Oxidative Dissolution of Low-Grade Ni-Cu Ore and Impact on Flotation …
The number of bacterial 16S rRNA gene copies in Process water and Ni thickener overflow varied between 0.5 – 3.3 x 10⁵ mL⁻¹, whereas the Flotation tailings showed two orders of magnitude ...
(PDF) The ion flotation of copper, nickel, and …
After flotation the remaining solution contained 0.5 mg/L Cu, 2.5 mg/L Pb, 2.6 mg/L Ni, 3.4 mg/L Cd, 1.5 mg/L Zn. Ion flotation method can be used to clean process waters produced in flotation ...
Ion Flotation of Co2+, Ni2+, and Cu2+ Using
Liu and Doyle [102] conducted the ion flotation study for the removal of Ni 2+, Co 2+, and Cu 2+ using nonionic surfactant namely dodecyldiethylenetriamine (Ddien). This investigation reported ...
Oxidative Dissolution of Low-Grade Ni-Cu Ore and Impact on Flotation …
This paper investigated the effect of mineral surface oxidation on the floatability of Kevitsa low-grade Ni-Cu ore. Physicochemical measurements, ethylene diamine tetra acetic acid (EDTA) extraction, and oxygen uptake experiments were carried out ... Oxidative Dissolution of Low-Grade Ni-Cu Ore and Impact on Flotation of Pentlandite.
Cu (II) and Ni (II) activation in the flotation of quartz, …
Activation of quartz flotation by Cu2+, Ni2+ in the sodium ethylxanthogenate (EX) system. During the flotation of metal sulfide minerals, due to the interference of …
Large Mechanical Flotation Cells – Advantages and Scale …
Utilising large-volume flotation cells brings the benefit of lower overall capital expenditure due to lower equipment costs, reduced overall footprint, reduced installation …
Oxidation of Complex Ni-Cu Sulphide Ores and its
Abstract. Oxidation of complex nickel-copper sulphides is a serious concern in their flotation. This paper addresses this issue through a study of batch tests using stockpile samples and fresh ...
Oxidative Dissolution of Low-Grade Ni-Cu Ore and Impact on Flotation …
The findings of this study may help the plant develop ways to enable a timely response to changes in recycled process water quality to prevent harmful impacts on pentlandite flotation. This paper investigated the effect of mineral surface oxidation on the floatability of Kevitsa low-grade Ni-Cu ore. Physicochemical measurements, ethylene...
16. Flotation of Nickel and Nickel–Copper Ores
The bulk of world cobalt output usually arises as a by-product of extracting other metals, mostly nickel (Ni) and copper (Cu), from a wide variety of deposit types mostly Cu-Co sediment-hosted ...
Large Mechanical Flotation Cells – Advantages and …
The Kevitsa beneficiation process consistsof crushing, grinding, sequential Cu, Ni and Sulfide flotation, thickening and finally filtration of Cu and Ni concentrates. The TankCell e500 flotation cell was installed in front of the existing Curougher -scavenger flotation bank making it the first cell of the bank.
Removal of Cu 2+ and Ni 2+ from Aqueous Solution using …
Tin oxide, SnO 2, nanomaterial was synthesized and tested for the removal of Cu 2+ and Ni 2+ ions from aqueous solutions. Various parameters for the binding were investigated in batch studied, which included pH, time, temperature, and interferences. In addition, isotherm studied were performed to determine the maximum binding capacity for both Cu …
Atomic Absorption Spectrometry Determination of Cd, Cu, Fe, Ni…
The limit of detection (LOD) of each analyte obtained by FAAS or ETAAS is determined: flotation/ETAAS for Cd is 0.010 µg/L, for Cu 0.034 µg/L, for Ni 0.305 µg/L, for Pb 0.290 µg/L, and for Tl ...
Water quality effects on flotation: Impacts and control of …
The circuit being a sequential Cu-Ni flotation requires limiting the flotation of Ni into the Cu concentrate. This is achieved by using a Cu selective collector (Aerophine) and high pH in the final cleaning stage. In winter recycling rates are at their highest owing to less demand of raw water for the mill motor cooling systems.
Flotation of Nickel-Copper Sulphide Ore: Optimisation …
The Taguchi method was therefore, selected to determine the optimum conditions for maximising the flotation recovery of Ni, Cu and Co from a nickel-copper sulphide ore. The effect on flotation performance of various parameters such as pH, collector dosage, % solids and depressant dosage at different levels was investigated.
Effect of Cu(II) and Ni(II) adsorption on serpentine flotation
The rapid flotation system was evaluated for beneficiation with a western porphyry copper ore containing 0.67% copper and with a phosphate-bearing amine flotation tailings sample containing 9.5% ...
Novel Concentration Process for Platinum Group Metals in
As shown in Figure 3(a), the sulfurization of Cu by sulfur at 850 K (577 °C) produces copper (I) sulfide (Cu 2 S) under low-oxygen partial pressure and copper (II) sulfate (CuSO 4) under high-oxygen partial pressure.During the flotation process, Cu 2 S floats in the flotation solution, whereas CuSO 4 dissolves in the solution. In the latter …
Activation of quartz flotation by Cu2+, Ni2+ in the sodium
The presence of a nickel sulphide mineral – millerite (β-NiS) has a significant impact on the Cu/Ni flotation separation efficiency in the plant operations. In this study, the feasibility of ...
Cu (II) and Ni (II) activation in the flotation of quartz, …
Cu (II) and Ni (II) activation in the flotation of quartz, lizardite and chlorite. DOI: 10.1016/j.minpro.2004.12.002. Authors: D. Fornasiero. John Ralston. University of …
Bioleaching of a Complex Co-Ni-Cu Sulfide Flotation …
The copper sulphide and part of malachite and azurite were enriched by flotation. The ... [Show full abstract] concentrate grade of copper from flotation was 25.04% with the recovery rate of 57.25 ...
Ion flotation for removal of Ni(II) and Zn(II) ions from wastewaters
In optimal conditions, the recovery of Ni (II) and Zn (II) ions were 88% and 92%, respectively at 60 min. This study showed that the use of ion flotation is a very effective method for Ni (II) and Zn (II) ion removal from industrial wastewaters. The flotation time in achieving an optimum recovery of Zn (II) ions is shorter than that for Ni …
Differential flotation of chalcopyrite, pentlandite and …
A new method for the treatment of Ni-Cu sulphides ores from the Sudbury region by differential flotation is presented. The method exploits the ease of chalcopyrite floatability in complete or virtual absence of collector, but in the presence of sulphur dioxide, an effective complexing agent such as diethylenetriamine (DETA) and a frother.
Inhibiting effect of citric acid on the floatability of …
The flotation results showed that Cu2+ and Ni2+ could remarkably activate the flotation of serpentine when the pH value was more than 6, however, this activation could be …
New perceptions into the detrimental influences of serpentine on Cu-Ni
In the flotation practice of a copper sulfide ore with magnesium aluminum silicate as gangue minerals, the tests on the relationship between the rheological property of the flotation pulp and the ...
Oxidative Dissolution of Low-Grade Ni-Cu Ore and …
Based on ORP measurements of the nickel flotation feed, good nickel flotation takes place in a moderately oxidizing (75–170 mV) and alkaline (9.2–9.7 pH) …
Effect of calcium and thiosulfate ions on flotation selectivity …
Effect of calcium and thiosulfate ions on flotation of a Ni–Cu ore was investigated. The ions improved the flotability of sulfides at the normal process pH after grinding in steel mill. Calcium activated especially nickel and copper sulfides when the galvanic effect of mill iron was effective. The UV/Vis measurements showed that calcium …
Separation of Copper-Nickel by Flotation and Magnetic Methods
At the INCO (International Nickel Co.) operation in Sudbury, Ontario, further separation of nickel from copper is accomplished by application of mineral dressing techniques to slow-cooled nickel mattes. These mattes contain about 50 pct Ni, 30 pct Cu, 20 pct S, and <1 pct Fe. They consist of grains of chalcocite (Cu2S) in a matrix of ...
Activation mechanism of serpentine by Cu (II) and Ni (II) …
The activation mechanism of serpentine by Cu2+ and Ni2+ in copper-nickel sulfide ore floatation was investigated with pure mineral flotation tests, Zeta potential measurement, IR spectrum ...
Cu–Ni processing improvements at First Quantum's Kevitsa …
Cu is floated first with a Cu selective collector and a high pH (>12) is employed to reduce Ni flotation to copper concentrate. The circuit has a roughing and scavenging stage with the concentrates from these banks reporting to the cleaning circuit. There are 4 stages of cleaning in total with the column cell as the final cleaning stage. …
Influence of depressant foenum-graecum on the flotation …
The Cu/Ni sulfide ore for bench-scale flotation was from the Yanbian Copper–nickel Mine. The results of chemical analysis of the ore are listed in Table 2.It showed that the main composition of the ore for bench-scale flotation is as follows: 27.81% MgO, 38.91% SiO 2, 12.38% Fe 2 O 3 and 6.02% CaO, which only contained 0.20% Cu, …
Oxidative Dissolution of Low-Grade Ni-Cu Ore and Impact on Flotation …
Copper and nickel minerals are recovered by flotation from different sections of the Kevitsa Ni-Cu-(PGE) deposit. The process flowsheet and ore mineralogy of the Kevitsa Mine were well documented by Musuku et al., 2016 [ 1 ], and accordingly, the main sulfide minerals are chalcopyrite, pentlandite, and pyrrhotite.
