dc arch furnace for copper recovery from slags

Recovery of cobalt, nickel, and copper from slags, using

During 1995, a campaign was conducted on Mintek's 200 kVA DCarc furnace to recover cobalt from copper reverberatory furnace slag (initially containing Co:077% and Cu:13%) Alloys containing Co: 67%, Cu: 911%, Fe: 7778%, and S: 23% were produced, leaving slags containing Co: 008016% and Cu: 018029% Coal additions of 4 per cent of the mass of the slag fed, and residence times of

equipment for recovering copper from furnace slags

Dc Arch Furnace For Copper Recovery From Slags Dc arch furnace for copper recovery from slags the mt reverberatory furnace slag dump at nkana in zambia contains a substantial quantity of cobalt a 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

"Metal recovery from slags using DC arc furnace

By Adrian C Deneys, Published on 01/01/98

Cited by: 1

dc arch furnace for copper recovery from slags

dc arch furnace for copper recovery from slags Recovery of base metals and PGMs in a DC alloysmelting furnace 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 copperrich sulphides The cobalt oxide and to a lesser extent the copper oxide associated with the silicateoxide

Improving Copper Recovery from Production Slags by

Keywords: slag cleaning, stirring mode, copper slag, submerged arc furnace, stirring reactor Abstract Slags resulting from pyrometallurgical copper processes are important byproducts to be controlled in structure and composition Due to the significant volumes of slag compared with those of the target metal it is mandatory – as already practiced today – to use the slag as a product eg

Recovery of cobalt from slag in a DC arc furnace at

Conference: Copper cobalt nickel and zinc recovery, 16–18 July 2001 Vol102 No1 Recovery of cobalt from slag in a DC arc furnace at Chambishi, Zambia More recently, attention has been focused on the Nkana slag dump on the Zambian Copperbelt More than six decades of copper mining and smelting at the site near Kitwe, 250 km north of Lusaka, have left behind about 20 million tons of slag

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 238% cobalt and 351% 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 17031753 K In closed system recovery of cobalt was 957% and copper was 90% Fluxing materials such as

Cited by: 13

Recovery of cobalt from slag in a DC arc furnace at

Copper Cobalt Nickel and Zinc Recovery conference, Victoria Falls, Zimbabwe, 1618 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 The technology was jointly developed by Mintek and Anglovaal Mining Ltd

DC Electric Arc Furnace – IspatGuru

15/05/2013· DC arc furnaces have special refractories at the bottom because of the anode is installed in the bottom of the furnace Besides the bottom refractories, other important points which are to be considered for design of the refractory lining are refractory zoning pattern, hearth contour, slag line location, taphole size, angle, and location, roof orientation, expansion allowances, burner port

DC arc furnaces – The story of a successful South African

• DC arc furnaces –an interesting past, a productive present, and a promising future • DC arc furnaces are not a panacea for all metallurgical problems, but are very well suited to a number of reductive smelting processes where they have been applied successfully in a number of industrial contexts, and many further applications are expected

"Metal recovery from slags using DC arc furnace

By Adrian C Deneys, Published on 01/01/98

Production of Cobalt and Copper Alloys from Copper

Request PDF | Production of Cobalt and Copper Alloys from Copper Slags via Reduction Smelting in DC Arc Furnace | In the present work, the effects of amount of coke, reduction temperature and

DC Arc Furnace Technology Applied to Smelting Applications

DC Arc Furnace Technology Applied to Smelting Applications Kjell Bergman seal the furnace for improved energy recovery from the process gases The furnace can be designed with one, two or three electrodes, depending on the actual smelting process and the required power The conductive bottom is designed with conductive refractory material or, as an alternative, withwatercooledanodes as

Recovery of copper and cobalt from ancient slag Gülay

01/04/2006· Yücel O , Sahin FC Sirin, B & Addemir O (1999) A reduction study of copper slag in a DC arc furnace Scandinavian Journal of Metallurgy, 28, 93 99 Google Scholar

Characteristics and utilisation of copper slag—a review

01/11/2003· 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 quantity of iron oxide in the slag Copper slag

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 238% cobalt and 351% 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 17031753 K In closed system recovery of cobalt was 957% and copper was 90% Fluxing materials such as

DC Arc Furnaces minductiontech

DC Arc Furnace is much better than AC Arc Furnaces We can do the Conversion from AC to DC Furnace DC ARC FURNACES FROM 5 MT TO 100 MT : DC Arc furnace is the most versatile means for melting ferrous metals Until recently, AC Arc Furnaces were used for melting as generation & distribution of AC power was convenient But with the progress in thyristor Technology, DC Supply

Implementation of a Novel Technology for the Recovery of

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 selective carbothermic reduction for processing reverberatory furnace slag

Extracting Value from Mine Ores & Wastes using DC

19/09/2016· 9 Examples of Plasma Smelting of Mining Wastes Waste Type Recovery of: Chromite ore fines Ferrochrome alloy Stainless steel dusts Ferronickelchrome alloy Ilmenite fines Titanium dioxideenriched slag Ferroalloy fines Recovery of ferroalloy Lead blast furnace slag Lead and inert slag Zinccontaining wastes Zinc oxide Air pollution control residues HCl and inert slag Electronics waste Copper

Recovery of cobalt from slag in a DC arc furnace at

Recovery of cobalt from slag in a DC arc furnace at Mintek

Recovery of copper and cobalt from ancient slag Gülay

01/04/2006· Yücel O , Sahin FC Sirin, B & Addemir O (1999) A reduction study of copper slag in a DC arc furnace Scandinavian Journal of Metallurgy, 28, 93 99 Google Scholar

DC Arc Furnace Technology Applied to Smelting Applications

DC Arc Furnace Technology Applied to Smelting Applications Kjell Bergman seal the furnace for improved energy recovery from the process gases The furnace can be designed with one, two or three electrodes, depending on the actual smelting process and the required power The conductive bottom is designed with conductive refractory material or, as an alternative, withwatercooledanodes as

Characteristics and utilisation of copper slag—a review

01/11/2003· 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 quantity of iron oxide in the slag Copper slag

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 238% cobalt and 351% 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 17031753 K In closed system recovery of cobalt was 957% and copper was 90% Fluxing materials such as

Production of Cobalt and Copper Alloys from Copper

In the present work, the effects of amount of coke, reduction temperature and furnace types on copper slag smelting in a dc arc furnace were studied Optimum coke amount was found to be 10% of the slag weight in an opentop furnace for a 1 hour reduction time in the temperature between 1703 K and 1753 K Similar conditions in a closedtop furnace resulted in higher cobalt and copper contents

Latest results of the slag cleaning reactor for copper

cleaning furnaces Metal losses in discard slags as in the copper and PGM industry are the main factor determining overall plant recovery The metals are present in dissolved form and as matte or metallic inclusions of size from 2 to 1 000 μm2–7 Conventional pyrometallurgical slag cleaning by submerged arc furnaces (see Figure 1) consists of

Recovery of cobalt from slag in a DC arc furnace at

Recovery of cobalt from slag in a DC arc furnace at Mintek READ Show more documents ; Share

LOW COST FERROALLOY EXTRACTION IN DCARC FURNACE

while operating a 44 MW DCarc furnace, MFC mitigated all known challenges and considered up scaling risk in the new plant, which had a rapid ramp up to full power in Q2 of 2009 Good operating practices, as made possible by robust equipment selection, including a thyristor rectifier set of proven technology, and operation with optimal slag chemistry, leads to a safe and effective plant

PLASMA SMELTING OF UNCONVENTIONAL ORES AND MINE RESIDUES

Tetronics’ DC plasma arc technology has been used for the commercial recovery of platinum group metals (PGM) from automotive and industrial catalysts for over 30 years The unique combination of design and operational benefits of the technology during this period has ensured that industryleading technical recovery rates have been demonstrated for a wide range of PM and PGM at both a pilot

Extracting Value from Mine Ores & Wastes using DC

19/09/2016· 9 Examples of Plasma Smelting of Mining Wastes Waste Type Recovery of: Chromite ore fines Ferrochrome alloy Stainless steel dusts Ferronickelchrome alloy Ilmenite fines Titanium dioxideenriched slag Ferroalloy fines Recovery of ferroalloy Lead blast furnace slag Lead and inert slag Zinccontaining wastes Zinc oxide Air pollution control residues HCl and inert slag Electronics waste Copper