قائمة الطعام
The flotation by surface sulphidisation of the oxidized copper-cobalt-bearing ore from Kimpe (1.97% Cu; 0.66% Co) was studied in order to evaluate its behavior by the analysis of its most ...
WhatsApp: +86 18221755073
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.
WhatsApp: +86 18221755073
1. Introduction. Wet milling in ball mills followed by flotation is the general practice employed in the beneficiation of copper sulphide ores in which the major minerals of commercial significance typically are chalcopyrite (CuFeS 2), bornite (Cu 5 FeS 4), covellite (CuS) and chalcocite (Cu 2 S). The flotation response of ground minerals can …
WhatsApp: +86 18221755073
Proceedings of the World Congress on Engineering and Computer Science 2011 Vol II WCECS 2011, October 19-21, 2011, San Francisco, USA Effect of pH on the Recovery and Grade of Base Metal Sulphides (PGMs) by Flotation Edson Muzenda, Member IAENG, Ayo S. Afolabi, Member, IAENG, Ambali S. Abdulkareem and Freeman Ntuli …
WhatsApp: +86 18221755073
addition on flotation performance of a nickel sulphide ore. The objectives of the study were to: 1. develop an understanding of the effects of collector and depressant …
WhatsApp: +86 18221755073
To elucidate the effects of particle size, grain size and mineral association on the flotation of sulphides, flotation products were first sized using a cyclosizer into three size intervals: +20, −20, +10 and −10 μm, and were then characterised using the Mineral Liberation Analyser (MLA). 3. Results3.1.
WhatsApp: +86 18221755073
SYNOPSIS. This paper presents both the fundamentals of sulphide mineral flotation and the practical aspects of sulphide ore flotation.
WhatsApp: +86 18221755073
Flotation results showed that the combined effect of Ca(ClO) ... a combined inhibitory effect of calcium hypochlorite and dextrin on flotation behaviors of pyrite and galena sulphides was investigated through microflotation experiments, adsorption measurements and X-ray photoelectron spectroscopy (XPS) analysis. ... Zhangyuan Ni: …
WhatsApp: +86 18221755073
The extraction of nickel from sulfide ores typically commences with comminution and flotation to produce a sulfide concentrate, which is subsequently smelted and pyrometallurgically …
WhatsApp: +86 18221755073
Pentlandite [(Fe,Ni)9S8] is the primary source of nickel and an important carrier of palladium and rhodium. ... Flotation of fresh nickel-copper sulphides was compared with that of mine fines ...
WhatsApp: +86 18221755073
In this study, the feasibility of using corn dextrin as a representative of polysaccharides to depress millerite (β-NiS) in the differential Cu-Ni sulphides flotation at pH 9 and pH 12 was examined.
WhatsApp: +86 18221755073
The influence of grinding chemistry on the flotation behaviour of sulphides minerals has been widely studied. However, its influence on partially oxidised sulphide ores is not well documented ...
WhatsApp: +86 18221755073
Fundamental aspects of differential flotation of sulphides with the use of polysaccharides are currently under investigation at the University of British Columbia. The plant tests to separate the bulk chalcopyrite-galena concentrate have been carried out at Boliden and are discussed in the second part of this paper (Bolin and Laskowski, 1991 ...
WhatsApp: +86 18221755073
Abstract. 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 effectivecomplexing agent such as diethylenetriamine (DETA) and a …
WhatsApp: +86 18221755073
Potential Use of Oxygen Depleted Air In Nickel Sulphide Flotation Bianca Henriques Leal Andrade Geosciences, master's level (120 credits) 2018 Luleå University of Technology
WhatsApp: +86 18221755073
In separation of base metals (eg, Cu, Pb, Zn, and Ni) by froth flotation of their minerals, usually sulphides, the attachment of these mineral particles, after hydrophobic collector addition, to ...
WhatsApp: +86 18221755073
This study presents results of bench flotation tests on pentlandite-pyrrhotite separation using a Ni-Cu sulphide ore sample, where the crystal structure of pyrrhotite is predominantly hexagonal (e.g., 90–95%). ... exhibiting a strong joint action in the flotation of complex Ni-Cu sulphides with a pyrrhotite problem. 3.3. Ni-Cu grade-recovery.
WhatsApp: +86 18221755073
(Ni, Cu or Co) recovered. The SN ratio for this scenario was determined using: SN = -10 [ ∑ ( )] (1) Where n is the number of repetition of experiments, and y i this the response value (recovery) of the i experiment. 2. 2. Flotation Procedure All the flotation test-work was done using the Denver laboratory machine with a 1.5l stainless steel ...
WhatsApp: +86 18221755073
The sulphides in the underflow could then be processed by bulk flotation at 25–30% solids in the hypersaline water 1 at the site to ... This study applied an alkaline glycine-based leaching method to selectively recover Ni and Co from a pyrrhotite-rich flotation slime and investigated the deportment of impurities. Leaching variables ...
WhatsApp: +86 18221755073
Our work provides a mechanism for the atmospheric release of large amounts of sulphur, and contradicts the widely held assumption that dense sulphide …
WhatsApp: +86 18221755073
The more typical is isomorphism Ni↔Fe and less typical is Ni↔Co and Fe↔Co, though cobalt varieties also occur occasionally. ... The scheme is based on collective flotation of all sulphides using isobutil xanthate in the experiments. We proceeded from the amount of reagents (xanthate—170 g/ton, aerofloat—120 g/ton, …
WhatsApp: +86 18221755073
Ni grade as a function of Ni recovery in the cleaner flotation of the pentlandite-lizardite mixture with and without the addition of F68, L44 or L121. ... flotation of nickel sulphides is ...
WhatsApp: +86 18221755073
a finely disseminated nature, most of the loss in the important role in determining the flotation of fines of . flotation of the 8SOfo -44-jlm feed is in the -Si.lm size these minerals. fraction.1 The problem of loss of finely disseminated " values during the processing of sulphides has been ~-'[MA11( ~ROP£R11£S OF FIN[S
WhatsApp: +86 18221755073
In the Merensky reef in particular the base metal sulphides constitute around 1% by mass of the ore. The major sulphides and their typical contents are pyrrhotite (Fe 1 − xS: ~ 45%), pentlandite ((Fe,Ni) 9 S 8: ~ 32%) and chalcopyrite (CuFeS 2: ~ 16%). Minor amounts of pyrite (FeS 2) and other sulphides also occur. In the case of pyrrhotite ...
WhatsApp: +86 18221755073
The extraction of nickel (Ni) from sulfide resources commences with flotation to produce a concentrate which is then smelted to produce a nickel-enriched …
WhatsApp: +86 18221755073
optimum conditions for the flotation of nickel, copper and cobalt from a nickel-copper sulphide ore. The parameters investigated include collector dosage, percentage solids, …
WhatsApp: +86 18221755073
The flotation of nickel sulphides is usually difficult due to low surface hydrophobicity compared to other sulphide ... about 0.6% Ni grade was in the feed (Peng and Seaman, 2011). After grinding ...
WhatsApp: +86 18221755073
DOI: 10.1016/J.MINENG.2021.107139 Corpus ID: 238685155; Selective depression of millerite (β-NiS) by polysaccharides in alkaline solutions in Cu-Ni sulphides flotation separation
WhatsApp: +86 18221755073
ELSEVIER Int. J. Miner. Process. 43 (1995) 209-234 HITERnlITIOIliBaL JOURML OF mlnERgt PRO(ESSln6 The selective flotation of pentlandite from a nickel ore G.D. Senior, W.J. Trahar, P.J. Guy CSIRO Division of Mineral and Process Engineering, Box 312 Rosebank MDC, Clayton, Vic. 3168, Australia Received 14 June 1994; …
WhatsApp: +86 18221755073
The process exploits the particle size dependence of nickel sulphide flotation and the different ways that pH change and pulp density influence the response …
WhatsApp: +86 18221755073حقوق النشر ©2000- 2024 شركة شنغهاي زينيث
