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  • Copper Slag an overview ScienceDirect Topics

    The chemical composition of copper slag varies with the type of furnace. The typical composition of smelting slags is Fe (as FeO, Fe 3 O 4) 30–40%; SiO 2 35–40%; Al 2 O 3 up to 10%; and CaO up to 10%. The density of copper slag varies between 3.16 and 3.87 g/cm 3

  • Copper Smelting Slag Cleaning in an Electric Furnace by

    16/10/2020· A series of copper slag cleaning experiments with different WCO dosages along with various temperatures and settling durations was systematically carried out in a laboratory-scale electric furnace. The distribution of matte particles in each slag layer after cleaning was investigated in detail, which indicates that the copper content in the upper slag layer can be reduced to 0.56 wt pct

  • SHAFT SLAG FURNACE (SSF) WWW.COPPER-LINES.COM

    Shaft furnace is high efficiency equipment with high heat-availability factor of fuel consumption due to material and gases opposite flow within the furnace. The main purpose of slag processing is extraction copper out of copper, brass and bronze slag fractions of 30 100 mm with copper content not less than 5 %, receiving molten metal and pouring it into moulds or a ladle.

  • Minimization of Copper Losses in Copper Smelting Slag

    21/09/2012· All experiments were performed at 1200°C. From thermodynamic considerations, from industrial experience, and from the results obtained in this study, the minimum soluble copper content in the electric furnace slag is expected to be near 0.55 wt.% Cu. This level does not account for a portion of the copper present as mechanically entrained matte/metal droplets. Taking this into account, the current authors believe an overall copper level in discard slag between 0.7 wt.%

  • THE ELECTRICAL CHARACTERISTICS OF COPPER SLAGS IN A 270

    electric arc furnace were used to determine the electrical characteristic of molten ancient copper slags. The spe-cific conductivity of the slag was estimated by using furnace geometric factor given in the literature as an empiri-cal formula and by using furnace resistance measured during smelting of the copper slag with or without different

  • Recover Copper from Reverberatory Furnace Slag

    22/07/2019· The presence of copper in reverberatory furnace slag is accepted as being due to two factors: chemically dissolved copper and mechanically entrapped matte. Beyond this fact, however, opinions on the nature of the materials involved begin to diverge. A sample of flotation recleaner concentrate from the pilot plant assaying 16.9% Cu was used for microprobe analysis of the copper

  • SHAFT SLAG FURNACE (SSF) WWW.COPPER-LINES.COM

    Characteristics of raw material The raw material for the shaft furnace is the slag obtained from the fire refining of copper-containing scrap, with a copper content of 5% or more. Melting of the stock is carried out by burning of coke.

  • THE ELECTRICAL CHARACTERISTICS OF COPPER SLAGS IN A 270

    electric arc furnace were used to determine the electrical characteristic of molten ancient copper slags. The spe-cific conductivity of the slag was estimated by using furnace geometric factor given in the literature as an empiri-cal formula and by using furnace resistance measured during smelting of the copper slag with or without different

  • Recover Copper from Reverberatory Furnace Slag

    22/07/2019· The presence of copper in reverberatory furnace slag is accepted as being due to two factors: chemically dissolved copper and mechanically entrapped matte. Beyond this fact, however, opinions on the nature of the materials involved begin to diverge. A sample of flotation recleaner concentrate from the pilot plant assaying 16.9% Cu was used for microprobe analysis of the copper

  • Copper Loss in Slag ResearchGate

    This chapter discusses the nature of copper in smelting and converting slags. It also describes strategies for minimizing the amount of copper lost from their disposal. Cu smelters produce two...

  • RECOVERY OF COPPER FROM SMELTING SLAG BY SULPHATION

    Pyrometallurgical production of copper generates two slags: smelting furnace slag and converter slag which contain 0.5-2% Cu and 2-8% Cu, respectively. The following three methods are generally utilized for recovering the copper from these slags on an industrial scale: (i) recycling of the converter slag to the smelting furnace, (ii) cleaning of smelting and/or converter slags in electric

  • A Study on Reduction of Copper Smelting Slag by

    Copper smelting slag usually contains about 1% copper and 40% iron depending on the initial ore quality and furnace type. Significant amounts of SiO 2, FeO, CaO, Al 2 O 3 and minor amounts of other elements (e.g., zinc, titanium, and lead) are also associated with copper slag [ 9 ].

  • THE SUBMERGED ARC FURNACE (SAF) STATE OF ART IN METAL

    mostly as ions (e.g. for copper slag as Cu + ions) or as entrained droplets of matte. The dissolved metals is associated eithe r with O. X- ions (i.e. Cu. 2. O) or with S. X-ions (e.g. Cu. 2. S). Electric furnace slag cleaning uses coke as a reductant. So, coke bed is floating on the slag surface and reacting with oxides. At the initial moment of the contact of carbon

  • OUTOTEC FLASH SMELTING TECHNOLOGY

    Outotec Slag Cleaning Slag cleaning at copper and nickel smelters is typically done using an electric furnace process. The design of Outotec slag cleaning furnaces is based on our extensive experience with different slag compositions and under-standing of how to optimize the process for maximum recovery. Our energy efficient furnace design incorporates

  • Flash smelting Wikipedia

    The reacted particles fall into a bath at the bottom of the furnace, where the iron oxides react with fluxes, such as silica and limestone, to form a slag. In most cases, the slag can be discarded, perhaps after some cleaning, and the matte is further treated in converters to produce blister copper.

  • Management of copper pyrometallurgical slags: giving

    higher absorption capacity than air-cooled copper slag. The granulated copper slag is made up of regularly shaped angular particles, mostly between 4.75 and 0.075 mm3. Slags produced during pyrometallurgical processes have been traditionally considered as a waste3. In the case of copper extraction processes, it has been estimated that for every ton/year of copper produced, 2.2 ton/year of