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Rotary slag recycling of precious metals

Jul 18, 2013 Recovery of cobalt, nickel, and copper from slags, using DC …. The most effective means for the recovery of metals …. Molten slag may be fed directly to the 5.6 MVA furnace from a pre-melting …. When treating furnace slag

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  • RECOVERY OF PRECIOUS METALS FROM ELECTRONIC SCRAP

    RECOVERY OF PRECIOUS METALS FROM ELECTRONIC SCRAP

    Jan 01, 1983 RECOVERY OF PRECIOUS METALS FROM ELECTRONIC SCRAP Donald P. Williams and Phil Drake Bear Paw Mining, Inc., Mojave, CA ABSTRACT Three methods are widely employed to reclaim gold from electronic scrap: 1) Chemical leaching, 2) Grinding and pulverizing, followed by gravity separation or leaching, and 3) Incineration and smelting

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  • Recycling of Metals - RWTH Aachen University

    Recycling of Metals - RWTH Aachen University

    recycling of iron scrap. For reasons of flexibility (high temperatures possible, mode of electrical operation, electrode positioning, etc.) the electric arc furnace is increasingly used for non-ferrous recycling purposes, few of which are listed below: l recycling of NiMH and Li/Co-batteries l recovery of precious metals from spent catalysts

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  • RECYCLING LEAD, BYPRODUCT METALS, SULFATE

    RECYCLING LEAD, BYPRODUCT METALS, SULFATE

    RECYCLING LEAD, BYPRODUCT METALS, SULFATE, AND POLYPROPYLENE IN SECONDARY PB-SMELTERS ... PRECIOUS METALS Lead alloys Lead PbZnAg crusts PRECIOUS METALS PRODUCTION Source: Kunicky – PbZn 2000. ... ROTARY FURNACE Discard Slag 8.4% 4.4% Discard Slag 7.8% 0.2% ISASMELT

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  • Copper Recycling - ScienceDirect

    Copper Recycling - ScienceDirect

    Jan 01, 2014 Slag from copper-smelting operations usually contain between 1.5% and 8% copper depending on process used. After internal recycling, reduction and/or settling, the slag contains between 0.7% and 2% Cu and is often discarded. It is estimated that about 2.2 t of slag is generated per ton of copper produced

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  • Slag and Dross Reclamation | General Kinematics

    Slag and Dross Reclamation | General Kinematics

    Convert waste into usable product. Slag and dross is a by-product of metalcasting that in many cases is discarded. With General Kinematics, you can now turn that waste stream into valuable, reusable product. Quench and Cool. GK’s vibratory quenching conveyors are the original and still the most rugged machine for quenching slag, dross, and castings, and other hot metal and metal by-products

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  • Hydrometallurgy, Pyrometallurgy, and Extraction and

    Hydrometallurgy, Pyrometallurgy, and Extraction and

    Expert has worked at numerous slagging hazardous waste incineration operations, generally on problems involving either eliminating or enhancing slag formation, vitrification of sludge or metal-rich residues, and processing flue dust. He is expert in controlling slag deposition in

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  • environmental engineering and management An

    environmental engineering and management An

    zinc report to the slag and the off-gas due to high volatility. The tapped copper matte, containing precious metals is transferred to the converters, where, after blowing with air, blister copper is produced, refi ned in an anode furnace and cast into anodes with a purity of 99,1%. The balance of 0,9% is rich in precious metals, along with

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  • A Review on Recycling and Reutilization of Blast Furnace

    A Review on Recycling and Reutilization of Blast Furnace

    Jun 03, 2021 A large amount of dust is formed as one of the primary by-products during the blast furnace ironmaking process. Besides iron and carbon, it contains a variety of valuable metals such as zinc, lead, and indium widely applied in many industry fields. However, it is difficult to recycle and reutilize blast furnace dust (BFD) due to complex composition, fine particle size, and strong hydrophobic

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  • Smelting Technologies for E-scrap in Japan

    Smelting Technologies for E-scrap in Japan

    ・E-scrap, especially PCB recycling, is vital to maintain a supply chain of non-ferrous metals, including precious metal and minor rare metals. Non-ferrous smelters play an important role of it. ・PCB recycling requires the treatment of resin with brominated flame retardants from an environmental point of view. Insufficient research exist

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  • WO1990013678A1 - Process and apparatus for the recovery

    WO1990013678A1 - Process and apparatus for the recovery

    The invention concerns methods and an apparatus for extracting precious metals and harmful matter from materials such as slag. The methods include freezing the pre-sized material; exposing it to ultraviolet and infrared radiation; roasting it in the presence of sodium borohydride, a metal salt, water and a combustible nitrogen material; and heating a mixture of the material and a fluxing agent

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  • Batchwise working-up recycling materials in a rotatable

    Batchwise working-up recycling materials in a rotatable

    A process for batchwise working-up valuable metals containing recycling materials having a content of organic constituents so high that its use as smelting materials in conventional metal smelting processes is not suitably or even possible. The material is charged to a tiltable reactor rotatable along its own longitudinal axis having a common opening for charging and emptying

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  • On the Kinetic Behavior of Recycling Precious Metals (Au

    On the Kinetic Behavior of Recycling Precious Metals (Au

    Jun 09, 2021 Abstract The recycling and recovery of precious metals from secondary materials, such as waste-printed circuit boards, are an important area of circular economy research due to the limited existing resources and increasing amount of e-waste produced by the rapid development of technology. In this study, the kinetic behavior of precious metals Au, Ag, Pt, and Pd between copper matte and

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  • AU2012250290B1 - Process for recovering valuable metals

    AU2012250290B1 - Process for recovering valuable metals

    The present invention provides a process for recovering valuable metals from precious metal smelting slag, comprising: smelting the precious metal smelting slag and a flux in a top-blown rotary

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  • Top Blown Rotary Converter (TBRC) Smelting-Metal Recycling

    Top Blown Rotary Converter (TBRC) Smelting-Metal Recycling

    Top Blown Rotary Converter (TBRC) Smelting. TBRC is an advanced smelting equipment for treating anode slime, WEEE, non-ferrous metal smelting slag and setting slurry to recover gold, silver, other precious metal and rare metal. It can also treat copper concentrate and secondary material like scrap copper, scrape lead, lead slag, lead dust, etc. The furnace is characterized by short process, high

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