• Nickel processing Extraction and refining Britannica

    Various processes are used to treat nickel matte. One process is the ammonia pressure leach, in which nickel is recovered from solution using hydrogen reduction, and the sulfur is recovered as ammonium sulfate for use as fertilizer.In another, the matte may be roasted to produce high-grade nickel oxides; these are subjected to a pressure leach, and the solution is electro- and carbonyl refined.

  • Nickel processing Britannica

    Nickel alloys exhibit a high resistance to corrosion in a wide variety of media and have the ability to withstand a range of high and low temperatures. In stainless steels, nickel improves the stability of the protective oxide film that provides corrosion resistance. Its major contribution is in conjunction with chromium in austenitic stainless steels, in which nickel enables the austenitic structure to be retained

  • Nickel Compounds US EPA

    In the environment, nickel is found primarily combined with oxygen or sulfur as oxides or sulfides. (1) Each form of nickel exhibits different physical properties. (1,6) Soluble nickel salts include nickel chloride, nickel sulfate, and nickel nitrate. (6) Nickel carbonyl, a highly unstable form, is not found naturally and decomposes rapidly. (1)

  • Nickel Data Sheet Mineral Commodity Summaries 2020

    The U.S. Census Bureau reported that exports of nickel in ores and concentrates were 54,600 tons in 2018; all or part of these data have been referred to the U.S. Census Bureau for verification. 3Defined as primary imports primary exports + adjustments for industry stock changes, excluding secondary consumer stocks.

  • Minerals Free Full-Text Extraction of Nickel from

    In this study, segregation roasting and magnetic separation are used to extract nickel from a garnierite laterite ore. The garnierite laterite ore containing 0.72% Ni, 0.029% Co, 8.65% Fe, 29.66% MgO, and 37.86% SiO2 was collected in the Mojiang area of China. Garnierite was the Ni-bearing mineral; the other main minerals were potash feldspar, forsterite, tremolite, halloysite, quartz, and

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  • Nickel sulphide concentrate processing via low-temperature

    Apr 01, 2019· We experimentally confirmed that nickel sulphate is the main nickel-containing product of the reaction between nickel sulphide concentrate and sodium chloride at 400 °C, and the reduced nickel oxide and chloride content was identified in the calcine. The other main products included iron oxide (III) and sodium sulphate.

  • Nickel Concentrate AMERICAN ELEMENTS

    Nickel (atomic symbol: Ni, atomic number: 28) is a Block D, Group 4, Period 4 element with an atomic weight of 58.6934. The number of electrons in each of nickel's shells is [2, 8, 16, 2] and its electron configuration is [Ar]3d 8 4s 2. Nickel was first discovered by Alex Constedt in 1751.

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  • Nickel Data Sheet Mineral Commodity Summaries 2020

    The U.S. Census Bureau reported that exports of nickel in ores and concentrates were 54,600 tons in 2018; all or part of these data have been referred to the U.S. Census Bureau for verification. 3Defined as primary imports primary exports + adjustments for industry stock changes, excluding secondary consumer stocks.

  • Oxidation of nickel sulfide SpringerLink

    Jan 01, 1984· The oxidation of nickel sulfide whose atomic fraction of sulfur,x s, is 0.40 to 0.44 was studied in a mixed O2-N2 gas stream at 923, 973, and 1023 K. The oxygen partial pressure was maintained at 2.0 x 104 Pa. In the oxidation of nickel sulfide ofx s = 0.40 and 0.41, a dense NiO layer was formed on the sulfide surface without the evolution of SO2 gas, because of the low sulfur activity.

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  • Minerals Free Full-Text Extraction of Nickel from

    In this study, segregation roasting and magnetic separation are used to extract nickel from a garnierite laterite ore. The garnierite laterite ore containing 0.72% Ni, 0.029% Co, 8.65% Fe, 29.66% MgO, and 37.86% SiO2 was collected in the Mojiang area of China. Garnierite was the Ni-bearing mineral; the other main minerals were potash feldspar, forsterite, tremolite, halloysite, quartz, and

  • Cited by: 2
  • processing of nickel ores and concentrates

    nickel oxides and concentrates ordredesaintvincent. Process for extracting a manganese concentrate from,A process for extracting a manganese oxide concentrate of metallic copper, nickel and cobalt from manganese, such as maritime manganese concentrations The ore is first finely ground and then is leached in an aqueous suspension at temperatures of 90 DEG -100 DEG C and at a pH

  • CZ306697B6 A method of obtaining concentrates of

    The method of obtaining concentrates of rare and strategic elements, oxides and minerals by selective magnetic separation, where the material to be treated is first subjected to a magnetic separation at 1 to 5 T. After the magnetic and non-magnetic fractions are formed, the magnetic fraction thus obtained is selectively resolved by a weaker magnetic field than 1 T in the range of 0.1 to 0.35 T

  • Concentrate Boliden

    Zinc concentrates Metal content: 45 55 per cent zinc Copper concentrates Metal content:around 30 per cent Lead concentrates Metal content: around 70 per cent Nickel concentrates Metal content: around 10 per cent Precious metals The above concentrates contain platinum and palladium in

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  • Copper Cliff Nickel Refinery Vale

    Concentrate Vale’s Copper Cliff Nickel Refinery converts metallic feed streams (primary nickel oxide and nickel sulphide) from the Smelter Complex and Clydach Nickel Refinery in the United Kingdom into pure nickel pellets and powders that are 99.99% pure and sold to market. Cobalt, copper and platinum

  • Copper extraction Wikipedia

    Copper extraction refers to the methods used to obtain copper from its ores.The conversion of copper consists of a series of physical and electrochemical processes. Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors.. As in all mining operations, the ore must usually be beneficiated (concentrated).

  • Copper Ore Types: Sulfides vs. Oxides An Investor's

    Copper-containing rock, or copper ore, holds only a small percentage of copper.Most of the rock is unwanted material, typically referred to as gangue. There are two main types of copper ore of

  • Enhanced methods for nickel recovery from low-grade ores

    High-grade nickel oxides are produced by fluid-bed roasting and chlorine-hydrogen reduction of nickel matte. High-purity nickel pellets are produced by using vapour processes, an example of this is the carbonyl process: the copper and precious metals remain as a pyrophoric residue, which requires separate treatment.

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  • Direct Alloying of Steel with Nickel Concentrate

    There are no any showings of using nickel oxides or nickel concentrates in domestic metallurgical industry. However, a technology of direct alloying of steel with manganese, chromium