pyrrhotite processing

  • Home
  • >
  • pyrrhotite processing

A review of pyrrhotite flotation chemistry in the ...

Jul 01, 2005  The pyrrhotite sample was from North Bend, Washington and was analyzed by XRD to be only one phase β-Fe 1−x S (Fe 47.0% and S 32.6%) having hexagonal crystal structure with some impurities (C 1.45% and Zn 4.64%). The zeta potential of this pyrrhotite sample was measured under selected conditions and the results are presented in Fig. 2.

More

A REVIEW ON PROCESS-RELATED CHARACTERISTICS OF

Nov 14, 2007  Consideration of the leaching processes of pyrrhotites focuses on the recovery of Ni and Au. The mechanisms of acid leaching are presented from physical, chemical, electrochemical, and crystallographic viewpoints. Other pyrrhotite processing techniques, including oxidation and flotation, are also included in this article.

More

The problem with pyrrhotite - International Mining

Sep 04, 2017  “Historically, pyrrhotite rejection has been successful by using appropriate reagents, pulp density, Eh control all play a role in improving selectivity of the economic mineral versus pyrrhotite. However, the factors listed above tend to be successful on the monoclinic variety and have less of an impact on the hexagonal polytype.

More

Cyanide Leaching and Decomposition of Pyrrhotite

Oct 14, 2015  Pyrrhotite, if kept dry, is stable but in the presence of water and air, it breaks down rapidly forming such compounds as sulphuric acid, ferrous sulphate,

More

Gold Pyrite, Pyrrhotite and Arsenopyrite Recovery

Apr 15, 2018  Pyrite as it occurs in sulfide mineral systems requires a collector to float. There is a great deal of fundamental research currently going on in the flotation of pyrite with various chemical structures. Experience has shown that in the acid pH range of 4 to 5, almost all standard thio collectors are effective as pyrite collectors.

More

(PDF) Cyanidation of a pyrrhotite-bearing gold ore

The Musselwhite Mine in Canada processes a free milling gold ore at 5.5-5.8g/t Au and 4.2% pyrrhotite. A laboratory investigation was conducted to improve cyanidation. The pyrrhotite was determined...

More

(PDF) FLOTATION OF PYRRHOTITE FROM MAGNETITE

Oct 14, 2012  conditions for pyrrhotite removal, a processing flowsheet was developed and validated by pilot scale testing. The resu lts obtained in the latter surpassed the values achieved at the laborat ory...

More

Pyrrhotite - Wikipedia

Pyrrhotite is an iron sulfide mineral with the formula Fe (1-x) S (x = 0 to 0.2). It is a nonstoichiometric variant of FeS, the mineral known as troilite.Pyrrhotite is also called magnetic pyrite, because the color is similar to pyrite and it is weakly magnetic.The magnetism decreases as the iron content increases, and troilite is non-magnetic. [page needed]

More

pyrrhotite processing

pyrrhotite processing ilgiardinosullago it. ore processing magnetic pyrrhotite tails for sale PyrrhotitePyrrhotite processing plant manufacturer Pyrrhotite pyrrhotite family of an iron sulfide minerals its composition contains sulfur up to 40 it can be used to make sulfuric ac copper ore processing equipment pyrite ore price .

More

A review on process-related characteristics of pyrrhotite

Other pyrrhotite processing techniques, including oxidation and flotation, are also included in this article. Related items. Showing items related by title, author, creator and subject. Relationship between microstructures and grain-scale trace element distribution in komatiite-hosted magmatic sulphide ores ...

More

A REVIEW ON PROCESS-RELATED CHARACTERISTICS OF PYRRHOTITE ...

Nov 14, 2007  Consideration of the leaching processes of pyrrhotites focuses on the recovery of Ni and Au. The mechanisms of acid leaching are presented from physical, chemical, electrochemical, and crystallographic viewpoints. Other pyrrhotite processing techniques, including oxidation and flotation, are also included in this article.

More

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.

More

A review of pyrrhotite flotation chemistry in the ...

Jul 01, 2005  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 ...

More

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 sulphide ...

More

Space radiation processing of sulfides and silicates in ...

Jun 24, 2011  Although pyrrhotite (Fe 1−x S) is very likely a component of dust grains subject to processing from energetic ions in interstellar and other space radiation environments, the results of the current study suggest this mineral is two orders of magnitude, or more, less subject to ion-induced amorphization than Mg-rich olivine and enstatite, its ...

More

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.

More

The Separation of Pentlandite from Chalcopyrite ...

performance can be made by adjusting plant physical processing conditions or process chemistry to compensate for measurable ore properties and characteristics.CITATION:Lawson, V, Hill, G, Kormos, L and Marrs, G, 2014. The separation of pentlandite from chalcopyrite, pyrrhotite and

More

Introduction to Mineral Processing or Beneficiation

Jan 12, 2018  Mineral Processing Introduction. Mineral processing is a major division in the science of Extractive Metallurgy. Extractive metallurgy has been defined as the science and art of extracting metals from their ores, refining them and preparing them for use. Within extractive metallurgy, the major divisions in the order they may most commonly occur ...

More

A review of the physicochemical properties and flotation ...

Dec 05, 2017  Pyrrhotite is one of the most abundant sulphide gangue minerals in base metal mining operations. It has little economic value and is a significant contributor of SO2 emissions at

More

Pyrrhotite - Wikipedia

Pyrrhotite is an iron sulfide mineral with the formula Fe (1-x) S (x = 0 to 0.2). It is a nonstoichiometric variant of FeS, the mineral known as troilite.Pyrrhotite is also called magnetic pyrite, because the color is similar to pyrite and it is weakly magnetic.The magnetism decreases as the iron content increases, and troilite is non-magnetic. [page needed]

More

Minerals Free Full-Text The Desulfurization of ...

The contamination of sulfur emanating from pyrrhotite in magnetite concentrates has been a problem in iron ore processing. This study utilized froth flotation to float pyrrhotite away from magnetite using collectors of xanthate and dixanthogen. It was found that xanthate or dixanthogen alone could not achieve selective separation between pyrrhotite and magnetite in flotation.

More

GEOPHYSICAL METHODS IN EXPLORATION AND MINERAL ...

including pyrrhotite and greigite) among rocks. Measurements are made using fluxgate, proton-precession, 20 Table 1. Summary of geophysical methods and their characteristics applicable to exploration and geoenvironmental studies. [In method column: A, airborne surveys; B, borehole surveys; and G, ground surveys]

More

A review on process-related characteristics of pyrrhotite

Other pyrrhotite processing techniques, including oxidation and flotation, are also included in this article. Related items. Showing items related by title, author, creator and subject. Relationship between microstructures and grain-scale trace element distribution in komatiite-hosted magmatic sulphide ores ...

More

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.

More

Minerals Metallurgical Processing

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.

More

AN ACT CONCERNING CRUMBLING CONCRETE

processing, storage, and quality control methods; 2. a description of the products the quarry will produce; 3. a description of the characteristics of the aggregate to be ... pyrrhotite in the sample, the aggregate must be approved for use for one year and the test

More

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.

More

Frequently Asked Questions - Trinity Concrete Analysis

What is pyrrhotite? Pyrrhotite (PEER-o-tight) is a naturally occurring iron sulfide mineral that is often found in marine sedimentary rocks. It can also can be found in some igneous rocks and some metamorphic rocks that are of a marine origin. It is a highly reactive mineral and breaks down in the presence of water and air.

More

Pyrrotite - Attack A Crack™ helps Home Owners with ...

Pyrrhotite WARNING in CT. The Connecticut Department of Housing recently posted a bulletin, stating there are upwards of 35,000 Homes and Businesses in the North, East, and Central parts of Connecticut that are facing a potentially devastating issue due to the presence of a naturally occurring Iron Sulfide(Pyrrhotite) originating from a quarry in Willington.

More

Pyrrhotite in concrete causes crumbling foundations in MA ...

Aug 31, 2021  REGION — Homeowners should perhaps fear one word even more than termites or mold: Pyrrhotite. Hidden within the concrete of house foundations, pyrrhotite can, over time, turn the rock-solid base of a home into a crumble of material that turns to rubble in the hand.. The presence of pyrrhotite has become an issue for thousands of homeowners, first in Connecticut and now in other

More

GEOPHYSICAL METHODS IN EXPLORATION AND MINERAL ...

including pyrrhotite and greigite) among rocks. Measurements are made using fluxgate, proton-precession, 20 Table 1. Summary of geophysical methods and their characteristics applicable to exploration and geoenvironmental studies. [In method column: A, airborne surveys; B, borehole surveys; and G, ground surveys]

More

A review of the physicochemical properties and flotation ...

Dec 05, 2017  Pyrrhotite is one of the most abundant sulphide gangue minerals in base metal mining operations. It has little economic value and is a significant contributor of SO2 emissions at

More

US801879A - Method of separating pyrrhotite from ...

US801879A US27086405A US1905270864A US801879A US 801879 A US801879 A US 801879A US 27086405 A US27086405 A US 27086405A US 1905270864 A US1905270864 A US 1905270864A US 801879 A US801879 A US 801879A Authority US United States Prior art keywords pyrrhotite magnetic chalcopyrite ore gangue Prior art date 1905-07-22 Legal status (The legal status is an assumption and

More

Electronic structure and flotation behavior of monoclinic ...

Feb 18, 2015  高达12%返现  Electronic structures of monoclinic and hexagonal pyrrhotite were studied using density functional theory method, together with their flotation behavior. The main contribution of monoclinic pyrrhotite is mainly from Fe 3d, while that of hexagonal pyrrhotite is from Fe 3d, Fe 3p and S 3s. The hexagonal pyrrhotite is more reactive than monoclinic pyrrhotite because

More

Alternative methods of Norilsk' pyrrhotite concentrates ...

Nickel concentration in pyrrhotite concent rates of the Norilsk group of deposits reaches 2–3 % (mass.); due to this the concentrates are separated and processed as an independent type of feed material. The review of available methods of processing is presented, there is demonstrated that none of them is free from disadvantages.

More

Pyrrhotite - Wikipedia

Pyrrhotite is an iron sulfide mineral with the formula Fe (1-x) S (x = 0 to 0.2). It is a nonstoichiometric variant of FeS, the mineral known as troilite.Pyrrhotite is also called magnetic pyrite, because the color is similar to pyrite and it is weakly magnetic.The magnetism decreases as the iron content increases, and troilite is non-magnetic. [page needed]

More