flotation of ni sulphides

Flotation of Nickel-Copper Sulphide Ore: Optimisation of ...

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

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flotation of ni-sulphides - dierenartshoffmann.be

flotation of ni-sulphides greenrevolution.org. flotation of ni-sulphides. flotation of ni-sulphides. Differential flotation of chalcopyrite, pentlandite and pyrrhotite in Ni A new method for the treatment of Ni-Cu sulphides ores from the Sudbury region by differential flotation is presented.

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Selective sulphidation and flotation of nickel from a ...

01/12/2013  It was found that the nickel sulphides responded to flotation at pH 9 with PAX and TETA additions and that maximum grades of between 6 to 8% were achieved with the average cumulative grade of the nickel concentrates having values of between 4 and 5 wt.% nickel. Cumulative recoveries were low, with values between 50% and 60% on a sulphide basis, which corresponded to a 35–45% recovery on a total nickel basis. An analysis of the correlation between nickel,

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NICKEL AND COBALT ORES: FLOTATION - 911 Metallurgist

Developments in Flotation Flotation of Nickel Sul\de Minerals Collectorless Wotation It is known that chalcopyrite and pyrrhotite can be Soated without collectors at electrode potentials of #400 mV and #50 mV respectively, and pyrite does not Soat even at #700 mV. The underlying mechanism causing hy-drophobicity, although obscure, is attributed to sur-

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Differential flotation of chalcopyrite, pentlandite and ...

01/10/1996  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. The mechanism responsible for the observed selectivity

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Principles and practice of sulphide mineral flotation ...

This paper presents both the fundamentals of sulphide mineral flotation and the practical aspects of sulphide ore flotation. The fundamental aspects of the flotation of sulphide minerals both in the absence and presence of thiol collectors are discussed in relation to their crystal structure, surface chemistry and electrochemical characteristics. Since the electrochemistry of the sulphide mineral/aqueous solution

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CHAPTER 7 FLOTATION OF SULPHIDE MINERALS

Flotation of Chalcocite (Cu 2 S) Chalcocite (Cu 2 S) and chalcopyrite (CuFeS 2) are the two most commonly floated copper sulphide minerals. Bornite (Cu 5 FeS 4) and covellite (CuS) and energite (Cu 3 AsS 4) are normally present in lesser quantities. The complete flotation of chalcocite is achieved between ph = 1 to ph = 10 with ethyl xanthate. The resulting hydrophobic species is CuX.

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v115n8a4 Effects on entrainment of serpentines by ...

This is the case for the copper and nickel sulphides from the Yunnan Mine, China. Previous batch flotation tests of this ore resulted in satisfactory recoveries of 86.92% Cu, 54.92% Ni, and 74.73% Pt+Pd, and concentrate grades of 4.02% Cu, 3.24% Ni, and 76.61 g/t Pt+Pd. However, the MgO content in these concentrates was more than 19%.

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The Effect of Oxidation on the Flotation Behaviour of ...

(pH: 9.5). The average composition of the flotation feed was 0.94 per cent Ni, 0.10 per cent Cu, 31.8 per cent S. Redox potential, dissolved oxygen, pH and temperature were measured in the stirred tank as well as in the four litre flotation cell. Slurry samples were periodically withdrawn from the head tank into the flotation cell and floated. For each test, the slurry was

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An Overview of Calcite Recovery by Flotation SpringerLink

23/09/2020  There are few studies on sulphide flotation by primary di-amines in literature; Kydros et al. (1993) showed that pyrite can be floated with cetyltrimethylammonium bromide (CTMAB) resulting in maximum recoveries at pH 3–4 and decreasing recoveries with increasing pH although floating at pH 12.

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(PDF) The flotation of gersdorffite in sulphide nickel ...

The flotation of gersdorffite in sulphide nickel systems--A single mineral study. Ewen Silvester. Related Papers. Handbook of Flotation Reagents Chemistry, Theory and Practice: Flotation of Sulfide Ores. By Serkan Gökçen. Mining Chemicals HANDBOOK Revised Edition. By Clauss Timmermann. Effect of diethylenetriamine on xanthane interaction with Pb-contaminated pyrite . By James Finch ...

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Potential Use of Oxygen Depleted Air In Nickel Sulphide ...

flotation gas to decelerate the sulphides oxidation and therefore diminish the colloidal hydroxide slimes presence. The flotation residence time can be dramatically shortened in both cases. Further tests are recommended. ii Acknowledgements I would like to thank all my supervisors: Bertil Pålsson, Alexandra Lundmark, and Cecilia Lund for sharing their wide knowledge and keeping me on the ...

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Transport of metals and sulphur in magmas by flotation of ...

23/02/2015  The implications extend to the transport and deposition of Ni-, Cu- and Pt-rich sulphides in magmatic ore deposits, where it is clearly not safe to assume that sulphide melt will always tend to ...

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The role of carboxy methyl cellulose in the flotation of a ...

01/03/1992  Fine sulphide flotation in saline water Figure 13 shows that in a 10 % saline solution fine nickel sulphide flotation is promoted, whereas flotation with 1 g/t CMC does not result in upgrading, the nickel sulphides reporting to the concentrate by entrainment only. The low flotation recovery of particles in the size range 5-10 microns has been attributed by many researchers to the low ...

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Mineralogical Prediction of Flotation Performance for a ...

It has been shown that base metal sulphides have an effect on the mineral surface hydrophobicity through the formation of ... Ni, C. Kinetics of flotation. Order of process, rate constant distribution and ultimate recovery. Physicochem. Probl. Miner. Process. 2017, 53, 342–365. [Google Scholar] Garcia-Zungina, H. The efficiency obtained by flotation is an exponential function of time. Bol ...

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Nickel isotopes link Siberian Traps aerosol particles to ...

01/04/2021  However, Ni scavenged by magmatic sulphides could have been transferred to magmatic gases, and flotation of Ni-rich sulphide droplets to the surface by gas bubbles may have produced voluminous Ni ...

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v115n8a4 Effects on entrainment of serpentines by ...

copper-nickel sulphides during flotation by M. Tang*, S. Wen*, and X. Tong* Synopsis Slime coating is one of the most common ways for serpentines to contaminate metallic mineral concentrates during traditional flotation of coarse sulphide particles. This could pose quite a complicated and challenging problem in the case of some types of low-grade and finely disseminated Cu-Ni ores bearing high ...

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A New Process for Cobalt Nickel Separation - Teck

A New Process for Co-Ni Separation – ALTA 2010 1 A New Process for Cobalt – Nickel Separation By D.L. Jones 1, T.M. McCoy , K.E. Mayhew1, C.Y. Cheng 2, K.R. Barnard , W. Zhang2 Presented by David Jones [email protected] ALTA 2010 Perth, WA, Australia May 25, 2010 1 CESL Limited, Richmond, BC, Canada 2Parker Centre/CSIRO Minerals Down Under, Perth, Australia . A New

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Copper activation option for a pentlandite–pyrrhotite ...

30/05/2016  Differential flotation for these sulphides has been demonstrated where the natural floatability of chalcopyrite was enhanced ... Bradshaw DJ (2008) Evaluation of pyrrhotite from selected Ni and PGE ore deposits and the influence of its mineralogy on flotation performance. In: 9th international congress for applied mineralogy, Brisbane, AusIMM, pp 401–409 . 15. Trahar WJ, Dunkin HH (1954)

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Nickel processing - Extraction and refining Britannica

Nickel processing - Nickel processing - Extraction and refining: The extraction of nickel from ore follows much the same route as copper, and indeed, in a number of cases, similar processes and equipment are used. The major differences in equipment are the use of higher-temperature refractories and the increased cooling required to accommodate the higher operating temperatures in nickel ...

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Potential Use of Oxygen Depleted Air In Nickel Sulphide ...

flotation gas to decelerate the sulphides oxidation and therefore diminish the colloidal hydroxide slimes presence. The flotation residence time can be dramatically shortened in both cases. Further tests are recommended. ii Acknowledgements I would like to thank all my supervisors: Bertil Pålsson, Alexandra Lundmark, and Cecilia Lund for sharing their wide knowledge and keeping me on the ...

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Nickel isotopes link Siberian Traps aerosol particles to ...

01/04/2021  However, Ni scavenged by magmatic sulphides could have been transferred to magmatic gases, and flotation of Ni-rich sulphide droplets to the surface by gas bubbles may have produced voluminous Ni ...

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EXCELLENT METALLURGICAL TEST WORK RESULTS FOR MT

16.2% Ni from massive sulphides at 90.6% recovery with 6.26 g/t total PGEs ... Figure 2 – photos of flotation tests for massive sulphides: on left – copper flo tation; on right – nickel flotation. Advancing to a Mine – Stricklands Prospect . Metallurgical test work is also underway with XPS in Canada mineralisation from the shallow, highon the - grade Stricklands deposit. XPS has been ...

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Copper-Nickel ores

Separation of the bulk concentrate copper and nickel minerals is generally accomplished by flotation of the copper from pentlandite and nickel-bearing iron sulphides which report to the flotation tails. Pentlandite and iron sulphides are depressed by raising the pH up to 12 with lime and a small amount of sodium cyanide. Elevating the slurry temperature to 30-35 degrees C may improve the ...

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v115n8a4 Effects on entrainment of serpentines by ...

copper-nickel sulphides during flotation by M. Tang*, S. Wen*, and X. Tong* Synopsis Slime coating is one of the most common ways for serpentines to contaminate metallic mineral concentrates during traditional flotation of coarse sulphide particles. This could pose quite a complicated and challenging problem in the case of some types of low-grade and finely disseminated Cu-Ni ores bearing high ...

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Process Mineralogy of a Low Grade Cu-Ni-PGM Sulphide

SEM images show that the PGMs are mainly disseminated in sulphides, most occur as inclusions or semi-inclusions, and part are inlayed along the other minerals to form coarse compound grains. Due to the the complex mineral composition and texture, processing the Cu-Ni-PGM ores by traditional flotation may be difficult to get a good processing performance. Registration Log In Distribution ...

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Copper activation option for a pentlandite–pyrrhotite ...

30/05/2016  Differential flotation for these sulphides has been demonstrated where the natural floatability of chalcopyrite was enhanced ... Bradshaw DJ (2008) Evaluation of pyrrhotite from selected Ni and PGE ore deposits and the influence of its mineralogy on flotation performance. In: 9th international congress for applied mineralogy, Brisbane, AusIMM, pp 401–409 . 15. Trahar WJ, Dunkin HH (1954)

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Nickel Sulfide Versus Laterite : The Hard Sustainability ...

Global nickel (Ni) production has increased significantly, including near exponential growth since 1950, from some 10,000 tonnes Ni (t Ni) in 1900 to about 1.6 million tonnes (Mt Ni) in 2007, shown in Figure 1 (including consumption). Based on the present global mining boom led by Chinese demand (amongst other factors), it is most likely that the increasing trend for nickel production and ...

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A New Process for Cobalt Nickel Separation - Teck

A New Process for Co-Ni Separation – ALTA 2010 1 A New Process for Cobalt – Nickel Separation By D.L. Jones 1, T.M. McCoy , K.E. Mayhew1, C.Y. Cheng 2, K.R. Barnard , W. Zhang2 Presented by David Jones [email protected] ALTA 2010 Perth, WA, Australia May 25, 2010 1 CESL Limited, Richmond, BC, Canada 2Parker Centre/CSIRO Minerals Down Under, Perth, Australia . A New

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An Overview of Calcite Recovery by Flotation SpringerLink

23/09/2020  The flotation of sulphides and quartz from calcite is possible while using an amine collector at neutral or mildly alkaline pH values where the amines are present in mono and doubly charged ions. Optimum results were also observed above pH 10, where the neutral amine molecules are in colloidal precipitate form interacting with the sulphides (explained in the previous section).

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Optimisation of Reagent Addition during Flotation of a ...

Optimisation of Reagent Addition during Flotation of a Nickel Sulphide ore at the Nkomati Mine Concentrator Prepared by: Riyard Kahn (783709) Supervised by: Prof Vusumuzi Sibanda 28 January 2017 A dissertation submitted to the faculty of Engineering and the Built Environment, University of Witwatersrand in fulfilment of the requirements for the degree of Master of Science in Engineering .

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372 BENEFICIATION OF A BRAZILIAN NICKEL SULPHIDE ORE JOHN ...

Bulk flotation of all sulphides followed by partial roasting and matte smelting is the conventional route for pentlanditej pyrrhotite ores. This ensures maximum sulphur recovery to acid production and a final product which can be refined to recover PGM plus cobalt as well as nickel and copper. As an alternative, differential flotation usually at a soda-ash-controlled pH around 9 can give a ...

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Nickel isotopes link Siberian Traps aerosol particles to ...

01/04/2021  However, Ni scavenged by magmatic sulphides could have been transferred to magmatic gases, and flotation of Ni-rich sulphide droplets to the surface by gas bubbles may have produced voluminous Ni ...

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EXCELLENT METALLURGICAL TEST WORK RESULTS FOR MT

16.2% Ni from massive sulphides at 90.6% recovery with 6.26 g/t total PGEs ... Figure 2 – photos of flotation tests for massive sulphides: on left – copper flo tation; on right – nickel flotation. Advancing to a Mine – Stricklands Prospect . Metallurgical test work is also underway with XPS in Canada mineralisation from the shallow, highon the - grade Stricklands deposit. XPS has been ...

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Unlocking Disseminated Nickel Sulphides using the CESL ...

supply will remain heavily reliant on the processing of massive sulphides. Smelting and refining of massive sulphides begins with the flotation of ore, typically in the range of 0.2-2% nickel, to an acceptable concentrate grade of 10 to 20% nickel.[2,11] Concentrate smelting

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Copper-Nickel ores

Separation of the bulk concentrate copper and nickel minerals is generally accomplished by flotation of the copper from pentlandite and nickel-bearing iron sulphides which report to the flotation tails. Pentlandite and iron sulphides are depressed by raising the pH up to 12 with lime and a small amount of sodium cyanide. Elevating the slurry temperature to 30-35 degrees C may improve the ...

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Froth flotation - Wikipedia

Froth flotation is a process for selectively separating hydrophobic materials from hydrophilic. This is used in mineral processing, paper recycling and waste-water treatment industries. Historically this was first used in the mining industry, where it was one of the great enabling technologies of the 20th century. It has been described as "the single most important operation used for the ...

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Copper activation option for a pentlandite–pyrrhotite ...

30/05/2016  Differential flotation for these sulphides has been demonstrated where the natural floatability of chalcopyrite was enhanced ... Bradshaw DJ (2008) Evaluation of pyrrhotite from selected Ni and PGE ore deposits and the influence of its mineralogy on flotation performance. In: 9th international congress for applied mineralogy, Brisbane, AusIMM, pp 401–409 . 15. Trahar WJ, Dunkin HH (1954)

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A New Process for Cobalt Nickel Separation - Teck

A New Process for Co-Ni Separation – ALTA 2010 1 A New Process for Cobalt – Nickel Separation By D.L. Jones 1, T.M. McCoy , K.E. Mayhew1, C.Y. Cheng 2, K.R. Barnard , W. Zhang2 Presented by David Jones [email protected] ALTA 2010 Perth, WA, Australia May 25, 2010 1 CESL Limited, Richmond, BC, Canada 2Parker Centre/CSIRO Minerals Down Under, Perth, Australia . A New

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An Overview of Calcite Recovery by Flotation SpringerLink

23/09/2020  The flotation of sulphides and quartz from calcite is possible while using an amine collector at neutral or mildly alkaline pH values where the amines are present in mono and doubly charged ions. Optimum results were also observed above pH 10, where the neutral amine molecules are in colloidal precipitate form interacting with the sulphides (explained in the previous section).

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