• Flotation of chalcopyrite, pentlandite, pyrrhotite ores

    One rejects primarily monoclinic pyrrhotite that is magnetic. After a secondary FLOTATION OF CHALCOPYRITE, PENTLANDITE, PYRRHOTITE ORES 1 1 magnetic separation and regrinding to liberate most of the chalcopyrite and pentlandite, a two stage flotation separation is done to produce a "copper- nickel concentrate" before the pyrrhotite is rejected

    Flotation of chalcopyrite, pentlandite, pyrrhotite ores

    A review is given of the processing of copper-nickel ores with particular emphasis placed on the rejection of the mineral pyrrhotite which is the principal source of sulfur in concentrates that are smelted. Methods of treatment that have evolved for processing ores from

    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.

    NICKEL AND COBALT ORES: FLOTATION

    Soat pentlandite from pyrrhotite, by maintaining a highly alkaline pH with cyanide as depressant and using thiols like xanthates or dithiophosphates as collectors. Although it is possible to reject signiRcant III/NICKEL AND COBALT ORES: FLOTATION 3491

    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.

    Differential Flotation of Chalcopyrite, Pentlandite and

    18/07/2013· 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 frother.

    Sensitivity of pentlandite flotation in complex sulfide

    10/03/2014· Pentlandite and chalcopyrite recoveries obtained from this ore at pH 10 are shown as a function of time in Fig. 7, Fig. 8, respectively. In sharp contrast to the case with the Sudbury ore, the pentlandite in this complex sulfide ore is completely depressed in the presence of lime while it reaches high levels of recovery in the soda ash system.

    The Effect of Oxidation on the Flotation Behaviour of

    promotes the flotability of all principal sulphides in the ore leading to a bulk flotation concentrate. The ease of individual mineral flotability under normal aeration conditions, which is chalcopyrite > pentlandite > pyrrotite, changes to pentlandite > chalcopyrite > pyrrhotite under oxygen-deficient conditions. This behaviour is correlated

    Copper activation option for a pentlandite–pyrrhotite

    30/05/2016· Introduction. Different sulphide ores respond differently in the prospect of copper activation to thiols for froth flotation. With the BCL Selebi-Phikwe ore body, pentlandite–pyrrhotite–chalcopyrite co-occur and there is the constraint of fine pentlandite dissemination in the pyrrhotite

    The separation of pentlandite from chalcopyrite

    The separation of pentlandite from chalcopyrite, pyrrhotite and gangue in nickel projects throughout the world V. Lawson, G. Hill, L. Kormos, G. Marrs AusIMM Mill

    Copper activation option for a pentlandite–pyrrhotite

    With the BCL Selebi-Phikwe ore body, pentlandite– pyrrhotite–chalcopyrite co-occur and there is the constraint of fine pentlandite dissemination in the pyrrhotite, so that liberation is limited. In the presence of pentlandite, pyr-rhotite can even be galvanically depressed. In this scenario, response of the ore to copper activation may not

    Pyrrhotite flotation and its selectivity against

    Abstract. Pyrrhotite (Po) is one of the most abundant sulfide minerals in processing industry and must be rejected in most cases. Particularly, Po rejection and its selectivity against pentlandite (Pn) have long been a challenge due to similarities in the mineral composition of the two minerals and the collectorless flotation characteristics of Po.

    Copper activation option for a pentlandite–pyrrhotite

    Introduction Different sulphide ores respond differently in the prospect of copper activation to thiols for froth flotation. With the BCL Selebi-Phikwe ore body, pentlandite–pyrrhotite–chalcopyrite co-occur and there is the constraint of fine pentlandite dissemination in the pyrrhotite, so that liberation is limited.

    Electrochemistry Flotation Pentlandite & Pyrrhotite

    Grinding the ore to the finer size (30 min. grind) significantly increased the flotation response, the chalcopyrite, pentlandite and pyrrhotite recoveries increasing from 27.3-87.9, 13.4-69.3, 4.8-17.2% respectively, using DOW 1263 as a frother. The majority of the flotation tests were subsequently performed using the 30 min. grind.

    Copper activation option for a pentlandite–pyrrhotite

    IntroductionDifferent sulphide ores respond differently in the prospect of copper activation to thiols for froth flotation. With the BCL Selebi-Phikwe ore body, pentlandite–pyrrhotite

    Pentlandite Wikipedia

    The pentlandite-chalcopyrite-pyrrhotite ore around the Sudbury Structure formed from sulfide melts that segregated from the melt sheet produced by the impact. Hydrogen catalysis. Pentlandite is a catalyst for production of hydrogen and oxygen from water using electricity.

    Separation of Chalcopyrite from Pentlandite by Flotation

    This chapter discusses separation of chalcopyrite from pentlandite by the process of floatation. Nickel sulfide contains both and chalcopyrite. The principles of floating chalcopyrite from mixed

    Sensitivity of pentlandite flotation in complex sulfide

    An extreme sensitivity of pentlandite flotation towards pH regulator at pH 10 has been documented using two types of complex nickel-copper sulphide ores in Northern Ontario, Canada.

    Millerite (NiS) Serapation from Pentlandite and Chalcopyrite

    Pentlandite is recovered primarily by froth flotation and the flotation behaviour of pentlandite is well known and defined. In the literature, however, there is very little data on the flotation behaviour of millerite. Millerite is a relatively rare sulphide mineral and is mostly found in hydrothermal deposits as a replacement for pentlandite

    Copper-Nickel ores Danafloat

    Copper-Nickel ores. Pentlandite ((Ni,Fe)S) is the most important nickel sulphide mineral and is often associated with nickel-containing pyrrhotite and chalcopyrite. Gangue minerals can include talc and other troublesome silicates which must be dispersed and/or depressed. Recovery and separation entails floating all three sulphide minerals into a bulk flotation concentrate at natural pH or at

    FLOTATION OF PLATINUM GROUP METAL (PGM) ORES

    Chalcopyrite and pentlandite float well using a xanthate collector and in certain operations,the recovery can reach greater than 90%. Violarite is the least floatable mineral of all the sulphides and represents a major loss ofPGM in the flotation tailing from a number of operations.

    The selective flotation of pentlandite from a nickel ore

    The selective flotation of pentlandite from a nickel ore The selective flotation of pentlandite from a nickel ore Senior, G.D.; Trahar, W.J.; Guy, P.J. 1995-06-01 00:00:00 Nickel sulphide ores containing pentlandite, pyrrhotite and talc have traditionally been treated by bulk sulphide flotation, an approach which seeks to maximise nickel recovery and talc rejection but which does not reject

    Interpreting the role of reagents in the flotation of

    made up of approximately 45–55% pyrrhotite, 30–35% pentlandite and 15–20% chalcopyrite, and with minor pyrite. The nature of the mineralization of these ores is such that the natural pH of the ore slurries is always alkaline, at a pH of around 9. The PGEs are recovered by flotation and the flotation of the BMS is treated as a bulk

    The role of nitrogen on the flotation performance of a

    (1976). Flotation chemistry of the INCO matte seperation process. In: Flotation, (1996). Flotation of a complex sulphide ore I. Cu/Zn selectivity control by adjusting pulp potential with different gases. Flotation of chalcopyrite, pentlandite, pyrrhotite ores. (1988). Galvanic interaction studies on sulphide minerals. Canadian Metallurgical

    A review of pyrrhotite flotation chemistry in the

    The chemistry of pyrrhotite flotation using xanthate collectors is reviewed with respect to the processing of PGM ores and the recent results from captive bubble contact angle measurements at the

    Chalcopyrite flotation chalcopyrite

    One rejects primarily monoclinic pyrrhotite that is magnetic. After a secondary FLOTATION OF CHALCOPYRITE, PENTLANDITE, PYRRHOTITE ORES 1 1 magnetic separation and regrinding to liberate most of the chalcopyrite and pentlandite, a two stage flotation separation is done to produce a "copper- nickel concentrate" before the pyrrhotite is rejected.

    CHAPTER 3 COMPARISON OF DIFFERENT PYRRHOTITE

    COMPARISON OF DIFFERENT PYRRHOTITE DEPRESSANTS IN PENTLANDITE FLOTATION 3.1 INTRODUCTION Due to the similarities in mineralogy and chemical composition, and as well as the pyrrhotite collectorless flotation, it is difficult to achieve a clean separation between pentlandite and pyrrhotite. Pyrrhotite rejections has been a long-standing problem

    Copper Nickel Flotation

    Cyclic Copper Nickel Flotation Tests. To further clarify the flotation response of the shaft sample, several cyclic tests were carried out. A 6-min grind in the laboratory ball mill was selected for these tests, and the result was a 40-pct minus 325-mesh grind. The flotation procedure used was to condition 600 grams of ground ore pulp for 3 min

    flotation of ni sulphides rijlesgroningen.nl

    Jan 01, 2014· This paper discusses two mineralogy characteristics that may affect the flotation of sulfide ore The first one, process mineralogy study on a Cu-Ni sulfide ore shows that valleriite and tochilinite are incline to form on chalcopyrite, pyrrhotite and serpentine surface, and the further guess is that the formation of valleriite and

    X-ray diffraction study of chalcopyrite,2 5 8

    Figure 2. The XRD pattern of sample 2 of the Cu–Ni ore body, showing peaks for pyrrhotite (P), pentlandite (N), chalcopyrite (C), bunsenite (B) and chalcocite (Cc). 3.1. Chalcopyrite CuFeS2 Chalcopyrite peaks are present in all of the diffractograms in figures 1 to 5. The highest diffracted intensity is from the (112) plane. In order to

    CHAPTER 3 COMPARISON OF DIFFERENT PYRRHOTITE

    COMPARISON OF DIFFERENT PYRRHOTITE DEPRESSANTS IN PENTLANDITE FLOTATION 3.1 INTRODUCTION Due to the similarities in mineralogy and chemical composition, and as well as the pyrrhotite collectorless flotation, it is difficult to achieve a clean separation between pentlandite and pyrrhotite. Pyrrhotite rejections has been a long-standing problem

    The role of complexing agents in the flotation of CORE

    (1996). Differential flotation of chalcopyrite, pentlandite and pyrrhotite in Ni-Cu sulphide ores. (1994). Distribution of surface metal ions among the products of chalcopyrite flotation. (1990). EDTA-induced flotation of sulphide minerals. (2002). Effect of calcium and thiosulfate ions on flotation selectivity of nickel-copper ores. (1999

    Pyrrhotite Wikipedia

    The saturation magnetization of pyrrhotite is 0.12 tesla. Occurrence. Pyrrhotite is a rather common trace constituent of mafic igneous rocks especially norites. It occurs as segregation deposits in layered intrusions associated with pentlandite, chalcopyrite and other sulfides.

    Flotation of Nickel and Nickel–Copper Ores PDF Free

    Else_HFRC-Bulatovic_Ch016.qxd 12/4/2006 7:52 PM Page 401 16 Flotation of Nickel and Nickel–Copper Ores 16.1 ORE TYPES AND MINERALOGY There Download PDF . 741KB Sizes 2 Downloads 307 Views. Report. Recommend Documents. Upgrading nickel in laterite ores by flotation Flotation of Copper Sulfide Ores Flotation of gold and gold-bearing ores Reagents in iron ores flotation Flotation

    (PDF) Evaluation of pyrrhotite from selected Ni and

    Evaluation of pyrrhotite from selected Ni and platinum group element (PGE) ore deposits and the influence of its mineralogy on flotation performance

    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. The method exploits the ease of chalcopyr. Read more

    flotation of ni-sulphides greenrevolution.org.in

    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. The method exploits the ease of chalcopyr. Read more

    Eh-pH Stability Diagrams for Analysis of Polyamine

    Recent bench scale testing on some of these complex ores indicated that chalcopyrite flotation can also be adversely affected under certain conditions involving polyamines. This observation is consistent with specific affinity of these reagents towards copper ions. In general, DETA shows no significant depressant action on chalcopyrite while TETA's promotion of hydrophilicity for this mineral

    AN ASSESSMENT OF PENTLANDITE OCCURRENCE IN THE RUN

    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.

    PROCESS DEVELOPMENT OF THE NKOMATI PCMZ BASE METALS

    nickel ore was identified to have the capability of producing a high grade nickel concentrate. In addition to the nickel, copper, cobalt and PGM products, this ore also contains a significant amount of chromite which adds substantial value to the project. Pyrrhotite, pentlandite, chalcopyrite and chromite are the dominant minerals within the ore,

 

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