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An Overview of Recovery of Metals from Slags

P.K. Jena. A study of the recovery of copper, nickel and cobalt from copper converter and smelter slags by leaching with ferric chloride is reported. The converter slag from Ghatsila, India ...

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Distribution of copper and iron components with hydrogen ...

Li et al. used waste cooking oil as a reductant to reduce magnetic iron in copper smelting slag and the results showed that the magnetic iron content could be reduced to less than 2% and the reduction efficiency of magnetic iron was over 90% after a reduction time of 4 min. Kumar et al. studied the production of iron with waste macadamia as a ...

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WASTEFREE TECHNOLOGY FOR PROCESSING SMELTER SLAG …

several technological processes: flotation and leaching, utilized for recovery of copper from smelter slag, followed by magnetic concentration, where magnetic fraction can be used as suspensoid in heavy media separation processes and non-magnetic fraction that could be

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Recovery of metal values from copper slag and reuse of ...

Copper slag was characterized and processed. The pyro-metallurgical processing prospects to generate utilizable materials were arrived at through rigorous thermodynamic analysis. Carbothermal reduction at elevated temperature (near 1440°C) helped recover a majority of the metal values (e.g., Fe, Cu and Mo) into the iron-rich alloy product ...

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

A process for the recovery of iron from copper slag which comprises: i. selecting and grinding the copper slag to [the] a size in the range of 2-15 mm. ii. mixing homogeneously copper slag, a reductant and a flux in the ratio range between 20:1:4 to 20:3:10. iii.

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Heavy Metal Recovery from Slags of Copper Production via ...

4 Slag cleaning by using additives The copper recovery from slag during smelting is generally related to the settling be-haviour of the matte. The settling velocity mainly depends on the size of the particles. Metallic/matte droplets with a big diameter settle very fast, smaller particles settle much slower to the ground of the bath.

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Iron Recovery from Copper Slag Through Oxidation-Reduction ...

12%Iron recovery from copper slag with lignite-based direct reduction followed by magnetic separation [J]. Chinese Journal of Nonferrous Metals, 2011, 21(5): 1165–1170. Google Scholar

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Effects of Na2O additions to copper slag on iron recovery ...

A new process for green and efficient utilization of copper slag was put forward. • Addition of Na 2 O in slag promoted magnetite growth but decrease magnetite quantity.. Slag with 4 % Na 2 O had a markedly decreased viscosity and iron recovery rate of 81.08 %.. Na 2 O in ceramics reduced sintering temperature but meantime degraded bending strength.. Non-magnetic residue …

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BACKGROUND REPORT SECONDARY COPPER SMELTING, …

Figure 2.2-1 Low-grade copper recovery electrolyte in the refinery cells or sold as a product. Smelting of low-grade copper scrap begins with melting in either a blast or a rotary furnace, resulting in slag and impure copper. If a blast furnace is used, this copper is charged to a

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Recovery of Copper and Magnetite from Copper Slag Using ...

On the one hand, copper slag is nowadays a waste in copper pyrometallurgy despite the significant quantities of iron (>40 wt. %) and copper (1 to 2 wt. %). On the other hand, solar energy, when properly concentrated, offers great potential in high-temperature processes. Therefore, concentrated solar power (CSP) could be used in the treatment of copper slag to transform fayalite into magnetite ...

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Improving Beneficiation of Copper and Iron from Copper ...

copper concentrate was increased from 6.43% to 11.04%, iron recovery of magnetic separation was increased significantly from 32.40% to 63.26%, and other evaluation indexes were changed slightly, in comparison with unmodified copper slag.

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Recovery of Copper from Reverberatory Copper Slag and ...

The slurry was stirred by magnetic stirrer. A schematic flow diagram of the leaching of copper from copper slag is shown in Figure 1. ... The optimum digestion temperature is 250oC, at which a high recovery of copper from copper slag is achieved. Figure 7. Copper …

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Physicochemical Properties of the Molten Iron-Rich Slags ...

The properties of a molten slag play an important role in the separation of the slag from the matte during copper smelting. In this study, the viscosity, electrical conductivity, density, and surface tension of molten FeO{sub t}-SiO{sub 2}-CaO-based slags were measured, and …

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Iron Recovery from Copper Slag Through Oxidation-Reduction ...

A magnetic product containing about 57.9wt% iron was obtained from the magnetic separation under a magnetic field strength of 100 mT. Large amounts of copper slag containing about 40 wt% iron is generated during the process of producing copper. Recovery of iron from the copper slag is very essential not only for recycling the valuable metals ...

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[PDF] Recovery of copper from the copper slag and copper ...

Copper smelter slag and copper smelter slag flotation tailings were leached using sulphuric acid solutions, without or with the addition of either ferric sulphate or hydrogen peroxide. Copper extraction from the slag was typically found to be twice as high as that from the slag flotation tailings. Hydrogen peroxide was determined to be the best lixiviant. Thus, copper and iron extractions were ...

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How to Recover Copper from Slag by Flotation

Possibilities for minimizing copper losses in converter slags include: (1) settling the molten slag to recover entrained matte and copper, (2) smelting the slag with a suitable reductant to recover a copper-iron alloy or a low-grade matte. (3) beneficiation of slags by magnetic separation, and. (4) treatment of the slag by flotation.

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Copper extraction - Wikipedia

Copper extraction refers to the methods used to obtain copper from its ores.The conversion of copper consists of a series of physical and electrochemical processes. Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors.. As in all mining operations, the ore must usually be beneficiated (concentrated).

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—-Iron Recovery from Copper …

Abstract:Iron was recovered from copper tailings of copper smelting slag by reduction roasting and magnetic separation with powdered carbon as reductant.Effect of parameters on iron recovery was investigated and verified with experiments. The results show that content of iron in magnetic concentrate is 92.16% and that of iron in gangue drops to 3.91% with iron recovery of …

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Iron recovery from copper-slag with lignite-based direct ...

: In order to recycle iron from copper slag with total iron content(TFe) of 39.96%(mass fraction),a technique with lignite-based direct reduction followed by magnetic separation was presented.After analysis of chemical composition and crystalline phase,according to experimental mechanism,the tests for studying the effects of different parameters on the recovery of iron were carried out ...

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(PDF) Recovery of metal values from copper slags by ...

The recovery of copper and cobalt from ancient copper slags from the Küre region of Turkey was investigated. A fayalitic-type of ancient copper slag containing 1.24% Cu, 0.53% Co and 53.16% Fe ...

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Deep reduction recovery of iron from copper slag | IIETA

Deep reduction recovery of iron from copper slag. This paper explores the effects of reductant, flux, reduction temperature and reduction time on the iron content and iron recovery rate of the deep reduction product from copper slag containing 41.47% of iron. Through a series of tests, it is concluded that reduction temperature and reduction ...

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Iron recovery from copper-slag with lignite-based direct ...

By using DR followed by a magnetic separation process for iron recovery from copper slag, Yang [10] obtained iron powder of 92.05% iron content with an iron recovery rate of 81.01%, and Wang [11 ...

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US20070283785A1 - Process for recovery of iron from copper ...

The present invention relates to a process for recovery of iron from copper slag. This invention particularly relates to a process for recovery of iron from a waste like granulated copper slag generated during the production of copper from its ores by a pyrometallurgical method. The present invention will be useful for solving the ecological and environmental issues with an added economic ...

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high efficient copper ore magnetic separator ore dressing ...

High Efficient Copper Ore Magnetic Separator Ore . High Efficient Copper Ore Magnetic Separator Ore Dressing Plant. Rotary Dryer. Power 7.5 75kw Processing Capacity 10 30TPH Applied Materials Slag, blast furnace slag, fly ash, cinder, slag, carbide slag, limestone, clay, sand, quartz sand, etc. Magnetic …

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

Copper sulphide and copper metal (with its inherent cobalt content), because of their higher densities and immiscibility with the slag, settle from the molten slag into the metal bath. Improving recoveries via this mechanism would involve decreasing the viscosity of the slag (by increased temperature or flux additions), and / or increasing the ...

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Effect of Na2CO3 Addition on Carbothermic Reduction of ...

Copper smelting slag is a useful secondary resource containing high iron and copper, which can be utilized to prepare crude Fe-Cu alloy by a direct reduction–magnetic separation process for making weathering-resistant steel. However, it is difficult to recover iron and copper from the slag by direct reduction since the iron mainly occurs in fayalite and the copper is held in copper sulfide.

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Synergetic utilization of copper slag and ferruginous ...

Attempts to economically and effectively treat copper slag (CS) and ferruginous manganese ore(FMO) using the traditional direct reduction–magnetic separation process have faced many challenges, such as low levels of metal recovery, poor cost-effectiveness and the need for a high proportion of additives.

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Copper Recovery Through Smelter Slag Flotation in Atacama ...

the beneficiation of copper and iron components from copper slag, by modifying the molten slag to promote the mineralization and grain growth of the valuable compounds. Results showed that, under the proper conditions, the copper grade of the rougher stage increased from 6,43% to 11,04%; the iron recovery of magnetic separation significantly

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RECOVERY OF COPPER FROM SMELTING SLAG BY …

Recovery of copper from smelting slag by sulphation roasting and water leaching 411 Materials and experimental methods Experiments were conducted using a reverberatory furnace slag from the Bor Copper Concentrator, Serbia. The slag was sampled from the crushing line before entering the milling section of the concentrator.

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NICKEL RECOVERY FROM ELECTRIC ARC FURNACE SLAG BY …

The target of the current work is to investigate the possibility of nickel recovery from EAF slag by magnetic separation. To meet the target, the effect of the following parameters was studied: grain size, magnetic field intensity, thickness of slag layer, moisture content, and re-grinding of the coarser slag …

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Dilution of copper slag under reduction of rubber seed oil

Copper in copper slag was collided and aggregated. Finally, the sediment accumulated at the bottom of the crucible. The ferrite phase increased and the magnet phase decreased during the dilution process. Copper particles first accumulated at the bottom of the crucible, then it increased from 1 cm to 3 cm slowly. The recovery rate of copper ...

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Marvin Mushibwe - Quality Inspector - Scaw Limited Zambia ...

• Responsible for carrying out laboratory test experiments for copper and cobalt recovery from smelter slag • Established particle size distribution for the slag material, and carried out flotation works for the slag • Investigated different collectors and collector dosages to establish the best dosage

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