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

2012-2-7  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. The technology was jointly developed by Mintek and Anglovaal Mining Ltd (Avmin), and the furnace was designed by Bateman 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 ...

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

Optimum coke amount was found to be 10% of the slag weight in an open-top furnace for a 1 hour reduction time in the temperature between 1703 K and 1753 K. Similar conditions in a closed-top furnace resulted in higher cobalt and copper contents of the metallic matte, recoveries and reduction rates, as compared with the open-top furnace.

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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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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

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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.

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Implementation of a Novel Technology for the Recovery

2016-10-21  Implementation of a Novel Technology for the Recovery of Cobalt from Copper Smelter Slags Hira Singh, Bernd Friedrich, Chambishi Metals Plc, Zambia IME Process Metallurgy and Metal Recycling, RWTH Aachen University, Germany Abstract In January 2001, Chambishi Metals commissioned a 40MW DC arc furnace using

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Projects - Keech

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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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 ...

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Recovery of metals from melting furnace slag Mining ...

2013-7-18  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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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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(PDF) Recovery of iron from copper slag Urtnasan ...

Arch. Metall. Mater. 63 (2018), 4, 1793-1798 DOI: 10.24425/amm.2018.125106 U. ERDENEBOLD*, H.-M. CHOI*, J.-P. WANG*# RECOVERY OF PIG IRON FROM COPPER SMELTING SLAG BY REDUCTION SMELTING Copper slag is a by-product obtained during smelting and refining of copper.

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[PDF] The application of Ausmelt technology to base metal ...

Intensive smelting by the use of a top entry lance in a slag bath was developed by the CSIRO in Australia in the early 1970s. Key motivations in the early work were to recover values from slags and to smelt tin concentrates1. This work led to the granting of a patent to the CSIRO for the Sirosmelt Top Entry Submerged Lance (TSL) smelting system2. Dr. J. Floyd, who had headed the team at CSIRO ...

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Characterization of copper slag for beneficiation of iron ...

2021-4-1  Globally a large volume of copper slag is produced which can be approximated to 2.2 tons of slag generated for every ton of copper produced [].The annual worldwide production of slag is approximately 24.6 million tons in the early century [6, 7] and increasing at a rate of 11% per year [].Table 1 illustrates the magnitude of slag produced in different areas in the world and Botswana ...

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Implementation of a Novel Technology for the Recovery

2016-10-21  Implementation of a Novel Technology for the Recovery of Cobalt from Copper Smelter Slags Hira Singh, Bernd Friedrich, Chambishi Metals Plc, Zambia IME Process Metallurgy and Metal Recycling, RWTH Aachen University, Germany Abstract In January 2001, Chambishi Metals commissioned a 40MW DC arc furnace using

Get Price

Implementation of a Novel Technology for the Recovery of ...

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 ...

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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 ...

Get Price

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 ...

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Projects - Keech

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 ...

Get Price

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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UG-Mat Nonferrous Slags Recycled Materials Resource

Nonferrous slags are produced during the recovery and processing of nonferrous metal from natural ores. The slags are molten by-products of high temperature processes that are primarily used to separate the metal and nonmetal constituents contained in the

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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

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[PDF] The application of Ausmelt technology to base metal ...

Intensive smelting by the use of a top entry lance in a slag bath was developed by the CSIRO in Australia in the early 1970s. Key motivations in the early work were to recover values from slags and to smelt tin concentrates1. This work led to the granting of a patent to the CSIRO for the Sirosmelt Top Entry Submerged Lance (TSL) smelting system2. Dr. J. Floyd, who had headed the team at CSIRO ...

Get Price