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smelting oxidation desulfurization of copper slags

While particle combustion and chalcopyrite oxidation in suspension smelting is well understood, few studies are available regarding the melt-melt reactions and the separation between copper matte and slag in matte smelting. In the present work, ... Further desulfurization and deironization reactions will occur, mainly through ...

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350Th Sand Production Line In Turkey
350Th Sand Production Line In Turkey

The 200-350t/h sand production line in Turkey is designed in August, 2014, and put into use in October. .

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Sand Making Plant
Sand Making Plant

Equipped with vibrator feeder, jaw crusher, sand maker (vertical shaft impact crusher), vibrating screen, sand washer, belt conveyor and central electronic control, sand making plant can process the granite, limestone, basalt, cobble and other materials t

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Dry Mixed Mortar Plant
Dry Mixed Mortar Plant

Dry mixed mortar plant is designed for enterprises which have small production scale of special dry mortar. It is a kind of modular production line which can meet the needs of producing multiple species dry mixed mortar and ordinary mortar in small bat

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Alternative Reduction of Copper Matte in Reduction
Alternative Reduction of Copper Matte in Reduction

continuous development of copper smelting technology, the smelting intensity and matte grade increasing, matte in cop- ... Gyurov made copper slag oxidation decomposed under pure oxygen system, got ... CaO is one of the most basic desulfurization reagents, but there is a good effect when graphite is added ...

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A Study on Reduction of Copper Smelting Slag by Carbon
A Study on Reduction of Copper Smelting Slag by Carbon

Copper smelting slag is a solution of molten oxides created during the copper smelting and refining process, and about 1.5 million tons of copper slag are generated annually in Korea. The oxides in copper smelting slag include ferrous FeO, ferric oxide Fe2O3, silica SiO2 from flux, alumina AI2O3, calcia CaO and magnesia MgO. The main oxides in copper slag, which are iron oxide

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Slags copper smelting Registration Dossier ECHA
Slags copper smelting Registration Dossier ECHA

Sep 11, 2020 EC number 266-968-3 CAS number 67711-92-6 Slag resulting from the smelting of a heterogeneous mixture of copper and precious metals from primary and secondary sources and plant reverts. Major constituents are iron oxide and silicon dioxide with minor amounts of copper, lead, nickel and various non-ferrous metals and oxides.

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Characteristics and utilisation of copper slaga review
Characteristics and utilisation of copper slaga review

Nov 01, 2003 The first purpose of matte smelting is to ensure sulfidisation of all copper present in the charge so that it enters the matte phase which can be represented as follows Johansen et al., 1970 1 FeS l Cu 2 O l, slag FeO l, slag Cu 2 S l 2 G 0 350004.6T 0 K kcal kg mol

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Minimization of Copper Losses in Copper Smelting Slag
Minimization of Copper Losses in Copper Smelting Slag

Sep 21, 2012 In the quest to achieve the highest metal recovery during the smelting of copper concentrates, this study has evaluated the minimum level of soluble copper in iron-silicate slags. The experimental work was performed under slag-cleaning conditions for different levels of Fe in the matte and for a range of FeSiO2 ratios in the slag. All experiments were carried out under conditions where

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The formation of magnetite in slag from the autogenous
The formation of magnetite in slag from the autogenous

The formation of magnetite in slag from the autogenous smelting of sulphide copper - zinc concentrates ... after autogenous smelting of sulphide copper - zinc concentrates in Vanyukovs furnace were determined by the statistic ... The degree of oxidation which is equal to FeIII FeII ratio is 0.056. The mass of the w orking body is 93 kg.

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BACKGROUND REPORT PRIMARY COPPER SMELTING
BACKGROUND REPORT PRIMARY COPPER SMELTING

layer of slag, which floats on top of the molten matte, and much of the sulfur in the charge is released as sulfur dioxide SO 2. The slag is frequently skimmed, and the matte is periodically tapped. Heat required for the melting process comes from partial oxidation of

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Copper slag as a catalyst for mercury oxidation in coal
Copper slag as a catalyst for mercury oxidation in coal

Copper slag is a byproduct of the pyrometallurgical smelting of copper concentrate. It was used in this study to catalyze elemental mercury Hg 0 oxidation in simulated coal combustion flue gas.The copper slag exhibited excellent catalytic performance in Hg 0 oxidation at temperatures between 200 C and 300 C. At the most optimal temperature of 250 C, a Hg 0 oxidation efficiency of 93.8 ...

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THE INFLUENCE OF THE SILICATE SLAG COMPOSITION
THE INFLUENCE OF THE SILICATE SLAG COMPOSITION

will enable better management of the copper losses in the smelting slag. This is resulting from the fact that regulation of the input charge composition can be used for control of the copper losses in the smelting slag, also the degree of desulphurization obtained during oxidative roasting can be used for control of the copper content in the ...

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Copper from Copper Smelting Slag by Oxidation Leaching
Copper from Copper Smelting Slag by Oxidation Leaching

In this paper, copper was recovered from copper smelting slag by oxidation-ammonia leaching under normal pressure. Ammonia persulfate was employed as oxidizing agent and ammonia as complexing. The results showed that the optimal parameters were as following the mass ratio of liquid and solid was 41, the temperature was 35 C, the leaching time was 180 minutes, the amount of NH42S2O8 was 0 ...

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Improvement in the Properties of Copper Smelting Slag
Improvement in the Properties of Copper Smelting Slag

Slags produced from iron and steel making industry or non-ferrous smelting plants are now considered one of the important domestic resources in various fields. Although the most copper smelting slags have been used in cement plant as a component of iron oxide in clinker, the market is not big enough to consume the amount of slag available, and furthermore, advanced usage of slag with higher ...

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Gold Smelting amp Refining Process 911 Metallurgist
Gold Smelting amp Refining Process 911 Metallurgist

Feb 28, 2016 In general, slag from smelting process arises from extraneous materials such as rust and oxides oxidation of elements in the charge e.g. iron, copper, zinc residues from fuels fluxes employed in the process silica, borax, sodium nitrate, sodium carbonate, fluorspar crucible erosion. Then, slag can vary in appearance and chemical ...

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What is Slag with pictures
What is Slag with pictures

Jan 27, 2021 Mary McMahon Date January 27, 2021 Aluminum is a common component of slag, along with silicon and magnesium.. Slag is a byproduct of metal smelting, and hundreds of tons of it are produced every year all over the world in the process of refining metals and making alloys.Like other industrial byproducts, slag actually has many uses, and rarely goes to waste.

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PDF LATE BRONZE AGE COPPER SMELTING SLAGS FROM
PDF LATE BRONZE AGE COPPER SMELTING SLAGS FROM

In the Late Bronze Age, the extractive metallurgy of copper in north-eastern Italy achieved a peak of technological efficiency and mass production, as evidenced by the substantial number of metallurgical sites and the large volume of slags resulting

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Phase analytical studies of industrial copper smelting
Phase analytical studies of industrial copper smelting

Oct 03, 2004 The pyrometallurgical extraction of copper from sulfide ore concentrates is determined by the behaviour of the associated iron during smelting. Hence, 57Fe M ssbauer spectroscopy is an attractive tool for studying the phases in silicate slags from German and Chilean smelting plants. Other methods used were ore microscopy, electron microprobe analysis, and X-ray powder diffraction.

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Copper Blast Furnace SmeltingCopper
Copper Blast Furnace SmeltingCopper

1. Wide adaptability to raw material, from iron, copper, copper-nickel, zinc, lead and zinc-lead complex concentrate 2. Application of rich-oxygen air blast offers high smelting temperature, enhances hearth capacity and generates high concentration SO 2 gas suitable for sulfuric acid-making 3.

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123 Primary Copper Smelting
123 Primary Copper Smelting

12.3 Primary Copper Smelting 12.3.1 General1 Copper ore is produced in 13 states. In 1989, Arizona produced 60 percent of the total ... types have self-generating energy by the exothermic oxidation of hydrogen sulfide, shown in the reaction below. ... Because copper has a higher affinity for sulfur than oxygen, the copper in the slag as copper ...

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Crystallization Behavior of Copper Smelter Slag During
Crystallization Behavior of Copper Smelter Slag During

Copper slag is composed mainly of iron silicates Fe, Al, Ca, Mg,x SiOy obtained by smelting copper concentrate and silica ux. One of the most important criteria for the utilization of this secondary resource is the recovery of iron from the slag matrix, which has a concentration of nearly 40 mass pct that could eectively decrease the ...

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RECOVERY OF IRON FROM COPPER FLASH SMELTING
RECOVERY OF IRON FROM COPPER FLASH SMELTING

Recovery of Iron from Copper Flash Smelting Slags Figure 3 shows the rapid decreasing of copper content in the slag during the first 15 min-utes with the graphite rod introduced into the melt, while the iron concentration is main-tained almost constant over same period of

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smelting oxidation desulfurization of copper slags
smelting oxidation desulfurization of copper slags

Jan 13, 2021 Slag formed in the smelting and converting reactions flows to the slag well. Slag cleaning occurs as a result of contact with lower grade matte in passing through zone 1, by the roast reaction of copper sulfide and copper oxides by the reduction of copper oxide by sulfur and ferrous sulfide, and by the reduction of magnetite.

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Slags copper smelting Registration Dossier ECHA
Slags copper smelting Registration Dossier ECHA

EC number 266-968-3 CAS number 67711-92-6 Slag resulting from the smelting of a heterogeneous mixture of copper and precious metals from primary and secondary sources and plant reverts. Major constituents are iron oxide and silicon dioxide with minor amounts of copper, lead, nickel and various non-ferrous metals and oxides.

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RECOVERY OF COPPER FROM SMELTING SLAG BY
RECOVERY OF COPPER FROM SMELTING SLAG BY

Pyrometallurgical production of copper generates two slags smelting furnace slag and converter slag which contain 0.5-2 Cu and 2-8 Cu, respectively. The following three methods are generally utilized for recovering the copper from these slags on an industrial scale i recycling of the converter slag to the smelting furnace, ...

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PHYSICOCHEMICAL CHARACTERIZATION OF COPPER
PHYSICOCHEMICAL CHARACTERIZATION OF COPPER

PHYSICOCHEMICAL CHARACTERIZATION OF COPPER SLAG AND ALTERNATIVES OF FRIENDLY ENVIRONMENTAL MANAGEMENT M. S ncheza, M. Sudburyb, a Director Escuela Ciencias de la Tierra Universidad Andres Bello Salvador Sanfuentes, Santiago, Chile b Director MPS Consulting, Oakville, Ontario, Canada Received 14 August 2012 accepted 15 March 2013

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Introduction of Matte Droplets in Copper Smelting Slag
Introduction of Matte Droplets in Copper Smelting Slag

Feb 09, 2017 Abstract. Smelting is an important process in copper production to produce matte and slag. The slag, containing about 112 Cu, can be further processed to recover the copper contaminated, but recycle of the slag concentrate reduces overall productivity and

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Minimization of Copper Losses in Copper Smelting Slag
Minimization of Copper Losses in Copper Smelting Slag

In the quest to achieve the highest metal recovery during the smelting of copper concentrates, this study has evaluated the minimum level of soluble copper in iron-silicate slags. The experimental work was performed under slag-cleaning conditions for different levels of Fe in the matte and for a range of FeSiO SUB 2 SUB ratios in the slag. All experiments were carried out under conditions ...

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Slag PM Recovery Precious Metals from Old Slag
Slag PM Recovery Precious Metals from Old Slag

A. Slag is the glass-like by-product left over after a desired metal has been separated from its raw ore. While slags are generally used to remove waste in metal smelting, they can also serve other purposes, such as assisting in the temperature control of the smelting, and minimizing any re-oxidation of the final liquid metal product before the molten metal is removed from the furnace and used ...

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Arsenate capacities of copper smelting slags
Arsenate capacities of copper smelting slags

Apr 11, 2003 The arsenate capacity model, based on the Reddy-Blander model, was developed for copper smelting slags. The arsenate capacities of FeO-SiO2, CaO-SiO2, MgO-SiO2, FeO-FeO1.5-CuO0.5-MgO-SiO2, and FeO-FeO1.5-CuO0.5-CaO-MgO-SiO2 slags in equilibrium with different grades of copper mattes 21 to 79 wt pct Cu at 1573 K were studied. The calculated arsenate capacities using the RB model in copper ...

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Smelting Oxidation Desulfurization of Copper Slags
Smelting Oxidation Desulfurization of Copper Slags

Dec 01, 2012 According to the mechanism of sulfur removal easily through oxidation, the process of smelting oxidation desulfurization of copper slags is studied, which supplies a new thinking for obtaining the molten iron of lower sulfur content by smelting reduction of copper slags. Special attention is given to the effects of the holding temperature, the holding time and CaF 2, CaO addition amounts on the desulfurization rate of copper slags.

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Smelting Oxidation Desulfurization of Copper Slags
Smelting Oxidation Desulfurization of Copper Slags

Amount of Ca 2 of copper slags affects the desulfurization rate greatly, and the slag desulfurization rate is reduced by adding amount of CaF 2 and CaO. Compared with CaF 2, CaO is negative to slags sulfur removal with equal Ca 2 addition. Under the air flow of 0.3 Lmin, the sulfur content of copper slags can be reduced to 0.00467 in the condition of the holding time of 3 min and the holding

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Smelting Oxidation Desulfurization of Copper Slags
Smelting Oxidation Desulfurization of Copper Slags

The results indicate that the rate of copper slags smelting oxidation desulfurization depends on the matte mass transfer rate through the slag phase. After the oxidation treatment, sulfur of copper slags can be removed as SO2 efficiently. Amount of Ca2 of copper slags affects the desulfurization rate greatly, and the slag desulfurization rate is reduced by adding a certain amount of CaF2 and CaO. Compared with CaF2, CaO is negative to slags

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Smelting Oxidation Desulfurization of Copper Slags
Smelting Oxidation Desulfurization of Copper Slags

Smelting Oxidation Desulfurization of Copper Slags According to the mechanism of sulfur removal easily through oxidation, the process of smelting oxidation desulfurization of copper slags is studied, which supplies a new thinking for obtaining the molten iron of lower sulfur content by smelting

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PDF Looping Sulfide Oxidation Process for Anode Copper
PDF Looping Sulfide Oxidation Process for Anode Copper

The copper melt is sent to anode casting and then on to electrolysis. Description of Looping Sulfide Oxidation Copper Smelting Process Looping Sulfide Oxidation of copper concentrates feature three major steps desulfurization, smelting, and looping oxide regeneration Figure 2.

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Copper matte slag reaction sequences and separation
Copper matte slag reaction sequences and separation

a high concentration of copper. Silica is used in matte smelting to form molten iron-silicate slag with the iron oxides produced in Reaction 1 2 Reactions 1 and 2 are xthe basic processes involved in matte smelting of copper sulfide concentrates. Reaction 1 is initiated in flash smelting process by contacting concentrate particles with oxygen and a

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Smelting chlorination method applied to removal of copper
Smelting chlorination method applied to removal of copper

Jan 14, 2015 In order to reasonably utilize the iron resources of copper slags, the smelting chlorination process was used to remove copper from copper slags. Higher ho However, the Cu2O mode is formed by the reaction of surplus O2 and CuCl with O2 flow rate increasing over 0.4 Lmin, causing CuCl volatilization rate and copper removal rate to decrease.

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Laboratory Extraction of Copper from Chalcocite by
Laboratory Extraction of Copper from Chalcocite by

Jun 23, 2019 This facilitates copper separation from the slag during smelting by increasing the size of the globules. Copper Smelting Two factors must be considered in smelting these pellets 1 They contain up to one percent sulfur which will enter the metal or form a small amount of matte, and 2 not all of the copper oxide is reduced, so small amounts of Cu2O remain in the sample.

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