• Leaching Laterites: Two New Processes Make Progress | E

    Presenters at technical conferences over the past few years have highlighted laterite ore processing challenges, which include high energy requirements involving both heat and pressure, high consumption of expensive reagents and sulphuric acid, and environmental risks, to name just a few Over the past century, a number of hydrometallurgical processes have been developed to recover nickel from

  • (PDF) Nickel laterite processing technologies – where to next?

    · Production of nickel from laterite ores has occurred for over 100 years beginning with processing of garnieritic ores from New Caledonia However, until

  • Treatment of NickelCobalt Laterites

    Short Courses Practicallyoriented short courses on topics including treatment of nickel laterites, copper ore leaching, uranium ore processing, copper SXEW, heap leaching and solvent extraction Courses offered by live online sessions, ondemand recordings and inperson at ALTA conferences Publications Proceedings and manuals from ALTA conferences, seminars and short courses MetBytes Free

  • Acid Pressure Leaching of Nickeliferous Laterite Ore

    · Autoclaving of Laterite Ores High in Magnesium Silicates The first commercial operation to utilize sulfuric acid pressure leaching to process nickeliferous laterite ore was Freeport Sulfur’s Moa Bay plant in Cuba The Cuban government expropriated this plant in 1960 shortly after startup The ore contained about 48% Fe, 5% Al, 4% SiO2, 14% Ni, and less than 1% Mg It was wet screened at 20

  • Rotary Dryers in Nickel Laterite Ore Preparation

    Historically, these fines, along with other dusts generated throughout laterite ore processing and handling, have been collected and deposited into tailing heaps as a means of waste management But as nickel becomes more valuable, and producers look to create a closedloop business model, these fines are seeing a new life through pelletizing; by pelletizing the fines into large agglomerates

  • Laterite | Cobalt Institute

    It also interferes with the processing of the ore as individual grains need to be crushed in order to liberate ore minerals from gangue intergrowths Grades of cobalt in laterite deposits vary widely in the range 01 to 15% Co Topography plays an important role in the formation of laterite deposits The most extensive deposits are found on gently dipping slopes where groundwater can freely

  • Nickel processing Extraction and refining | Britannica

    The specific processes taken depend on whether the ore is a sulfide or a laterite In the case of sulfides, the reaction of oxygen with iron and sulfur in the ore supplies a portion of the heat required for smelting Oxide ores, on the other hand, do not produce Nickel processing Nickel processing Extraction and refining: The extraction of nickel from ore follows much the same route as

  • Laterite Ore an overview | ScienceDirect Topics

    For laterite ore processing, a reverberatory, flash, or electric furnace is used to (i) remove free and chemically bound moisture; (ii) reduce the nickel oxide; and (iii) reduce iron content sufficiently to produce ferronickel product Laterite ores have no significant fuel value and the electric furnace can be used to obtain the high temperatures to accommodate the high magnesia content of

  • Laterite Ore Processing | A Blog for Browsing Mining

    · Laterite Ore Processing Posted on August 27, 2012 by Nanthakumar Victor Emmanuel, PEng COO, CVMR Corporation Leave a comment Some of the world class Nickel Laterite ore deposits have Cobalt, Copper and PGE values Recovering all these metal values in a single refining step is a major challenge Carbonyl Vapor Metallurgical process is a viable technology to over come this

  • Acid Pressure Leaching of Nickeliferous Laterite Ore

    · Autoclaving of Laterite Ores High in Magnesium Silicates The first commercial operation to utilize sulfuric acid pressure leaching to process nickeliferous laterite ore was Freeport Sulfur’s Moa Bay plant in Cuba The Cuban government expropriated this plant in 1960 shortly after startup The ore contained about 48% Fe, 5% Al, 4% SiO2, 14% Ni, and less than 1% Mg It was wet screened at 20

  • Salinity in Nickel Laterite Processing SGS

    The effect of salinity on the processing of various nickel laterite ores is discussed In particular, the presence of high concentration chloride, sulphate, sodium, calcium and magnesium is addressed Key unit process operations affected by these ions include ore preparation, pressure acid leaching, countercurrent decantation and product purification and precipitation Some of the process

  • Concentration and Separation of Scandium from Ni

    · An alternative process for the production of base metals (Ni, Co and Fe) from both high and low iron laterite ores is being developed by Process Research ORTECH Inc (PRO), a

  • Distribution & exploration of lateritenickel ore resources

    Lateritenickel ore with mature process and advanced management could reach this level Especially the detailed feasibility report of thrust acid leaching technology for processing lateritenickel ore in recent years has calculated the value of cobalt so the production cost of each pound nickel was less than USD14 Thus, the technology utilized by lateritenickel developing center has changed

  • Laterite | Cobalt Institute

    It also interferes with the processing of the ore as individual grains need to be crushed in order to liberate ore minerals from gangue intergrowths Grades of cobalt in laterite deposits vary widely in the range 01 to 15% Co Topography plays an important role in the formation of laterite deposits The most extensive deposits are found on gently dipping slopes where groundwater can freely

  • Selective Reduction of Laterite Nickel Ore

    Unlike sulphide nickel ore processing, laterite nickel ore processing requires higher processing energy through smelting Therefore, a novel method to process laterite nickel ore using lower energy is needed The novel method is done via direct reduction and magnetic separation In laterite nickel processing by direct reduction, the challenges are to conduct selective reduction of nickel and

  • Extraction of Nickel, Cobalt and Iron from Laterite Ores

    The laterite deposits exhibit graded layers of ore, with high iron, low nickel ore on top and low iron, high nickel ore below The low iron (< 15 % Fe) ores containing 17 — 23% Ni are treated by pyrometallurgical processes to produce ferronickel or matte High iron (> 35 % Fe) limonitic ores can be treated by high pressure leach using sulfuric acid An alternative process for the

  • Nickel Sulfide Versus Laterite : The Hard Sustainability

    An alternative process for laterite ores is to use the Caron process, based on high temperature ammonia leaching and similar processing of metalrich solutions Cobalt is a valuable byproduct metal from all Ni laterite projects (especially HPAL plants) METHODS FOR ASSESSING ENVIRONM ENTAL SUSTAINABILITY ASPECTS A major concern with this increasing proportion of laterite nickel is that

  • Salinity in Nickel Laterite Processing SGS

    The effect of salinity on the processing of various nickel laterite ores is discussed In particular, the presence of high concentration chloride, sulphate, sodium, calcium and magnesium is addressed Key unit process operations affected by these ions include ore preparation, pressure acid leaching, countercurrent decantation and product purification and precipitation Some of the process

  • Laterite | geology | Britannica

    nickel processing: Laterites Other important classes of ore are the laterites, which are the result of long weathering of peridotite initially containing a small percentage of nickel Weathering in subtropical climates removes a major portion of the host rock, but the

  • Acid Pressure Leaching of Nickeliferous Laterite Ore

    · Autoclaving of Laterite Ores High in Magnesium Silicates The first commercial operation to utilize sulfuric acid pressure leaching to process nickeliferous laterite ore was Freeport Sulfur’s Moa Bay plant in Cuba The Cuban government expropriated this plant in 1960 shortly after startup The ore contained about 48% Fe, 5% Al, 4% SiO2, 14% Ni, and less than 1% Mg It was wet screened at 20

  • MURDOCH RESEARCH REPOSITORY

    Although future supplies of nickel depend on laterite ores, their processing is inherently energy intensive and expensive as, unlike sulphide ores, they cannot be significantly upgraded, meaning the entire ore needs to be treated in the process In addition, hydrometallurgical processes in particular have significant waste disposal problems However, new technologies are being developed that

  • Thermodynamics of the Reduction Roasting of Nickeliferous

    rometallurgical methods of processing laterite ores The fundamentals of this method have previously been discussed in detail [6] The objective of the current work was [5] to apply thermodynamic models to the reduction roasting of both a limonitic ore and a saprolitic ore and also to determine the optimumreduction conditions, using carbon as the reducing agent Additionally, the two ore types

  • Nickel Sulfide Versus Laterite : The Hard Sustainability

    An alternative process for laterite ores is to use the Caron process, based on high temperature ammonia leaching and similar processing of metalrich solutions Cobalt is a valuable byproduct metal from all Ni laterite projects (especially HPAL plants) METHODS FOR ASSESSING ENVIRONM ENTAL SUSTAINABILITY ASPECTS A major concern with this increasing proportion of laterite nickel is that

  • STUDY ON MINERALOGY AND CHEMISTRY OF THE SAPROLITIC

    laterite ore is essential step that should be performed before the application of process option Soroako nickeliferous laterite deposit is the most important ore as source for Ni in Indonesia Despite this deposit has been produced for nearly four decades, the information on its mineralogical characteristic is minimal The present paper discusses the mineralogy and chemistry of

  • Production of ferronickel from nickel laterites in a DC

    The most important advantage of the process is the fact that a wide range of laterite ores (in terms of particle size and chemical composition) can be processed Feeding of fine material Problems have previously been noted with regard to the feeding of laterite ore fines to a conventional shieldedarc AC furnace, leading to decreased power and production levels (4)

  • Academics in Laterite ore processing Academiaedu

    View Academics in Laterite ore processing on Academiaedu

  • Cobalt extraction Wikipedia

    Nickelcobalt lateritic ores can be treated by either hydrometallurgical processes or pyrometallurgical processes, such as matte or ferronickel smelting, which require the entire ore to be melted and the metal values to be separated from the residual components of the ore The hydrometallurgical process for laterite ore can use sulfuric acid or ammonia leach solutions Recovery from arsenide

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