pyrrhotite processing

Nickeliferous pyrrhotite – "Waste or resource ...

 · Processing of "clean" pyrrhotite is considered a pre-requisite in both current and historical flow sheet design, if a saleable iron product is the intended focus. If this business goal is abandoned, copper and gangue rejection become a lower priority, since non-ferrous smelters can effectively manage these in intermediates, when present in ...


(PDF) A comparison of pyrrhotite rejection and passivation ...

pyrrhotite particles during flotation; thus resulting in pyrrhotite In many nickel processing operations, pyrrhotite is rejected to rejection (Kelebek, 1993). Studies by Kelebek (1993) have indi- the tailings stream by flotation. This is due to the fact that in most cated that the depression of pyrrhotite increases as the oxidation magmatic ...


A REVIEW ON PROCESS-RELATED CHARACTERISTICS OF …

 · Other pyrrhotite processing techniques, including oxidation and flotation, are also included in this article. Keywords: flotation leaching mineral processing monosulfide solid solution pyrrhotite. More Share Options . Related research . People also read lists articles that other readers of this article have read.


A review on pyrrhotite oxidation - ScienceDirect

 · 1.. IntroductionAfter pyrite, pyrrhotite is the most common iron sulphide in nature. A better understanding of the reactivity and oxidation of pyrrhotite is needed for improved mineral processing and recovery and to prevent the production of acid mine drainage (AMD) from iron sulphides in mine waste.


Canadian pyrrhotite treatment: the history, inventory and ...

Canadian pyrrhotite treatment: the history, inventory and potential for tailings processing S. Rezaeia, F. Liu a, S. Marcusonb, M. Muinonen c, V. L. Lakshmanand, R ...


Pyrrhotite - An Important Gangue and a Source for ...

Pyrrhotite crystallises as either a hexagonal or monoclinic structure, both of which can occur in ore deposits. In general, pyrrhotite is not considered as a valuable mineral unless it contains considerable amounts of other metals like nickel or copper. In fact it causes numerous problems in flotation including intensive oxygen consumption, which results in poor selectivity among …


Pyrrhotite: The mineral pyrrhotite information and pictures

Pyrrhotite is commonly pseudomorphed by Pyrite, with complete replacement of the Pyrhottite by sparkling Pyrite crystals. Pyrrhotite is named from the Greek word pyrrhos, which means "color of fire".This is despite the fact that the usual color of Pyrrhotite is a bronze color rather than red; however its tarnish may have hints of sparkling red.


-A New ...

 · SUN Mingjun,LIU Zhiguo,YU Chuanbing,DENG Chaoan,GUO Suhong.A New Technology for Exploitation and Utilization of Nickel Sulfide Ore Containing Pyrrhotite[J].Nonferrous Metals(Mineral Processing Section),2022(1):103-108.


Gold Pyrite, Pyrrhotite and Arsenopyrite Recovery

 · Gold Pyrite, Pyrrhotite and Arsenopyrite Recovery. One of the more common classes of ores containing gold is when gold is associated with pyrite, pyrrhotite, and arsenopyrite. This is the area of gold recovery that has …


Pyrrhotite - Scientific.Net

The pyrrhotite leaching behavior using S. thermosulfidooxidans grown on ferrous ion in a long term was similar to that in the sterile acidic system, ... However, a large number of jarosite was generated owing to the accumulation of ferric ions with the bioleaching processing, and the formed wrapping layer by jarosite and minor sulfur on mineral ...


A review of pyrrhotite flotation chemistry in the ...

 · Abstract. 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 University of Utah are presented. In some cases a low flotation recovery of PGM may be due to the surface state of pyrrhotite particles ...


SPACE PLASMA ION PROCESSING OF IDP SULFIDES: A …

 · diation processing model for GEMS formation sub-sumes much higher ion energies (e.g., GeV ions in the interstellar medium [1]), then an extrapolation of our present data to this scenario should not be made. Given pyrrhotite's resistance to radiation processing effects, it is puzzling that astronomical observations show that


The Composition and Crystal Structures of Pyrrhotite: A ...

 · Pyrrhotite Characterization • Pyrrhotite (Fe1-xS) is a common sulfide mineral in nickel and platinum group metal (PGM) deposits • It is an unwanted phase in nickel processing because it dilutes the nickel concentrate and is expensive to remove • It is recovered in PGM processing because many platinum group minerals are associated with it.


Pyrrhotite Fe1−xS microcubes as a new anode material in ...

 · Pyrrhotite, Fe 1−x S (0 < x < 0.2), is one of the most important types of metal sulfides. This metal sulfide crystallizes in a distorted NiAs lattice with a superstructure of ordered iron ...


Cyanidation of a pyrrhotite-bearing gold ore

 · The European Journal of Mineral Processing and Environmental Protection Vol.3, No.3, 1303-0868, 2003, pp. 353-361 Cyanidation of a pyrrhotite-bearing gold ore G. Deschênes1*, D. Hall2 and M. Fulton1 1 Mining and Mineral Sciences Laboratories, CANMET, Natural Resources Canada,


Integrated environmental management of pyrrhotite …

 · Due to their pyrrhotite content, Raglan Mine tailings underwent a desulfurization process in order to reduce their sulfur content and, consequently, their acid generation potential. All slurries were diluted using processing water in order to conserve the initial characteristics of the pulp (e.g., pH, Eh, residual reagents).


Pyrrhotite and Crumbling Concrete - Connecticut

 · Pyrrhotite in concrete is a geohazard that has caused a societal crisis in Connecticut, impacting as many as 35,000 homes, condominiums, and municipal buildings. Homes are going into foreclosure and people are losing their life savings, as the costs to replace entire foundations can be greater than $200,000.


(PDF) A Review on Pyrrhotite Oxidation - …

The factors affecting pyrite and pyrrhotite oxidation are similar but the latter has received much less attention. ... Electrochemistry in Mineral and Metal …


Flotation of chalcopyrite, pentlandite, pyrrhotite ores ...

 · Processing requirements for copper-nickel ores have changed as the need to limit the emission of sulfur dioxide from smelters has gained in importance. Pyrrhotite was once recovered because of its nickel content but now is rejected wherever possible because of the relatively large amount of sulfur that it contributes to the flotation concentrate.


(PDF) FLOTATION OF PYRRHOTITE FROM …

 · pyrrhotite removal, a processing flows heet was developed and validated at pilot . scale. 2 EXPERIMENTAL . 2.1 Materials . For the purpose of laboratory testing, 500 kg of secondary-crushed ...


Insight into the degradation of ammonium dibutyl ...

 · Ammonium dibutyl dithiophosphate (ADD) is one of the most important flotation reagents in sulfide mineral processing, causing severe environmental pollution. In this study, natural pyrrhotite (NP)-activated peroxydisulfate (PDS) was applied to treat ...


(PDF) Electrochemical properties of pyrite, pyrrhotite ...

PENG, Y., GRANO, S., FORNASIERO, D., and RALSTON, J. Control of grinding Based on the results of our experimental work, it was conditions in the flotation of galena and its separation from pyrite. determined that among pyrite, pyrrhotite, and steel, pyrite International Journal of Mineral Processing, vol. 70, 2003b. pp. 67–82. has the highest ...


A review on process-related characteristics of pyrrhotite

In this review, the physical and chemical properties of the pyrrhotite group minerals are discussed, particularly their mineralogical behavior during mineral processing and phase transitions. Pyrrhotites are often associated with nickel ores and gold deposits.


(PDF) Canadian pyrrhotite treatment: the history ...

 · Erin R. Bobicki. Diethylenetriamine (DETA) is an effective mineral processing reagent for the depression of pyrrhotite in the flotation of Cu …


The Effect of Conditioning on the Flotation of …

 · The influence of conditioning on the flotation of pyrrhotite in the presence of chlorite was investigated through flotation tests, sedimentation tests, and X-ray photoelectron spectroscopy (XPS) analysis. The flotation results …


(PDF) 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 University of Utah are presented. In some cases a low


Pyrrhotite flotation and its selectivity against ...

 · 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.


Pyrrhotite - an overview | ScienceDirect Topics

Pyrrhotite (Fig. 1.11) is an unusual iron sulfide with variable iron content [Fe (1−x) S (x=0–0.2)].The color ranges between bronze yellow and copper-red with black streak and metallic luster. The hardness varies between 3.5 and 4.5 on the Mohs scale and an …


Pyrrhotite: Physical properties, uses, composition

Magnetic Properties of Pyrrhotite. Pyrrhotite is similar to another iron sulfide mineral named troilite. Troilite has a chemical composition of FeS, while pyrrhotite's chemical composition is Fe (1-x) S. Pyrrhotite is deficient in iron because some of the iron sites in its crystal lattice are vacant (empty). That is why the iron in the formula has a subscript of 1-x.


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 …