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pyrometallurgy iron and copper separation

Pyrometallurgy - an overview ScienceDirect Topics

After the reduction of size via physical techniques, WEEE essentially transferred into smelters for separation and recovery of copper and other precious metals. In the pyrometallurgical process, the liberation of valuable metals is achieved by smelting in furnaces at high temperatures. In these processes, metals are sorted by exploiting their chemical and metallurgical properties. “Bath” or “flash” smelting are known as the copper smelting processes. Bath smelting

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Effect of Iron Phase Evolution on Copper Separation from ...

09/08/2018  Copper slag, a by-product of copper pyrometallurgy, inevitably contains a certain amount of copper. Oxygen-enriched smelting technologies increase the copper content in slag indirectly because of the production of higher-grade matte. The effect of iron phase evolution on the copper content in slag during the slag cleaning process in an electric furnace was investigated using the method of combining theory with experiments. Based on the analysis, the main factors that impede the separation

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Pyrometallurgy Metallurgy for Dummies

These separation techniques form the basis of thermal smelting and refining operations. Pyrometallurgy is a branch of extractive metallurgy. It consists of the thermal treatment of minerals and metallurgical ores and concentrates to bring about physical and chemical transformations in the materials to enable recovery of valuable metals. Pyrometallurgical treatment may produce saleable products ...

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RECOVERY OF IRON FROM COPPER FLASH SMELTING SLAGS

copper must be also as a separate phase due to the limited mutual solubility between iron and copper under these conditions. Thus, this iron alloy requires a further treatment for decreasing copper to a lower content in the final metal phase. However, the copper content in the final slag decreases to a minimum value of 0.06% and the iron decreases from 28.53% to 7.11% with the increasing of coke addition sug-

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ISASMELT TM SLAG CHEMISTRY AND COPPER ... - Pyrometallurgy

The bath principally consists of molten iron-silicate slag and molten copper matte. Due to the agitated state of the bath, the matte and slag are periodically tapped out to-gether through a single taphole to either of two RHF via water cooled copper launders. The RHFs are required to provide a phase separation, allowing clean slag and matte to

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Pyrometallurgical Recovery Of Metals From Electronic

Separation of components through unity operations of mining treatment Out of these three methods the most commonly used method by all the recycling companies in UK and Europe are Pyrometallurgy and / or Robust Pyroprocess (another method) respectively because of their simplicity and high efficiency / capacity (even though the energy requirements for these processes are high) (Jan Tytgat, 2010).

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Chapter 6 Copper Production Technology

Heat-induced separation of complex sulfides into copper sulfides, iron sulfides, and sulfur; removal of sulfur as off gas (SO2) and removal of gangue via slag; in oxygen-charged systems, partial (50-90°/0) oxidation of iron to produce iron oxide removed in the slag and

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Recovery of cobalt, nickel, and copper ... - Pyrometallurgy

The PGMs follow the nickel, copper, and iron through the pyrometallurgical process, and can be extracted from the hydrometallurgical leach residues for further processing. Water atomization of alloys. Cobalt-rich iron alloys are virtually unbreakable, which poses a problem of delivery of the alloy to the downstream process units. It is common practice in a number of slag-cleaning processes to add

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Copper extraction - Wikipedia

16/07/2004  Copper extraction refers to the methods used to obtain copper from its ores. The conversion of copper consists of a series of physical and electrochemical processes. Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors. As in all mining operations, the ore must usually be beneficiated. The processing techniques depend on the nature of the ore. If the ore is primarily sulfide copper

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Innovative methodology for separating copper and iron

10/09/2019  The Fe-Cu alloy, that is generated at the bottom of an electric furnace (EF) in a zinc pyrometallurgical smelter, is considered as a kind of solid waste. To separate the copper and iron from this waste, an innovative technology that uses selective oxidation smelting in the absence of SiO 2 is proposed herein. The constituents, phases and morphology of the samples were initially investigated

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Effect of Iron Phase Evolution on Copper Separation

Copper slag, a by-product of copper pyrometallurgy, inevitably contains a certain amount of copper. Oxygen-enriched smelting technologies increase the copper content in slag indirectly because of the production of higher-grade matte. The effect of iron phase evolution on the copper content in slag during the slag cleaning process in an electric furnace was investigated using the method of combining

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Pyrometallurgy Metallurgy for Dummies

Pyrometallurgy Basic Principle. The basic premise of most pyrometallurgical operations is simple: high-temperature chemistry is employed to segregate valuable metals in one phase while rejecting gangue and impurities in another phase. In most instances, both phases are molten (such as the matte and slag in a conventional copper smelting operation). The gas phase may also be used to advantage, either as a means of separating

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Pyrometallurgy - Wikipedia

Pyrometallurgy is a branch of extractive metallurgy. It consists of the thermal treatment of minerals and metallurgical ores and concentrates to bring about physical and chemical transformations in the materials to enable recovery of valuable metals. Pyrometallurgical treatment may produce products able to be sold such as pure metals, or intermediate compounds or alloys, suitable as feed for further processing.

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RECOVERY OF COPPER FROM SMELTING SLAG BY SULPHATION ...

Abstract: In this work extraction of copper and iron from a reverberatory furnace slag was studied. A two-step extraction procedure was followed. The first step was roasting of the slag in the presence of sulphuric acid at temperatures between 150 and 800 oC. The second step was leaching of the resulting calcine with distilled water. The maximum copper extraction of about 94% was achieved. In ...

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Chapter 6 Copper Production Technology

Heat-induced separation of complex sulfides into copper sulfides, iron sulfides, and sulfur; removal of sulfur as off gas (SO2) and removal of gangue via slag; in oxygen-charged systems, partial (50-90°/0) oxidation of iron to produce iron oxide removed in the slag

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Recovery of cobalt, nickel, and copper ... - Pyrometallurgy

Mintek has developed a leaching process that solubilizes the nickel, copper, and cobalt, while rejecting the iron and any sulphur into the solid residue (by decreasing the pH appropriately). The resulting solution can be processed further to separate the cobalt, nickel, and copper from each other via conventional technology. Mintek has also developed direct solvent extraction of cobalt from cobalt-bearing nickel

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Charge Calculations in Pyrometallurgical Processes

The grade of the matte is defined as the copper grade of matte A matte of 40 percent means, it has 40% copper, so matte is always given in terms of copper, because it is used to produce copper not iron Slag in matte smelting is mixture of oxides e.g. in smelting of copper ore concentrate the slag may contain SiO 2, Al 2 O 3, calcium oxide, FeO ...

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SEPARATION OF COPPER FROM A LEACHING SOLUTION

Parameters that influence the process, such as pH, extractant concentration, and the aqueous/organic (A/O) ratio were investigated. Solvent extraction experiments were carried out in two stages: i) separation of zinc, aluminum, and residual iron, and ii) copper separation. The results showed that the leaching obtained around 60% aluminum, 94% copper, 76% zinc, 50% nickel and residual iron from

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Enhanced methods for nickel recovery from low-grade

Iron is recovered in the slag, and sulfur as sulfur dioxide. At this stage, pyrometallurgy and hydrometallurgy processes can be used to refine the metals. In pyrometallurgy, metals are separated from the contents of the matte by using heat – to separate based on chemical and physical characteristics such as melting point and density.

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Improving Beneficiation of Copper and Iron from Copper ...

an improvement of beneficiation of copper and iron. Keywords: copper slag; slag modification; flotation; magnetic separation; mineral grain size growth; recycling 1. Introduction Pyrometallurgy is the dominant technology for current copper extraction, by which almost 80% of total copper in the word has been generated [1]. Approximately 2.0–3.0 tons of copper slag

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Pyrometallurgy Metallurgy for Dummies

Pyrometallurgy Basic Principle. The basic premise of most pyrometallurgical operations is simple: high-temperature chemistry is employed to segregate valuable metals in one phase while rejecting gangue and impurities in another phase. In most instances, both phases are molten (such as the matte and slag in a conventional copper smelting operation). The gas phase may also be used to advantage, either

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(PDF) Pyrometallurgy - ResearchGate

copper (an impure form of copper).The converting process can be subdivided into two stages: (i) Slag-forming stage̶FeS is ox idized to iron oxide and absorb ed by the slag

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Combination of Pyrolysis and Physical Separation to ...

like copper, tin, and iron in the pyrolysis residues were separated by selective crushing, sieving, gravity separation, and magnetic separation. Finally, rich copper (Cu 82.21%, Sn 1.47%), rich tin (Cu 53.20%, Sn 13.43%), rich iron (Fe> 63%), and non-metal products were obtained, and the total recoveries of copper, tin, and iron were 95%, 86%, and 76%, respectively. INTRODUCTION Since the ...

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RECOVERY OF COPPER FROM SMELTING SLAG BY SULPHATION ...

Abstract: In this work extraction of copper and iron from a reverberatory furnace slag was studied. A two-step extraction procedure was followed. The first step was roasting of the slag in the presence of sulphuric acid at temperatures between 150 and 800 oC. The second step was leaching of the resulting calcine with distilled water. The maximum copper extraction of about 94% was achieved. In ...

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Charge Calculations in Pyrometallurgical Processes

The grade of the matte is defined as the copper grade of matte A matte of 40 percent means, it has 40% copper, so matte is always given in terms of copper, because it is used to produce copper not iron Slag in matte smelting is mixture of oxides e.g. in smelting of copper ore concentrate the slag may contain SiO 2, Al 2 O 3, calcium oxide, FeO ...

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Extracting iron and copper - Obtaining and using metals ...

Extracting iron and copper Ores. Unreactive. metals. such as gold are found in the Earth's crust. as the uncombined elements. However, most metals are found combined with other elements to form ...

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Efficient heterogeneous precipitation and separation of ...

01/10/2020  In the separation process, the formations of iron-carbonate complexes on the surface of dolomite were the main intermediate phases which would transform into ferric iron precipitate under the heating promotion. Furtherore, the existence of the remaining magnesium carbonate played the role in bufferring the solution pH in the range 4–5, successfully preventing the co-precipitation of copper

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Recovery of Waste Printed Circuit Boards Through ...

01/01/2019  Industrial grade pyrometallurgy is usually direct put the WPCBs containing 5%–40% copper into the blast furnace, and the product is black copper containing 70%–85% copper. The black copper is then poured into the converter, which makes an oxidizing slag of Pb, Zn, and Sn, and the copper that contains 95% copper content. The crude copper is then added to the anode furnace,

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Hydrometallurgical processing of impurity streams ...

The pyrometallurgy of copper begins with the smelting of copper concentrate to copper matte. This process generates impurities streams in the form of flue dust and APB (i.e. wet gas scrubbing liquids). During smelting, a process gas stream is produced into which various impurities are volatilized along with dust, the latter being the result of incomplete smelting of concentrate particles and which includes

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