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May 10, 2021 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.
Feb 28, 2019 rst commercial plant for cobalt recovery using bioleaching technology. It mainly deals with Co-bearing pyrite. A cobaltiferous pyrite concentrate, grading 1.38 cobalt, has been used as the raw material for the bioleaching 8. Additionally, previous research by our group revealed that cobalt can be leached from carrollite via bacteria 9.
EP0930373B1 EP19980204322 EP98204322A EP0930373B1 EP 0930373 B1 EP0930373 B1 EP 0930373B1 EP 19980204322 EP19980204322 EP 19980204322 EP 98204322 A EP98204322 A EP ...
This study was designed to recover copper and cobalt hydrometallurgically from an enriched concentrate of flotation and converter slag. Three slag samples collected from the Ergani Copper
the copper concentrate was chosen for initial studies, and is the subject of this report. Previous Bureau of Mines research to recover cobalt from the copper concentrates has included both hydrometal lurgical and flotation studies. Hydrometallurgical schemes have utilized a
ConclusionsFor the extractive separation of copper, cobalt and nickel from the leach liquor of the copper concentrate, LIX 84 and Na-Cyanex 272 were effectively utilised as solvents. The species extracted into the organic phase were determined to be CuA 2 for copper with LIX 84, and MR 2 3HR for cobalt and nickel with Na-Cyanex 272.
A study of the recovery of copper, nickel and cobalt from copper converter and smelter slags by leaching with ferric chloride is reported. The converter slag from Ghatsila, India contained 4.03 ...
Recovery of Copper and Cobalt from Converter Slag with a New Flotation Method Using H2S 71 Table 1 The spectral wavelength of metal for AAS. Metal Wavelength nm Silit nm Current mA Oxidant-Fuel Copper 324.75 0.5 3 Air-Acetylene Cobalt 240.73 0.2 10 Air-Acetylene Table 2 Flotation condition at different pHs.
significant correlation between copper and nickelcobalt leaching recovery was observed. Due to the fine dissemination of nickel and cobalt, they were leached remarkably faster when copper leaching recovery exceeded 90. Keywords atmospheric leaching, cobalt, nickel, sulphuric acid, Lubin copper concentrate. Introduction
Nov 01, 2020 A commercial application of stirred-tank reactor STR bioleaching for Co recovery has even been demonstrated for a cobalt-containing pyrite concentrate stockpiled in the former copper mine in Kasese, Uganda Morin and dHugues, 2007. The abandoned Rammelsberg mine is located in the historic Harz Mountains mining district in central Germany.
Jan 15 2021 0183 32 Typical flotation recoveries are about 85 for copper and 75 for cobalt from sulphide ores and recovery of 75 of copper and only 45 of cobalt from oxide ores Fisher and Treadgold 2009 For mixed oxide-sulphide ore recoveries are lower up to 80 of the copper and 60 of the cobalt in the sulphides and only 60 of the copper and 40 of...
Extraction, separation and recovery of Nickel, cobalt and copper flotation concentrate containing the sulfides of Nickel, cobalt and copper, characterized in that it comprises the following stages obtaining a suspension containing the specified fleet acid leaching at atmospheric pressure, resulting in the formation of raw slurry to leaching ...
recovery from this residue achieved 96 silver extraction. These favorable technical outcomes led to an economic assessment for this option. The capital cost of a CESL facility processing 50,000 tpy of high bismuth grade, copper concentrate was estimated to be in excess of 100M with an annual operating cost of 14Myr. Economics were found to
Copper concentrate grades ranged from 24.5 to 34.5 percent copper and averaged 27.6. Copper concentrate quality is shown to be very good with low levels of penalty elements. Cobalt has been shown to be readily recoverable to a pyrite concentrate with grades of this concentrate in the range of 700 to 4500gt cobalt.
Dec 01, 2013 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.
NICKEL AND COBALT RECOVERY FROM A BULK COPPER-NICKEL CONCENTRATE USING THE CESL PROCESS D.L. Jones, K. Mayhew and L. OConnor 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.
May 10, 2021 Significant Cobalt Recovery a Major Upgrade at the Hat Copper-Gold-Cobalt Deposit in the Golden Triangle. Read full article. ... low cobalt-copper concentrate and a high cobalt
Future metallurgical test work planned for the Bornite include an evaluation of the potential to recover cobalt from zones which are shown to be high in cobalt. Additional copper recovery test work will cover a broader range of grades 0.2 to 2 and continue to be focused on the flowsheet and processing philosophy shown in Figure 1.
Cobalt sulfides occasionally occur in lead-zinc deposits in quantities sufficient to justify their recovery. Mineral processing. The most important sulfide sources, the copper-cobalt ores of Congo Kinshasa and Zambia, are processed in the conventional manner to produce a copper-cobalt concentrate.
Apr 06, 2020 Step 2 Leaching the resulting calcine pyrrhotite to extract cobalt and copper. The process successfully treated the cobalt concentrate, with leach extractions of 90 of the cobalt
EP1325165B1 EP01909372A EP01909372A EP1325165B1 EP 1325165 B1 EP1325165 B1 EP 1325165B1 EP 01909372 A EP01909372 A EP 01909372A EP 01909372 A EP01909372 A EP 01909372A EP 1325165 B1 EP1325165 B1 EP 1325165B1 Authority EP European Patent Office Prior art keywords nickel leach cobalt copper solution Prior art date 2000-09-18 Legal status The legal status
Cobalt is recovered by flotation into a concentrate wherefrom it is leached by pressure oxidation followed by solution purification involving copper solvent extraction and
Feb 28, 2018 At this point, a cobalt recovery circuit could be utilized to extract and recover cobalt from the spent copper leach solution the barren liquor would be recycled to the leaching dump. Recovery of cobalt from spent leach solutions has significant advantages over methods for recovering cobalt
The recovery of copper, nickel and cobalt from the leach liquor of a sulphide concentrate by solvent extraction has been conducted, 5 where copper from leach liquor was extracted with LIX 84 in ...
1. A process for the recovery of at least copper, nickel and cobalt from a concentrate containing copper, nickel and cobalt minerals which includes the following steps a biologically oxidising the mineral concentrate in slurry form to dissolve copper as soluble copper sulphate and nickel as nickel sulphate
May 10, 2021 Significant Cobalt Recovery a Major Upgrade at the Hat Copper-Gold-Cobalt Deposit in the Golden Triangle. Read full article. ... low cobalt-copper concentrate and a high cobalt, low gold pyrite ...
Future metallurgical test work planned for the Bornite include an evaluation of the potential to recover cobalt from zones which are shown to be high in cobalt. Additional copper recovery test work will cover a broader range of grades 0.2 to 2 and continue to be focused on the flowsheet and processing philosophy shown in
Jun 22, 2020 In order to produce a cobalt-rich concentrate, an additional flotation stage to recover pyrite from the copper flotation tailings was added to the recovery circuit plan for Bornite. This added step to the recovery process demonstrates that roughly 60 percent of the contained cobalt can by recovered into pyrite concentrate containing 700 to ...
The value of the free copper, gold and silver in a copper concentrates for a copper smelter is depending on the recovery rate, LME copper price and LMBA gold and silver price. In this example the recovery rate for a copper smelter is 98.0. The value of free gold and silver is normally greater than the value of the free metal for copper.
process can treat nickelcobalt ores with copper recovery 14 by acid leaching, More detailed. Process for extraction of metal from an ore or concentrate ...
A process for the recovery of nickel andor cobalt values from a concentrate containing nickel or cobalt hydroxide comprises the steps of subjecting the concentrate to a leaching stage with an ammonium solution to produce a leach solution containing nickel andor cobalt values and a residue. The nickel concentration in the leach solution is controlled to a maximum value of about 3 to 25 gl ...
Feb 27, 2018 Over 91 pct of the cobalt and 84 pct of the copper were recovered from cobaltite concentrate by a process that involved 1 oxidative pressure leaching, 2 jarosite precipitation, 3 ferric-arsenate precipitation, 4 selective solvent extraction of copper with a mixed hydroxyomine-amine extractant, 5 electrowinning of copper from recirculating acidic strip liquor, 6 selective solvent extraction of cobalt from copper solvent extraction raffinate with an alkyl phosphinic acid extractant ...
cobalt recovery. No attempt was made to recover the copper. Because of unfavor able economic conditions, the mine was put on caretaker status in 1982. In 1979, the Bureau undertook labora tory research to develop a process to re cover cobalt and copper from a concen trate supplied by Noranda. The supplied 4Underlined fer to items at the end of numbers in
Dec 22, 2018 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. Other Preliminary Treatments
The converter slag is usually recycled to the furnace. Because of the highly oxidizing conditions in the converter, much of the cobalt is oxidized. The turbulent conditions cause entrainment of valuable metals as well. Of all the streams in a flowsheet of this sort, the converter slag is richest in cobalt.