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metallurgy slag recover metal

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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.

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  • Slag - Wikipedia

    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.

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  • Fayalite Based Slags: Metal Recovery and Utilization

    microstructure of the slag. This paper reviews existing and novel routes for metal recovery and fayalite slag utilization. Keywords: slags, fayalite, microstructure, non-ferrous metals recovery, utilization, leaching Abstract In order to achieve full valorization of the slag, the combination of the two schemes is worthwhile to be considered.

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  • Feasibility of recovering metals from associated slags

    †Panzhihua Iron and Steel Company, Panzhihua City, China After smelting, the associated mineral ore accompanying Valuable Metal Compounds (VMC), such as titania and borate in BF., most of the VMC were separated from the metal into the molten slag that is an associated slags. Based on several case studies in laboratories and in a practice in a

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  • Copper Recovery Services | Cal-Chem Metals

    Cal-Chem Metals works with Clients across North America on copper recovery projects. These copper reclamation projects include copper slag recovery, copper mud recovery and rod mill scale/filter paper recovery.

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  • The recovery of non-ferrous metals from secondary copper ...

    The use of carbothermic reduction as a method of recovering copper and other non-ferrous metals from smelter discard slags has been examined. Although several pilotscale tests (referred elsewhere) showed that the recovery of copper into a base metal can exceed 70%, even for a slag originally ...

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  • US4588436A - Method of recovering metals from liquid slag ...

    Recovery of oxide or silicate-bound metals from liquid slag, in metallic or sulphidic form is carried out by reduction with carbonaceous reducing agent, the thermal energy required to maintain the temperature and perform the reduction and sulphidization being provided by blowing gas preheated in a plasma generator below the surface of the slag bath.

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  • Recovery of cobalt from slag in a DC arc furnace at ...

    Other conventional recovery techniques, such as slow cooling of the slag, followed by milling and flotation, are also inappropriate for the recovery of oxidized metals dissolved in slag. Conditions need to be sufficiently reducing to recover a significant fraction of the cobalt present.

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  • Electronic Scrap Precious Metals Recovery: Gold, Silver ...

    Electronic scrap represents a significant source of secondary precious metals. Table 1 shows the consumption of precious metals by the electrical industry in 1969. Ultimately, most of this electronic equipment becomes obsolete or damaged and is scrapped. Some of the scrapped items may be salvaged and reused as electronic components.

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  • Steel slag recycling - Harsco Metals & Minerals

    The global leader in metal recovery from slag. Recovering metal from slag is our core business. Harsco's operating experience stretches back over 100 years, when we first starting offering a metal recovery service.

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  • About Atoll Metal Recovery, Dr. Peter Scott,uranium ...

    Metal from Slag. A need to recover the metal from slags was first identified by the South African metallurgical research institute, Mintek, in the 1970s, due to the rapid growth of …

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  • Commercial Recovery of Metals From Coal Fly Ash ...

    Therefore, in a recent study titled “Commercial Recovery of Metals from Coal Ash – Global Review”, Lucid Insight reviewed the opportunities and challenges for metal recovery from coal fly ash.

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  • Precious Metal Recovery from Anode Slime-Slag/Dross Recovery-

    Precious Metal Recovery from Anode Slime Anode slime is a byproduct from copper or lead electro-refining process. The copper/lead anode slime usually contain As, Sb, Bi and precious metals …

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  • An overview of recovery of metals from slags - DeepDyve

    An overview of recovery of metals from slags An overview of recovery of metals from slags Shen, Huiting; Forssberg, E 2003-01-01 00:00:00 Various slags are produced as by-products in metallurgical processes or as residues in incineration processes. According to the origins and the characteristics, the main slags can be classified into three categories, namely ferrous slag, non-ferrous slag and ...

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  • US6264039B1 - Method for precious metal recovery from slag ...

    TECHNICAL FIELD OF THE INVENTION. The present invention is directed to a method for extraction and recovery of precious metals. The present invention is more particularly directed to a stage crushing method for the extraction and recovery of precious metals from slag produced by a coal burning furnaces and boilers.

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  • Metals | Special Issue : Sustainable Utilization of Metals ...

    After stabilization, the residues are traditionally landfilled. This work investigates pyrometallurgical treatment of jarosite residue to convert the material into reusable clean slag and to recover the valuable metals within the residue. The pyrometallurgical treatment is divided into two functional steps.

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  • Metal recovery - Harsco Metals & Minerals

    For carbon steel slags: after screening of slag materials our magnetic separation process ensures the highest level of metal recovery. Through further crushing and screening, the scrap can be upgraded to high-Fe material for use as coolant scrap in the mill. The residual slag is sold as an aggregate.

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  • Management of copper pyrometallurgical slags: giving ...

    materials from copper slag. Recovery of copper, molybdenum, precious metals, silica and iron, that is the most abundant component of the slag, are the goals for this research. Metals, commercial compounds, alloys and different forms of iron oxides for steel industry are proposed products.

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  • Tin slag as an alternative source to recover refractory metals

    Tin smelters produce considerable amount of slags along with metallic tin. This slag can be turned in to a valuable by-product if the refractory metals like niobium, tantalum, zirconium and ...

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  • An overview of recovery of metals from slags - ScienceDirect

    They usually contain a quantity of valuable metals except for BF slag. Recovery of metals from the slags and uitilization of the slags not only can save metal resource, but also can protect the environment. (2) Ferrous slags mainly include iron slag, steel slag, alloy steel slag and ferroalloy slag.

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  • Steel Slag - Material Description - User Guidelines for ...

    Slag processors may handle a variety of materials such as steel slag, ladle slag, pit slag, and used refractory material to recover steel metallics. These materials must be source separated, and well-defined handling practices must be in place to avoid contamination of the steel slag aggregate.

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  • The recovery of platinum group metals from low- grade ...

    was also the highest, at 66%. SEM imaging of a slag sample revealed few or no metal prills entrained. The FeO content in the initial concentrate charge was then increased by adding Peirce-Smith converter slag in order to decrease the slag viscosity and further increase PGM recovery.

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  • metallurgy | Definition & History | Britannica.com

    Metallurgy, art and science of extracting metals from their ores and modifying the metals for use. Metallurgy customarily refers to commercial as opposed to laboratory methods. It also concerns the chemical, physical, and atomic properties and structures of metals and the principles whereby metals are combined to form alloys.

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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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  • Slag - Wikipedia

    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.

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  • RECOVERY OF METALS FROM WASTE INCINERATOR …

    • New technologies for the recovery of nonferrous metals • A sharp increase in metal prices As the title suggests, focus ison the extraction of metals from MWI-BA. Neither the potential recovery of g3ass and ceramics or other mineral matrix material from MWI-BA, nor the

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  • Separation of Metals from a Slag Using a Multi-cell Jig

    and its applications for recovery of metals from slag, especially ferroalloys. A commercial jig plant has been installed in South Africa to recover metal concentrate of 97% grade at 76% metal recovery from minus 1mm ferrochrome slag far exceeding conventional gravity methods. Introduction

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  • Slag Metallurgy and Metallurgical Waste Recycling ...

    The following papers being published under the topic of Slag Metallurgy and Metallurgical Waste Recycling embody the development of modern technologies for slag metallurgy and metallurgical waste recycling. The innovations reported are expected to be motivating for both process and physical metallurgy specialists.

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  • Slag Metals Sorting - Tomra

    Demand to recover these metals is therefore rising. Our dry sensor-based metal slag sorting system processes and separates high volumes of material efficiently. Sorting algorithms can be varied easily, to separate different types of slag and/or metal.

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  • Slag | metallurgy | Britannica.com

    Slag floats on the surface of the molten metal, protecting it from oxidation by the atmosphere and keeping it clean. Slag forms a coarse aggregate used in certain concretes; it is used as a road material and ballast and as a source of available phosphate fertilizer.

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