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Development of copper recovery process from flotation

15/06/2018· Therefore, this research aims to develop a copper recovery process from flotation tailings using high‒pressure leaching (HPL) followed by solvent extraction. Over 94.4% copper was dissolved from the sample (CuFeS 2 as main copper mineral) by HPL in a H 2 O media in the presence of pyrite, whereas the iron was co‒dissolved with copper according to an equation given as C Cu = 38.40 × C

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The recovery of copper, by flotation, from calcium-ferrite

01/04/2004· In addition, the total copper recovery in the flotation stage decreased after grinding from 71% to 64%. These results suggest that using a finer screen in the test after grinding might have yielded a higher total copper recovery. To verify this the flotation tail from test SL29 was sized and each fraction assayed. The distribution data for copper is presented graphically in Fig. 2 and this

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Copper recovery improvement in an industrial flotation

Obtaining high recovery in copper flotation plants has been always under investigation in recent years. Misreported copper into tailing dramatically declines copper recovery. This study aims to find the possible reasons of copper loss to tailing and present the methods to improve the performance of the Sarcheshmeh copper plant flotation circuit. This work was performed in two phases. In the

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A New Collector for Effectively Increasing Recovery in

The copper oxide flotation recovery increased from 79.67% to 83.38%, and the grade also raised from 18.08% to 18.14% after using the staged flotation technology. This technology was quite effective for the recovery of copper oxide at the Dishui Copper Processing Plant, successfully increasing the gross profit by about 1.6 million US $ per year.

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Evaluation of the possibility of copper recovery from

10/01/2018· The present research aims at recovering copper by reprocessing of tailings at China Molybdenum Co. Ltd. (CMOC) from bench-scale to industrial tests. It focuses on the determination of the reagents' dosage and pulp concentration that enables to obtain the highest recovery of copper by flotation of the studied tailings. Based on the results of

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A New Collector for Effectively Increasing Recovery in

A new method, staged flotation for effectively increasing the recovery of ultra-fine copper oxide ore with a new type of collector (ZH-1, C3-5 carbon chain xanthate) is proposed for the first time. The flotation process and mechanism were examined by flotation tests, entrainment rate analysis, laser particle size experiments and microscopic imagery as well as economic feasibility analysis.

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Enhancing the flotation recovery of copper minerals in

01/01/2020· Percent increase in the flotation recovery of copper after regrinding. Figures 9 and 10 show clearly that there was a marked increase in the overall recovery of copper after the tailings of the 1 st stage flotation were milled to 90% passing 45 microns and floated. In the case of conventer and mixed slag, increases of over 10% in the recovery were recorded when both FC4146 and FC7245

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Copper recovery improvement in an industrial flotation

Obtaining high recovery in copper flotation plants has been always under investigation in recent years. Misreported copper into tailing dramatically declines copper recovery. This study aims to find the possible reasons of copper loss to tailing and present the methods to improve the performance of the Sarcheshmeh copper plant flotation circuit. This work was performed in two phases. In the

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[PDF] Pyrite-gold recovery in copper rougher flotation

Fine regrinding of the copper rougher tails increased both gold and copper recoveries in the subsequent flotation stage, due to improved liberation. The highest gold recovery from the rougher tailings (45%) was achieved without aeration of the reground product. However, in these conditions poor rejection of pyrite was achieved, and the concentrate gold grade was low (1.3 g/t, versus 2.3 g/t

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[PDF] Recovery of copper from the copper slag and

Copper extraction from the slag was typically found to be twice as high as that from the slag flotation tailings. Hydrogen peroxide was determined to be the best lixiviant. Thus, copper and iron extractions were 63.4% and 48.6%, respectively, when leaching the slag with 3 M H2O2, after 120 minutes of reaction at room temperature. Copper dissolution was generally found to be the dominant

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The recovery of oxide copper minerals from a complex

01/03/2017· The increase in solids recovery after the introduction of NaHS, whether by slug sulphidisation or CPS, can be partially attributed to the recovery of oxide minerals which were not recovered during flotation with SIBX only. The grade-recovery results are summarised in Fig. 2. In the case of slug sulphidisation, Cu recovery increased with increasing NaHS addition. The same

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A New Collector for Effectively Increasing Recovery in

A new method, staged flotation for effectively increasing the recovery of ultra-fine copper oxide ore with a new type of collector (ZH-1, C3-5 carbon chain xanthate) is proposed for the first time. The flotation process and mechanism were examined by flotation tests, entrainment rate analysis, laser particle size experiments and microscopic imagery as well as economic feasibility analysis.

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(PDF) The recovery of oxide copper minerals from a

The outcomes obtained in this work were promising, achieving copper extraction of 70% in the leaching stage, precipitation of copper sulfides that surrounds 90%, and 75% of recovery by flotation. View

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Flotation Solutions Maximizing Mineral Recovery Ecolab

The goals included improving recovery through their copper flotation circuit, increasing productivity, and ultimately reducing the total cost of operations while ensuring a safe production environment. By introducing FrothPro 507, a specific product in our diverse portfolio of frothers, Nalco Water helped the mine save on maintenance and increase recovery by 2,526 tons per year, amounting to

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Lime in Flotation and Recovery Processes Graymont

Both quicklime and hydrated lime are widely used in the flotation or recovery of non-ferrous metals, including copper, zinc, nickel and lead-bearing ores. Lime is used extensively in the recovery of gold and silver. Ores, either run-of-mine, milled, autoclaved or roasted, are combined with lime and a cyanide solution. The cyanide dissolves the gold and silver. Lime maintains proper pH in the

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30% Total recovered cobalt of 73-79% with flotation

Total recovered copper of 77-85% with flotation producing premium grade concentrates of ≈30% Cu Total recovered cobalt of 73-79% with flotation producing concentrates of 2.3 5.3% Co Gold not recovered via flotation amenable to cyanide leach process Results provide a strong basis for further flowsheet optimisation and geometallurgical test work Artemis Resources Limited (“Artemis

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