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KR-20070041770-A chemical patent summary.
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A generalized flow sheet of the recovery of copper, cobalt, and nickel can be found below, Figure 1. Fig. 1: Generalized Flow Sheet of Copper/Cobalt/Nickel Recovery (Fisher, 2011) When designing processes for cobalt recovery, it is important to analyze and overcome some of the technical challenges that lie ahead.
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In nickel smelting, most of the cobalt is recovered during electrolytic refining of the nickel by precipitation from solution, usually as a cobaltic hydroxide. But even in nickel smelting, cobalt starts to oxidize before the nickel and can be recovered from the final converter slag.
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EP1159461A1 EP00913778A EP00913778A EP1159461A1 EP 1159461 A1 EP1159461 A1 EP 1159461A1 EP 00913778 A EP00913778 A EP 00913778A EP 00913778 A EP00913778 A EP ...
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The use of Dow M4195 for nickel and cobalt recovery has been widely studied and the effects of operating conditions such as solution pH and flow rate on nickel and cobalt recovery are well understood (Grinstead, 1984; Rosato et al., 1984; Mendes and Martins, 2004; Sirola et al., 2008). The effect of temperature on the recovery of nickel and cobalt
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Studies to recover metals from nickel laterite leach using chelating resins indicated that resins with the iminodiacetate functional group are better to recover copper, while in order to recover nickel and cobalt resins with bis-picolylamine are better [45, 46]. In experiments performed using Solution 1, Lewatit® TP 207 was more selective for ...
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This technology is applicable to the recovery of nickel, cobalt, copper, and platinum group metals from furnace or converter slags emanating from copper or nickel smelters treating sulphide concentrates. Pilot-plant testwork at Mintek has demonstrated recoveries of 98% for nickel and over 80% for cobalt, at power levels of up to 600 kW.
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In the present study, precipitation of nickel and cobalt as mixed hydroxide precipitate (MHP) from pregnant leach solution of nickel limonite ore from Soroako after iron removal stage was carried out. A series of MHP precipitation experiments was conducted by using MgO slurry as neutralizing agent and the effects of pH, temperature, duration of precipitation and the addition of MHP seed on the ...
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KR-100727719-B1 chemical patent summary.
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As shown in Figure Aa, the cobalt recovery process is based on the continuous selective oxidation and hydrolysis of cobalt from relatively impure nickel electrolyte. Cobalt-bearing slime, containing 8–10% Co, 28–34% Ni, 0.4–0.8% Cu, and 5–6% Zn, is treated by selective reduction with sulfur dioxide to solubilize the cobalt and nickel to ...
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The paper presents the outcomes of exploratory research relating to the atmospheric pressure and ambient temperature leaching of nickel and cobalt from a Western Australian low grade, disseminated, nickel-cobalt sulfide ore, and the subsequent recovery using ion exchange (IX) using alkaline glycine solutions in mildly oxidizing environments.
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"If you can integrate carbon capture with the recovery of previously inaccessible minerals, say of nickel and cobalt, you could make some …
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Percentage recovery of nickel and cobalt from pretreated ore and 90 ml of 9K medium inoculated with 10 ml of bacterial 8 ore culture containing 2.5×10 cells/ml. Prior to leaching, the microor- ganism was adapted to 10% (w/v) pulp density of lateritic nickel Percentage (%) recovery in 31 days Types of thermally ore samples which were thermally ...
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Based on the experimental results, the efficient recovery of cobalt (Co) and nickel (Ni) from the low grade laterite ore can be achieved using the pressure leaching and neutralization treatment ...
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RECOVERY OF NICKEL AND COBALT FROM ORE. A process is provided for the selective recovery from an impure solution of pure nickel and cobalt solutions, suitable for electrolysis of the respective metals. The impure solution may be that obtained from acid leaching of nickel/cobalt bearing laterite or oxide ore.
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tain about 100 million lb of cobalt and 150 million lb of nickel. On an annual basis, the cobalt mined (but present ly not recovered) is equivalent to roughly 13 pct of the U.S. cobalt consumption.' Studies were conducted on ores from the Viburnum trend in southeast Missouri. The Viburnum trend deposits
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This study focused on the development of hydrometallurgical process which allows the nickel (Ni) and cobalt (Co) recovery from a low grade laterite ore. The developed process consists of two main stages: leaching and precipitation.
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The resultant solution containing nickel, cobalt, and remaining impurities such as magnesium, manganese and calcium is now ready for the new cobalt separation process. Figure 1: Nickel Recovery Flowsheet PO Zn, Cd and Cu Impurities Cu SX Fe/AL Removal Sulphide PPT NHP Leach Plant Ni Purification Plant Ni Scavenging Mg Removal Cu EW
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NICKEL AND COBALT RECOVERY FROM A BULK COPPER-NICKEL CONCENTRATE USING THE CESL PROCESS D.L. Jones, K. Mayhew and L. O‟Connor CESL 12380 Horseshoe Way Richmond, British Columbia, Canada V7A 4Z1 ABSTRACT CESL has developed a novel hydrometallurgical process for treating Cu and Ni sulphide concentrates, including bulk concentrates.
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As presented in Table 1, the Umicore process is based on the hydrometallurgical treatment of the cobalt, nickel, manganese, copper and iron alloy resulting from the pyrometallurgy step, in order to separate cobalt from nickel, to recover them selectively in order to use them as battery electrode precursor . Thus, cobalt is recovered as an oxide ...
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to recover any of the cobalt, and only a small portion of the nickel is being recovered during copper elec trorefining. Because the Nation is almost totally dependent on foreign sources of cobalt, new domestic sources constitute an imperative need. Most of the cobalt and nickel in the Lead Belt ore …
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EXPERIMENTAL NICKEL·COBALT RECOVERY FROM MELT·REFINED SUPERALLOY SCRAP ANODES By J. L. Holman1 and L. A. Neumeier2 ABSTRACT The Bureau of Mines is conducting research to recover strategic and critical metals such as Ni, …
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Acidithiobacillus ferrooxidans a chemolithotrophic bacterium has been reported to solubilize nickel from lateritic ore by microbial reductive method. Recent study reported about the use of DIRB (Dissimilatory Iron Reducing Bacteria) in bio-reduction of lateritic chromite overburden (COB) and enhancement in nickel and cobalt recovery.
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Separation and recovery of iron and nickel from low‒grade laterite nickel ore using reduction roasting at rotary kiln followed by magnetic separation …
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The studies on the development of a new process for nickel and cobalt recovery from ferriferous laterite ores via a reducing roasting-sulfuric acid leaching are carried out. The conditions for the reducing roasting of the ores in the temperature range from 400 to 950°C and for the sulfuric acid leaching of the cinder (after cooling without air and passivation in water) at pH 1.4-3.0 and the ...
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A process is described for the recovery of nickel and/or cobalt from laterite or partially oxidized lateritic ores having a substantial proportion of the iron present in the ferrous state. The process includes providing a laterite or partially oxidized laterite ore wherein a substantial proportion of the iron present in the ore is in the ferrous state; acid leaching the ore to provide a ...
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Nickel and cobalt are converted to soluble sulfate salts, and are recovered from the slurry in a counter-current decantation circuit (CCD). CCD involves washing the residue and recovering soluble nickel and cobalt. The remaining acid is neutralized using a limestone slurry, which produces a gypsum precipitate.
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A. Jones, " Enhanced metal recovery from a modified Caron leach of mixed nickel-cobalt hydroxide," PhD Thesis of Applied Chemistry and Mineral Science, MurdochUniversity, 2013. Google Scholar; 3. A. N. Jones and N. J. Welham, Properties of aged mixed nickel-cobalt hydroxide intermediates produced from acid leach solutions and subsequent ...
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particularly, manganese from nickel and cobalt are used by each project. 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
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Figure 2. XRD analysis for Nickel Ore Nickel laterite was analyzed using XRF and XRD. The result of XRF was list - ed in Table 1. The table shows that the late- rite contains 0,514% of nickel, 0,04% of cobalt dan 1,776% of calcium. The nickel content found in this ore is classified as low grade, hence it called as limonite ore. This ore able to ...
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This residue contained 0.28 pct of the copper, and 79 pct of the cobalt and nickel from the original 25.2-kg batch of concentrate. Using a higher grade feed containing 1.2 pct Ni, the recovery of nickel and cobalt was 88 pct at grades of 16.2 and 11.4 pct, respectively. In each case, 99.7 pct of CuFeS2 was dissolved.
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Most existing process plants for nickel laterite ores use intermediate precipitation processes to recover the nickel and cobalt from the leach solution. The precipitation produces an intermediate product of nickel and cobalt, either as mixed sulfide precipitate (MSP) or mixed hydroxide precipitate (MHP), while largely separating nickel and ...
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