cobalt flotation concentrate

  • Flotation of mixed oxide sulphide copper-cobalt minerals ...

    recovered in the sulphide concentrate while for the oxide concentrate, only 60% of the copper and 40% of the cobalt are usually recovered (Crundwell et al., 2011). With mixed oxide-sulphide ores, it is accepted practice to concentrate sulphide and oxide minerals in separate flota-tion processes. While flotation is a common method to concentrate

  • Significant Cobalt Recovery a Major Upgrade at the Hat ...

     · "Composite" went directly to flotation, "Gravity" was gravity separated to remove free gold and the samples were each subjected to the same flotation sequence to produce a high gold-copper concentrate with low cobalt and a pyrite concentrate with high cobalt. Recoveries (Preliminary and Unoptimized) are shown in the accompanying table:

  • Cobalt Flotation Recovery

     · Two successive flotation tests were done in the laboratory at bench scale on a rougher concentrate, and the data from each tailing assay were combined into a hypothetical cobalt product. In each test, recoveries approached or exceeded 80 pct and the grades exceeded 3.5 wt pct Co on a starting grade of 0.5 wt pct Co.

  • US6569224B2

    A hydrometallurgical process for the recovery of nickel and cobalt values from a sulfidic flotation concentrate. The process involves forming a slurry of the sulfidic flotation concentrate in an acid solution, and subjecting the slurried flotation concentrate to a chlorine leach at atmospheric pressure followed by an oxidative pressure leach.

  • Grid Metals Reports Increased Nickel Cobalt Recovery to ...

     · A medium grade Mayville sample, selected by Grid Metals, grading 0.48% Cu; 0.24% Ni, 0.02% cobalt was subjected to a laboratory scale flotation program of rougher and cleaner flotation. The best performing bulk concentrate achieved (Float 7), contained a copper/nickel grade of 23% with a cobalt grade of 0.40%.

  • FinnCobalt reports succesfull flotation testwork results ...

    The aim of the nickel-cobalt bench scale flotation test work was to produce a nickel concentrate with a grade of 6% Nickel with maximum recovery and suitable for leaching. This target was achieved as the concentrate grade of Ni 6.2% with recovery 79.8% and cobalt grade 1.5% with recovery 77.6% was produced already after the 1 st cleaning stage.

  • US4460459A

    A sequential flotation process for the recovery of high-grade concentrates of copper, lead and cobalt-nickel from sulfide ores is provided. A primary grind ore pulp is conditioned with SO 2 as H 2 SO 3 under intense aeration, and the conditioned pulp subjected to sequential flotation, with regrinding and conditioning of a copper rougher concentrate obtained in the first flotation step for copper.

  • Cobalt extraction

    Addition of hydrogen gas to saturation precipitates cobalt powder with a purity of approximately 99.6%. Recovery from copper-cobalt oxide concentrates. The ore is comminuted and the cobalt rich oxides are separated by froth flotation. The cobalt-bearing concentrate is then mixed with lime and coal, and then melted in a reducing atmosphere.

  • RECOVERY OF COBALT AND NICKEL BY ATMOSPHERIC …

    Recovery of cobalt and nickel in atmospheric leaching of flotation sulfide concentrate… 195 where: R % metal leaching recovery, % c metal concentration in the solution, g/dm3 (mg/dm3) V leaching solution volume, dm3 m mass of the concentrate, g metal content in the concentrate, % (g/Mg).

  • Flotation of mixed oxide sulphide copper-cobalt minerals ...

     · The grade–recovery curves for cobalt in the sulphide flotation stage are shown in Fig. 9-A. Dithiophosphate collector DF245 allows for the highest overall cobalt content in the sulphide concentrate, which decreases from 4600 to 3800 ppm in the flotation process. This again confirms the selectivity of a dithiophosphate structure.

  • (PDF) Application of Knelson concentrator for ...

    The beneficiation of high talc-containing copper–cobalt flotation tailings was studied by centrifugal gravity concentration. It was found that copper and cobalt minerals were finely disseminated in the gangue matrix so that conventional gravity

  • Significant Cobalt Recovery a Major Upgrade at the Hat ...

     · The initial flotation tests demonstrate that it is possible to produce a high gold, low cobalt-copper concentrate and a high cobalt, low gold pyrite concentrate. Further optimization work will aim to improve selectivity, grades and recoveries.

  • Cobalt

    Cobalt –copper sulfide ores are being exploited in several Democratic Republic of Congo and Zambia mines (Katanga, 2010). Cobalt and copper are extracted in the following steps: (a) flotation; (b) sulfation roasting; (c) leaching (sometimes along with additional oxide concentrate or ore); (d) solvent extraction separation of copper from ...

  • Mineralogical Prediction of Flotation Performance for a ...

    The flotation concentrate from sample S6 mainly consists of the valuable sulphide minerals bornite, carrollite and minor chalcocite with a relatively small number of gangue particles (quartz, K-feldspar and dolomite). ... it should be noted that these models are deposit-specific and that the copper and cobalt flotation models can be used for ...

  • NICKEL AND COBALT ORES: FLOTATION

    erals dilute the grade of the concentrate and also result in nickel losses into the tailings. This problem can be overcome by using depressants like car-boxymethylcellulose (CMC) and guargum deriva-tives, although their cost accounts for as much as 60% of the reagent cost incurred in the plant. Developments in Flotation

  • Processing of Cobalt-Copper-Arsenic Complex Ore Concentrate

    Extraction of cobalt from complex ore flotation concentrates obtained from the Blackbird Mine. Idaho. USA is reviewed. After flotation of a primary copper concentrate, a bulk concentrate is recovered containing major amounts of cobalt, arsenic, and iron, with minor amounts of copper and nickel.

  • Significant Cobalt Recovery a Major Upgrade at the Hat ...

     · The initial flotation tests demonstrate that it is possible to produce a high gold, low cobalt-copper concentrate and a high cobalt, low gold pyrite concentrate.

  • Malachite and heterogenite behavior during the locked ...

     · This phenomenon is supporting the statement according which the flotation efficiency is greatly influenced by variations in the feed water quality. Besides, one finds in the concentrate more cobalt (59%) than copper (43%) revealing a great sensitivity of malachite towards chemical species introduced in the pulp water.

  • Trilogy Metals Announces Additional Copper-Cobalt ...

     · In order to produce a cobalt-rich concentrate a pyrite flotation stage was added to recover pyrite from the copper flotation tailings and the pyrite concentrate was subsequently cleaned to …

  • Capstone Mining

     · Dr. Albert Garcia PE, Vice President of Projects commented, "Our concept for cobalt recovery in the 2020 PEA Opportunity is based on its association with pyrite which is preferentially concentrated in the flotation process at the copper cleaners/scavengers as outlined in the 2019 Technical Report, and then further upgraded to a 0.7% cobalt concentrate.

  • Recovery of cobalt and copper through reprocessing of ...

     · On a kinetics standpoint, the best recovery of copper and cobalt is achieved while using the lowest dosage of the reagents (Fig. 6, Fig. 7) because more copper (>40%) and cobalt (>80%) are recovered in concentrate within the first 8 min of flotation of the studied tailings. Download : Download full-size image; Fig. 6.

  • Copper Nickel Flotation

     · The final tailing was rejected in the cobalt-nickel circuit. The flotation pilot plant is shown. Results typical of a single shift during the pilot run are summarized. The recoveries of lead and copper were 87.1% and 81.6% in a concentrate analyzing 20.6% copper, 10.1% lead, 0.99% nickel, and 0.77% cobalt.

  • Cobalt Flotation Recovery

     · The thickener underflow at 28% solids is effectively metered to the flotation section by a Adjustable Stroke Diaphragm Pump. All reclaimed water from the thickener overflow is pumped to a constant head mill water tank. Vertical Centrifugal Sand Pumps are employed for silver-cobalt table concentrate handling. Silver Cobalt FLOTATION Circuit

  • Initial flotation test work results of Hautalampi Cobalt ...

    The copper flotation was followed by production of Cobalt- Nickel-concentrate in the acidic environment. The aim of the Cobalt-Nickel- flotation was to produce a nickel concentrate with a grade of 6% Nickel and aiming to maximize the recovery. Preliminary bench scale flotation test results indicate following results:

  • A New Process for Cobalt Nickel Separation

    excellent cobalt-nickel separation primary leach liquor by Cyanex 272. However, manganese extraction from the leach liquor along with cobalt could not be avoided, thus increasing the cost of the process. For sulphide ores, there is another alternative; if the ore can be concentrated by flotation, matte smelting is used instead of leaching.

  • Copper-Cobalt ores

    Bulk flotation sequence: Under the bulk flotation process, a bulk Cu-Co flotation concentrate is produced at natural pH with xanthate, dithiophosphate and/or MBT, particularly if the copper mineralization is chalcocite. Copper is separated from the cobalt in the bulk concentrate by raising the pH up to at least 11 which depresses the cobalt ...

  • Hydrometallurgical process for the recovery of nickel and ...

    An aqueous slurry of a nickel-cobalt-copper sulfidic flotation concentrate, typically containing 5 to 25% Ni, 1 to 10% Cu and 0.2 to 1.0% Co, with a particle size corresponding to a d 80 of 40 to 80 microns, is fed to an attritor mill in fine grinding step 12 to reduce the particle size to …

  • Leachox™ Process for flotation concentrates | Maelgwyn ...

    Whilst the installation is similar to that used for pre-oxidation or Aachen assisted leaching in the Leachox process the flotation concentrate is pumped through the reactor multiple times perhaps as many as 30 passes in contrast to 1-2 passes for the pre-oxidation role pending upon the mineralogy ultrafine grinding of the flotation concentrate may be required prior to cyanidation

  • Nickel Cobalt Flotation Process

    nickel and cobalt and 15.9 pct of the copper originally in the copper concen­ trate; the remainder of the values reported to the flotation concentrate, which analyzed 29.6 pct Cu. To verify the laboratory flotation results, a 60 kg/hr process demonstra­

  • US5925862A

    A process for the production of cobalt concentrate from an ore containing metal sulfides including sulfides of lead, zinc, and cobalt. The ore is crushed and subjected to a lead and cobalt flotation to separate the lead and cobalt from the zinc and produce a bulk lead cobalt concentrate. The lead cobalt concentrate is then subjected to a cobalt flotation to separate the cobalt from the lead ...

  • Continuous Flotation Testing To Recover Cobalt From ...

    During beneficiation, the cobalt is distributed to the various mill product streams as shown in figure 3. The run­ of-mine ore contains 0.015 wt pct Co. About 30 pct of this cobalt reports to the copper concentrate at an average grade of 0.50 wt pct Co. This represents an improvement ratio of 33.

  • 800tpd Cobalt Concentrator & Hydromet Facility | ...

    Project Highlights. Feasibility design through detailed design and construction support. Flotation concentrate produced at the Concentrator for shipment via truck to the Hydromet facility. Nitrogen Species Catalyzed Leach (NSC) utilized for cobalt extraction as a cobalt …