Yucel et al. (1999) reported the treatment of ancient Kure copper slag by carbothermal reduction process in a DC arc furnace of open top type by adding coke. In 1-h reduction time at a temperature between 1430 and 1480 °C maximum metal recovery was obtained.
2002 Continuous operating circular copper slag-cleaning furnace 2003 Side-wall copper-cooling system for large-capacity rectangular furnace 2004 Continuous operating rectangular copper slag-cleaning furnace 2004 High-capacity 120 MVA rectangular furnaces with thyristor and copper-cooling system 2006 Pilot plant DC slag-cleaning unit for ...
Energy and Environmental Profile of the U.S. Mining Industry RCRA special waste. Special wastes are excluded from the RCRA statute. The 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.
from waste reverberatory furnace slags in a 50 kVA laboratory DC plasma arc furnace by W. Banda*, N.T. Beukes*, and J.J. Eksteen Paper written on project work carried out in partial fulfilment of Phd. (Process Engineering) degree* Synopsis The recovery of cobalt and copper from waste slag was studied in a plasma DC-arc furnace in reducing ...
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Nonferrous Slags - Material Description ORIGIN 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 bulk ore.
advanced submerged arc furnaces make use of software controllers. The DC application for submerged arc furnace technology shows world-wide an increasing market share in niche areas especially in some ferro-alloys, slag cleaning and TiO2 production units. Nevertheless, the majority of submerged arc furnaces are and will remain AC-technology-based.
Recovery of cobalt, nickel, and copper from slags, using DC-. slags, since 1988, using DC-arc furnace . and the recovery of iron to the alloy is . or the distribution of iron between metal and . iron and steel enterprises blast furnace slag powder processing
An electric arc furnace (EAF) is a furnace that heats charged material by means of an electric arc. Industrial arc furnaces range in size from small units of approximately one ton capacity (used in foundries for producing cast iron products) up to about 400 ton units used for secondary steelmaking .
Detailed designs have been completed for DC furnaces, with capacities of 70 MW and higher.Tenova Pyromet is a leading designer and supplier of high-capacity electric submerged-arc smelting furnaces and complete smelting plants for the production of ferroalloys, base metals, slag …
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
Copper Slag. Air-cooled copper slag has a black color and glassy appearance. As a general rule, the specific gravity will vary with iron content, from a low of 2.8 to as high as 3.8. (15) The unit weight of copper slag is somewhat higher than that of conventional aggregate. The absorption of the material is typically very low (0.13 percent).
copper and its alloys, copper wastes (up to shaves in the blast-furnace mixture) various ferroalloys, including ferrotitanium, ferrochromium, ferrovanadium, low-carbon ferromanganese, silicocalcium, calcium carbide and slag wastes after producing ferroalloys on the standard furnaces.
DC-arc furnace technology has been successfully applied to the recovery of cobalt, nickel, and copper from non-ferrous furnace and converter slags. 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.
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 open-top furnace for a 1 hour reduction time in the temperature between 1703 K and ...
Jun 20, 2018· Recovery of cobalt, nickel, and copper from slags, using DC-arc . The furnace comprises a refractory-lined cylindrical steel shell, and a lower conical section of the bag plant, is discharged via a rotary valve into a collecting drum. .. This results in hot zones, which reduce the freeze-line of solidified slag near ..
Recovering Iron from Copper Smelting Furnace Slags . ... Recovery of cobalt from slag in a DC arc furnace at . Recovery of cobalt from slag in a DC arc furnace at Chambishiequipment for material handling and feed preparationCoO in copper reverberatory furnace slag. Read more.
Recovery of copper and cobalt from ancient slag ... A reduction study of copper slag in a DC arc furnace. Scandinavian Journal of Metallurgy, 28, 93-99. Google Scholar ... (1992) Recovery of cobalt from copper slags. Mineral Processing and Extractive Metallurgy Review, 10, 99-107. Google Scholar, Crossref: Ziyadanogullari, B ...
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 TiO2, were investigated for their influence on selective recovery of cobalt into an iron-rich alloy.
Recovery of cobalt from slag in a DC arc furnace at, Recovery of cobalt from slag in a DC arc furnace at Chambishi, Zambia, the slag, the various metallic, the slag significantly increases the recovery of . ... Patent US3868440 - Recovery of metal values from copper slag.