  • Using Nickel as a Catalyst in Ammonium Thiosulfate …

     · For extracting gold from the copper bearing sulfide ore, a higher ammonia and thiosulfate concentrations were required with 0.0001 mol/dm 3 of Ni 2+. The ammonium thiuosulfate consumption with nickel as catalyst on the copper bearing sulfide ore was about 1∼5 kg/t-ore less than that using copper as catalyst.

  • Sulfide Mining Overview

    sulfide mining industry is an important producer of commonly used metals that are necessary for our day-to-day operation and consumption patterns. Copper is used for building materials and electronics and nickel is used to produce stainless steel and nickel batteries (like those being used in electric cars).7 Sulfide mining is remarkable in its mineral to waste ratio. The USGS reported that the average yield of copper mining was between 0.47 and 0.60 percent8 and that production of copper9 reached a high of just under 1.6 million tons (based on data from 1970-1990).10 This means that the 1.6 million tons represents at most 0.60 percent of the ore that was removed from the earth or about 270 million tons of ore were processed. As demand for materials increases, the economic feasibility of mining ores with even lower concentrations is likely to increase. For example, the proposed Polymet operation has an concentration of 0.28% copper …

  • Buy Dithiophosphates

    Its major component is Ammonium Dibutyldithiophosphate and is very soluble in water while having no strong odor. It is very efficient in the flotation process of antimony and nickel sulfide minerals, as well as with nickel sulfide minerals which have low flotation characteristics.

  • Alkaline leaching of nickel bearing ammonium jarosite precipitate using …

    Alkaline leaching of nickel bearing ammonium jarosite precipitate using KOH, NaOH and NH 4OH in the presence of EDTA and Na 2S E. Ntumba Malenga, A.F. Mulaba-Bafubiandi, W. Nheta⁎ Mineral Processing and Technology Research Centre, Department of ...

  • THE IMPORTANCE OF MINERALS AND MINING

    COPPER SULFIDE There are two basic types of Copper minerals, sulfides and oxides. Copper sulfides are minerals that contain both copper and sulfur. They may also contain other elements, particularly iron, cobalt and nickel. Examples of copper 2 5 FeS 4 2

  • Sulfate as a Contaminant in Freshwater Ecosystems: Sources, …

    Copper-Nickel Sulfide Mining in Minnesota and Sulfide Toxicity to Wild Rice In Freshwater Wetlands Mining of Sulfide Ores oxidation to sulfate discharge of sulfate to natural waters Effects on Wild Rice: healthy roots (left) and roots with sulfidic black

  • Potential health risk and levels of heavy metals in water …

     · Heavy metals are potential health risk, especially in mining sites where they deteriorate from sulfide-rich ore bodies. Lead, cadmium, arsenic and mercury are very carcinogenic, while others are toxic. The assessment of the levels of these metals in water resources of the lead–zinc mining communities of Enyigba, Mkpuma Akpatakpa, Ameka, Amorie, Amanchara and Alibaruhu was carried …

  • Environmental Guidelines for Nickel Smelting and Refining

    ammonium bisulfite or dimethyl aniline); • recovery as elemental sulfur (using reductants such as hydrocarbons, carbon or hydrogen sulfide). Toxic nickel carbonyl gas is normally not emitted from the refining process because it is decomposed in decomposer ...

  • Nickel element extraction, mining technique – flash, electric …

    The nickel matte is treated through various processes. Among such processes is the ammonia pressure leach which helps in obtaining nickel on hydrogen reduction whereas the sulfur is separated as ammonium sulfate and made useful as a fertilizer.

  • ammonium sulfide in nickel mining

    Nickel subsulfide Ni3S2 Mining except oil and gas and support activities organic peroxides and epoxid Simple salts of sulfides such as sodium potassium and ammonium sulfide react vigorously with acids to release hydrogen sulfide carcinogenesis are

  • Alkaline leaching of nickel bearing ammonium jarosite …

     · The leaching efficiency of nickel was 82.4%, 84.5% and 88.9% in NaOH, KOH and NH 4 OH respectively in the presence of 0.1 M EDTA–Na 2 S, pH 9–10, using − 75 μm of ammonium jarosite precipitate at 250 rpm, 45 C, 5% solids and leaching time of 4 h.

  • Sulfide Minerals

    Major nickel sulfide deposits are found in Canada, Russia, South Africa, and Australia. Oxide deposits are typically found stratified with a top layer of iron overburden. Below the iron is a limonite (hydrated iron oxide) which also contains 1–1.5% nickel, 40–50% iron, and 0.2% cobalt and other impurities.

  • Ammoniumsulfide | Sigma-Aldrich

    Ammonium sulfide solution Ammonium sulfide solution CAS Number: 12135-76-1 Molecular Weight: 68.14 Linear Formula: (NH 4) 2 S Product Number Product Description SDS A1952 20% in H 2 O Pricing W205303 20 wt. % in H 2 O Pricing 515809 40-48 2 O ...

  • Novel Flower-like Nickel Sulfide as an Efficient …

     · In this paper, metal sulfide materials have been explored for the first time as a new choice of bifunctional cathode electrocatalyst materials for non-aqueous lithium-air batteries (LABs). Nickel sulfides with two different morphologies of flower-like (f-NiS) and rod-like (r-NiS) are successfully synthesized using a hydrothermal method with and without the assistance of cetyltrimethyl ammonium ...

  • Nickel(II) sulfate

    Nickel(II) sulfate, or just nickel sulfate, usually refers to the inorganic compound with the formula NiSO 4 (H 2 O) 6.This highly soluble blue green coloured salt is a common source of the Ni 2+ ion for electroplating.Approximately 40,000 tonnes were produced in 2005. were produced in 2005.

  • Sulfide Mining | Minnesota Center for Environmental …

    Sulfide-ore mining for copper and nickel, however, has never been attempted here. In the case of PolyMet, MCEA has led the fight for accountability and true science-based decision-making. MCEA lawyers and experts have time and again cast light on the flaws inherent in the PolyMet proposal, first in the environmental review and permitting process, and now in the courts.

  • Process for recovering valuable metal from waste catalyst

     · The sulfide slime thus obtained was readily usable as a starting material in copper smelting. Furthermore, the ammonium alum was suitable for use as the material for producing high purity alumina (sodium-free alumina). (4) Separation and Recovery of(4-1

  • Nickel / cobalt mining extraction procedures | …

    Hydrogen sulfide can be injected to precipitate nickel and other sulfides. After this, there is another leaching stage to remove iron and copper, and finally nickel is precipitated by the addition of ammonia, ammonium sulfate and hydrogen.

  • Nickel: Chemical reactions | Pilgaard Elements

    Nickel(II)-ions are precipitated by sulfide either using H 2 S and acetic acid (HCl can''t be used) or Na 2 S under neutral to alkaline conditions forming the black NiS Ni 2+ (aq) + S 2− (aq) NiS (s) [black] Reaction of nickel with water Nickel metal does not react ...

  • Efficient Synchronous Extraction of Nickel, Copper, and …

     · Nickel metal as an important strategic resource, it has been widely applied in batteries, catalysts, and other fields thanks to the extraordinary physicochemical properties. Currently, the sulfide ...

  • nickel sulfide extraction

    Nickel Extraction by Andrew Laroche on PreziThe pyrrhotite is then sent to froth flotation cells, and produces a 3% nickel concentrate. Extraction of Nickel From Pentlandite Michael Englert, An&nickel sulfide extraction Nickel Mining Like its 1864 Ahead of The Herd ...

  • Nickel Sulfide Versus Laterite : The Hard Sustainability Challenge …

    In general, production of nickel from sulfide ores involves either open cut or underground mining, followed by concentration via flotation, smelting of concentrates to produce a nickel matte, finally leading

  • ANALYSIS OF CYANIDE IN MINING WATERS

    OH Ammonium hydroxide Ni (CN) 2 Nickel (II) cyanide NO 2-Nitrite NO 3-Nitrate OH-Hydroxide PbCO 3 Lead carbonate PbS Lead (II) sulfide S-2 Sulfide S 2 O 3-2 Thiosulfate SAD Strong acid dissociable SCN-Thiocyanate

  • The top three nickel sulphide-bearing deposits in Canada

     · Quebec''s Ungava Peninsula Quebec has one operational mine, the Raglan mine, which rests on one of the finest sulphide nickel deposits in the Ungava peninsula. According to Natural Resources Canada, Raglan began production in 1997 following 30 years of exploration and development. The mine was acquired by Xstrata Nickel (LSE:GLEN) in 2006.

  • Nickel Statistics and Information

    Nickel (Ni) is a transition element that exhibits a mixture of ferrous and nonferrous metal properties. It is both siderophile (i.e., associates with iron) and chalcophile (i.e., associates with sulfur). The bulk of the nickel mined comes from two types of ore deposits:

  • ASTI >> Case Studies, Application Bulletins & White Papers …

    #17 Ammonium & Nitrate in Municipal Wastewater #18 Free Ammonia for Municipal Chloramination MINING OVERVIEW #5 Refining of Copper from Sulfide Ores #8 Total Cyanide for Gold Mining #9 Solvent Extraction (SX) for Nickel Ores

  • US7004326B1

    nickel addition Prior art date 2004-10-07 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.) Active Application number

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