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Smelting Oxidation Desulfurization of Copper Slags ...

2012-12-1 · Copper slags smelting oxidation desulfurization is gas-liquid reaction, possible reaction process of which can be illustrated as the following equations: Cu2S+|-02-f-;ySi02=Cu20 · ySi02+S02 (1) FeS- -02+xSi02=FeO · xSi02+S02 (2) 16 Journal of Iron and Steel Research, International Vol. 19 It consists of five steps as follows: 1) 02 ...

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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 reduction of copper slags. Special attention is given to the effects of the holding temperature, the ...

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Smelting Oxidation Desulfurization of Copper Slags ...

2012-12-1 · 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 CaF2, CaO

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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

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Iron and copper recovery from copper slags through ...

2021-9-17 · To recover metal from copper slags, a new process involving two steps of oxidative desulfurization followed by smelting reduction was proposed in which one hazardous waste (waste cathode carbon) was used to treat another (copper slags). The waste cathode carbon is used not only as a reducing agent but also as a fluxing agent to decrease slag melting point.

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Study on smelting reduction ironmaking of copper slag ...

The results mdicate that the rate of copper slags smelting oxidation desulfurization depends on the matte mass transfer rate through the slag phase After

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Chinese Journal of Materials Research

LI Lei, HU Jianhang, WANG Hua, Study on smelting oxidation desulfurization of copper slags, Journal of Iron and Steel research, international, 19(12), 14(2012) 16 N. V. Manukyan, V. H. Martirosyan, Investigation of the chlorination mechanism of metal oxides by chlorine, Journal of Materials Processing Technology, 142(1), 145(2003)

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Materials | Free Full-Text | Influence of Desulfurization ...

2020-5-25 · Li et al. studied the process the smelting oxidation-reduction process of copper slags with air blowing. And results show that the sulfur content can be reduced from 0.52 wt.% to less than 0.01 wt.% with this method.

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METALLURGICAL USES FLUXES FOR METALLURGY

2016-3-4 · In copper smelting, an acid slag practice is used, and silica is added for repair of refractories in some parts of the smelting furnaces (Anderson, 1961, Fowler, 196 1). The slag formed in one operation can also serve as a flux in another. Slags formed in refining operations are often recycled to

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Extractive Metallurgy of Copper

2021-2-27 · Cu-in-Slag Limitation of Direct-to-Copper Smelting 187 10.10. Direct-to-Copper Impurities 187 10.11. Summary 188 References 189 Suggested Reading 189 11. Copper Loss in Slag 191 11.1. Copper in Slags 191 11.2. Decreasing Copper in Slag I: Minimizing Slag Generation 193 11.3. Decreasing Copper in Slag II: Minimizing Copper ... Oxidation of SO2 ...

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Materials | Free Full-Text | Influence of Desulfurization ...

2020-5-25 · Li et al. studied the process the smelting oxidation-reduction process of copper slags with air blowing. And results show that the sulfur content can be reduced from 0.52 wt.% to less than 0.01 wt.% with this method.

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(PDF) Looping Sulfide Oxidation ™ Process for Anode

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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METALLURGICAL USES FLUXES FOR METALLURGY

2016-3-4 · In copper smelting, an acid slag practice is used, and silica is added for repair of refractories in some parts of the smelting furnaces (Anderson, 1961, Fowler, 196 1). The slag formed in one operation can also serve as a flux in another. Slags formed in refining operations are often recycled to

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Alternative Reduction of Copper Matte in Reduction

continuous development of copper smelting technology, the smelting intensity and matte grade increasing, matte in cop-per slag also constantly improved, and copper in slag of rich oxygen bottom converter was up to 3–4%. 3) All copper slags contained a considerable amount of Cu (0.42–4.6%) and Fe

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THE INFLUENCE OF THE SILICATE SLAG COMPOSITION

2009-12-10 · During pyrometallurgical copper extraction, smelting is the subsequent operation to the oxidation roasting of the concentrates. In modern pyrometallurgical processes for copper extraction, both operations are facilitated in the same unit, resulting with development of the two main phases: silicate slag and the copper matte.

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Advances in Molten Slags, Fluxes, and Salts | Wiley Online ...

Production of Cobalt and Copper Alloys from Copper Slags Via Reduction Smelting in DC ARC Furnace (Pages: 645-656) ... Selective Precipitation of Magnetite in Copper Slag by Controlled Molten Oxidation (Pages: 687-694) ... Effects of Various Slag Systems on Metal/Slag Separation of CCA and Slag Composition on Desulfurization and ...

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Extractive Metallurgy of Copper

2021-2-27 · Cu-in-Slag Limitation of Direct-to-Copper Smelting 187 10.10. Direct-to-Copper Impurities 187 10.11. Summary 188 References 189 Suggested Reading 189 11. Copper Loss in Slag 191 11.1. Copper in Slags 191 11.2. Decreasing Copper in Slag I: Minimizing Slag Generation 193 11.3. Decreasing Copper in Slag II: Minimizing Copper ... Oxidation of SO2 ...

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PHYSICOCHEMICAL CHARACTERIZATION OF COPPER

2013-7-23 · Copper slags are usually considered a waste and characterized only by the final copper content. Large and increasing quantities are being produced and disposed of by stockpiling near the metallurgical plants. This paper stresses the importance of physico-chemical characterization when considering uses for slags and the possibility of recovering the

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Slag, Metallurgical | Article about Slag, Metallurgical by ...

Slags are formed from waste rock of ores (or ore materials), fluxes, combustion ash, oxidation products of processed materials, and the lining of smelting units. In steel smelting, slags are sometimes prepared in special furnaces (synthetic slags) and then used to process steel upon its removal from the furnace or converter to the ladle.

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Alternative Reduction of Copper Matte in Reduction

continuous development of copper smelting technology, the smelting intensity and matte grade increasing, matte in cop-per slag also constantly improved, and copper in slag of rich oxygen bottom converter was up to 3–4%. 3) All copper slags contained a considerable amount of Cu (0.42–4.6%) and Fe

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Extractive Metallurgy of Copper

2021-2-27 · Cu-in-Slag Limitation of Direct-to-Copper Smelting 187 10.10. Direct-to-Copper Impurities 187 10.11. Summary 188 References 189 Suggested Reading 189 11. Copper Loss in Slag 191 11.1. Copper in Slags 191 11.2. Decreasing Copper in Slag I: Minimizing Slag Generation 193 11.3. Decreasing Copper in Slag II: Minimizing Copper ... Oxidation of SO2 ...

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THE MAIN REASONS FOR INCREASED COPPER LOSSES

Technological calculations for the smelting of raw materials with a content in the charge: copper from 4 to 16 %, sulfur – 31 %, and silica – 15 %, when using a sili-cate flux containing 70 % SiO 2, showed that with a de-crease in the content of copper in the charge, its losses increase, as the volume of the resulting slags increases,

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Study on Recovering Iron from Smelting Slag by ...

In order to recover the iron in copper smelting slag quenched with water in smelters, carbothermic reduction was adopted to reduce the iron oxide existing in different phase such as fayalite,vitreous and magnetite in the slag to metal iron. In the optimum conditions, it was demonstrated that the metallization efficiency of iron could reach more than 86.1%.

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Advances in Molten Slags, Fluxes, and Salts | Wiley Online ...

Production of Cobalt and Copper Alloys from Copper Slags Via Reduction Smelting in DC ARC Furnace (Pages: 645-656) ... Selective Precipitation of Magnetite in Copper Slag by Controlled Molten Oxidation (Pages: 687-694) ... Effects of Various Slag Systems on Metal/Slag Separation of CCA and Slag Composition on Desulfurization and ...

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CONVERTING USING ISASMELTTM TECHNOLOGY

2017-12-21 · process. Complex lead/copper materials, containing valuable minor elements are treated in the ISASMELTTM furnace in a two step smelting and converting process. The smelting stage involves the oxidation of the feed to form a copper matte and a smelting slag by injection of oxygen enriched air through the lance. The silica-based

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Holland, Keiran; Eriç, R. Hürman; Taskinen, Pekka ...

where the oxidation degree of iron or the Zmagnetite concentration [ of the forming slag largely depends on the matte grade produced, and silica concentration of the slag (Mackey 1982). Typically, silica concentration in the industrial copper smelting slags is

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Laboratory Extraction of Copper from Chalcocite by ...

2019-6-23 · 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

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个人简介: - kmust.edu.cn

2015-5-18 · ,HU Jian-hang,WANG Hua, Study on Smelting Oxidation Desulfurization of Copper Slags, Journal of Iron and Steel research, international, 19(12),pp14-20, 2012 (SCI检

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Method of processing sulphide copper- and/or sulphide ...

Silicate slags obtained at present during pyrometallurgical smelting of copper contain copper and other metals in an amount of about 0.5% by weight of copper, which significantly surpasses the minimum (0.1-0.15% by weight of copper) obtainable with the method of the invention.

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