magnetic separation pyrrhotite
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magnetic separation pyrrhotite

magnetic separation pyrrhotite

Physical Separation of Thermally Upgraded Pyrrhotite. converting pyrrhotite (Fe 1-x S) to a ferronickel alloy (FeNi) and troilite (FeS). This thesis focuses on physically separating the FeNi and FeS phases, by either froth flotation or magnetic separation. The variables studied for froth flotation are pH, particle size, and additive concentrations.

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Flotation of pyrrhotite to produce magnetite

2013-9-1  This cannot be separated from magnetite by magnetic separation because both of these minerals are ferromagnetic and report to the magnetic separator concentrate. Previous research (e.g. Chang et al., 1954 , Cline et al., 1974 , Iwasaki, 1999 ) showed that flotation can be used to remove pyrrhotite.

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Pyrrhotite - an overview ScienceDirect Topics

Most sulfide minerals are nonmagnetic and can be rejected by magnetic separation. Monoclinic pyrrhotite, however, in contrast to hexagonal pyrrhotite, is magnetic and is recovered in magnetic concentrates. Previous research (Cline and Rosas, 1975; Iwasaki, 1999) has shown that flotation can be used to remove pyrrhotite.

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Flotation of pyrrhotite to produce magnetite

Low-intensity magnetic separation (LIMS) tests showed that LIMS upgraded the magnetite and the sulphur in the pyrrhotite at the same ratio. The final flotation reagent regimes and conditions for each deposit were different being related to differences in mineralogy and grind size. The pH ranged from natural to pH of 4.

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Electromagnetic Separation of Copper Iron Sulphides

2018-2-9  Pyrrhotite is separated raw as a magnetic product at Corinth, Vt., at Broken Hill, N. S. W., and in Sweden. The feebly magnetic or nonmagnetic varieties of pyrrhotite become strongly magnetic on being subjected to a slight roast at a low heat; only

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Pyrrhotite - an overview ScienceDirect Topics

Pyrrhotite is naturally magnetic with the increase of iron content. Pyrrhotite is a common and important constituent in mafic igneous intrusive rocks such as norites. It occurs as segregation in layered intrusions associated with Pentlandite, Chalcopyrite, and other sulfides.

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Magnetic Separation of Sulphide Minerals - 911

2016-12-4  new magnetic separator has been made available recently in limited quantity to research laboratories. This device, the Frantz Isodynamic Separator, has been used for the separation of various non- sulphides from each other. Its application to the separation of sulphides, however, does not seem to have been reported.

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US801879A - Method of separating pyrrhotite from ...

The residue remaining after the pyrrhotite has been removed by the magnetic separators is to be roasted for the oxidation of the iron of the chalcopyrite and other sulfur minerals present in any...

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CHAPTER 3 COMPARISON OF DIFFERENT PYRRHOTITE

2020-9-28  suppress pyrrhotite floatability (73), introducing separate pyrrhotite rejection circuits which by and large also exploit the fact that pyrrhotite floats poorly in alkaline solutions, and using magnetic separation to remove pyrrhotite from feed or concentrate streams (74, 75). These measures made significant improvements. For example, the pyrrhotite

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NICKEL AND COBALT ORES: FLOTATION - 911 Metallurgist

2016-6-7  Nickel sulRde minerals such as pentlandite can, ingeneral, be separated from their gangue bySotationusing a thiol group of collectors like xanthates andalkyl dithiophosphates in the presence of variety ofactivators, depressants and dispersants. Since nickelsulRdes contain other sulRdes such as pyrrhotite, pent-landite and chalcopyrite, the enrichment of nickel isgenerally carried out by two methods:

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The Magnetic Characteristics of Pyrrhotite

2011-7-13  5) The thermo-remanent magnetism of pyrrhotite is very strong, i. e. ten cr twenty times stronger than its natural magnetism. Using the above character, weakly magnetic pyrrhotite can be recovered 90% by magnetic separation (800 Gauss) after it was heated at 300°C for half an hour.

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Electromagnetic Separation of Copper Iron Sulphides

2018-2-9  Electromagnetic Separation of Pyrrhotite . Pyrrhotite, sp. gr. 4.5 to 4.65, is in most specimens strongly magnetic, but from some localities, as South Strafford, Vt., and certain places in Virginia, it is too feebly magnetic to be affected by intense magnetic fields.

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Magnetic Separation of Sulphide Minerals - 911

2016-12-4  pyrrhotite, however, sulphides have been thought nonmagnetic. A new magnetic separator has been made available recently in limited quantity to research laboratories. This device, the Frantz Isodynamic Separator, has been used for the separation of various non-

More

Physical Separation of Thermally Upgraded Pyrrhotite

2019-11-26  converting pyrrhotite (Fe 1-x S) to a ferronickel alloy (FeNi) and troilite (FeS). This thesis focuses on physically separating the FeNi and FeS phases, by either froth flotation or magnetic separation. The variables studied for froth flotation are pH, particle size, and additive concentrations.

More

Magnetic Separating Plant-Multi-types, Offer Quote

2021-6-15  Magnetic Separation Plant. Processing capacity: 10-280 t/h. Applied materials: magnetite, pyrrhotite, roasted ore, ilmenite, chromite, hematite, etc. Applications : wet and dry type magnetic separation for materials smaller than 3 mm such as magnetite, pyrrhotite, roasted ore and titanic iron ore. Case Description: The magnetic separation ...

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CHAPTER 3 COMPARISON OF DIFFERENT PYRRHOTITE

2020-9-28  suppress pyrrhotite floatability (73), introducing separate pyrrhotite rejection circuits which by and large also exploit the fact that pyrrhotite floats poorly in alkaline solutions, and using magnetic separation to remove pyrrhotite from feed or concentrate streams (74, 75). These measures made significant improvements. For example, the ...

More

Principles of Magnetic Separation - Minerallurgy

Magnetic separation has been used since 1955 and has proven to be one of the most effective processes for beneficiating magnetically susceptible materials (AI-Wakeel and EI-Rahman, 2006; Yavuz et al., 2006; Dobbins et aI., 2007, Dobbins et al., 2009; Das et aI., 2010; Angadi et al., 2012). Over the last three decades, the production of ... Magnetic Separation" class ...

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gravity separation examples, gravity separator,

2014-4-8  gravity separation examples, gravity separator, magnetic seperator,magnetic separation chemistry. Iron Sand Processing Plant is applicable for wet magnetic separation of materials such as magnetite, pyrrhotite, roasted ore and ilmenite whose size is less than 3 mm and also used for iron removal operation of materials such as coal ...

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2 Key Factors That Affect the Magnetic Separation

2019-10-28  There are two key factors that affect the magnetic separation method: one is the magnetic difference among minerals, another is the magnetic field distribution of magnetic separator. 1. Effect of magnetic differences among minerals. According to the magnetic differences, the minerals can be classified into strong magnetic minerals, weak ...

More

The Magnetic Characteristics of Pyrrhotite

2011-7-13  5) The thermo-remanent magnetism of pyrrhotite is very strong, i. e. ten cr twenty times stronger than its natural magnetism. Using the above character, weakly magnetic pyrrhotite can be recovered 90% by magnetic separation (800 Gauss) after it was heated at 300°C for half an hour.

More

Magnetic discrimination of pyrrhotite‐ and greigite ...

1996-7-1  Such thermal instability of greigite is a practical and important clue for its identification. Zero‐field warming of IRM from 5 to 300 K sensitively indicates the presence of pyrrhotite and trace magnetite in bulk samples without any magnetic separation.

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

2009-6-5  • Magnetic separation can only separate the magnetic pyrrhotite from the pentlandite concentrate • Flotation is used to remove pyrrhotite from the pentlandite concentrate. Microflotation Recovery of Pyrrhotite –pH 7. Microflotation Recovery of Pyrrhotite –pH 10.

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Physical Separation of Thermally Upgraded Pyrrhotite

2019-11-26  converting pyrrhotite (Fe 1-x S) to a ferronickel alloy (FeNi) and troilite (FeS). This thesis focuses on physically separating the FeNi and FeS phases, by either froth flotation or magnetic separation. The variables studied for froth flotation are pH, particle size, and additive concentrations.

More

Magnetic Separation - Washington University in St.

2002-2-13  Magnetic separation takes advantage of differences in the magnetic properties of minerals. Minerals fall into one of three magnetic properties: ferromagnetic, paramagnetic and diamagnetic. Ferromagnetic minerals are themselves magnetic (i.e., magnetite and pyrrhotite) and can be easily separated from other minerals with a magnet since they will ...

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The Desulfurization of Magnetite Ore by Flotation with a ...

2016-7-8  Pyrrhotite (Fe1 xS) is a kind of common sulfide which exists in magnetite ore as an associated mineral with little industrial value. The contamination of sulfur emanating from pyrrhotite in magnetite concentrates has been a problem in iron ore smelting process. However, the magnetic separation of pyrrhotite from magnetite

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CHAPTER 3 COMPARISON OF DIFFERENT PYRRHOTITE

2020-9-28  suppress pyrrhotite floatability (73), introducing separate pyrrhotite rejection circuits which by and large also exploit the fact that pyrrhotite floats poorly in alkaline solutions, and using magnetic separation to remove pyrrhotite from feed or concentrate streams (74, 75). These measures made significant improvements. For example, the ...

More

Principles of Magnetic Separation - Minerallurgy

Magnetic separation has been used since 1955 and has proven to be one of the most effective processes for beneficiating magnetically susceptible materials (AI-Wakeel and EI-Rahman, 2006; Yavuz et al., 2006; Dobbins et aI., 2007, Dobbins et al., 2009; Das et aI., 2010; Angadi et al., 2012). Over the last three decades, the production of ... Magnetic Separation" class ...

More

2 Key Factors That Affect the Magnetic Separation

2019-10-28  There are two key factors that affect the magnetic separation method: one is the magnetic difference among minerals, another is the magnetic field distribution of magnetic separator. 1. Effect of magnetic differences among minerals. According to the magnetic differences, the minerals can be classified into strong magnetic minerals, weak ...

More

Magnetic discrimination of pyrrhotite‐ and greigite ...

1996-7-1  Such thermal instability of greigite is a practical and important clue for its identification. Zero‐field warming of IRM from 5 to 300 K sensitively indicates the presence of pyrrhotite and trace magnetite in bulk samples without any magnetic separation.

More

The Magnetic Characteristics of Pyrrhotite

2011-7-13  5) The thermo-remanent magnetism of pyrrhotite is very strong, i. e. ten cr twenty times stronger than its natural magnetism. Using the above character, weakly magnetic pyrrhotite can be recovered 90% by magnetic separation (800 Gauss) after it was heated at 300°C for half an hour.

More

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

2009-6-5  • Magnetic separation can only separate the magnetic pyrrhotite from the pentlandite concentrate • Flotation is used to remove pyrrhotite from the pentlandite concentrate. Microflotation Recovery of Pyrrhotite –pH 7. Microflotation Recovery of Pyrrhotite –pH 10.

More

Physical Separation of Thermally Upgraded Pyrrhotite

2019-11-26  converting pyrrhotite (Fe 1-x S) to a ferronickel alloy (FeNi) and troilite (FeS). This thesis focuses on physically separating the FeNi and FeS phases, by either froth flotation or magnetic separation. The variables studied for froth flotation are pH, particle size, and additive concentrations.

More

Magnetic Separation - Washington University in St.

2002-2-13  Magnetic separation takes advantage of differences in the magnetic properties of minerals. Minerals fall into one of three magnetic properties: ferromagnetic, paramagnetic and diamagnetic. Ferromagnetic minerals are themselves magnetic (i.e., magnetite and pyrrhotite) and can be easily separated from other minerals with a magnet since they will ...

More

Magnetic separation, thermo- and magnetochemical ...

Iron sulfides in the form of ferrimagnetic pyrrhotite have been removed from solvent refined coal by the use of high gradient magnetic separation. The results of such separations have been correlated with those of studies of the thermochemical and magnetochemical properties of the undissolved solids present in the product of coal liquefaction.

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CHAPTER 3 COMPARISON OF DIFFERENT PYRRHOTITE

2020-9-28  suppress pyrrhotite floatability (73), introducing separate pyrrhotite rejection circuits which by and large also exploit the fact that pyrrhotite floats poorly in alkaline solutions, and using magnetic separation to remove pyrrhotite from feed or concentrate streams (74, 75). These measures made significant improvements. For example, the ...

More

The Magnetic Properties of Pyrrhotite Samples on

Japan's largest platform for academic e-journals: J-STAGE is a full text database for reviewed academic papers published by Japanese societies

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Partitioning of transition metals during magnetization of ...

2020-6-17  In the original oxidized pyrrhotite tailings, Ni and Cu were associated with goethite. Magnetization at 460 °C led to full conversion of goethite and jarosite into magnetite through solid-state transformation. 93% of the magnetite was recovered in the magnetic

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The Appearence of High New Magnetic Separator - kara liu ...

2012-10-15  Dry Magnetic Separator is applicable to a particle size less than 3mm magnetite, pyrrhotite, roasted ore, ilmenite and other materials wet magnetic separation, but also for coal, non-metallic minerals, building materials and other materials in addition to iron job.

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