Recovery of Indium from Hard Zinc Slag by Pressure …
In this study, hydrometallurgical processes involving pressure acid leaching and solvent extraction were developed to aid recovery of indium from zinc slag, which is produced in the imperial smelting process. Four different acid leaching methods were studied, namely atmospheric leaching, atmospheric leaching with KMnO4, roasting-atmospheric …
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Selective Recovery of Zinc from Metallurgical Waste …
The presence of ferrites gives the zinc slag-containing materials, in which they are present, magnetic properties, but their complex chemical (intermetallic …
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Magnetic Separation | SpringerLink
Magnetic separation is widely used. All materials with magnetism in the magnetic field can be treated by magnetic separation, which is the main method to treat iron ore. All lean magnetite ores need to remove gangue minerals such as quartz through weakly magnetic field magnetic separators to improve the iron grade of concentrate. …
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Review Valorization of lead and zinc slags for the production …
Lead-zinc slag can improve the durability and radiological properties of mortar and concrete mixes even for higher replacements and durability properties of SCC mixes for replacements up to 25%. Leaching, a major problem due to the dumping of lead-zinc slag, is effectively controlled when used to prepare mortar, concrete, geopolymer, …
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Preparation of Nano-ZnO Powders from Zinc Slag Oxidation …
Herein, a novel solvent-assisted approach is being proposed to recover Zn as nano-ZnO.powders from zinc slag oxidation dust (ZSOD). Choline chloride–urea–butyl alcohol deep eutectic solvent (ChCl–urea–BA DES) was used as an efficient solvent for selective leaching of Zn from the ZSOD, coupled with water precipitation and calcination, …
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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 …
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Optimization of magnetic separation process for iron
To improve the efficiency of iron recovery from steel slag and reduce the wear-and-tear on facilities, a new method was proposed by adding a secondary screen sizer to the magnetic separation process according to grain size distribution of magnetic iron (M-Fe) in the slag. The final recycling efficiency was evaluated by calculating the …
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Liberation and Enrichment of Metallic Iron from Reductively …
The reductively roasted copper slag with mean particle size of 4.76 μm was separated at different magnetic intensities.The results are shown in Fig. 1b. The Fe recovery, SiO 2 content, and SiO 2 recovery in the concentrate increase with magnetic intensity, whereas the Fe content shows a decreasing trend. The independent metallic …
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Magnetochemistry and Magnetic Separation | SpringerLink
where μ 0 is the permeability of free space and M is the volume magnetization. In the absence of an external magnetic medium, the H-field lines are identical to B-field lines outside a magnet (the stray field) and only differ by a factor μ 0, (B = μ 0 H); but inside they point in a different direction. B is solenoidal (∇⋅B = 0), meaning …
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~mill2022/sbm: sbm magnetic separation of lead and zinc slag …
sbm/sbm magnetic separation of lead and zinc slag material.md -rw-r--r-- 30.0 KiB
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Application of coal-based direct reduction-magnetic …
No magnetic separation mentioned: Zn and Pb volatilization ratios: 99.4 wt% (Li and Ma, 2018) In: Reduction at 1000 °C for 60 min, 30 wt% carbon, 13 wt% CaO: No magnetic separation mentioned: In volatilization rate: 98.2 wt% (Ma et al., 2017) Fe, …
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Steelmaking Slag Beneficiation by Magnetic Separator and …
The slags with particle size of -10 mm were enriched by the magnetic separator resulting and increase in Fe grade from 18% to 33%. The use of BOF slag in …
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Recovery of cobalt and zinc from the leaching solution of zinc …
A series of characterization of zinc slag have been carried out, including XRD and XRF. The results showed that the contents in slag of zinc and cobalt were 44.24% and 0.38%, respectively. And it is significant to recover the smelting slag. First, zinc slag was leached with sulfuric acid to obtain the leaching solution containing multiple ions.
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Iron Recovery from Discarded Copper Slag in a RHF Direct …
That is to say, the copper slag is a kind of costless raw material. Thanks to the rich zinc content in such copper slag, the same can also be recovered in the form of zinc oxide powder when the iron element is recovered. Therefore, copper slag with 40% Fe content is a better iron resource economically than conventional iron deposits.
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Separation and stabilization of arsenic in copper smelting …
DOI: 10.1016/J.JCLEPRO.2021.127797 Corpus ID: 236238411; Separation and stabilization of arsenic in copper smelting wastewater by zinc slag @article{Xiaoxu2021SeparationAS, title={Separation and stabilization of arsenic in copper smelting wastewater by zinc slag}, author={Duan Xiaoxu and Xuezhu Li and Li Yongkui …
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Separation and stabilization of arsenic in copper
The phase composition of zinc slag is more complicated, and its XRD is shown in Fig. 1b. Zinc slag is mainly composed of gehlenite [Ca 2 Al 2 SiO 7. Conclusion. This study proposes a strategy of using zinc slag to treat CSW from copper smelting. The Fe(Ⅱ) provided by the zinc slag as an in-situ iron donor is oxidized to Fe(Ⅲ) by H 2 O 2 ...
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(PDF) Separation of steelmaking slag with mechanical …
Magnetic separators process steelmaking slag in multiple layers for mass production and non-magnetic particles are attracted to a magnet roll by magnetic particles [1]. Therefore, precision of ...
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(PDF) An air-fluidized magnetic separator and its separation
In order to address the issue of magnetic agglomeration leading to poor magnetic separation efficiency and low activity enhancement, resulting in limited …
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Steelmaking Slag Beneficiation by Magnetic Separator and …
After BOF slag was oxidized at 1300 ℃ for 240 min and cooled in the furnace (1 ℃/min), the grade of magnetic slag obtained by magnetic separation had a grade of 40.26%, a recovery of 70.95% ...
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Recovered Carbon from Coal Gasification Fine Slag as Electrocatalyst
Then, such porous carbons are further utilized as air cathodes for a zinc–air battery and reach a power density of 88 mW cm −2 at the current density of 154.9 mA cm −2. All these results indicate that fine slag, a byproduct of the coal gasification industry, has a great potential to be reused as a high-value electrocatalyst and electrode ...
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Extraction and separation of zinc, lead, silver, and …
As the zinc in the bismuth refining slag existed mainly as zinc chloride, which was readily soluble in water, a water leaching was chosen to treat the slag first. 100 g ground slag (<0.15 mm) was leached at a liquid/solid ratio of 4:1 and a temperature of 25 °C for 2 h. The leaching liquor contained 4.5 g/dm. 3. Zn, 0.82 g/dm. 3. Pb, 0.2 g/dm. 3
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Magnetic Separation
Wastewater Treatment and Reuse. Y. Gong, D. Zhao, in Comprehensive Water Quality and Purification, 2014 3.11.2.5 Magnetic Separation. Magnetic separation is a process where a contaminant is first attached onto a magnetic carrier material (e.g., magnetite), and subsequently, the contaminant-laden carrier is separated under a magnetic field. The …
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An air-fluidized magnetic separator and its separation …
The presence of magnetic inert minerals (RO phase, Fe 3 O 4, Fe) in steel slag powder 13 enables the separation of these minerals from the slag to enhance its gelling properties and facilitate iron resource recovery, thereby improving the activity of steel slag powder. 14 However, during wet magnetic separation operations, hydrated active …
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Separation of Iron and Zinc Values from Blast Furnace
The roasting slag was separated by magnetic separation (350 mT), and the concentrate with the iron grade of 66.00%, the recovery rate of 85.54%, and the zinc grade of 0.15% was obtained under the ...
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Magnetization and Magnetic Separation | SpringerLink
First Online: 31 March 2023. 9 Accesses. Download reference work entry PDF. Magnetization and magnetic separation is a method of magnetic separation by enhancing the volume magnetism or surface magnetism of minerals. By changing the volume magnetism (volume magnetization) or surface magnetism (surface magnetization) of …
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Copper Recovery from a Zinc Smelting Slag
Using collector of ammonium aerofloat for roughing process of raw smelting slag tailings after magnetic separation, adopting open-circuit flotation technological flowsheet of …
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Recovery of Iron from Lead Slag with Coal-Based Direct …
Under the conditions of weight ratio of slag: coal: CaO as 50:15:5, the roasted temperature of 1250 °C for 45 min, and then two stage of grinding and twice magnetic separation, the metallic iron ...
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Mechanism and kinetics study on ultrasonic combined
The germanium-containing slag dust (GCSD) contains 49.65% zinc and 620.4 g/t germanium, and has a high recovery value. ... which was then placed in a thermostatic magnetic stirrer and heated to the selected temperature (50 ∼ 90 °C). Then, 30 g of GCSD (L/S:4 ∼ 8) was added to the flask, and a sufficient reaction was carried …
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Comprehensive recovery of zinc, iron and copper from copper slag …
In this study, a novel method to recover copper, zinc and iron from copper slag by SO 2 –O 2 roasting-leaching-magnetic separation was proposed. The effect of roasting experiment conditions were roasting temperature of 900 °C, holding time of 120 min, and φ SO2 (The volume fraction of SO 2 in the mixed gas of SO 2 and O 2) of …
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Recovery of iron from copper slag by deep reduction and magnetic …
Aiming at recovering iron from high-iron-content copper slag, this article introduced a combination technology of deep reduction and magnetic beneficiation, investigated the iron recovery efficiency and optimized the technical conditions. When coke powder with 86wt% fixed carbon was used as a reductant, iron was successfully …
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