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The effects of mixtures of potassium amyl xanthate (PAX ...

Potassium amyl xanthate (PAX) and sodium isobutyl xanthate (SIBX) are traditional thiol collectors used in the bulk and selective froth flotation of nickel and copper sulfide mineral ores. Individually, they are not selective enough for economical low-grade nickel froth flotation. Therefore, more selective collectors or co-collectors are required.

The Effect of Oxidation on the Flotation Behaviour of ...

and flotation of remaining pyrrhotite and other sulphides. As may be noted from Figure I, the flotation rates of chalcopyrite and pentlandite are much higher than that of pyrrhotite. Thus, with its marginal pyrrhotite content, the primary rougher concentrate constitutes a suitable feed for the copper-nickel

The Effects of Water Recycling on Flotation at a North ...

Therefore, filtering this stream and sending the solids directly to copper-nickel separation in the flotation circuit will increase the copper and nickel recoveries to final copper and final nickel concentrates, respectively. Figure 20 illustrates the total DNA concentration in raw extracts from the process water. The DNA for side A flotation ...

Handbook of Flotation Reagents - MESA

Handbook of Flotation Reagents Chemistry, Theory and Practice: Flotation of Sulfide Ores by Srdjan M. Bulatovic • ISBN: 0444530290 • Publisher: Elsevier Science & Technology Books • Pub. Date: April 2007

Major Mines & Projects | Nova Operation

The nickel and copper flotation circuits have dedicated regrind, cleaning and re-cleaning processes to optimise metal recovery in each circuit. Plant tailings are pumped to a cemented paste back-fill plant with the paste product delivered underground via a borehole and underground distribution system, or plant tailings can be pumped to a ...

Projects — Missouri Cobalt

Froth flotation is particularly effective in recovering cobalt, nickel and copper minerals from above ground ore stocks and underground ores. The MMPP is designed to handle 300-360 tons per day of feed and can produce 1000-1500 tons per month of feedstock for the Hydrometallurgy Refining Process.

Probing the Effect of Water Recycling on Flotation through ...

These were specifically needed for the first 10 min to recover copper; immediately after 10 min of copper flotation, nickel flotation was initiated; 50 g/t of sodium iso-propyl xanthate (SIPX = 97% purity) was added into the cell as a nickel collector, 15 g/t CMC depressant and 10 g/t Nasfroth 240 frother were added, and at 25 min, 30 g/t SIPX ...

US6428604B1 - Hydrometallurgical process for the recovery ...

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.

Microwave Enhanced Recovery of Nickel-Copper Ore ...

A study describing the effect of microwave radiation, at a frequency of 2,450 MHz, on the processes of communition and flotation of a complex sulphide nickel-copper ore is presented. Ore communition has been investigated under standard radiation-free conditions and after ore treatment in a radiated environment as a function of ore size ...

US4283017A - Selective flotation of cubanite and ...

A process for beneficiating a finely ground ore containing sulfide minerals of copper and nickel by selective flotation to produce a copper concentrate and a copper-nickel concentrate comprises pulping the ore with water to form a slurry, conditioning the slurry with an aqueous solution of SO 2 (H 2 SO 3 ) equivalent to from about 2 to about 4.5 pounds of SO 2 per ton of dry ore for a time ...

Copper-Nickel Ore Processing - 911 Metallurgist

Copper and nickel were separated by solvent extraction with naphthenic acid in kerosene after partial neutralization of the iron-free liquors with ammonium hydroxide. Hydrogen sulphide and chlorine were used to remove zinc (and residual copper) and cobalt impurities respectively. Flotation. The ore was an altered basic rock containing ...

Azure scores early win as Andover reveals premium nickel ...

Azure has ticked off another milestone after initial metallurgical testwork of ore from its Andover project recovered up to 93.5% nickel and 94.7% copper. That this result was achieved using conventional sulphide flotation is an indication that future development would be …

Flotation of chalcopyrite, pentlandite, pyrrhotite ores ...

FLOTATION OF CHALCOPYRITE, PENTLAND1TE, PYRRHOTITE ORES 7 This is one of the instances where pentlandite is successfully floated from a high lime solution. The bulk copper-nickel concentrate produced at Cara- belle is pumped through a separate pipe line to the Copper Cliff mill with an excess of water.

Nickel and Cobalt Ores: Flotation - ResearchGate

The latter may be problematic when intergrown inclusions of pentlandite or nickel in solid solution are present (Rao, 2000). Rejecting hexagonal pyrrhotite may be achieved by (i) staged flotation ...

Copper-Nickel ores - Danafloat

Some plants use bulk flotation in an acid pH environment which is achieved using SO2 or H2SO4. Separation of the bulk concentrate copper and nickel minerals is generally accomplished by flotation of the copper from pentlandite and nickel-bearing iron sulphides which report to the flotation tails.

(PDF) A Review of the Flotation of Copper Minerals

Sulphide ores are the major sources of base metals like Copper, Lead, Zinc, Nickel and Cobalt. Beneficiation of. these base metal sulphide minerals is predominantl y through the froth flotation ...

Flotation of Nickel-Copper Sulphide Ore: Optimisation of ...

All the flotation test-work was done using the Denver laboratory machine with a 1.5l stainless steel flotation cell. The required mass of nickel-copper sulphide ore material ground to 70% passing 75 µm was weighed and placed in the flotation cell. This was followed by the addition of distilled water to about

US6569224B2 - Hydrometallurgical process for the recovery ...

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.

The effects of water recycling on flotation at a North ...

Overall, the data reveal that both sulphide and non-sulphide gangue grains reporting to the rougher concentrates had copper, nickel, and collector (PIBX) on their surfaces; suggesting that inadvertent flotation of both the pyrrhotite and non-sulphide gangue flotation is at least partly in response to activator and collector attachment.

Copper Flotation - Mineral Processing & Metallurgy

Although basic porphyry copper flotation and metallurgy has remained virtually the same for many years, the processing equipment as well as design of the mills has continually been improved to increase production while reducing operating and maintenance costs. Also, considerable attention is paid to automatic sensing devices and automatic controls in order to assure maximum …

Flotation Machine of Copper Zinc Lead Nickel Gold ...

Flotation Machine of Copper Zinc Lead Nickel Gold SelectionWeb: https:// flotation machine is ...

Current Status of Copper-Ore Processing: A Review ...

The testing of new types of flotation reagents such as thermomorphic polymers with functional groups of dithiophosphinate, thioamine, and thiosemicarbazide in the Norilsk Nickel laboratory demonstrates a 12–15% increase in the recovery of platinum, 3–4% for palladium, and 4–6% for copper and nickel from an ore which is rich in these ...

CHLORINATION OF COPPER AND NICKEL SULFIDE CONCENTRATES ...

The nonferrous metal chlorides may then be water leached, separated, purified, and electrolyzed to recover copper and nickel metals and to regenerate chlorine for recycling. AB - A chlorination process for treating metal sulfide flotation concentrates is described.

Enhanced methods for nickel recovery from low-grade ores ...

Copper-selective solvents can be chosen, and many steps are followed to get nickel and copper powder from the bleed. The following block flow diagram was shown in a paper by A. Agrawal et al. in 2012, demonstrating the steps of SX for nickel and copper recovery, Figure 5.

Development of a Combined Flotation and High Pressure ...

The present study focused on the re-processing of copper and nickel from mine tailings. In this work, recovery of copper and nickel from mine tailing by combined process of flotation and high pressure oxidative leaching were considered. In the first stage, effects of flotation parameters including collector type, collector dosage, and pH and pulp density were examined.

Eagle Nickel-Copper Mine, Michigan - Mining Technology ...

The processing plant has a capacity to process at a rate of 2,000t/d and employs conventional crushing, grinding and flotation methods to produce separate nickel and copper concentrates. The concentrates are stored in a building at the plant site and later transported to a number of smelter facilities in North America through existing rail ...

The role of surfactants in the electroflotation extraction ...

The effect of various surfactants on the physicochemical parameters (particle size and zeta potential) of the disperse phase of copper, nickel, and zinc hydroxides at concentrations of cationic, anionic, and nonionic surfactants of 2, 10, 50, and 100 mg/L at pH of 9.5–10.5 was studied. The efficiency of their electroflotation extraction into a flotation froth was determined in a laboratory ...

The effect of clay minerals on the process of flotation of ...

Effect of clay minerals concentration on copper recovery (empty symbols), and apparent viscosity (solid points) of flotation pulp: snobrite (circle), kaolinite (triangle), bentonite (square ...

Nickel Mines, Nickel Extraction Process, Nickel Recovery ...

Copper- Nickel Ore Flotation Process. When process copper-sulfide nickel ore, collector and frother will be used in order to better results. A basic principle of copper-sulfide nickel ore process is that it is better to let copper assimilate into nickel ore rather than the opposite. For it is easier to recovery cooper from nickel concentrate.

Process mineralogy of copper-nickel sulphide flotation by ...

Tel: +86-516-83995976; E-mail address: [email protected] Process mineralogy of copper-nickel sulphide flotation by a cyclonic-static micro-bubble flotation column CAO Yi-jun 1, GUI Xia-hui 1, MA Zi-long 1, YU Xiao-xia 2, CHEN Xiao-dong 2, ZHANG Xiu-pin 2 1 School of Chemical Engineering and Technology, China University of Mining ...