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2018-12-12T19:12:09+00:00
  • Hydrometallurgical process for the valorization of nickel ...

    Hydrometallurgical process for the valorization of nickel contained in hyperaccumulating plants Xin Zhang 1 1 LRGP - Laboratoire Réactions et Génie des Procédés Résumé : Certaines plantes, dites hyperaccumulatrices, ont la capacité de se développer sur des sols riches en métaux et d’accumuler ces métaux à des concentrations élevées.

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  • Hydrometallurgical Process - an overview

    The hydrometallurgical process included pressure leaching under slightly oxidising conditions in diluted sulphuric acid (at 80–105 °C and 140-350 kPa oxygen pressure). This enabled selective extraction of up to 97% of copper, with less than 10% of pyrite taking part in the reaction.

  • Concept for a Hydrometallurgical Processing of a

    In 1976, Sridhar et al. introduced a pyrometallurgical process combined with hydrometallurgical extraction developed by the former International Nickel Company (Inco). The aim of this process is to reduce the mass that has to be leached in the hydrometallurgical process. 5

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  • Hydrometallurgical process for the valorization of nickel ...

    Hydrometallurgical process for the valorization of nickel contained in hyperaccumulating plants. Food and Nutrition. Université de Lorraine, 2014. English. ￿NNT: 2014LORR0172￿. ￿tel- 01751083￿ AVERTISSEMENT Ce document est le fruit d'un long travail approuvé par le jury de soutenance et mis à disposition de l'ensemble de la communauté universitaire élargie. Il est soumis à la ...

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  • 08. Srecko Stopic - RWTH Aachen University

    The study aims to compare three different hydrometallurgical processes for the treatment of nickel lateritic ores: Direct Nickel, Meta and Minara HPAL processes, as well as to point out a significance of the beneficiation processes in order to increase the leaching efficiency of nickel and cobalt. Direct Nickel Process, Australia

  • (PDF) DEVELOPMENTS IN THE

    The DNi Process™ is an atmospheric hydrometallurgical process which is capable of treating all types of nickel laterite ores to produce a number of saleable products. It has been in development ...

  • Pyrometallurgical Process - an overview

    The nickel slag is recycled back into the process until its nickel concentration is low, and is then disposed of in stockpiles. 72 In China alone, the 2005 generation of nickel slag was 800,000 tonnes, and just 8% of this was utilized for construction purposes, 72,73 with the remainder stockpiled or landfilled. 72 In Greece 1.5 Mt of nickel slag were generated in 2000. 74 Nickel slags are rich ...

  • HYDROMETALLURGICAL PROCESSING OF LATERITIC NICKEL ORES

    HYDROMETALLURGICAL PROCESSING OF LATERITIC NICKEL ORES Köse, Caner Hakkı M.Sc., Department of Metallurgical and Materials Engineering Supervisor: Prof. Dr. Yavuz A. Topkaya August 2010, 178 pages The objective of this thesis study is to recover nickel and cobalt at maximum

  • Hydrometallurgy - Wikipedia

    OverviewLeachingSolution concentration and purificationMetal recoveryExternal links

    Hydrometallurgy is a technique within the field of extractive metallurgy, the obtaining of metals from their ores. Hydrometallurgy involve the use of aqueous solutions for the recovery of metals from ores, concentrates, and recycled or residual materials. Processing techniques that complement hydrometallurgy are pyrometallurgy, vapour metallurgy, and molten salt electrometallurgy. Hydrometallurgy is typically divided into three general areas:

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  • 2.1 Hydrometallurgy - North-West University

    According to Bautista (1984:v) the hydrometallurgical route for the recovery of a metal, where dissolution (leaching), separation, concentration and reduction to the metal is carried out at near ambient temperature, is becoming more competitive with the conventional high temperature processes used in the smelting of metals.

  • Concept for a Hydrometallurgical Processing of a

    In 1976, Sridhar et al. introduced a pyrometallurgical process combined with hydrometallurgical extraction developed by the former International Nickel Company (Inco). The aim of this process is to reduce the mass that has to be leached in the hydrometallurgical process. 5

  • hydrometallurgical process - Traduction française – Linguee

    De très nombreux exemples de phrases traduites contenant "hydrometallurgical process" – Dictionnaire français-anglais et moteur de recherche de traductions françaises.

  • HYDROMETALLURGICAL PROCESS FOR

    05/03/2009  The present invention is related to a hydrometallurgical process to produce nickel as hydroxide, oxide or cathode and produce cobalt preferably as sulfides. The present invention is particularly adequate to process eluate containing nickel and cobalt.

  • US5223024A - Hydrometallurgical copper

    A process for the extraction of copper from a copper ore or concentrate comprises first subjecting the ore or concentrate to agitation leaching at an elevated temperature and pressure in the presence of oxygen and water to obtain a resulting acidic leach liquor which contains dissolved copper. The acidity of the resulting acidic leach liquor is then reduced by affecting percolation leaching of ...

  • (PDF) Hydrometallurgical Processing of Nickel

    Hydrometallurgical Processing of Nickel Laterites—A Brief Overview On The Use of Solvent Extraction and Nickel/Cobalt Project For The Separation and Purification of Nickel and Cobalt

  • REVIEW OF THE PAST, PRESENT, AND FUTURE OF THE ...

    Pyrometallurgical processing of the laterites is still a dominant technology, but the share of nickel and cobalt produced by the application of various hydrometallurgical technologies is increasing. Hydrometallurgy is a less energy-demanding process, resulting in lower operational costs and environmental impacts.

  • OutOtec HydrOmetallurgical Nickel PlaNts aNd PrOcesses

    lurgical versus hydrometallurgical nickel production, and our experts, who have broad and deep metallurgical knowledge, can offer our customers optimized and reliable process design based on their particular raw materials. With a global reputation for offering premier technologies for processing nickel concentrates, Outotec has recently developed new technologies for leaching ores, concen ...

  • HYDROMETALLURGICAL PROCESSING OF LATERITIC NICKEL

    HYDROMETALLURGICAL PROCESSING OF LATERITIC NICKEL ORES Köse, Caner Hakkı M.Sc., Department of Metallurgical and Materials Engineering Supervisor: Prof. Dr. Yavuz A. Topkaya August 2010, 178 pages The objective of this thesis study is to recover nickel and cobalt at maximum

  • Hydrometallurgical process for the recovery of

    01/02/2014  A hydrometallurgical process is developed to recover valuable metals of the lithium nickel cobalt aluminum oxide (NCA) cathodes from spent lithium-ion batteries (LIBs).

  • Hydromet Technology - Vale

    The new hydrometallurgical process that Vale developed will process the nickel concentrate directly to metal products without first having to smelt the concentrate. The concentrate will be processed in a pressurized vessel where it will react with oxygen and sulphuric acid to produce an impure solution of nickel, cobalt and copper.

  • OutOtec HydrOmetallurgical Nickel PlaNts aNd PrOcesses

    lurgical versus hydrometallurgical nickel production, and our experts, who have broad and deep metallurgical knowledge, can offer our customers optimized and reliable process design based on their particular raw materials. With a global reputation for offering premier technologies for processing nickel concentrates, Outotec has recently developed new technologies for

  • CU22856A1 - hydrometallurgical process for

    nickel recovery hydrometallurgical process leaching Prior art date 1997-02-18 Application number CU1997021A Other languages Spanish (es) Inventor Rodriguez Milagros Escalona Laurencio Oscar Perez Urtafe Isabel Lobaina Gonzalez Pilar Martin Fuxa Ana Maria De La Cruz Villanueva German Antonio Alvarez Suarez Jose Castellanos Original Assignee Ct De

  • HYDROMETALLURGICAL PROCESS FOR

    05/03/2009  A hydrometallurgical process for recovery of nickel and cobalt applicable to a pulp resulting from lateritic ore leaching, nickel oxidate, cobalt oxidate or a mixture with nickel and cobalt as metals of interest, and other secondary metals regarded as impurities such as manganese, magnesium, calcium, aluminum, iron and chromium wherein the pulp was

  • Hydrometallurgical process for the separation and recovery ...

    Hydrometallurgical process Nickel recovery abstract The Laboratory of Metallurgy of the National Technical University of Athens has developed and patented a novel integrated hydrometallurgical method, suitable to treat low-grade nickel oxide ores efficiently and economically. It involves heap leaching of the ore by dilute sulphuric acid at ambient

  • Derleme / HYDROMETALLURGICAL PROCESSING OF NICKEL ...

    nickel, leaving the nickel in the raffinate with Mn, Mg, Ca for further purification or by extraction both nickel and cobalt leaving majority of the impurity in the raffinate, i.e. the aqueous phase resulted from the extraction process. Clearly, additional SX circuit for the separation of the nickel and cobalt is required for the latter. The ...

  • Processing of Nickel Laterite Ores on the Rise

    Both hydrometallurgical and pyrometallurgical approaches are utilized to process nickel laterite ores, with the best approach depending on the ore composition. The Solvent Extraction – Electrowinning (SX-EW) process continues to grow in popularity.

  • Hydrometallurgical Processes for the Recovery

    Process Research ORTECH Inc. (PRO) has developed innovative mixed chloride leaching processes for the recovery of REEs from alumino-silicate ores, and nickel and cobalt from laterite ores. The addition of magnesium chloride in hydrochloric acid enhances the activity of the hydrogen ion by orders of magnitude, which permit rapid leaching rates at moderate

  • WO2018079101A1 - Hydrometallurgical

    This hydrometallurgical method for a nickel oxide ore is characterized by comprising a leaching step for preparing a slurry of a nickel oxide ore having a carbon quality of 0.20 mass% or more, adding sulfuric acid to the ore slurry in a reaction container, and subjecting the resultant slurry to a leaching treatment at high temperature and high pressure, to obtain a leached liquid containing ...

  • HYDROMETALLURGICAL EXTRACTION OF SCANDIUM FROM

    the pH controlled solution purification process in the course of hydrometallurgical processing of lateritic nickel-cobalt ores. The experimental findings showed that considerable amount of scandium can be precipitated, concentrated and used as a secondary scandium source in a two-step pH controlled solution purification process of nickel-cobalt production. After obtaining the

  • Hydromet Technology - Vale

    This type of hydrometallurgical process is not entirely new. Many operations, some of them in Canada, have used hydrometallurgical processes for years for extraction of zinc and copper from sulphide concentrates. However, it was not until the 1990s that an acid-oxidative hydromet technology was developed to process nickel sulphide concentrates.

  • (PDF) Hydrometallurgical processing of nickel

    Hydrometallurgical processing of nickel lateritic ores. January 2016; Military Technical Courier 64(4):1033-1047; DOI: 10.5937/vojtehg64-10592. Authors: Srećko Stopić . 31.8; RWTH Aachen ...

  • US4435369A - Hydrometallurgical process for

    A hydrometallurgical process for extracting nickel from comminuted nickel-bearing minerals. The process includes the steps of contacting the comminuting nickel-bearing minerals in an extraction zone with an aqueous solution having a concentration of chloride ions, metal ions and sulfuric acid at an elevated temperature and continuing the contact to form an extraction mixture slurry, including ...

  • Hydrometallurgical process for the separation and recovery ...

    Mihaylov et al. (2000) have developed a novel hydrometal- lurgical process for nickel and cobalt recovery from the Goro later- ite ore. Their study proposed the simultaneous extraction of 0.6 g/L Co and 6 g/L Ni from 3 g/L Mn and 10 g/L Mg sulphate solutions by 15%

  • Hydrometallurgical Nickel and Cobalt recovery process

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  • The development of a novel hydrometallurgical

    Nickeliferous laterite ores constitute most of the world's known nickel and cobalt resources and will likely be the predominant source of new nickel land cobalt) in the future. Pressure acid...

  • Concept for a Hydrometallurgical Processing of a Copper ...

    Clausthal University of Technology was assigned to develop the hydrometallurgical process for the treatment of a FeNiCuCo alloy. The developed process consists of pressurized sulfuric acid leaching with the suppression of hydrogen gas formation, precipitation and solvent extraction.

  • Hydrometallurgical Processes for the Recovery

    Process Research ORTECH Inc. (PRO) has developed innovative mixed chloride leaching processes for the recovery of REEs from alumino-silicate ores, and nickel and cobalt from laterite ores. The addition of magnesium chloride in hydrochloric acid enhances the activity of the hydrogen ion by orders of magnitude, which permit rapid leaching rates at moderate temperature and atmospheric pressure ...

  • TR199701569T1 - hydrometallurgical method

    A mineral ore or the concentrate containing Ni / Co values and removal process, ore or with the concentrated oxygen and halogen ions and bisulphate or sulphate ions in the acid solution, such as H2SO4, pressurized to be exposed to oxidation, and thus the resulting pressure oxidation slurry containing Ni / Co values that contain them stage a liquor It contains.

  • Cobalt-nickel separation in hydrometallurgy: a

    At RBMR, cobalt is removed from a nickel leach stream by precipitation with nickelic hydroxide, Ni (OH)3, and the filter cake is re-dissolved using formalin as a reductant for Co (III).

  • VOISEY’S BAY NICKEL COMPANY PROJECT DESCRIPTION

    feasible hydrometallurgical process technology is developed. However, should the Hydromet Plant prove not to be technically or economically feasible, VBNC will construct an alternative hydrometallurgical commercial facility for processing of nickel-bearing matte (the “Matte Plant”) incorporating a proven, state of the art technology to

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