>

Flotation of Nickel-Copper Sulphide Ore: Optimisation …

2. 2. Flotation Procedure 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

>

The effect of a new polysaccharide on the depression of …

The effect of the depressant galactomannan (KGM) on the depression of talc and the flotation of a nickel–copper sulfide ore have been investigated through microflotation, batch flotation and industrial flotation tests, zeta potential and infrared spectrum measurements. The flotation results indicated that KGM had a straining …

>

The effects of ultrasonic wave on heterogeneous coagulation …

However, the application of ultrasonic technology in the flotation system of nickel sulfide ores has not been reported in detail, which will cause the changes of Ni and MgO grade and recovery in concentrates and improve the flotation of pentalandite. 3.1.1. Influence of ultrasonic site on flotation of pentlandite and serpentine

>

NICKEL AND COBALT ORES: FLOTATION

Most of the world's nickel is extracted from the mineral pentlandite, (Ni, Fe)9S8, which frequently oc-curs in ores containing predominantly pyrrhotite and various non-sulRdes, …

>

Upgrading nickel in laterite ores by flotation

In this study, upgrading nickel by flotation in three laterite ore samples, limonite, saprolite and intermediate, from different geology zones, was investigated. It was possible to upgrade the nickel grade in the saprolite sample by about 40% at more about 70% recovery using a hydroxamate collector at pH 10. These grade and recovery results …

>

Development and implementation of a new flowsheet for …

A key issue that remains for nickel flotation is the poor response at sizes below about 10 μm. Liberated pentlandite is known to float poorly at such sizes, even in relatively clean systems comprising simple mixtures with quartz (Senior et al., 1994). Not …

>

Water quality impact on flotation Response: A focus on …

The highest nickel flotation rate of 0.49 min −1 with R max = 72.80 % was observed for 60 HHH (IS = 0.476 M). These variations in both copper and nickel flotation rates attest to the differences in floatability of the …

>

The role of carboxy methyl cellulose in the flotation of a nickel …

However, Western Mining's Kambalda operation has found that nickel flotation is 2.5 times faster in circuit water than in the local potable water, and the presence of salts in the circuit water was found to be the reason for this increase in flotation rate. Tyurnikova et al [18] found that the addition of sodium chloride in the flotation of ...

>

Nickel and Cobalt Ores: Flotation

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 ...

>

Nickel and Cobalt Ores: Flotation

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

>

Full article: The Direct Leaching of Nickel Sulfide …

ABSTRACT. The extraction of nickel (Ni) from sulfide resources commences with flotation to produce a concentrate which is then smelted to produce a nickel-enriched phase called matte, and further …

>

Improving Nickel Recovery in Froth Flotation by …

To see the effect of closed water circulation on metallurgical performance, flotation tests were carried out with nickel concentrate thickener overflow water before and after the process of water …

>

(PDF) Flotation of nickel-copper sulphide ore

Average SN values for nickel flotation at three levels of parameters and delta statics. Code ̅ ̅ ̅ ̅ * Flotation parameter pH Collector dosage %Solids Depressant dosage Level 1 36.28* 35.13 34.83 34.53 Level 2 33.21 34.30 35.55* 37.17* Level 3 36.25 36.30* 35.35 34.03 Delta(max-min) 3.06 2.00 0.72 3.14 Rank 2 3 4 1 Optimum condition The ...

>

Process mineralogy of copper-nickel sulphide flotation by …

CAO Yi-jun et al Process mineralogy of copper-nickel sulphide flotation by … 787 Table 6 Liberation degree of copper-nickel sulphide (%) Two variety mineral interlocking Three variety mineral interlocking Sample Mineral Monomer With sulphide with iron oxide With gangue Total With sulphide With iron oxide With gangue Total Total …

>

Flotation of Nickel-Copper Sulphide Ore: …

Relative significance of flotation parameters (based on difference between max and min. values) indicates that pH has the most significant effect on the recovery of nickel, copper and cobalt ...

>

The ion flotation of copper, nickel, and cobalt using the

Heavy metal contaminated waters are a significant environmental hazard, which require novel treatment methodologies. Further, the metals which might be recovered from these streams have significant intrinsic value, if they can be collected and concentrated. This work demonstrates, for the first time, the use of surfactin, an …

>

The effects of mixtures of potassium amyl xanthate (PAX) and …

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.

>

Biosorptive flotation of nickel and aluminum ions from …

Air flotation is an efficient way to separate light particulates and oils from wastewaters. Nickel (II) and aluminum (III) removal by the combined biosorption and flotation process named biosorptive flotation was studied in laboratory scale. The Rhodococcus opacus strain was used to assist the removal of the toxic metals by …

>

The selective flotation of pentlandite from a nickel ore

The flotation results indicated that KGM had a straining influence on the depression of talc while had little effect on nickel minerals flotation. Compared with the depressant carboxymethyl cellulose (CMC) and guar gum, the KGM increased the nickel recovery dramatically, it not only negated the need for a talc removal process, but also …

>

Selective flotation of nickel sulfide ores

Thus, in flotation of the ores the practice of forming a bulk nickel-copper concentrate with rejection of pyrrhotite and gangue followed by further flotation to provide separation of nickel and copper has been adopted. In effecting nickel-copper separation, chalcopyrite is floated preferentially to pentlandite.

>

Upgrading of talc-bearing copper-nickel sulfide ore by froth flotation …

In this work, selective flotation of copper-nickel sulfide ore was achieved by using a selective depressant of sodium phytate. Microscale flotation results show that sodium phytate can selectively and effectively depress talc flotation, but has a minor effect on the floatability of chalcopyrite and pentlandite. In batch-scale flotation tests of ...

>

Challenges in processing nickel laterite ores by flotation

It should be added that segregation of laterite ores prior the flotation process has shown some improvement in upgrading nickel. The segregation process relies on …

>

AU536735B2

flotation nickel sulphide sulphide nickel Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Ceased Application number AU68322/81A Other versions AU6832281A (en Inventor Gordon ...

>

Pentlandite oxidation in the flotation of a complex nickel …

1. Introduction. Pentlandite flotation in Western Australia has historically been difficult due to a low nickel grade and large amounts of serpentine minerals (Senior and Thomas, 2005).The hypersaline water used in the flotation plants makes the traditional serpentine dispersants ineffective (Wellham et al., 1992).In the past 10 years, many …

>

Application of NARX Model in Nickel Flotation System

Nickel flotation is a very complex industrial process with hundreds of data parameters throughout the production of nickel ore flotation, and there is often a strong coupling between these parameters and variables, and even a lot of repetitive information between these variables. If these data are used directly in the modelling, the algorithm ...

>

Flotation and surface analysis of the nickel (II) oxide/amyl …

Flotation of nickel oxide with amyl xanthate showed an optimum pH range ca. 4 to 8. • The isoelectric point of NiO was ca. pH 8.1 and showed an acidic shift in the presence of AmX −. This, coupled with the flotation result, suggests that interaction between NiO and AmX is at least partly physical (electrostatic). •

>

Copper Nickel Flotation

The Bureau of Mines investigated the flotation responses of two copper nickel ore samples from the Duluth Complex with the objective of recovering bulk sulfide concentrates. One of the ores studied was taken from a test pit; the other was taken from a test shaft. The samples were quite similar except that the pit sample analyzed 0.35 pct …