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Feb 02, 2018· The paper examines the issues surrounding scandium recovery from laterites and details the production process adopted by Scandium International Mining Corp for production of high purity scandium oxide. The process is based on high pressure acid leaching, scandium solvent extraction and scandium oxalate precipitation which is …
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The processing of laterite ores for the recovery of nickel and cobalt has increased as the reserves of exploitable sulphide ores have become depleted. The pressure acid leach process (PAL) has become the preferred option for the treatment of laterite ores. Difficulties associated with the poor settling characteristics of the pulp in the counter
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The process, according to the invention, comprises the following stages: (a) processing (1) of the laterite ore (O) by crushing, scrubbing, attrition, separation, and high-intensity magnetic separation; (b) Leaching (2) of the non-magnetic fraction (CN) obtained form the previous stage (a); (c) optionally, neutralization (3) of the effluent from the leaching …
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A process for recovering nickel and cobalt values from nickel- and cobalt- containing laterite ores as an enriched mixed nickel and cobalt sulphide intermediate and for producing nickel and cobalt metal from the nickel and cobalt sulphide intermediate. The laterite ore is leached as a slurry in a pressure acid leach containing an excess of aqueous sulphuric …
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WO2008055335A1 - Process for recovery of nickel and cobalt from laterite ores using ion exchange resin - Google Patents Process for recovery of nickel and cobalt from laterite ores using ion exchange resin Download PDF Info Publication number WO2008055335A1. ...
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Sep 29, 2003· This paper summarises the results of an extended investigation into the application of an RIP process for the recovery of nickel and cobalt from the tailings at a local PAL plant. The study has involved small-scale batch experiments in the laboratory followed by the operation of a continuous miniplant in the laboratory and has culminated in several …
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The object of the invention is to provide a process for the recovery of iron and nickel from low iron content laterite ores. Said process comprises subjecting the ore to a carburizing step in the presence of a reducing agent and carbon supplying agent to convert the iron to iron carbide, followed by smelting the residue or product of the carburizing step to …
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The process, according to the invention, comprises the following stages: (a) processing (1) of the laterite ore (O) by crushing, scrubbing, attrition, separation, and high-intensity magnetic separation; (b) Leaching (2) of the non-magnetic fraction (CN) obtained form the previous stage (a); (c) optionally, neutralization (3) of the effluent from the leaching …
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Dec 04, 2021· paper, the recovery of REEs from alumino-silicate ores, and nickel and cobalt from laterite ores is described. Atmospheric pressure leaching of ores in lixiviant con-taining hydrochloric acid and magnesium chloride followed by separation and purification, and recovery of these metals are presented. Mixed-Chloride Leaching Process for the …
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An essentially open-circuit process for recovering value metal species from a laterite-type feedstock, the process comprising the sequential or unsequential steps of separating the laterite-type feedstock into a first and a second fraction; reacting an acid with a chloride …
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Laterite ore is one of the important sources of nickel (Ni). However, it is difficult to liberate Ni from ore structure during reduction roasting. This paper provided an effective way for a robust recovery of Ni from laterite ore by H2 reduction using sodium thiosulfate (Na2S2O3) as a promoter. . It was found that a Ni content of 9.97% and a Ni recovery of 99.24% …
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May 12, 2008· 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 …
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The processing of laterite ores for the recovery of nickel and cobalt has increased as the reserves of exploitable sulphide ores have become depleted. The pressure acid leach process (PAL) has become the preferred option for the treatment of laterite ores. Difficulties associated with the poor settling characteristics of the pulp in the counter current …
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• Rugged Process . 5 Process Description 5.1 Overview of Existing Sulphide Flowsheet The CESL Nickel process for sulphides commences with an oxidizing pressure leach in a chloride-sulphate media to put nickel and cobalt into solution. This is followed by a series of purification steps to remove copper, zinc and iron.
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Jun 02, 2015· Biomining of sulfidic ores has been applied for almost five decades. However, the bioprocessing of oxide ores such as laterites lags commercially behind. Recently, the Ferredox process was proposed to treat limonitic laterite ores by means of anaerobic reductive dissolution (AnRD), which was found t …
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The process, according to the invention, comprises the following stages: (a) processing (1) of the laterite ore (O) by crushing, scrubbing, attrition, separation, and high-intensity magnetic separation; (b) Leaching (2) of the non-magnetic fraction (CN) obtained form the previous stage (a); (c) optionally, neutralization (3) of the effluent from the leaching …
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