smelting oxidation desulfurization of copper slags

  • PHYSICOCHEMICAL CHARACTERIZATION OF COPPER

    slag/ton of blister copper in other smelters of the world. Physico-chemical characterization plays an important role in understanding the behaviour of slags during smelting processes and hence it is important to have a comprehensive knowledge about its management. In

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  • Slags copper smeltingRegistration DossierECHA

    EC number CAS number 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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  • An Innovated Application of Reutilize Copper Smelter Slag

    Nov 01 2018 · Characterization of the copper slag. The compositional analysis (Table 1) confirms the presence of iron silicon zinc and aluminum as the significant element in the copper slag and some other elements in lower level of concentrations such as calcium magnesium chromium and copper.This waste is regarded as hazardous materials in many countries due to the presence of heavy metals.

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  • Crystallization Behavior of Copper Smelter Slag NASA/ADS

    Copper slag is composed of iron silicate obtained by smelting copper concentrate and silica flux. One of the most important criteria for the utilization of this secondary resource is the recovery of iron from the slag matrix to decrease the volume of dumped slag. The molten oxidation process with crushing magnetic separation appears to be a more sustainable approach and is based on directly

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  • Wastes as resources update on recovery of valuable metals

    Copper production from sulphide minerals generates massive amounts of slag as final waste of the pyrometallurgical processes. Dumping the slag nearby the smelter plant has been the common practice and currently it is produced in a proportion of 2·2 ton of slag per ton of blister copper and is granulated to facilitate the transportation and final disposal.

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  • Slags copper smeltingRegistration DossierECHA

    EC number CAS number 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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  • Removal of Sulfur from Copper Smelting Slag by CO2

    In tube furnace the desulfurization of copper slag was investigated by changing the temperature and flow rate of CO 2. Thermodynamic simulation using FactSage 7.1 shows that increasing temperature and flow rate of CO 2 can promote the removal of sulfur and the desulfurization rate can reach up to 54.97 . The experiment shows that the removal

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  • MetallurgyMatte smelting Britannica

    MetallurgyMetallurgyMatte smelting The primary purpose of matte smelting is to melt and recombine the charge into a homogeneous matte of metallic copper nickel cobalt and iron sulfides and to give an iron and silicon oxide slag. It is done in many types of furnace on both roasted or unroasted sulfide feed material. The reverberatory furnace is essentially a rectangular refractory

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  • Flotation Of Copper Slag In New Zealand

    Copper slag is a by-product created during the copper smelting and refining process.As refineries draw metal out of copper ore they produce a large volume of non-metallic dust soot and rock llectively these materials make up slag which can be used for a surprising number of applications in the building and industrial fields.

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  • Copper processingRoasting smelting and converting

    Copper processingCopper processingRoasting smelting and converting Once a concentrate has been produced containing copper and other metals of value (such as gold and silver) the next step is to remove impurity elements. In older processes the concentrate containing between 5 and 10 percent water is first roasted in a cylindrical refractory-lined furnace of either the hearth or

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  • Metamodelling and optimization of copper flash smelting

    stageoxidation converting into metallic copper Q 2concentration of FeO in molten Fesilicate slag. The aim of the further optimization procedure is ob-taining the required values of Qopt 1 and Q opt 2. 3 Metamodelling of copper flash smelting process One of our main goals was to build and to com-pare three different approaches to

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  • USB1Situ desulfurization scrubbing process for

    A novel process for refining high or low impurity blister copper containing S As Sb Pb Ni Bi Se and/or Te to anode quality by means of a solution containing sulphates and alkali oxides is provided. More specifically the process comprises the steps of (1) injecting air/O 2 gas mixtures in the presence of an alkali source over a period of time sufficient to complete the sulphur removal

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  • Removal of Sulfur from Copper Smelting Slag by CO2

    In tube furnace the desulfurization of copper slag was investigated by changing the temperature and flow rate of CO 2. Thermodynamic simulation using FactSage 7.1 shows that increasing temperature and flow rate of CO 2 can promote the removal of sulfur and the desulfurization rate can reach up to 54.97 . The experiment shows that the removal

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  • Removal of Sulfur from Copper Smelting Slag by CO2

    The results mdicate 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

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  • Thermal decomposition of pyrometallurgical copper slag by

    The purpose of this study was to investigate the possibility of separating pyrometallurgical copper (fayalite) slag by oxidation in a synthetic air atmosphere into ferrous and silicate phases suitable for resources to be recovered from them.

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  • Advances in Molten Slags Fluxes and Salts Wiley Online

    May 16 2016 · Equilibria of Gold and Silver Between Molten Copper and FeO x ‐SiO 2 ‐Al 2 O 3 Slag in Weee Smelting at 1300 °C (Pages ) Katri Avarmaa Hugh O Brien

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  • SlagWikipedia

    Slag is the glass-like by-product left over after a desired metal has been separated (i.e. smelted) from its raw ore.Slag is usually a mixture of metal oxides and silicon dioxide.However slags can contain metal sulfides and elemental metals. 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

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  • Direct-to-blister smelting of copper concentrates the

    Keywords Sulphide smelting Copper Slag Blister copper Flash smelting Additional information The author is indebted to the R D staff of Outotec Oyj and in particular to Markku Kytö and Ilkka Kojo for their fruitful criticism and suggestions on the structure of this paper.

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  • Pretreated water-quenched-manganese-slag slurry for high

    Presently researches on the use of low-cost pulp or slag for desulfurization and denitrification has attracted much attention globally. However the efficiency of the NO x conversion remains low and has a short duration. Therefore we tried to activate the water-quenched-manganese-slag (WQMS) through the pretreatment method of calcination and additive calcination then mixed with KMnO 4

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  • An Innovated Application of Reutilize Copper Smelter Slag

    Nov 01 2018 · Characterization of the copper slag. The compositional analysis (Table 1) confirms the presence of iron silicon zinc and aluminum as the significant element in the copper slag and some other elements in lower level of concentrations such as calcium magnesium chromium and copper.This waste is regarded as hazardous materials in many countries due to the presence of heavy metals.

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  • steel slag copper ore concentration plant

    steel slag copper ore concentration plant We have steel slag magnetite ore concentration plantAt Port Orem New Jersey the New Jersey Iron Mining Co is operating a magneticconcentration plant on magnetite ores The ore carries magnetite in stringers and grains in a gangue of quartz and some finely disseminated apatite It is crushed in breakers and rolls to a size varying from 20 mesh to ¼ in

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  • Laboratory Extraction of Copper from Chalcocite by

    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

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  • Copper matteslag reaction sequences and separation

    of copper concentrate and synthetic slag was contacted at 1300°C and quenched after short time intervals. With this technique the sequences and reaction paths occurring between reacting concentrate flux matte and slag can be evaluated. 1.2 Copper Matte-Slag Interactions in Flash Smelting In general copper matte smelting can be described

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  • THE INFLUENCE OF THE SILICATE SLAG COMPOSITION ON

    (SiO2 FeO Fe3O4 CaO Al2O3) and the content of copper in the matte on resulting copper content in the slag during smelting of the sulfide concentrates in the reverberatory furnace. When comparing results obtained with MLRA model calculations with values measured at industrial level high degree of fitting is obtained (R2 = 0.974).

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  • Copper losses to slags obtained from the El Teniente process

    The products of smelting and oxidizing of copper concentrate with flux are two separate molten phases the high grade matte or white metal with the degree of oxidation being controlled so as to the copper losses in the slags from El Teniente pyrometallurgical process are

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  • Thermal decomposition of pyrometallurgical copper slag by

    The purpose of this study was to investigate the possibility of separating pyrometallurgical copper (fayalite) slag by oxidation in a synthetic air atmosphere into ferrous and silicate phases suitable for resources to be recovered from them.

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  • THE INFLUENCE OF THE SILICATE SLAG COMPOSITION ON

    (SiO2 FeO Fe3O4 CaO Al2O3) and the content of copper in the matte on resulting copper content in the slag during smelting of the sulfide concentrates in the reverberatory furnace. When comparing results obtained with MLRA model calculations with values measured at industrial level high degree of fitting is obtained (R2 = 0.974).

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  • Flotation Of Copper Slag In New Zealand

    Copper slag is a by-product created during the copper smelting and refining process.As refineries draw metal out of copper ore they produce a large volume of non-metallic dust soot and rock llectively these materials make up slag which can be used for a surprising number of applications in the building and industrial fields.

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  • Why is limestone added as a flux to furnance when smelting

    Apr 20 2018 · Why is limestone added as a flux to furnace when smelting metal ores From the Wikipedia article on Flux (metallurgy) "In the process of smelting inorganic chlorides fluorides (see fluorite) limestone and other materials are designated as "flu

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  • Efficient Synchronous Extraction of Nickel Copper and

    Jun 18 2020 · Electrochemical Co–desulfurization-deoxidation of low‒grade nickel‒copper matte in molten salts. Journal of The Electrochemical Society 165 E578–E583 (2018).

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  • Oxygen Pyrometallurgy at Copper CliffWelcome to TMS

    57 In 1896 Oliver Garretson described a logical process for continuous copper smelting converting and slag cleanup but it remained in two dimensions. 58 In 1968 Howard Worner described his WORCRA concepts "which seek to maximize energy conservation" by "direct smelting-converting in one furnace in which both smelting dispersed-phase

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  • "Physicochemical characterization of copper slag and

    Copper smelting residual metal recovery stockpile elimination by-product recovery. 1. Introduction . Ferrous and non ferrous slags have been the subject of research for some time seeking uses in a wide spectrum of possible applications 1 . Most of the copper produced in the world (80 90 )- is coming from sulphide ores that require oxidation

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  • 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 4 1 the temperature was 35°C the leaching time was 180 minutes the amount of (NH4)2S2O8 was 0

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  • Copper Smelting Chemistry TutorialAUS-e-TUTE

    Any copper(I) oxide present will be converted into copper(I) sulfide during the smelting process because copper has a higher affinity for sulfur than it does for oxygen. for example Cu 2 O FeS → Cu 2 S FeO. Impurities form a slag which floats on the surface and is easily removed. One of the reactions to remove iron impurities is shown below

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  • Materials Free Full-Text Influence of Desulfurization

    Generally in the nickel converter slag metals are mainly in the form of sulfides which are difficult to separate from slag. Although metal oxides in the slag such as NiO CoO and Cu2O are easily reduced into metal using carbon the presence of sulfur inhibits the reduction reaction. In this study the addition of Fe2O3 to nickel converter slag produced desulfurized slag which enhanced

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  • CopperSulphuric Acid

    The smelting stage is less oxidizing so that low copper slag can be produced. The converting stage is strongly oxidizing so that iron and sulphur can be sufficiently removed from the blister. Copper smelting processes can be classified as "bath" or "flash" smelting.

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  • The formation of magnetite in slag from the autogenous

    Slag magnetite autogenous smelting sulphide copperzinc concentrate . 1. Introduction . Matte and iron silicate slags during autogenous smelting of sulphide copper zinc concentrates are formed inVanyukov s furnace 1 2 . Significant quantity of non -ferrous metals is lost in slags (Cu Zn Pb etc.). Slags are stockpiled

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