dc arch furnace for pper revery from slags

2021-09-01T19:09:45+00:00
  • Recovery of cobalt, nickel, and copper from slags, using ...

    This technology is applicable to the recovery of nickel, cobalt, copper, and platinum group metals from furnace or converter slags emanating from copper or nickel smelters treating sulphide concentrates. Pilot-plant testwork at Mintek has demonstrated recoveries of 98% for nickel and over 80% for cobalt, at power levels of up to 600 kW.

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

    2018-4-15  The 20 Mt reverberatory furnace slag dump at Nkana in Zambiacontains a substantial quantity of cobalt. A 40 MW DC arc furnacehas been built at Chambishi for the purpose of recovering cobaltfrom the slag. The technology was jointly developed by Mintek andAnglovaal Mining Ltd (Avmin), and the furnace was designed byBateman Titaco.

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  • Recovery of Cobalt from Copper Smelter Slags ...

    Recovery of Cobalt from Copper Smelter Slags - Implementation of the DC arc Technology-Bernd Friedrich, Hira P. Singh ... Electric furnaces: DC or AC types of EAF/SAF ...

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

    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...

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  • DC arc furnaces – The story of a successful South African ...

    2015-8-7  DC arc furnaces for melting metals date back to 1878 •Sir William Siemens used a DC arc furnace in 1878 with a vertical graphite cathode, with the arc transferred to the melt in contact with a water- cooled bottom anode AC furnaces are more recent than DC furnaces

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  • Factors influencing base metal recovery from waste ...

    2009-8-26  The recovery of cobalt and copper from waste slag was studied in a plasma DC-arc furnace in reducing conditions. Three fluxes, CaO, CaF2, and TiO, were investigated for their influence on selective recovery of cobalt into an iron-rich alloy.

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

    2017-6-9  The Matte Settling Electric Furnace (MSEF) is capable of processing copper matte, various converter slags, reverts from different sources and coke to produce a slag with a maximum copper content of 0.7%. The MSEF at Kansanshi is continuously charged via two launders with matte and slag coming from the ISASMELT.

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  • Implementation of a Novel Technology for the Recovery

    2016-10-21  In January 2001, Chambishi Metals commissioned a 40MW DC arc furnace using selective carbothermic reduction for processing reverberatory furnace slag stockpile of 20 million tons containing 0.34 to 4.5% cobalt, and an average of 1.1% copper. Cobalt occurs as faylite whereas copper occurs as oxide and sulphide. An atomizer unit to atomize furnace product, molten Co/Cu/Fe alloy, and a pressure oxidation leach process to leach cobalt and copper and separate iron as goethite was also commissioned. Cobalt and copper

  • Characteristics and utilisation of copper slag—a review ...

    2003-11-1  Jones et al. (1996) reported the recovery of metals, such as nickel, cobalt, and copper in an alloy by treating the copper slag with a carbonaceous reducing agent in a DC arc furnace. Pilot plant test work at Mintek (South Africa) has demonstrated recoveries of 98% nickel and 80% cobalt at the power levels of up to 600 kW and maximum possible ...

  • Energy recovery from high temperature slags - ScienceDirect

    2011-9-1  Attempts to recover energy from metallurgical slags have faced a fundamental constraint that is the low thermal conductivity of slag, ranging from 1 to 3 W m −1 K −1 for solid to 0.1–0.3 W m −1 K −1 for molten slags at 1400–1500 °C , , . This explains why

  • Production of Cobalt and Copper Alloys from Copper Slags ...

    Cite this paper as: Yücel O. (2016) Production of Cobalt and Copper Alloys from Copper Slags via Reduction Smelting in DC Arc Furnace. In: Reddy R.G., Chaubal P., Pistorius P.C., Pal U. (eds) Advances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016.

  • The Submerged Arc Furnace (SAF): State-of-the-Art Metal ...

    2018-1-11  Cobalt Recovery from Copper-Smelter Slags . In January 2001, Chambishi Metals commissioned a 40 MW DC arc furnace using selective carbothermic reduction for processing reverberatory furnace slag stockpile of 20 million tons containing 0.34–4.5% cobalt and an average of 1.1% copper.

  • Process for recovery of iron from copper slag - Agrawal ...

    Yucel et. al [Scand. J. Metal, 1999] reported the treatment of ancient Kure copper slag containing 2.38% cobalt and 3.51% copper by carbothermal reduction process in a DC arc furnace (open top) by adding coke with maximum metal recovery in one hour reduction time at a temperature between 1703-1753 K. In closed system recovery of cobalt was 95.7 ...

  • Characteristics and utilisation of copper slag—a review ...

    2003-11-1  Jones et al. (1996) reported the recovery of metals, such as nickel, cobalt, and copper in an alloy by treating the copper slag with a carbonaceous reducing agent in a DC arc furnace. Pilot plant test work at Mintek (South Africa) has demonstrated recoveries of 98% nickel and 80% cobalt at the power levels of up to 600 kW and maximum possible ...

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  • Recovery of base metals and PGMs in a DC alloy

    2018-8-6  Recovery of base metals and PGMs in a DC alloy-smelting furnace Rodney T Jones, Isabel J Geldenhuys, Quinn G Reynolds (Mintek) ... base metals from slags, and the recovery of platinum group metals (PGMs) via collection in ... furnace slag. Copper in the slag is mainly attributed to the presence of copper-rich sulphides.

  • Projects - Keech Furnace Technologies

    Designed built a 275 kVA AC Furnace for remelting Copper scrap to enable refining ingoting in Morocco – Designed built a pilot furnace to develop a process to recover silicon metal from less than 20 micron fines increasing its value by 5 times in RSA – DC furnace to recover PGMs from diesel catalyst convertors and platinum rich slags ...

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  • Arch. Metall. Mater. 63 (2018), 4, 1923-1930

    Arch. Metall. Mater. 63 (2018), 4, 1923-1930 ... the copper recovery from the slags [6,8,9]. ... note the coagulation and an initial amount of deposited copper is situated at the furnace bottom. The variable current was delivered to the upper electrodes system, only. So, the agglomeration and

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  • Copper and non-ferrous metals metals furnaces,

    2017-2-21  Hearth-shaft furnaces for melting of copper scrap ; Tilting reverberatory and elliptical furnaces for refining of copper scrap to produce FRHC copper : Top blown rotary converters (TBRC) for smelting and anode slime treatment ; Top blown rotary converters (TBRC) for multi purpose melting and refining of cop­ per, alloys, slags, dust, WEEE ...

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  • BEHAVIOUR OF IRON DURING REDUCTION OF SLAG

    For instance, slags generated during copper production are not only pro-cessed for recovery of this particular metal but also for lead, iron etc. [4-8]. During a technological process of copper production in the flash smelting furnace at “KGHM” Polska Miedź, slags with very high contents of copper, lead and iron are generated. These slags

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  • Behaviors of the Molten Copper Slags in the Vertical ...

    copper slags under a vertical electric field. The liquid copper was as the cathode, and a 4 mm diameter platinum rod as the anode. The model of the electrolysis process of fayalite based copper slag was presented in Fig 5. The results were in agreement with the current work. At the interface between the mo lten slags and liquid copper

  • Process for recovery of iron from copper slag - Agrawal ...

    Yucel et. al [Scand. J. Metal, 1999] reported the treatment of ancient Kure copper slag containing 2.38% cobalt and 3.51% copper by carbothermal reduction process in a DC arc furnace (open top) by adding coke with maximum metal recovery in one hour reduction time at a temperature between 1703-1753 K. In closed system recovery of cobalt was 95.7 ...

  • Arch. Metall. Mater. 63 (2018), 4, 1923-1930

    Arch. Metall. Mater. 63 (2018), 4, 1923-1930 ... the copper recovery from the slags [6,8,9]. ... note the coagulation and an initial amount of deposited copper is situated at the furnace bottom. The variable current was delivered to the upper electrodes system, only. So, the agglomeration and

  • Projects - Keech Furnace Technologies

    Designed built a 275 kVA AC Furnace for remelting Copper scrap to enable refining ingoting in Morocco – Designed built a pilot furnace to develop a process to recover silicon metal from less than 20 micron fines increasing its value by 5 times in RSA – DC furnace to recover PGMs from diesel catalyst convertors and platinum rich slags ...

  • DC (Direct current) arc furnaces (DCAF) - optim-toledo

    DC (Direct current) arc furnaces (DCAF) A long experience in operating of AC current steel-making furnaces in combination with DC converter resulted in the technical characteristic of widely used DC arc furnaces. They are correctly sized for the required throughput because of using the same refractory materials, shell and furnace roof arch ...

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

    iron recovery from slags Mining. May 12, 2013 A process for the recovery of iron from copper slag which ... The 20 Mt reverberatory furnace slag dump at Nkana in Zambia ... banded iron ore flotation;

  • Copper and non-ferrous metals metals furnaces,

    2017-2-21  Hearth-shaft furnaces for melting of copper scrap ; Tilting reverberatory and elliptical furnaces for refining of copper scrap to produce FRHC copper : Top blown rotary converters (TBRC) for smelting and anode slime treatment ; Top blown rotary converters (TBRC) for multi purpose melting and refining of cop­ per, alloys, slags, dust, WEEE ...

  • Energy and Environmental Profile of the U.S. Mining

    2013-11-8  slags from some smelting furnaces are higher in copper content than the original ores taken from the mines. Therefore, they may be sent to a concentrator for copper recovery. Tailings from flotation of copper slag are a second RCRA special waste. Traditionally, reverberatory furnaces have been the most common furnaces used

  • Behaviors of the Molten Copper Slags in the Vertical ...

    copper slags under a vertical electric field. The liquid copper was as the cathode, and a 4 mm diameter platinum rod as the anode. The model of the electrolysis process of fayalite based copper slag was presented in Fig 5. The results were in agreement with the current work. At the interface between the mo lten slags and liquid copper

  • Recovery of rare earths from bauxite residue slag by high ...

    2018-7-20  for the recovery of scandium from nickel laterite ores,13,14 but also in the recovery of other valuable metals from nickel converter and smelter slags.12,15 In this work, the bauxite residue sample was mixed with high purity graphite powder, CaO and SiO2, and smelted in an electric arc furnace

  • Process for the fuming treatment of metallurgical slag ...

    A continuous process for the fuming treatment of metallurgical slag, e.g. lead and copper smelting furnace slag. Passing the slag continuously through consecutive slag treatment zones of a fuming furnace, subjecting it in a first one of said zones to heating to fume off comparatively volatile, preferably sulphide-bound constituents thereof, subjecting it in a second one of said zones to ...

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