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Recovery of iron from copper slag via modified roasting in ...

2020-6-4  Based on the above analysis, a new method of recovery of iron from copper slag via modified roasting and magnetic separation is proposed, where the whole system is in a weak oxidizing atmosphere due to stable equilibrium of CO 2 –CO [ 19 ], and ferrous oxide (FeO) in fayalite is separated by adding flux (CaO) [ 20 ], and then the free FeO is oxidized and roasted to magnetite at lower temperature.

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Iron Recovery from Discarded Copper Slag in a RHF

2016-11-3  dispersive spectroscopy (EDS) indicates that fayalite (2FeOSiO2) and magnetite (Fe3O4) in the copper slag are reduced into metallic Fe in the direct reduction (DR) process, and the mass and heat transfer become stronger from the bottom to the top layer

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Innovative methodology for comprehensive and harmless ...

2018-6-20  In recent years, extensive studies have been carried out to recover the valuable metals from copper slag, involving in magnetic separation (Zheng and Xiao, 2011), selective agglomeration-reverse flotation (Subrata et al., 2015), slag modification-physical separation (Guo et al., 2016), smelting reduction (Prince et al., 2017),aluminothermic smelting reduction (Heo et al., 2016), direct reduction

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Improving Beneficiation of Copper and Iron from Copper ...

2018-12-10  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

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铜渣转底炉直接还原磁选与熔分工艺比较

2017-11-9  Abstract: Taking a domestic copper slag as the subject, comparison between the rotary hearth furnace direct reduction process followed by a magnetic separation process and the same rotary hearth furnace direct reduction process followed by a gas smelting process, were investigated. Firstly, the optimum reaction parameters were determined by basic tests, based on which the pilot plant scale tests were conducted to reveal the direct reduction mechanism of the copper slag in the rotary hearth furnace direct reduction process. Finally, computation and comparison analysis of energy consumption of both processes were carried out. The results show that after direct reduction in the rotary hearth furnace, fayalite (Fe2SiO4) and magnetite (Fe3O4) in the copper slag are phased-changed into iron (Fe), quartz (SiO2) and trace amounts of augite (Ca(Fe,Mg)Si2O6) in the metallized pellets. The reduced iron grains aggregate and grow into iron chain crystals, which is the precondition for further iron enrichment either in the magnetic separation

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Magnetic separation-sulphuric acid leaching of Cu–Co–Fe ...

2014-10-1  So the magnetic separation was used to separate the cobalt from copper and achieve the separate recovery of cobalt and copper. The MS-SAL process consists of a magnetic separation from ground matte to produce concentrate (magnetic separation stage), followed by the sulphuric acid leaching of the concentrate (sulphuric acid leaching stage).

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Utilization of Waste Copper Slag to Produce Directly ...

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

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Liberation and Enrichment of Metallic Iron from ...

2021-2-20  Unfortunately, only iron in reductively roasted copper slag is recovered by grinding magnetic separation. Silicon, aluminum, calcium, and magnesium are disposed of into the tailing. Adding nonrecyclable fluxes increases the tailing yield.

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Innovative methodology for comprehensive and harmless ...

2018-3-26  It is very difficult to extract valuable metals from copper slag and nickel laterite through traditional separation processes due to their complex mineral structure. In this work, a selective co-reduction and magnetic separation process was developed to economically and eco-friendly clean copper slag and synchronously upgrade nickel laterite.

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Imagnetic separation copper slag - buromas

Improving Separation of Cu–Fe from Copper Slag by . In this paper, the feasibility of an integrated technological route to improve beneficiation of copper and iron components from copper slag through the modifiion of molten slag was investigated, and the results shows that: the copper grade of rougher copper concentrate was increased from 6.43 to 11.04%, iron recovery from magnetic separation

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Innovative methodology for comprehensive and harmless ...

2018-6-20  In this work, a selective co-reduction and magnetic separation process was developed to economically and eco-friendly clean copper slag and synchronously upgrade nickel laterite. Through the innovative process, not only the valuable metals, such as Fe, Ni and Cu, can be recovered, but also the hazardous elements can be removed from copper slag ...

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Improving Beneficiation of Copper and Iron from Copper ...

2018-12-10  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

Get Price

铜渣转底炉直接还原磁选与熔分工艺比较

2017-11-9  Comparisons between magnetic separation and gas smelting separation process to treat copper slag by rotary hearth furnace direct reduction CAO Zhicheng 1, 2, SUN Tichang1, XUE Xun1, 2, LIU Zhanhua (1. Key Laboratory of Ministry of Education for

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Recovery of γ-Fe2O3 from copper ore tailings by ...

Abstract. To comprehensively reuse copper ore tailings, the recovery of γ-Fe 2 O 3 from magnetic roasted slag after sulfur release from copper ore tailings followed by magnetic separation is performed. In this work, after analysis of chemical composition and mineralogical phase composition, the effects of parameters in both magnetization roasting and magnetic separation process with respect ...

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Utilization of Waste Copper Slag to Produce Directly ...

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

Get Price

Utilization of Waste Copper Slag to Produce Directly ...

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

Get Price

Synergetic utilization of copper slag and ferruginous ...

2019-12-4  This paper proposes an eco-friendly process to synchronously utilise copper slag and ferruginous manganese ore by co-reduction followed by a magnetic-separation process to solve those problems. In the process, MnO 2 within FMO acted as a catalyst to promote the reduction of fayalite and copper sulphide contained in CS, and thus improve the metallization rate of Fe and Cu.

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Innovative methodology for comprehensive and harmless ...

2018-3-26  In this work, a selective co-reduction and magnetic separation process was developed to economically and eco-friendly clean copper slag and synchronously upgrade nickel laterite. Through the innovative process, not only the valuable metals, such as Fe, Ni and Cu, can be recovered, but also the hazardous elements can be removed from copper slag, including As, Pb and Zn.

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Imagnetic separation copper slag - buromas

Improving Separation of Cu–Fe from Copper Slag by . In this paper, the feasibility of an integrated technological route to improve beneficiation of copper and iron components from copper slag through the modifiion of molten slag was investigated, and the results shows that: the copper grade of rougher copper concentrate was increased from 6.43 to 11.04%, iron recovery from magnetic separation

Get Price

Improving Beneficiation of Copper and Iron from Copper ...

2018-12-10  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

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铜渣改质、磁选及磁选尾渣制备陶瓷的基础研究

2020-9-29  Abstract: Copper slag is difficult to be used efficiently.Thus, a new technology was proposed to improve the magnetic separation rate of solidified copper slag and further prepare the magnetic separation tailings slag as ceramic material by using red mud ...

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Deep reduction recovery of iron from copper slag IIETA

2018-12-31  Magnetic metallic iron powder with low S and P contents, high iron content (92.96%) and high iron recovery rate (93.49%) were produced through deep reduction magnetic separation using coke powder as reductant and CaO as flux under 1,300 °C for 2h.

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Recovery of γ-Fe2O3 from copper ore tailings by ...

Abstract. To comprehensively reuse copper ore tailings, the recovery of γ-Fe 2 O 3 from magnetic roasted slag after sulfur release from copper ore tailings followed by magnetic separation is performed. In this work, after analysis of chemical composition and mineralogical phase composition, the effects of parameters in both magnetization roasting and magnetic separation process with respect ...

Get Price

Utilization of Waste Copper Slag to Produce Directly ...

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

Get Price

Utilization of Waste Copper Slag to Produce Directly ...

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

Get Price

铜冶炼渣选铜尾矿还原焙烧—磁选回收铁工艺研究-Iron ...

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 ...

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Eddy current separator - IFE Aufbereitungstechnik GmbH

efficient non-ferrous metals separation. IFE eddy current separators are used to separate non-ferrous metals (aluminium, copper, brass, etc.) from bulk material of all kinds. The special model IFE ENOS is used to: removal of non-ferrous particles from bulk streams. (plastic fractions, cable scrap, etc.) generation of non-ferrous concentrates.

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中南大学 郭正启 - Central South University

2021-8-5  Innovative methodology for comprehensive and harmless utilization of waste copper slag via selective reduction-magnetic separation process, Journal of Cleaner Production,2018,187 :910-922. Deqing Zhu, Liaoting Pan, Zhengqi Guo*, Jian Pan, Fang Zhang. Utilization of limonitic nickel laterite to produce ferronickel concentrate by the selective ...

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