magnetic separation of iron from zinc slag

Magnetic Separation Of Iron From Zinc Slag

A method of separating and recovering iron from a waste non-ferrous slag, discharged from a process for smelting of non-ferrous metals, including copper, zinc and lead, by physical and chemical separation, the method comprising the steps of: (a) crushing the waste non-ferrous slag; (b) mixing the waste non-ferrous slag, crushed in step (a), with carbon as a reducing agent and calcium ...

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Magnetic Separation Of Iron From Zinc Slag

Magnetic separation of slag waste of metallurgical.Magnetic separation of iron from zinc slag, intensity magnetic separator is mainly used for magnetic separation of limonite, zinc, iron spinel, hematite illusion ore, magnetic hematite, titanium magnetite, limonite, hematite and other poor weak magnetic ferrous metal ores or slag.Over head.

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Probing Study on Separating Pb, Zn, and Fe from Lead Slag ...

(1) The process of coal-based direct reduction followed by magnetic separation was conducted to extract metallic iron and separate Pb and Zn from lead slag. Metallic iron powder with 93.73% total iron and recovery rate of 80.32% was obtained under the following optimum conditions: lignite as a reductant, CaO as an additive, lignite ratio of 30%, CaO ratio of 15%, and reduction roasting at 1200 ...

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METHOD OF SEPARATING AND RECOVERING IRON FROM

A method of separating and recovering iron from a waste non-ferrous slag, discharged from a process for smelting of non-ferrous metals, including copper, zinc and lead, by physical and chemical separation, the method comprising the steps of: (a) crushing the waste non-ferrous slag; (b) mixing the waste non-ferrous slag, crushed in step (a), with carbon as a reducing agent and calcium carbonate ...

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A physico-chemical separation process for upgrading iron ...

14/11/2013  Using the developed process, a magnetic product containing more than 65 wt.% iron was obtained from the magnetic separation under a magnetic field strength of 0.03 T for the waste copper slag reduced by petroleum coke (25 wt.%) at 1250 °C for 1.5 h. Also, the percentage recovery of iron was over 85% at the same conditions. Such high percentage of the recovery and grade of iron is the

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Probing Study on Separating Pb, Zn, and Fe from Lead Slag ...

(1) The process of coal-based direct reduction followed by magnetic separation was conducted to extract metallic iron and separate Pb and Zn from lead slag. Metallic iron powder with 93.73% total iron and recovery rate of 80.32% was obtained under the following optimum conditions: lignite as a reductant, CaO as an additive, lignite ratio of 30%, CaO ratio of 15%, and reduction roasting at 1200 ...

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METHOD OF SEPARATING AND RECOVERING IRON FROM

A method of separating and recovering iron from a waste non-ferrous slag, discharged from a process for smelting of non-ferrous metals, including copper, zinc and lead, by physical and chemical separation, the method comprising the steps of: (a) crushing the waste non-ferrous slag; (b) mixing the waste non-ferrous slag, crushed in step (a), with carbon as a reducing agent and calcium carbonate ...

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A physico-chemical separation process for upgrading

14/11/2013  Using the developed process, a magnetic product containing more than 65 wt.% iron was obtained from the magnetic separation under a magnetic field strength of 0.03 T for the waste copper slag reduced by petroleum coke (25 wt.%) at 1250 °C for 1.5 h. Also, the percentage recovery of iron was over 85% at the same conditions. Such high percentage of the recovery and grade of iron is the

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Unburnt carbon and iron content in the ash and slag ...

one-step separation on a magnetic analyzer in water. 1 Introduction Ash-slag materials (ASM) of thermal power plants (TPP) include a significant amount of the basic and acid oxides, and small concentrations of oxides of zinc, titanium, nickel, lead, barium, vanadium, and others. The mineral components of coals after flaring at TPP can be considered technogenic wastes, when they are

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Liberation and Enrichment of Metallic Iron from ...

20/02/2021  Fayalite in copper slag is reduced to metallic iron and silica through carbothermal reduction, and zinc and lead are enriched in the dust.11 Kim et al.8 performed grinding magnetic separation to recover the metallic iron from reductively roasted copper slag obtained at 1250°C and obtained a concentrate of 66.10% Fe content with Fe recovery of 87.03%. However, the concentrate

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Slag - Wikipedia

Slag is the glass-like by-product left over after a desired metal has been separated (i.e., smelted) from its raw ore.Slag is usually a mixture of metal oxides and silicon dioxide.However, slags can contain metal sulfides and elemental metals. While slags are generally used to remove waste in metal smelting, they can also serve other purposes, such as assisting in the temperature control of ...

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Iron Recovery from Discarded Copper Slag in a RHF Direct ...

However, iron recovery rates in direct beneficiation and oxidative modification are too low, whereas energy consumption of the smelting reduction is too high. 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 ...

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Electromagnetic Separation of Copper Iron Sulphides

Mineral is treated carrying as much as 60 per cent. magnetic oxide and as low as 22 per cent. zinc ; after passage over the trommel separator the finished product assays 50 per cent. zinc and from 8 to 12 per cent. oxide of iron. The iron tailing carries from 4 to 8 per cent. zinc, mostly combined with the iron. With sizes over 14 mm. hand picking was found more efficient than the separator ...

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Adverse effects of 9 elements in iron ore on its smelting ...

10/03/2021  calcination – magnetic separation or a combined separation process. Limonite concentrate is obtained by gravity separation, high-intensity magnetic separation, or magnetizing calcination – magnetic separation. There are 4 details of iron concentrates required by smelting plant: 1 High iron content. The iron content of magnetite concentrate should be more than 65%, iron in

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Recovery of Indium from Hard Zinc Slag by Pressure ...

The metal contents of the zinc slag are shown in Table I. The indium content was 3496.50 g/t. An x-ray diffraction (XRD; D/Max 2200, Rigaku, Japan) pattern of the zinc slag is shown in Fig. 1. The intermetallic compounds Cu 5 Zn 8 and Cu 4 Zn and homojunction metals of zinc, iron, and lead were identified as the main mineral phases. Low amounts ...

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Probing Study on Separating Pb, Zn, and Fe from Lead Slag ...

roasted slag by magnetic separation. The effects of roasting temperature, roasting time, and usage of coal and additive were experimentally determined. The following optimum process parameters were proposed: weight ratios of slag, coal ratio of 30%, additive ratio of 15%, and roasting at 1°C for 90 min. Under 200 these conditions, a magnetic concentrate containing 93.73% total iron and ...

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Experiment on Recovery of Multi-Metal from Zinc

For the comprehensive recovery of copper, zinc, silver and iron from the zinc volatile kiln slag in Xining, exploratory experiments were conducted by adopting single flotation, magnetic separation and combined process of magnetic separation and flotation. The results showed that the above process cannot effectively recover copper, zinc and silver from the ore.

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Magnetic Separation - an overview ScienceDirect Topics

Carrier magnetic separation has been proposed for more effective separation of water and solids from acid mine water to generate very pure water (Feng et al., 2000).As discussed in Chapter 10, dissolved heavy metals like zinc and copper can be recovered from acid mine drainage (AMD) by selective precipitation controlling the pH for the precipitation of specific metals.

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Magnetic Separation of Impurities from Hydrometallurgy ...

07/08/2020  Yue et al. applied magnetic iron seeding and separation to separate goethite from calcium sulfate in zinc leaching with maghemite fine particles as carrier. As is shown in Figure 6 , the magnetic goethite-maghemite aggregates were separated effectively from calcium sulfate precipitates by magnetic drum separator, and 90% of Fe and Ca is respectively recovered in two corresponding

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An Overview of Recovery of Metals from Slags

A novel , modified roasting in CO–CO2 mixed gas and magnetic separation, was presented to recover iron from copper slag. The effects of various parameters such as dosage of flux (CaO ...

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Iron Recovery from Discarded Copper Slag in a RHF Direct ...

However, iron recovery rates in direct beneficiation and oxidative modification are too low, whereas energy consumption of the smelting reduction is too high. 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 ...

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magnetic separation techniques for zinc ncentration - MC ...

Magnetic separation of zinc lead . gravity and magnetic separation of lead and zinc slag material The processing of Beach Minerals by means of a InLine presents a challenge for modern gravity separation techniques of nonmagnetic beach minerals dictates that the process of writing off the capital Slag material contains significant amounts of ...

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Electromagnetic Separation of Copper Iron Sulphides

Mineral is treated carrying as much as 60 per cent. magnetic oxide and as low as 22 per cent. zinc ; after passage over the trommel separator the finished product assays 50 per cent. zinc and from 8 to 12 per cent. oxide of iron. The iron tailing carries from 4 to 8 per cent. zinc, mostly combined with the iron. With sizes over 14 mm. hand picking was found more efficient than the separator ...

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Recovery of Iron from Lead Slag with Coal-Based Direct ...

Iron recovery from a lead slag in Henan province was carried out with the technique of coal-based direct reduction followed by magnetic separation. Scanning electron microscopy (SEM) was used to investigate the transformation of iron-containing minerals and the particle size of metallic iron generated by coal reduction. The results showed that technique is feasible for iron recovery from the ...

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Iron Recovery from Discarded Copper Slag in a RHF Direct ...

By using DR followed by a magnetic separation process for iron recovery from copper slag, Yang obtained iron powder of 92.05% iron content with an iron recovery rate of 81.01%, and Wang obtained iron powder of 92.96% iron content with an iron recovery rate of 93.49%. Both of their tests have achieved good results. However, the above researches, which are technically feasible, have been

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