magnetic separation pyrrhotite

magnetic separation pyrrhotite

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

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Pyrrhotite an overview ScienceDirect Topics

11.3.2.3 Sulfur removal. Magnetite ores often contain sulfide minerals including pyrrhotite and pyrite. 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

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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. The Pentlandite–Chalcopyrite–Pyrrhotite ore around the Sudbury

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Flotation of pyrrhotite to produce magnetite concentrates

Sep 01, 2013· Results from the magnetic separation of Hannukainen material showed that the magnetite and the sulphur within the magnetic pyrrhotite are were both upgraded at a similar ratio. The same upgrade ratio applied to the other Northland deposits. This is because practically all identified pyrrhotite was monoclinic, which is ferromagnetic.

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(PDF) FLOTATION OF PYRRHOTITE FROM MAGNETITE ORES A

Oct 14, 2012· magnetic separation (LIMS) stages of decre asing magnetic field (2x 900 Gauss and . 2x 600 Gauss). Here we report on the sources of magnetic anisotropy in pyrrhotite, an

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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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Principles of Magnetic Separation Minerallurgy

May 15, 2021· However, with the transformation into another form called pyrrhotite through caustic microwave treatment and microwave pre-treatment (Rowson and Rice, 1989; Butcher and Rowson 1994), pyrrhotite can be converted into a strongly paramagnetic form and can easily be separated from coal in only moderate magnetic field strengths.

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Flotation of pyrrhotite to produce magnetite concentrates

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.

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(PDF) FLOTATION OF PYRRHOTITE FROM MAGNETITE ORES

Oct 14, 2012· magnetic separation (LIMS) stages of decre asing magnetic field (2x 900 Gauss and . 2x 600 Gauss). Here we report on the sources of magnetic anisotropy in pyrrhotite, an

Read More
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.

Read More
Flotation of pyrrhotite to produce magnetite concentrates

As a first step, one-stage low intensity magnetic separation of mineral particles to produce rough concentrate of magnetic iron was applied under the condition of grinding fineness 65% -0.074 mm.

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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

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How Flotation is Affected by Chalcopyrite & Pyrrhotite

Jul 23, 2018· Pyrrhotite and chalcopyrite samples were separately crushed to minus 10 mesh, and the minus 10 mesh fractions were concentrated by dry magnetic separation. The magnetic fraction of the pyrrhotite sample analyzed 50.02% Fe, 29.75% S, 3.00% Ni and 0.36% Cu, and the non-magnetic fraction of the chalcopyrite sample analyzed 14.90% Cu, 30.55% S, 37

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Magnetic separation Wikipedia

Magnetic separation is the process of separating components of mixtures by using magnets to attract magnetic materials. Pyrrhotite 0.5 4 Paramagnetic Ilmenite 8 16 Siderite 9 18 Chromite 10 16 Hematite 12 18 Wolframite (,) 12 18 Tourmaline 16 20 In the 1860s, magnetic separation started to become commercialized.

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CHAPTER 3 COMPARISON OF DIFFERENT PYRRHOTITE

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

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NICKEL AND COBALT ORES: FLOTATION 911 Metallurgist

The monoclinic pyrrhotite, being magnetic, can be partly rejected by magnetic separation, while the hexagonal pyrrhotite is separated by Sotation. Pyrrhotite is known to Soat poorly in alkaline media; therefore the general practice is to selectively Soat pentlandite from pyrrhotite, by maintaining a highly alkaline pH with cyanide as depressant and

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Electromagnetic Separation of Copper Iron Sulphides

Feb 09, 2018· 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 Washington University in St. Louis

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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Magnetic Separation Plant Fote Machinery(FTM)

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 process is mainly made up of vibrating feeder, chute feeder, jaw crusher, vibrating screen, ball mill, classifier, magnetic separator, concentrator, and drying machine with the feeder, lifter, and conveyor

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Gradient Magnetic Separation an overview ScienceDirect

Luzheng Chen, Dahe Xiong, in Progress in Filtration and Separation, 2015. 2.3.1 Brief Review on High-Gradient. High-gradient magnetic separation has achieved remarkable progress and wide applications since Jones in 1955 achieved a high-gradient magnetic field in a magnetized matrix (Svoboda, 2004).By using magnetic matrix, magnetic force upon magnetic particles is remarkably increased

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