Preparation of magnetic steel-slag particle electrode and its
Since we can not select the best condition of particle electrodes preparation based on the results showed in Table 2, we just chose the better condition that listed in Table 2: content of steel slag 50%, content of pore-forming agent 10%, calcination temperature 1000 °C and calcination time 60 min. Furthermore, it can be observed in …
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, …
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 …
Highly selective dissolution and synchronous extraction of zinc …
Based on the stratification characteristics of [Hbet][Tf 2 N] and aqueous solution, the efficient separation of zinc and cobalt is achieved by the selective dissolution and synchronous extraction of zinc from zinc-cobalt slag by the [Hbet][Tf 2 N]-H 2 O system in the heating and cooling process. The recovery of zinc and regeneration of …
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 …
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% ...
An air-fluidized magnetic separator and its separation …
Primary magnetic separation tests on a steel slag fine powder material demonstrate that the air fluidized dry magnetic separator effectively separates inert …
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 …
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.
Mineralogical Reconstruction of Lead Smelter Slag for Zinc …
The lead smelter slag may be regarded as an important secondary resource, since tons of the slag containing 10 to 25% Zn, 3% Pb and other minor valuable elements are discharged every year by industries. It is difficult to economically justify the recovery of valuable metals (mainly zinc) using traditional technologies. In this study, mineralogical …
A novel process to upgrade the copper slag by direct …
An innovative technology for direct reduction-magnetic separation with the addition of Na 2 CO 3 and CaO was studied to upgrade copper slag assaying 40.33% …
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
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 ...
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 ...
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 …
(PDF) Semi-Smelting Reduction and Magnetic Separation …
slag can be obtained in a short time through a semi-smelting reduction and magnetic separation process. The maximum particle size of iron nugget is about 15 mm, and the recovery rate of the iron
~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
Mineralogical Reconstruction of Lead Smelter Slag for Zinc …
The flotation tests performed indicated that zinc sulfides produced could be separated from the treated slag. The zinc grade increased from 13.63 to 32.76% and a total zinc …
(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 ...
(PDF) An air-fluidized magnetic separator and its separation
The iron grade in the magnetic products reaches 21.81%, which is 6.88% higher than that of the original steel slag, while the iron grade in non-magnetic products decreases to 11.93%, representing ...
magnetic separation lead and zinc slag material technology
magnetic separation of iron from zinc slag. Probing Study on Separating Pb, Zn, and Fe from Lead Slag (1) The process of coalbased direct reduction followed by magnetic separation was conducted to extract metallic iron and separate Pb and Zn from lead slag Metallic iron powder with 9373% total iron and recovery rate of 8032% was obtained …
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 …
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, …
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 …
Zinc oxide in alkali-activated slag (AAS): retardation …
Request PDF | On Mar 1, 2023, Jiawei Tan and others published Zinc oxide in alkali-activated slag (AAS): retardation mechanism, reaction kinetics and immobilization | Find, read and cite all the ...
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 …
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.
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 ...
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 …
Molecules | Free Full-Text | Selective Recovery of Zinc from
The presence of ferrites gives the zinc slag-containing materials, in which they are present, magnetic properties, but their complex chemical (intermetallic …