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  • ISASMELT - Wikipedia

    The installation of the ISASMELT furnace increased the overall copper recovery in the plant by reducing losses to slag, reduced the number of furnaces in operation, decreased the waste gas volume, and decreased energy consumption by more than 50%. The production capacity exceeds the original design by 40%. References

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  • 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.

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  • US3666440A - Method of recovering copper from slag ...

    copper is recovered from copper-containing slag by putting the matte and slag in a molten state together in a slag treating furnace at a volume ration of more than 1:5, the melts in the furnace being maintained under agitation so that the slag and matte are in intimate contact so as to efficiently transfer copper from the slag to the matte.

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  • Tilting Rotary Furnace - Melting Solutions Limited

    The dry slag remains in the furnace-no wasted time opening tap holes. 4. The furnace is rotated at high speed for 5 minutes in each direction-using burner if required. 5. More aluminium is poured out of the furnace. Repeat steps 4 and 5 until no further aluminum is obtained. 6. The furnace is tilted and rotated simultaneously to tip out the dry ...

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  • Enhancing the flotation recovery of copper minerals in ...

    This suggests that the reverberatory furnace is efficient in its recovery of copper and other values to the matte phase as it apparently produces a much cleaner slag. Figure 3 (a) shows a diopside grain (2) with locked and partially exposed bornite inclusions (3 and 1 respectively) while Figure 3 (b) shows a diopside grain with inclusions of ...

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  • Recovery of Lead from Lead Blast Furnace Slags

    For lead blast furnace slags, it is therefore appropriate to recover the lead and zinc in separate solutions to subsequently permit effective recovery of both metals. If the metal values were not important then a bulk leach of the two metals or a simple lead leach would be possible to render the slags non-hazardous.

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  • Optimization of the flotation of copper smelter slags from ...

    All these three furnaces produce fayalite slag as a byproduct. The slags contain copper with the content ranging between 0.8 to 5% copper. The slags cannot be discarded due to the high content of copper and hence they are sent to a milling and flotation plant (Slag Mill Plant) for liberation and recovery of copper.

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  • Recovery of Copper from the Slag of Khatoonabad Flash ...

    Copper loss in the slag of Khatoonabad flash smelting furnace is estimated to be about 1-3 %. At present, the electric slag cleaning furnace is used for the recovery of copper from slag. However, due to low recovery efficiency of electric furnace along with high consumption of electrical energy and water, selection of a method to enable minimum energy consumption and maximum recovery of copper ...

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  • Recovery of Copper from the Slag of Khatoonabad Flash ...

    Copper loss in the slag of Khatoonabad flash smelting furnace is estimated to be about 1–3 %. At present, the electric slag cleaning furnace is used for the recovery of copper from slag. However, due to low recovery efficiency of electric furnace along with high consumption of electrical energy and water, selection of a method to enable minimum energy consumption and maximum recovery of ...

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  • Recovery of base metals and PGMs in a DC alloy-smelting ...

    Application to Co recovery by slag cleaning Mineralogical studies have shown that cobalt is present as CoO in copper reverberatory furnace slag. Copper in the slag is mainly attributed to the presence of copper-rich sulphides. The cobalt oxide, and, to a lesser extent, the copper …

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  • Efficient Recovery of Copper and Cobalt from the Matte ...

    Aug 24, 2018· During ISA copper smelting process, ISASMELT furnace discharges a large amount of matte and slag mixture and the separation of them has an important influence on the recovery of valuable metals. This paper presented a reduction-sulfurization sedimentation process for recovering copper and cobalt from the matte–slag mixture of ISA furnace.

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  • Exergy and cost analyses of waste heat recovery from ...

    The heat recovered from a cement slag blast furnace is treated as a source of heat and used to generate hydrogen and electricity. Fig. 1 illustrates the system and shows the blast furnace waste heat from cement slag. The cement slag exits at 1,500 °C from the blast furnace [].The entire amount of heat cannot be recovered from cement slag because of the solidification of slag.

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  • Aluminum Dross Furnace Salt Slags Processing

    The salt slag generated ranges up to 35 pct of the melt charge in rotary furnaces. Higher quality scrap is melted in reverberatory furnaces, using a flux consisting of equal parts sodium chloride and potassium chloride with 2 to 5 pct cryolite. Dross from this type of furnace ranges up to 10 pct of the melt charge.

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  • Copper Smelting Furnace

    The early development of the reverberatory furnace for smelting copper ores was the work of the Welsh smelters, particularly those of Swansea. The first record of a reverberatory furnace is made by Jars, who states that copper-smelting was effected in reverberatory furnaces at Middleton-Tyas, in Yorkshire, England. The first patent, of any importance, for improvements in reverberatory furnaces ...

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  • PHYSICOCHEMICAL CHARACTERIZATION OF COPPER SLAG …

    recovery. The copper analysis remaining after conventional slag cleaning can be close to 1% while molybdenum is sometime found in a range of 0.2 to 0.4%, depending on kind of mineral treated and technology used. These concentrations are higher in some cases than the analysis of the original ore and thus may warrant recovery by retreatment.

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  • Control of Slag and Insoluble Buildup in Ladles, Melting ...

    melting furnaces, pressure pour furnaces and magnesium treatment vessels with minimal to no adverse effects on refractory linings. Slag Formation: The formation of slag in the melting of ferrous metals in the foundry is inevitable. The composition of slag varies with the type of melting process used and the type of iron or steel being melted.

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  • Reductive-sulfurizing smelting treatment of smelter slag ...

    reduction of metallic iron was evident when copper and cobalt levels in the slag fell below a lower value [18 ]. This diluted the copper and cobalt levels in the matte and changed the properties of slag and eventually reduced the recovery of copper and cobalt. Y. Li et al. / JMM 54 (1) B (2018) 73 - 79 75

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  • Enhancing the flotation recovery of copper minerals in ...

    submerged lance, copper converter and reverberatory furnaces, in order to produce mattes and fayalitic slags. The copper content of the slags range between 0.8 to 5 wt. % and this is considered too high for disposal to the environment. Currently, the slags are sent to a milling and flotation plant for liberation and recovery of residual copper ...

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  • Recovery Of Copper From Reverberatory Furnace Slag By ...

    copper slag recycling plants ... metal oxides and produces impure copper and an iron rich slag that. at a ... from reverberatory furnace slag by flotation May 12, 2013 · A process for the recovery of iron from copper slag which ... The 20 Mt reverberatory furnace slag dump at Nkana in …

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  • Recovery of iron from copper flash smelting slags: Mineral ...

    Copper slag contains iron in the range of 42–45%, which can be recovered and recycled along with the contained copper to obtain an iron–copper alloy and a final slag rich in oxides. Therefore, the present work shows the experimental results of the reduction of a flash smelting slag using coke as reductant up to 150% of the stoichiometric ...

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  • 12.3 Primary Copper Smelting

    Slag produced by flash furnace operations contains significantly higher amounts of copper than reverberatory or electric furnaces. Flash furnace slag is treated in a slag cleaning furnace with coke or iron sulfide. Because copper has a higher affinity for sulfur than oxygen, the copper in the slag (as copper oxide) is converted to copper sulfide.

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

    Copper Cobalt Nickel and Zinc Recovery conference, Victoria Falls, Zimbabwe, 16-18 July 2001 . Abstract. The 20 Mt reverberatory furnace slag dump at Nkana in Zambia contains a substantial quantity of cobalt. A 40 MW DC arc furnace has been built at Chambishi for the purpose of . recovering cobalt from the slag.

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  • Zinc Leaching Residue Pb, Ag & In Recovery-Zinc-

    Lead and valuable metal is reduced into metallic status and are enriched into lead bullion or copper matte for further recovery. Zinc reports into slag and then is charged into the secondary side-blowing furnace for fuming. In practice, the overall silver recovery rate > 90%, the slag from the first furnace contains lead <2%, silver <10ppm. The ...

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  • Recovery of Copper from Slow Cooled Ausmelt Furnace Slag ...

    Ausmelt furnace slag contains about 0.9% Cu (mass %). With increasing the amount of Ausmelt furnace slag, the recovery of copper from it will produce an enormous economic yield. The recovery of copper by floatation from slow cooled Ausmelt furnace slag was studied in this paper. The phases and composition of the slow cooled slag were analyzed.

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