passed to two parallel rougher scavenger flotation, and then were cleaned, while the overflows of the only second stage cyclones passed to the flotation column As a result, a substantial increase in the nickel recovery was achieved (Senior and Thomas, 2005) Other approaches proposed to improve flotation of pentlandite minerals...
With potassium amyl xanthate (PAX) addition, nickel oxide recovery increased after sulphidization with (NH4)2S Increasing the time of sulphidization (>5 min) decreased nickel oxide recovery...
The non magnetic ore is sent to a series of rougher, cleaner flotation cells, and produces a 31% copper concentrate The tailings from these cells is sent to another flotation cell, to recover the nickel, and the concentrate is combined with the 3% nickel concentrate to produce a 12% nickel concentrate Froth Flotation Process Mineral Processing &...
Since 2009 some five different variability studies have been conducted on project sampl Each of these studies revealed a link between rougher nickel recovery and the sulphur head grade Combined with locked-cycle cleaner data, the expected total nickel recovery as a function of sulphur is shown below Source: Blue Coast Metallurgy, 2020 Mining...
Figure 3-6: Feed and Product Deportment of Pentlandite Nickel by Size Fraction ,33 Figure 3-7: MMZ Plant Basic Flotation Block Flow Diagram ,37 Figure 3-8: MMZ Plant Rougher and Scavenger Flotation Nickel Grade-Recovery Curve 40...
The primary rougher concentrate feeds the copper/nickel separation column (column #1), producing copper concentrate and nickel-richtailings , (first bank of six small cells), pyrrhotite recovery , and pentlandite are much higher than that of pyrrhotite Thus, with its marginal pyrrhotite content, the primary rougher ....
The nickel-copper sulphide ore used in this study was supplied by Trojan Nickel Mine located in Bindura, Zimbabwe From the X-ray diffraction analysis, the main phases present in the ore were pentlandite (494%), pyrrhotite (412%) and quartz (46%), Fig1 The ore which was supplied in lumpy form was subjected to crushing and grinding...
Surface analysis by ToF-SIMS of the primary nickel rougher circuit showed that lower copper activation effects were likely responsible for the decreased flotation recovery of pyrrhotite in the ....
The primary rougher concentrate feeds the copper/nickel separation column (column #1), producing copper concentrate and nickel-richtailings , (first bank of six small cells), pyrrhotite recovery , and pentlandite are much higher than that of pyrrhotite Thus, with its marginal pyrrhotite content, the primary rougher ....
Method for improving selectivity and recovery in the flotation of nickel sulphide ores that contain pyrrhotite by exploiting the synergy of multiple depressants United States Patent 9387490 Abstract: A method of using the synergy of multiple depressants to improve the depression of iron sulphide without compromising the recovery of the ....
The flotation of gersdorffite in sulphide nickel systems--A single mineral study International Journal of ,, 2009 Ewen Silvester Download PDF Download Full PDF Package This paper A short summary of this paper 37 Full PDFs related to this paper READ PAPER...
pentlandite in the ore occurs as exsolutions in the pyrrhotite and the grain sizes ranges from 8 to 38µm about 25% of the nickel bearing pentlandite is medium grained and subhedral This kind of pentlandite occurs along the cracks of pyrrhotite or as inclusions in pyrrhotite The rest of pentlandite present is disseminated in the gangue matrix...
May 08, 2019· As such, improving nickel recovery from Mayville and demonstrating the potential for a quality marketable nickel concentrate was an important recommendation of the PEA There are ~105 million pounds of nickel in the Indicated category and 20 million pounds of nickel in the Inferred category in the current resource at Mayville (see table below)...
in the flotation of Potash, Pentlandite (Nickel), Copper, lead and Zinc sulfides and Precious metals (Gold, Platinum Group Metals) Function Froth flotation is a physico-chemical separation process based on a difference in hydrophobicity between the desired minerals and the unwanted minerals (“gangue”) like talc, serpentine, chlorite ....
Linking the pyrrhotite recovery to nickel recovery, with the 10 % increase in pyrrhotite recovery after the conditioning, about a tenth more of the pentlandite in pyrrhotite was recovered This also implies that there was about 14 % increased recovery of the total nickel content, given that 14 % of total nickel is in pyrrhotite (Table 1)...
May 09, 2018· Serpentine is a common magnesium-rich phyllosilicate that occurs as a main gangue mineral in sulfide nickel ores bearing pentlandite worldwide Serpentine, however, may cause a slime coating on the pentlandite surface and interfere with the flotation, which significantly reduces nickel recovery and grade...
Jul 13, 1998· We claim: 1 A process for the recovery of valuable sulfide copper, nickel and platinum group metal (PGM) mineral ores consisting of: providing a slurry of such ores; conditioning the slurry with one or more of suitable reagents including activators, collectors, frothers and depressants; subjecting the slurry to additional conditioning with a non-oxidizing gas comprising one or more members ....
Royal Nickel Corporation acquired the project in 2007 and has since taken the project from a scoping study in 2010 through to completing the feasibility study in July 2013 The Dumont deposit in a nickel deposit with the recoverable nickel contained in three minerals; pentlandite, haezlewoodite and ,...
Surface analysis by ToF-SIMS of the primary nickel rougher circuit showed that lower copper activation effects were likely responsible for the decreased flotation recovery of pyrrhotite in the ....
Primary sulphide minerals consist of pyrrhotite with lesser pentlandite (iron-nickel sulphide) and minor chalcopyrite Some bornite has been reported Interstitial and blebby sulphides, with grain sizes ranging from 1 to 4 mm, are evident in widespread disseminated zones seen in drill cor...
-DTP in the froth flotation of pentlandite containing ore INTRODUCTION Nickel sulphide mineral ores amounts to more than fifty percent of all commercial nickel (Senior et al, 1995) There is a growing demand for nickel and it is projected that the current nickel sulphide reserves may be depleted by 2030 (Tundermann et al, 1996)...
The pyrrhotite recovery versus pentlandite recovery and gangue recovery versus pentlandite recovery selectivity curves are shown in Figure 22 and , The nickel + copper grade in the primary rougher concentrate decreased when thickener overflow stream obtained in April 2019, June 2019 and August 2019 was used , For nickel recovery, the ....
The invention discloses a simple method for extracting pentlandite monominerals The method is characterized in that copper-nickel sulphide ore is used as a raw material, and a magnetic field of which the strength gradually increases is applied to the copper-nickel sulphide ore through a permanent magnet, so as to achieve stage-by-stage magnetic separation of the copper-nickel sulphide ore...
of nickel recovery, a pilot plant is set up in NML for the treatment of Sukinda Nickel Ore , compare the performance of the pneumatic cells against the Denver type cells, to improve the Ni , and 006 kg/tonne of pine oil a bulk rougher float analysing 208% Cu, 041% Ni and 263% S with respective recoveries of 964%, 430% and 855% was ....
MgO or Ni recovery as a function of water recovery in the rougher flotation of the pentlandite-lizardite mixture with and without the addition of F68, L44 or L121...
Nov 01, 1991· After cleaning the rougher con- centrate practically all of the pentlandite is recovered with about 20% of the pyrrhotite While this performance is routine in the plant, laboratory repro- duction of this high nickel recovery and low pyrrhotite recovery have proven to be illusive targets...
pentlandite in the ore occurs as exsolutions in the pyrrhotite and the grain sizes ranges from 8 to 38µm about 25% of the nickel bearing pentlandite is medium grained and subhedral This kind of pentlandite occurs along the cracks of pyrrhotite or as inclusions in pyrrhotite The rest of pentlandite present is disseminated in the gangue matrix...
Ore source Nickel distribution (%) Sulfur distribution (%) Pentlandite Pyrrhotite Pentlandite Chalcopyrite Pyrrhotite Sudbury 870 130 125 98 777 Thompson 948 520 201 15 784 Shebandowan 918 820 160 76 764 (Reprinted from Agar GE (1991) with permission from Elsevier Science) amounts of pyrrhotite in this way, the concomitant...
nickel recovery Below the 10 metre transition zone, pentlandite (Fe Ni) 9 s8 rapidly becomes the dominant nickel sulphide, although some alteration to violarite persists to a depth of 50 metr The degree of interlocking between pentlandite and pyrrhotite also becomes gradually less...
ALTA-2015-Mondo Minerals Nickel Sulfide Bioleach Project-Paper (1) stephen C C barnett Download PDF Download Full PDF Package This paper A short summary of this paper 31 Full PDFs related to this paper READ PAPER ALTA-2015-Mondo Minerals Nickel Sulfide Bioleach Project-Paper ,...