16. Flotation of Nickel and Nickel–Copper Ores
Sequential flotation in industrial practice is used in cases where the copper in the head is much greater than nickel (4–5 times). ... (particle size, milling time, pH and flotation cell) to ...
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 Cu and 0.11 pct Ni and the …
A HIGH RATE MECHANICAL FLOTATION CELL FOR BASE …
A HIGH RATE MECHANICAL FLOTATION CELL FOR BASE METAL APPLICATIONS E.B Wasmund1 – Global Managing Director H. Thanasekaran2-Senior Process Engineer N.S. Yap2-Process Engineer E.Yan3-Technical Director M. Mankosa3 – Executive Vice President - Global Technology 1 Eriez Flotation Division Canada 7168 Venture Street, Delta, BC, Canada, V4G 1H6
Enhancing nickel grade and recovery with counter-current …
The recovery and concentration of the nickel sulphide mineral, pentlandite, present several challenges due to its relatively slow flotation, leading to excessive hydrophilic gangue …
Repurposing flotation capacity at Mt Keith nickel concentrator
Mt Keith concentrator treats low grade disseminated nickel sulfide ore supplied from the adjoining open pit mine. It is a traditional crushing, two-staged closed circuit grinding circuit (SAG & Ball Mills), followed by a complex split-size rougher, scavenger and cleaner flotation circuit._x000D_ In 2016, 10.5 Mt was milled, at an average head grade of 0.54% Ni, yielding 35 000 nickel metal ...
The selective flotation of pentlandite from a nickel ore
Bulk flotation An efficient procedure for nickel recovery is to combine copper sulphate to activate pentlandite with guar gum to depress talc. This is the method which has been used for the flotation of nickel ores in industry and which we have termed the "standard bulk float". A selection of results for this ore is given in Table 3.
Optimisation of Reagent Addition during Flotation of a …
Page iii froth stabilising gangue, which resulted in reduced recovery of the valuable minerals. Therefore, a careful balance must be maintained in order to maximise nickel recovery.
NICKEL AND COBALT ORES: FLOTATION
gangue minerals, thus leading to nickel loss. Flotation Practice in Nickel Sulde Deposits Nickel sulRde minerals such as pentlandite can, in general, be separated from their gangue by Sotation using a thiol group of collectors like xanthates and alkyl dithiophosphates in the presence of variety of activators, depressants and dispersants. Since ...
MILESTONES IN THE IMPROVEMENT OF …
Replacement of Agitair cleaner banks with 6 x 50m3 Outokumpu flotation tank cells. This section discusses the interventions that were undertaken in order to improve the nickel recoveries.
Schematic of flotation cells with (a) high and (b) low cell …
Download scientific diagram | Schematic of flotation cells with (a) high and (b) low cell aspects ratio (Tabosa from publication: Hydrodynamics of froth flotation and its effects on fine and ...
Flotation Machines in Brazil — Columns Versus …
2004, utilises large size tank cells (20 cells of 160 m3) in the rougher and scavenger of the cleaner tailings stages and columns (six cells 4.27 m in diameter and 14 m in height) in the cleaner
Flotation Cell Design: Application of Fundamental …
cells and details of this design will be discussed later in this article. The top section of the disc connects to a drive shaft which in turn connects to the pulley/gear-motor drive assembly. The impeller is located in the centre of the cell cross-section with its II/FLOTATION/Flotation Cell Design: Application of Fundamental Principles 1505
Challenges in processing nickel laterite ores by flotation
Researchers have tried to improve nickel laterite flotation recovery by using a number of feed preparation techniques. ... Head grade Ni grade @ recovery Ref. Brazil: Synthesised 2,3 octanedione dioxim as collector ... One option to overcome this problem is using new flotation cells such as reactor–separator which has more probability of ...
The Use of the Jameson Cell to Improve Flotation …
The Jameson Cell is a high intensity flotation cell in which pulp and air are brought together in a co-current descending flow in a vertical tube called the downcomer. The pulp is introduced into the downcomer through a slurry lens orifice to produce a high velocity jet that generates violent mixing and fine bubble size.
Flotation Bank
The analysis, nevertheless, does confirm why circuits are used in flotation: they increase selectivity between floatable particles (in addition to cleaners damping entrainment, Section 12.10.2).The benefit of the circuit, the circulating load, is also the "cost": circulating loads mean increased stage (i.e., cell) volume is required.
Flotation Cell | Working Principle, Type, Influencing Factors
The flotation cell separates hydrophobic minerals and hydrophilic minerals by cooperating with chemicals, so as to achieve the purpose of beneficiation. Good flotation benefits depend on excellent…
Fine and ultrafine flotation with the Concorde Cell TM
The Concorde Cell is a high-intensity pneumatic flotation cell dedicated to fines and ultrafines. Its development by Professor Graeme Jameson and later on by was driven by two considerations: a reduction in bubble size and an increase in the shear rate and energy dissipation rate increases the particle–bubble collision and attachment efficiencies of fine …
Challenges in processing nickel laterite ores by flotation
Researchers have tried to improve nickel laterite flotation recovery by using a number of feed preparation techniques. A summary of the nickel grade upgrade using flotation reported in the literature is pre-sented in Table 1. It can be seen that only minor nickel upgrades have been reported. Thus, the challenge of processing nickel laterite ores
Flash Flotation Cells
Flash Flotation Cells Flash Flotation offers a unique opportunity to improve performance in many mineral processing circuits. Successes in metal recovery of the gold, lead, nickel, copper, and platinum group of metals are well documented.
The Application of High Intensity Flotation Technology …
Eriez's StackCell is a relatively new froth flotation technology, targeted at fines and slimes particles. It was developed in light of the engineering and design challenges that are …
Head Flotation Cells B Nickel
A 2 m diameter REFLUX™ Flotation Cell was fed at roughly 210 m 3 /h, equivalent to a flux of 1.9 cm/s, about twice the maximum rate used in conventional flotation cells. The coal feed slurry had 59–64 wt% head ash and nominal size range −0.100 mm (Sauter mean size 0.004 mm).
Enhancing nickel grade and recovery with counter-current …
The REFLUX™ Flotation Cell (RFC™) offers the potential for a significant hydrodynamic advantage over conventional flotation. Much of this advantage is due to replacement of the pulp and froth phases with a concentrated bubbly zone, which in turn supports more intense counter-current washing by permitting a powerful and effective positive ...
BENEFITS OF HIGH INTENSITY FLOTATION AT THE HEAD …
A number of Australian base metal flotation circuits feature a reverse flotation stage at the head of the circuit. Test work and plant operating data has shown that the use of a Jameson Cell in the …
Improving flotation hydrodynamics to maximize nickel …
RFC™ demonstrated improved efficacy in upgrading slow floating minerals. The REFLUX™ Flotation Cell (RFC™) was used to investigate the flotation of a nickel tailings …
The Application of High Intensity Flotation Technology …
The Application of High Intensity Flotation Technology at Mt Keith Nickel Concentrator L Hussey1, H Thanasekaran2 and J Kohmuench3 1. MAusIMM, Plant Metallurgist, BHP Nickel West, 125 St Georges Terrace, Perth, WA 6000. Email: liam.hussey@bhpbilliton 2. MAusIMM, Flotation process Engineer, Eriez Flotation Division Australia,
Improving flotation hydrodynamics to maximise nickel …
This study aimed to investigate new hydrodynamic approaches to improve nickel flotation, focusing primarily on unrecovered nickel from a Western Australian tailings stream. …
On-line determination of residual collector …
The mixture is then fed to an aggregated flotation cell where the separation on desired particles takes place. [2, 8] A picture of a flotation cell is presented in Figure 2. Figure 2 A flotation cell where: A Flotation cell, a froth exit point, B Minerals attached to air bubbles, b Froth layer, c Pulp, d Cell agitator [2]
LEINSTER NICKEL CONCENTRATOR – FLOTATION …
flotation circuit through the targeted upgrading of cells combined with additional process controls. This included replacing old flotation mechanisms with the latest technology and installing the …
The Effect of Oxidation on the Flotation Behaviour of …
In this paper, the flotation behaviour of nickel-copper ores processed in the Sudbury area is discusse~ with emphasis on the effect of oxidation on individual minerals, pnmarily pyrrhOlite. …
A NOVEL APPROACH TO FLOTATION CELL DESIGN
the mesh with 280,000 elements for an Outotec 150-m3 cell used in nickel flotation. Figure 1. CFD mesh of Outotec 150-m3 cell with rotor, stator, launders, inlet and outlet.