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separation of pyrite and pyrrhotite from iron ore

The process of realizing iron ore beneficiation

Feb 01, 2021· 2.Desulfurization by reverse flotation of iron ore. Sulfur as harmful impurities in iron ore generally exists in the form of pyrite and pyrrhotite. The sulfur in the form of pyrite can be removed by xanthate flotation or magnetic separation, and in the form of pyrrhotite.

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US2342277A Separation of pyrite, arsenopyrite, and

US2342277A US474491A US47449143A US2342277A US 2342277 A US2342277 A US 2342277A US 474491 A US474491 A US 474491A US 47449143 A US47449143 A US 47449143A US 2342277 A US2342277 A US 2342277A Authority US United States Prior art keywords arsenopyrite pyrite flotation pyrrhotite permanganate Prior art date 1943-02-02 Legal status (The legal status is an assumption

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Pyrrhotite an overview ScienceDirect Topics

G.W. Heyes, in Iron Ore, 2015. 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 concentrates.

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Recycling of iron from red mud by magnetic separation

Jul 20, 2014· A recycling process of iron from red mud by magnetic separation is proposed, in which iron oxide (Fe 2 O 3) in red mud transforms to magnetite (Fe 3 O 4) by anaerobic co-roasting with pyrite (FeS 2).TG-DTA and XRD results showed that hematite was reduced to magnetite by the thermo-decomposed compounds (iron monosulfide, pyrrhotite and element sulfur) of pyrite.

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separation of pyrite ore

Gravity Separation Of Iron Ore Magnetite In comparison magnetite ore has lower iron content when mined of between 25 and 40 Fe and requires processing or magnetic separation to separate magnetic minerals from other minerals in the ore The main iron mineral in magnetite ore is the ferrous iron oxide magnetite Fe3O4 which when processed produces

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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 average specific gravity of 4.6.

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The process of realizing iron ore beneficiation

2.Desulfurization by reverse flotation of iron ore. Sulfur as harmful impurities in iron ore generally exists in the form of pyrite and pyrrhotite. The sulfur in the form of pyrite can be removed by xanthate flotation or magnetic separation, and in the form of pyrrhotite.

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Recycling of iron from red mud by magnetic separation

Jul 20, 2014· A recycling process of iron from red mud by magnetic separation is proposed, in which iron oxide (Fe 2 O 3) in red mud transforms to magnetite (Fe 3 O 4) by anaerobic co-roasting with pyrite (FeS 2).TG-DTA and XRD results showed that hematite was reduced to magnetite by the thermo-decomposed compounds (iron monosulfide, pyrrhotite and element sulfur) of pyrite.

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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.

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Effect of microwave heating on magnetic separation of pyrite

Experimental results revealed that the highest content of iron (3.70%) in kaolin ore was in the particle size range from 60 to 74 μm, and pyrite was the main occurrence of iron in the kaolin ore.

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Pyrrhotite: Physical properties, uses, composition

Some pyrrhotite contains as much as 5% nickel by weight. That can be enough for the pyrrhotite to be mined as an ore of nickel. [1] Pyrrhotite has been a historic source of iron and sulfur. However, the iron extracted was contaminated with sulfur which made the iron unsuitable for use. Sulfur is no longer made from pyrrhotite because it is

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Pyrrhotite Processing BCC di Valledolmo

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.

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Tailings Wikipedia

Tailings are the materials left over after the process of separating the valuable fraction from the uneconomic fraction of an ore.Tailings are distinct from overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining without being processed.. The extraction of minerals from ore can be done two ways: placer mining, which uses water

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pyrite Properties & Facts Britannica

Pyrite, a naturally occurring iron disulfide mineral. The name comes from the Greek word pyr, ‘fire,’ because pyrite emits sparks when struck by metal. Pyrite is called fool’s gold; to the novice its color is deceptively similar to that of a gold nugget.

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Pyrite Mineral Uses and Properties

What is Pyrite? Pyrite is a brass-yellow mineral with a bright metallic luster.It has a chemical composition of iron sulfide (FeS 2) and is the most common sulfide mineral.It forms at high and low temperatures and occurs, usually in small quantities, in igneous, metamorphic, and sedimentary rocks worldwide. Pyrite is so common that many geologists would consider it to be a ubiquitous mineral.

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Difference Between Pyrite and Chalcopyrite Compare the

Mar 29, 2016· Pyrite: Pyrite has the chemical formula FeS 2, and it is an iron sulfide mineral. Chalcopyrite: The chemical formula of chalcopyrite is CuFeS 2. It is a copper iron sulfide mineral which has a greater economic value since it is the most important copper ore on Earth. Extent of Oxidization of Pyrite and Chalcopyrite:

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CN102770214A Separation of cooper minerals from pyrite

CN102770214A Separation of cooper minerals from pyrite using air-metabisulfite treatment Google Patents

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pyrrhotite magnetic separator Simone Pachur

Pyrrhotite ore magnetic separator used in pyrite magnetic. Pyrrhotite ore magnetic separator used in pyrite magnetic separation plant Pyrite pale yellow brass surface often with yellow brown tarnish Green black brown or black With strong metallic luster Opaque no cleavage jagged shape hardness is 6 65 the relative density is 49 . More Details

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Gold-Pyrite ores

Where the gold is intimately associated with various sulphide minerals, especially iron sulphides which include pyrite, arsenopyrite and pyrrhotite, flotation recovery of the gold is dependent on recovery of the associated minerals. In this case gold follows the associated sulphide mineral recovery.

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Mining Industry Copper Sulfide Ore and Flotation Process

1 Types of copper sulfide ore (1) Single copper mineral Its ore characteristic is relatively simple, and the only useful component that can be recycled is copper. The gangue minerals are mainly quartz, carbonate and silicate. (2) Copper-sulfur ore Called copper-bearing pyrite. In addition to copper minerals, iron sulfide can be recovered, and the main mineral of sulfur is pyrite.

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