• Processing of copper converter slag for metal reclamation ...

    Processing of copper converter slag for metal reclamation. Part I: Extraction and recovery of copper and cobalt. Deng T(1), Ling Y. Author information: (1)Institute of Process Engineering, Chinese Academy of Sciences, Beijing, PR China. [email protected] Clean processing of copper converter slag to reclaim cobalt and copper could be a challenge.

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  • Slag recycling

    The 2015 recovery quantities for blast furnace slag are shown in Fig. 15. Granulated slag makes up 86 %, of which almost the entire amount is used in the cement industry. The fields of application of the air-cooled slag are mainly in road construction and other uses in the construction industry. 4 Trends in slag …

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  • (PDF) LEACHING OF HEAVY METALS FROM THE STEEL SLAG …

    I. INTRODUCTIONSteel slag is a byproduct of the steel industry and has now found several applications [1]. Leaching of heavy metals from the steel slag would have the negative impact on the environment. Leaching of metals from steel slag in a systematic manner would lead to the recovery of the metals.

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  • TOWARDS RED MUD VALORISATION: EAF SMELTING …

    was reported. The metal is suitable as a feed material in secondary steel making for low Si contents and in the foundry for grey cast iron for higher Si contents. Table 2: Composition of the produced metal Fe C Si Ti Cr V Ni P S Metal - silica flux 91.8 5.0 1.7 0.3 0.5 0.2 0.3 0.1 0.03 Recovery (metal) Very high - …

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  • Report on the Environmental Benefits of Recycling

    Undoubtedly, sections of industry may claim greater savings based on their own databases, but there is a danger in over-stressing industry data which have not been independently verified and which in any case will differ from country to country depending upon the sophistication of both the energy supply and the metal production plant.

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  • strengthening resource security of valuable metals for ...

    policy makers, industry and academia is essential. ... Steel slag 49% 0.8%(annual production) Steel slag 638% 11%(legacy waste) Fly ash 11% ... waste streams including the recovery of metals from wastes resulting from steel and aluminium production, and metal mines. These industries

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  • RECOVERY OF VANADIUM AND NICKEL FROM PETROLEUM …

    cent nickel, with vanadium recovery of more than 89 per cent, and a disposable slag based on USA EPA safe disposal criteria. Several parameters were studied in order to optimise the smelting stage including operating temperature, aluminium addition, the use of ferrosilicon as the reducing agent and lime (flux) addition. The results of the

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  • Slag recycling

    The 2015 recovery quantities for blast furnace slag are shown in Fig. 15. Granulated slag makes up 86 %, of which almost the entire amount is used in the cement industry. The fields of application of the air-cooled slag are mainly in road construction and other uses in the construction industry. 4 Trends in slag recycling

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  • Waste recycling: Solutions for sorting waste to recover ...

    Efficient recovery of recyclable materials from various waste streams like commercial & industrial or even domestic collections is one of the greatest challenges in the recycling industry for ensuring a sustainable circular economy. ... mineral fractions and elements of iron and non-ferrous metals.

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  • Recovery of platinum group metals from spent catalysts: A ...

     · Abstract. This paper provides an overview of the various processes used in the recovery of platinum group metals (PGMs) from spent catalysts. PGM recovery is interesting due to their vast industrial applications and high market prices. From the use of renewable resources and environmental protection viewpoints, recycling of PGMs receives wide ...

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  • SLAG

    SLAG - IRON AND STEEL THM : Tonne Hot Metal Blast Furnace Slag In the blast furnace, the slag floating over molten pig iron (hot metal) is flushed out in slag pot and then sent to slag granulating plant or to cooling pits. Depending upon the cooling process, three types of slags are generated, namely, air-cooled slag, granulated slag and ...

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  • Slag

    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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  • Latest results of the slag cleaning ...

    Semi-pilot-scale tests of continuous slag cleaning showed promising results of very fast slag reduction and effective metal recovery. Additionally, pilot tests (1–2 tph of slag charge) had been carried out at the Anglo American plant in Chagres, Chile and demonstrated the functioning of the process principles.

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  • Development of Heat Recovery System from Steelmaking Slag

    slag is being formed rises by approximately 30°C. Since this is within the design range of 70°C or less, the designed cooling capacity can be obtained. 3. Development of Slag Heat Recovery Process 3.1 Design of Slag Heat Recovery Pilot Plant The slag heat recovery pilot plant which was built in this development is a counterflow packed bed ...

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  • Bioleaching and recovery of metals from final slag waste ...

    Solid waste from the copper smelting industry may be harmful if disposed of in the environment, but it may be a valuable resource if metals can be recovered. The purpose of this study was to evaluate the acid bioleaching of metals from a sample of final smelter slag and the recovery of metals …

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  • Bioleaching and recovery of metals from final slag waste ...

     · Research highlights Bioleaching and recovery of metals from final smelter slag was studied. Metal yields after 29 days of leaching were 41% Fe, 62% Cu, 35% Zn and 44% Ni. Metals were subsequently precipitated using biogenic sulfide. Over 98% of Cu precipitated at pH ⩾ 2.8 and over 99% of Zn precipitated at pH ⩾ 3.9. The precipitation of Ni and Fe required higher pH values and was less ...

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  • Reduction of steel‐making slags for recovery of valuable ...

     · The slag products include a metallurgical powder for desulfurization of steel, hydraulic binder and slag stones for construction applications. The metals obtained are rich in Fe, Mn, V and Cr depending on the treated slag and residues. The environmental compatibility and mechanical properties of the slags have been improved after slag reduction.

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  • An overview of recovery of metals from slags

    On this basis, a review of a number of methods for recovery of metals from the slags was made. It can be seen that a large amount of slags is produced each year. They usually contain a quantity of valuable metals except for blast furnace slag and they are actually a secondary resource of metals.

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  • An overview of recovery of metals from slags

     · Methods for metal recovery from copper slagA number of methods for metal recovery from copper slag were reported. Basically, they can be classified into three categories, namely flotation, leaching and roasting. Barnes et al. (1993) described an industrial flotation process of the copper slag at Mount Isa Mines Limited. The slag is ground to 80 ...

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  • Recovery of metals and nonmetals from electronic waste by ...

    The recovery of metals from e-waste material after physical separation through pyrometallurgical, hydrometallurgical or biohydrometallurgical routes is also discussed along with purification and refining. Suitable PCB recycling flowsheets for industrial applications are also given. It seems that hydrometallurgical route will be a key player in ...

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  • CO 2 abatement in the iron and steel industry

    1 Introduction CO 2 abatement in the iron and steel industry 5 Steel is basically an alloy consisting of iron, 0.02 to 2 wt% carbon, and small amounts of alloying elements, such as manganese, molybdenum, chromium or nickel.

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  • Steel industry co-products

    As slag is lighter than the liquid metal, it floats and can be easily removed. There are three main types of marketed ironmaking or BF slag, categorised by how they are cooled – air-cooled, granulated, and pelletised (or expanded). Over the past 20 years, the steel industry''s recovery rate of co-products has increased significantly.

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  • Environmental Guidelines for Copper Smelting

    discarded slag from the smelter. Discard slag may contain 0.5-0.7% copper and is frequently used as construction material or for sandblasting. Leaching processes produce residues while effluent treatment results in sludges which can be sent for metals recovery. The smelting process typically produces less

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  • BIOHYDROMETALLURGICAL METHODS FOR METALS …

    J. WILLNER et al.: BIOHYDROMETALLURGICAL METHODS FOR METALS RECOVERY FROM WASTE MATERIALS metals from red mud was conducted by using A. niger [26]. During the bioleaching process, lasting 40 days, over 80 % of Pb and Zn, 67 % of Cu, 50 % of Ni, 44 % of As, 31 % of Ba, 26 % of Cr and about 11 % of Fe and

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  • The recovery of ferrochrome from slag at Zimasco ...

     · The dump at Zimasco, containing 4.5 million tons of slag justified that the construction of a metal from slag recovery plant to treat about 170 t/h was appropriate if a suitable process could be developed. The dump contained high carbon ferrochrome alloy (HCFC) valued at that stage at about 1500 million Zimbabwe Dollars.

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  • Steel Slag | Loesche

    Flowsheet. This dry process developed by Loesche for recovering metals from steel slag combines all the advantages of conventional processes: Efficient and cost-effective metal recovery in the coarse range. Virtually metal recovery down to the finest fractions range by means of optimised dry grinding, classification and sorting technology.

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  • Atoll Metal Recovery, metal recovery services ...

    Atoll Metal Recovery is a world leader in the provision of metal recovery services to metallurgical processors and mining companies. Since its formation, Atoll Metal Recovery has built 11 major metal-from-slag recovery plants in Southern Africa, capable of processing between 120 and 200 t/h of slag. It has also constructed a 100 t/h plant for ...

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  • Vanadium Recovery and LiB Recycling

    VANADIUM RECOVERY • Critical Metals aims to recover vanadium from steel slag and process it into high- ... • Right to purchase at least 2M dry metric tonnes of slag ... SMS is a global, leading partner for the metal industry, refer ...

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  • Ores, slag and ash

    normal to the metallurgical industry. 3.- Heading 26.20 applies only to : (a) Slag, ash and residues of a kind used in industry either for the extraction of metals or as a basis for the manufacture of chemical compounds of metals, excluding ash and residues from the incineration of …

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  • Economic and environmentally beneficial treatment of slags ...

    Blast furnace slag contains little metal, and recovery of metal (even iron) from it is usually not important. About 220–370 kg of slag is produced per ton of iron. Blast furnace slag was used as early as 1880 as a phosphatic fertilizer. Today, blast furnace and steel slag have found a

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  • Ecofriendly chemicals can actually improve mineral ...

     · It has also been tested for the recovery of copper from waste streams, including mineral tailings and waste slag from metal refineries. Researchers are …

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  • Recovery of Metal from Slag in the Ferroalloy Industry ...

    Recovery of Metal from Slag in the Ferroalloy Industry (English) Parker, J. A. C. / Loveday, G. K. / Guest, R. N. / Iron and Steel Society; Electric Furnace Division

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  • Solutions for metal recycling to recover valuable residues ...

    The reclamation of recoverable metals is of great importance - in political, environmental and economic terms. Both raw materials and valuable residues that are used in product design are growing increasingly complex. Today, therefore, flexible and forward-looking technologies are required in the materials processing industry.

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  • Recovery of Copper from Reverberatory Copper Slag and ...

    Copper Cobalt Africa, incorporating the 8th Southern African Base Metals Conference Livingstone, Zambia, 6–8 July 2015 Southern African Institute of Mining and Metallurgy 247 Recovery of Copper from Reverberatory Copper Slag and Production of a Leach Residue used as a Portland Cement Additive T. A. Muhlare and D. R. Groot

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  • RECOVERY OF VALUABLE BASE METALS FROM SECONDARY …

    design and operational benefits of the technology during this period has ensured that industry-leading technical recovery rates have been demonstrated for a wide range of precious metals (PM) and PGM at both a pilot and full commercial scale (Johnson, 2016). ... slag and metal fractions. This in turn maximises the value derived

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  • Recovery of Metals from Waste | Recycling Product News

     · At the Recycling Aktiv, Goudsmit Magnetics will present a complete demo recovery line for the recovery of ferrous and non-ferrous metals from ASR (AutomobileShredder Residue), metals, wood, construction and demolition waste, etc.During the trade fair the material to be separated will circulate over a mobile non-ferrous separator before passing under a permanent scrap drum magnet …

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  • Metal Recovery from Scrap and Waste | SpringerLink

     · The depletion of high grade ores and accumulation of huge quantities of metallic scrap and metallurgical wastes have generated significant interest in their processing. In this paper, both pyrometallurgical, as well as hydrometal-lurgical, methods for metal recovery from scrap and wastes (viz., slag, dusts, aqueous effluents, sludge and residues) are reviewed.

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  • EXTRACTION OF PRECIOUS METALS FROM E-WASTE

    The following table shows recovery of precious metals from ewaste as done by few investigators. Investigators Leaching agent Process conditions Recovered metals Quinet et al H2SO4, chloride, thiourea and cyanide leaching Leaching & metals recovery by cementation, precipitation, ion exchange and carbon adsorption Au, Ag, Pd and Cu

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  • Aluminium dross recycling

    Thermo-mechanical metal extraction. The mechanical process of recycling does not use any toxic chemicals previously used in the process of extracting the valuable aluminium in the dross.. Hot dross processing system whereby the majority of metal is recovered without chemically reducing the aluminium oxides. The dross is first crushed then separated into aluminium metal rich particles and ...

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  • Analysis of Induction Furnace Slag of Ferrous Foundry

    Total slag produced leads to waste heat recovery of 2070,000 million KJ, 5671x106 KJ per hour, converted into terms of oil; this rate is 5.671x x106 kg/hr. So that for energy conservation, the slag heat recovery is essential in Indian foundry sector. Thus there is large potential of energy conservation with slag …

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  • Metal recovery from incinerator slag Panizzolo recycling ...

     · discover more on: https://bit.ly/2QTbNjIWith Panizzolo refining plant the waste from incinerators are introduced in an End-of-Waste recycling cycle which ope...

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  • RECYCLING OF PLATINUM GROUP METALS FROM …

    slag interface lead to an increased recovery of the precious metals from the slag. The recovery of very small particles in particular is improved by this principle. Owing to their high melting points (e.g. rhodium: 1966°C), the PGMs are not always liquid during this process. Also in this case the collector metal droplets improve the recovery ...

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  • Possible Uses of Steelmaking Slag in Agriculture: An …

    Slag in Agriculture: An Overview Teresa Annunziata Branca and Valentina Colla Scuola Superiore Sant Anna - PERCRO - TeCIP Institute Italy 1. Introduction Slags are the main by-products generated during iron and crude steel production and the steel industry is …

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