Recovery of iron and copper from copper tailings by coal-based .Oct 15, 2017 . A technique comprising coal-based direct reduction followed by magnetic separation was presented to recover iron and copper from copper slag flotation tailings. Optimal process parameters, such as reductant and additive ratios, reduction temperature, and reduction time, were experimentally determined.copper recovery magnetic slag,Utilization of nickel slag using selective reduction . - Science DirectAbstract: In order to utilize slag discarded by nickel plants, the selective recovery of nickel and copper versus iron was investigated by selective reduction, which was achieved by controlling the reduction parameters and magnetic separation process on bench scale. The results show that increasing the basicity (mass ratio of.
Improving Copper Recovery from Production Slags by Advanced .Improving Copper Recovery from Production Slags by Advances Stirring Methods. Proceedings of . Keywords: slag cleaning, stirring mode, copper slag, submerged arc furnace, stirring reactor. Abstract ... On the assumptions of a shielding effect on the magnetic field strength because of the graphite-layer between the two.copper recovery magnetic slag,Preparation of metallic iron powder from copper slag by .Copper slag is a solid waste that has to be treated for metals recovery. In order to recover iron from copper slag, the technology of carbothermic reduction and magnetic separation was developed. During the reduction roasting, additive CaO reacted with Fe2SiO4 of copper slag, forming. CaO·SiO2 and 2CaO·SiO2, which.John Frank
Waste copper slag is a refractory material with high iron content, but it is difficult to recovery iron minerals from the slag because the iron mainly occurs in fayalite. A new technology of coal-based direct reduction-magnetic separation process was developed to recover iron from the slag assaying 39.85% Fetotal and 0.33%.
Iron Recovery from Copper Slag Through Oxidation-Reduction Magnetic Concentration at Intermediate Temperature. Authors; Authors and . Recovery of iron from the copper slag is very essential not only for recycling the valuable metals and mineral resources but also for protecting the environment. The purpose of this.
Apr 18, 2014 . Magnetic separation of precipitated magnetite (Fe3O4) crystals in the copper slag is one of the most effective methods to recover iron resources. It is preferable to convert molten fayalite slag to magnetite during the cooling of the slag with oxidation. With a time-temperature-transformation (TTT) diagram, the.
Oct 15, 2017 . A technique comprising coal-based direct reduction followed by magnetic separation was presented to recover iron and copper from copper slag flotation tailings. Optimal process parameters, such as reductant and additive ratios, reduction temperature, and reduction time, were experimentally determined.
Improving Copper Recovery from Production Slags by Advances Stirring Methods. Proceedings of . Keywords: slag cleaning, stirring mode, copper slag, submerged arc furnace, stirring reactor. Abstract ... On the assumptions of a shielding effect on the magnetic field strength because of the graphite-layer between the two.
Copper slag is a solid waste that has to be treated for metals recovery. In order to recover iron from copper slag, the technology of carbothermic reduction and magnetic separation was developed. During the reduction roasting, additive CaO reacted with Fe2SiO4 of copper slag, forming. CaO·SiO2 and 2CaO·SiO2, which.
Apr 14, 2016 . An earlier work noted that magnetic separation is a feasible way to recover iron from the tailings of waste copper slag flotation. Unfortunately, the iron grade of magnetic products and the recovery of iron by the magnetic separation process is relatively low, only 52.21% and 38.09%, respectively, due to the.
Secondary copper recovery is divided into 4 separate operations: scrap pretreatment, smelting, alloying, and casting. Pretreatment . and magnetic separation. The scrap may then be compressed into . pretreatment methods include flotation and leaching to recover copper from slag. Flotation is typically used when slag.
Keywords: DC arc furnace, plasma, slag cleaning, cobalt recovery, zinc fuming, Enviroplas, jigging, re-melting .. A slag magnetic separation process . roasting, it is possible to recover Cu, Co, and Ni from copper slag. This paper examines an alternative pyrometallurgical metal recovery process based on the open-bath.
metal recovery. Fe removal from the leaching of copper slag is done by the formation of a metal hydroxide. Hydrolysis is the most common form of precipitation . slag. The temperature of digestion was 250oC. The residue was leached using a single volume of distilled water for 12 h. The slurry was stirred by magnetic stirrer.
Waste Manag Res. 2006 Apr;24(2):118-24. Recovery of copper and cobalt from ancient slag. Bulut G(1). Author information: (1)Istanbul Technical University, Mining Engineering Department, Mineral and Coal Processing Section, Maslak-Istanbul, Turkey. gbulutitu.edu.tr. About 2.5 million tonnes of copper smelter slag are.
The clean, sized scrap is recycled as part of the scrap charge. The remaining material is fed into magnetic separation and screening systems which recover valuable, residual metallics for internal mill consumption and converts the slag into marketable aggregate products. For more information on our metal recovery services.
concept comprises a magnetic field in the recovery furnace to increase the recovery rate by electro- magnetic stirring. The feasibility of the electromagnetic (EM) copper slag cleaning process was tested at the. University of Chile on the laboratory scale . The industrial scale pilot plant was realized by Aurubis. AG and SMS.
Sembcorp Marine first set up a subsidiary – JPL Industries, in 1990 to take advantage of the opportunities behind copper slag recycling. The company treats, filters and recycles used copper slag. Bulky and magnetic ferrous waste is first separated for removal. The copper slag then undergoes treatment to remove fine.
sis of the components and recovery efficiency. Zinc silicates and zinc oxide in the slag were reduced to zinc violating in fume which could be captured as zinc oxide powder. The reductive product was pulver- ized to a particle size with diameter of 0.045 mm. Cu was then separated from iron by means of magnetic separation.
It should be mentioned that milling and flotation of converter slags to recover copper therefrom is well known in the art. A good study thereof is made in RI 7562 of the Bureau of Mines Report of Investigations/1971, published by the United States Department of the Interior. The converter slags are essentially iron-silica slags.
In this study, a new technique was proposed for the economical and environmentally friendly recovery of valuable metals from copper smelting slag while simultaneously upgrading nickel laterite through a co-reduction followed by wet magnetic separation process. Copper slag with a high FeO content can decrease the.
This copper is currently not or barely recovered and after applying it as a building material it is considered to be lost. Besides this, leaching of heavy metals (mainly copper) from the copper slag into ground waters has a negative environmental impact. Elemetal is able to recover >0.3% of copper from copper slag using the.
Key words: converter slag; cobalt recovery; reduction smelting; slag modifier; cobalt-bearing alloy. 1 Introduction. Cobalt is an important nonferrous metal and used mainly in high-temperature alloys, cemented carbides, magnetic alloys and catalysts for fossil oil refining . So far, about 13 million tons of cobalt resources.