bulk copper gold flotation flowsheet
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bulk copper gold flotation flowsheet

(PDF) BULK FLOTATION OF COMPLEX COPPER ORE

Flotation was carried out after 5 minutes of conditioning. Flotation time was 8 minutes. 18 Figure 3.1 General bulk flotation flowsheet. 3.3 Reagents NASCOL 201 (O-isopropyl ethyl thiocarbamate) and NASCOL 446 (di-isobutyl monothiophosphate) were used separately as a collector and NASCOL HEL as frother for the bulk and copper flotation. The dosage for each collector was set to 20, 30, and 40 g/t of ore and 10 g/t for NASCOL

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Copper Flotation - Mineral Processing Metallurgy

19/03/2017  The flotation of native copper ores is nearly always preceded by gravity concentration in jigs and tables not only because the combined process is more economical as regards costs, but also because the copper often occurs as large grains which flatten out during grinding and cannot be broken to a size small enough for flotation. The flow sheet depends on the mode of occurrence of the

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Flotation of Gold and Gold-Bearing Ores - ScienceDirect

01/01/2016  Flotation of Copper–Gold Ores. For the bulk flotation of copper minerals and gold from supergene copper ores, ... can often be overcome by changing the flowsheet and by adding supplementary collectors. In the treatment of copper–gold ores, mixed collector systems appear to be the norm and selective gold promoters are widely in use. The processing characteristics of copper–gold

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Flotation behaviour of gold during processing of porphyry ...

01/09/1997  Since the emphasis in ibis flowsheet is usually the recovery of copper at a high grade, pyrite, when present, is depressed, and gold recovery is not optimum. An alternative to this flowsheet is shown in Figure 11. This is a bulk sulphide~ flotation flowsheet followed by a regdw prior to the separation of the copper and pyrite. The effectivenes-,;~ of this flowsheet was studied on ore from

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Gold Flotation - Mineral Processing Metallurgy

13/07/2016  Lime should not be used because it is a depressor of free gold and inhibits pyrite flotation. Sodium sulphide is often helpful in the flotation of partly oxidized sulphides but must be used with caution because of its depressing action on free gold. Copper sulphate is frequently helpful in accelerating the flotation of pyrite and arsenopyrite. In rare instances sulphuric acid may be

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Cobalt Recovery From Polymetallic Concentrates

flowsheet to recover cobalt, bismuth, gold and copper from the NICO concentrates. This was possible because the viability of bulk sulphide flotation was demonstrated which in turn allowed concentration of the pay metals (cobalt, bismuth and gold). Further refinements to the flotation flowsheet allowed for establishment of the conditions

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Bulk - Monometallic Flotation Plant

Flowsheet 2, shown here, is widely used where straight flotation is the indicated method of treatment. This consists of a grizzly, followed by single stage crushing, and fine grinding in a closed ball mill-classifier circuit. The classifier overflow passes to a Conditioner, and then to a “Sub-A” Flotation Machine, where a high grade concentrate and low tailing are made. The flotation tailing passes

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Developing a Bulk Circuit Suitable for Chalcopyrite Pyrite ...

shown that the reagent consumption can be minimized by the configuration of the flowsheet. A simpler flotation circuit with lower operating and capital costs for treatment of such copper-gold-pyrite ores with an elevated pyrite head assay was sought in this work. After characterizing the ore, the objective was to apply bulk rougher flotation of both the copper minerals and pyrite for the ...

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INTERPRETATION OF FLOTATION DATA FOR THE DESIGN OF

flowsheet, reagent scheme and process control requirements. In order to illustrate the generic factors involved both in evaluating flotation flowsheets and designing the flotation circuits the development of two sulfide flotation projects, Hellyer and Cadia Mines, is compared and contrasted in the Case Studies provided later in the paper.

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DETERMINATION OF THE GOLD HEADS THE METALLURGY

The tailings from both tables were recombined and subjected to a simple copper flotation procedure to produce a salable copper concentrate, with good gold values. In Test l, the grind was coarse with a size distribution of SO'M) -65 mesh. In Test 2, the grind was finer at 8007o -150 mesh. The flotation procedures were similar except in Test l

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Flotation behaviour of gold during processing of

01/09/1997  The results obtained on Ok Tedi ore are shown in Table 1. The results obtained with bulk flotation were superior to those obtained by selective flotation, as seen in the higher copper and gold recoveries. Similarly, better metallurgical results were achieved on a pyritic, porphyry copper-gold ore from Peru using a bulk flotation pi-ocedure. Table 2 compares the results obtained with the two

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APPENDIX 2: CAPITAL AND OPERATING COST ESTIMATE GR ...

through a conventional froth flotation plant to produce a copper-gold concentrate. A block diagram showing the overall flow sheet is shown in Figure 1. This process design is compatible with the Kundip metallurgical domains but not compatible with the Trilogy metallurgical domains because of the elevated silver to gold ratio in these ores. The present process design can treat the low copper ...

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Flotation of Gold and Gold-Bearing Ores - ScienceDirect

01/01/2016  Flotation of Copper–Gold Ores. For the bulk flotation of copper minerals and gold from supergene copper ores, it is normal practice to add a xanthate as the primary collector and dithiophosphate as a secondary collector (Bulatovic, 1997). This combination gives satisfactory results in respect of copper concentrate grade and copper and gold recoveries. When pyrite is present in the ore, the choice of collectors will generally depend on the ratio of copper

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Handbook of Flotation Reagents - MESA

12.4.5 Flowsheet used in flotation of porphyry copper ores and copper-molybdenum separation ..... 264 12.5 Flotation Practice in Beneficiation of Sulfide Copper and Copper-Gold Ores ..... 265 12.5.1 Flotation of sulfide copper ores ..... 268

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DETERMINATION OF THE GOLD HEADS THE METALLURGY

The tailings from both tables were recombined and subjected to a simple copper flotation procedure to produce a salable copper concentrate, with good gold values. In Test l, the grind was coarse with a size distribution of SO'M) -65 mesh. In Test 2, the grind was finer at 8007o -150 mesh. The flotation procedures were similar except in Test l

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Froth Flotation Circuit Design And Basic Testwork ...

Froth flotation is a very important mineral concentration process that is used to recover a vast array of different minerals containing valuable commodities such as copper, lead, zinc, nickel, molybdenum, tungsten, silver, gold, phosphate and potash. In the flotation process, ore is ground to a size sufficient to adequately liberate desired minerals from waste rock (gangue); it is conditioned ...

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Developing a Bulk Circuit Suitable for Chalcopyrite Pyrite ...

A simpler flotation circuit with lower operating and capital costs for treatment of such copper-gold-pyrite ores with an elevated pyrite head assay was sought in this work. After characterizing the ore, the objective was to apply bulk rougher flotation of both the copper minerals and pyrite for the copper-gold-pyrite ore at natural pH. Hence, no lime or other pyrite depressants were required in

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Size dependent gold deportment in the products of copper ...

products of copper flotation and methods to increase gold recovery by G. Small, A. Michelmore, and S. Grano* Synopsis Plant survey data has shown that gold recovery through a specific copper concentrator was significantly lower than copper recovery. Size-by-size analysis revealed that this was due to poor recovery of +75 µm and –23 µm gold containing particles. In order to further ...

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Coupling mineralogy with physicochemical parameters in ...

first copper-cleaner realised by SFR’s (Staged Flotation Reactors), producing the final copper-gold concentrate that is dewatered, filtered and stocked for shipment. The tailing from the rougher section is fed into four D300-4 cells to form the Cu-selective scavenger flotation. The concentrate from this section

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The separation of arsenic from copper in a Northparkes ...

19/10/2007  A bulk copper–arsenic flotation concentrate is produced using standard flotation conditions. • The bulk copper–arsenic concentrate is reground and becomes the feed to the arsenic rejection step. While it is unknown at present whether liberation is limiting the complete depression of the NTCu, the use of a regrind mill at this stage would be useful in generating the reducing conditions necessary for the arsenic–copper

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Electrum - an overview ScienceDirect Topics

The type of collector and flow sheet configuration play an important role in gold recovery from these ores. With a flow sheet that uses bulk copper–lead flotation followed by copper–lead separation, the gold recovery is higher than that achieved with a sequential copper–lead flotation flow sheet. In laboratory tests, an aerophine collector type, in combination with xanthate, had a positive effect on gold recovery

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Flotation of Gold and Gold-Bearing Ores - ScienceDirect

01/01/2016  Flotation of Copper–Gold Ores. For the bulk flotation of copper minerals and gold from supergene copper ores, it is normal practice to add a xanthate as the primary collector and dithiophosphate as a secondary collector (Bulatovic, 1997). This combination gives satisfactory results in respect of copper concentrate grade and copper and gold recoveries. When pyrite is present in the

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Developing a Bulk Circuit Suitable for Chalcopyrite Pyrite ...

A simpler flotation circuit with lower operating and capital costs for treatment of such copper-gold-pyrite ores with an elevated pyrite head assay was sought in this work. After characterizing the ore, the objective was to apply bulk rougher flotation of both the copper minerals and pyrite for the copper-gold-pyrite ore at natural pH. Hence, no lime or other pyrite depressants were required in

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Froth Flotation Circuit Design And Basic Testwork ...

Froth flotation is a very important mineral concentration process that is used to recover a vast array of different minerals containing valuable commodities such as copper, lead, zinc, nickel, molybdenum, tungsten, silver, gold, phosphate and potash. In the flotation process, ore is ground to a size sufficient to adequately liberate desired minerals from waste rock (gangue); it is conditioned ...

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APPENDIX 2: CAPITAL AND OPERATING COST ESTIMATE GR ...

through a conventional froth flotation plant to produce a copper-gold concentrate. A block diagram showing the overall flow sheet is shown in Figure 1. This process design is compatible with the Kundip metallurgical domains but not compatible with the Trilogy metallurgical domains because of the elevated silver to gold ratio in these ores. The present process design can treat the low copper ...

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Size dependent gold deportment in the products of copper ...

products of copper flotation and methods to increase gold recovery by G. Small, A. Michelmore, and S. Grano* Synopsis Plant survey data has shown that gold recovery through a specific copper concentrator was significantly lower than copper recovery. Size-by-size analysis revealed that this was due to poor recovery of +75 µm and –23 µm gold containing particles. In order to further ...

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Lumina Gold Announces Improved Flowsheet For

21/01/2020  2018 PEA flow sheet – Utilizes gravity concentration, bulk rougher flotation, bulk cleaner scavenger flotation, bulk cleaner flotation, copper-molybdenum separation, and molybdenum cleaner flotation. No cyanide leaching was included. Flotation Plus Leaching – Evaluated the same equipment as the 2018 PEA flowsheet and added a 5,000 tonne per day CIL circuit. The circuit would be further ...

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(PDF) ASSESSING CENTRIFUGAL GRAVITY

The detailed combined gravitation-flotation process flowsheet is developed together with new reagent modes of flotation, which guarantee the obtaining of conditioned marketable products from old ...

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Copper-Molybdenum ores

The standard flow sheet consists of bulk sulphide flotation of copper and molybdenite while depressing gangue and iron minerals in the rougher and cleaner circuits. Recovery of copper is by standard flotation reagents identified in the copper ore flotation description.

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Flotation separation of chalcopyrite from galena by sodium ...

Fig. 2 Flowsheet of closed-circuit flotation test of copper/lead bulk concentrate same way used in micro-flotation tests. 1.0 g sample was settled in 20 mL reagent solution at pH 6.5 and agitated for 30 min, filtrated and flushed 3 times with the corresponding pH buffer solution. The treated sample was dried in a vacuum desiccator for infrared

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