Magnetic separation was carried out with a magnetic separator, as shown in Figure 3 E. The magnetic separator can generate a strong magnetic field at the middle position of the magnetic separator tube, and the maximum magnetic field intensity is 500 mT. Metallized pellets obtained by pre-reduction were ground to a particle size of less …
The magnetic fraction obtained during the separation process is a mixture of diverse magnetic materials, not only pure iron. Iron oxides in slag (FeO and Fe3O4) are also …
magnetic separation has proved to be an op ti mal method to separate and recover iron from steel slag. After magnetic separation, the recovered magnetic iron (M-Fe) particles can be fed back to BOF, E AF or sintering plants for blast furnaces, depending on their grain size and Fe gradel' ", Moreover, during
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 …
The multi-stage wet weak magnetic separation method is suitable for steel slag, with a best magnetic separation intensity of 100 mT in the laboratory range and a …
A magnetic separator is a type of magnet used to remove impurities and other magnetic materials from metal in a production line. (+44) 203 318 75 73. ... as well as steel filings from metal processing material and iron particles. Remove magnetic like gold concentrates, because it allows gold to recover much more easily.
Slag is the by-product of iron- and steelmaking processes. Normally, around half to one tonne of slag would be generated for yielding one tonne of rolled iron or steel (Lobato et al. 2015).It was reported that the world steel production was 1.9 billion tonnes in 2016, which suggested that at least around 1 billion tonnes of slag is produced during …
A magnetic product containing about 57.9wt% iron was obtained from the magnetic separation under a magnetic field strength of 100 mT. Download to read the full chapter text. ... Ni Wen, et al. Experimental research of deep reduction and magnetic separation process of a high-iron copper slag [J]. Metal Mine, 2012(11): 141–144. Google Scholar
Integrated iron and steel plants generate large amounts of metallurgical slag, which usually contains some quantity of metals or mixtures of oxides that could be treated to be recycled in various applications. ... steelwork slag obtained from the Kardemir integrated iron and steel works, Karabuk, Turkey is used. A drum magnetic separator system ...
The utilization of this air-fluidized magnetic separator for primary separation of steel slag powder can enhance its iron grade from 14.93% to 21.81%, while also reducing the iron grade in non-magnetic …
DOI: 10.1016/S1006-706X(17)30023-7 Corpus ID: 136316934; Optimization of magnetic separation process for iron recovery from steel slag @article{Lan2017OptimizationOM, title={Optimization of magnetic separation process for iron recovery from steel slag}, author={Yuanpei Lan and Qing-cai Liu and Fei Meng and De-liang Niu and Heng Zhao}, …
3.2 Crushing and Magnetic Separation Steelmaking slag includes 10% to 40 % iron metal which can be separated for different purposes. Iron can be recovered and used as a substitute for scrap iron, iron can be segregated for effective use of slag for applications where iron would act as an impurity. For these reasons the slag is crushed and iron ...
Iron grain growth during deep reduction roasting is important for iron enrichment from copper slag (CS) through magnetic separation. In this work, a novel method of additive-free activation roasting, including oxidation and subsequent reduction roasting, was proposed to increase the iron grain size, then the iron was extracted by magnetic …
The study of beneficiation indicators of the magnetic separator was carried out using iron ore of the Bapy deposit, which is mono-mineral magnetite. For the study, mixtures of the minus 0.1 mm class were selected with the iron content α = 50% and α = 40%. ... Dry magnetic separation technology for the recovery of iron minerals in fine-grained ...
Direct reduction refers to the process of reducing iron minerals in copper slag to metallic iron particles below the melting temperature of copper slag [].Using direct reduction–magnetic separation technology to recover iron resources in copper slag has fair recovery effect and short reaction time, which is the development trend of …
Steel slag can separate inert minerals by the mineral separation method and prevent the hydration of active minerals caused by wet magnetic separation. In order to solve the problems of low specific magnetic susceptibility, small grain size, and difficult separation of inert minerals in steel slag, fluidized dry magnetic network separation …
The multi-stage wet weak magnetic separation method is suitable for steel slag, with a best magnetic separation intensity of 100 mT in the laboratory range and a single magnetic separation time of ...
Subsequent increase in temperature to 1200°C improves the extraction of iron. In the indirect reduction of slag at temperatures above its melting point, metallic iron is mainly concentrated at the outer surface of the product, forming large inclusions that are easily extracted by magnetic separation. An expedient approach is to reduce laminar ...
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% ...
DOI: 10.1179/1879139512Y.0000000055 Corpus ID: 135586049; Recovery of iron from waste slag of pyrite processing using reduction roasting magnetic separation method @article{Zhang2013RecoveryOI, title={Recovery of iron from waste slag of pyrite processing using reduction roasting magnetic separation method}, author={G. F. …
Mineral process wastes, such as metallurgical slags nowadays, are of significant metals and materials resources in the circular economy. The usability of iron-making slag is well established; however, steel slag still needs to be utilized due to various physicochemical constraints. In this context, we have reviewed the global steel slag …
Approximately 2.0–3.0 t of copper slag (CS) containing 35%–45% iron is generated for every ton of copper produced during the pyrometallurgical process from copper concentrate. Therefore, the recovery of iron from CS utilizes a valuable metal and alleviates the environmental stress caused by stockpile. In this paper, a new method has …
The combination of Low and High Intensity Magnetic Separation (LIMS and HIMS) of ground LD slag at 63 μm in wet process may recover ferromagnetic particles (iron oxides) at LIMS and paramagnetic ...
Using the developed process, a magnetic product containing more than 65 wt.% iron was obtained from magnetic separation under a magnetic field strength of 0.03 T for the waste copper slag treated ...
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% Fe total and 0.65% Cu. It is difficult to recover iron and copper from the slag by direct reduction since the iron mainly occurs in fayalite and the copper exists in copper sulfide.
1. Introduction. Steel slag is the main solid waste generated in the steel-making process, accounting for 15 to 20% of crude steel output [1].China's crude steel output in 2021 was 1.035 billion tons [2], more than half of the global crude steel output (1.9505 billion tons) [3], and the steel slag output exceeded 120 million tons.In contrast, …
The effective separation of iron and titanium slag could be realized by melting metallized pellets at 1550°C for 60 min with the addition of 1% CaO (basicity of 1.1) and 2% graphite powder. The small iron particles embedded in the slag could be removed by fine grinding and magnetic separation process. The grade of TiO2 in the obtained …
In BOF, the major components of slag are metallic iron, CaO, SiO 2, Fe 2 O 3, FeO, MgO and MnO and manganosite, Mn–monticellite, Mn–cordierite, glass, and ... The magnetic separation method is used for separating metallic iron and iron minerals from steel slag. Commonly used magnetic machines are the cross-belt magnetic separator, …
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 …
More importantly, a relatively low pre-reduction temperature and selection of magnetic separation process were found to be more beneficial for chromium enrichment in slag; the highest chromium ...
slag iron with a new roller magnetic separator. In this paper, we present a self-developed new mu- lti roller permanent magnetic separator, tailored to the physical characteristics of fine-grained steel slag. After separation, calculation of iron grade and recovery through titration experiment were performed so as to evaluate advantages and
Primary magnetic separation tests on a steel slag fine powder material demonstrate that the air fluidized dry magnetic separator effectively separates inert minerals from active minerals in the steel slag powder. The iron grade in the magnetic products reaches 21.81%, which is 6.88% higher than that of the original steel slag, …
This study explored the recovery of valuable metal elements in the lead smelting water-quenching slag using the method of "roasting–grinding–magnetic separation" at a roasting temperature of 1250 °C, coal dosage of 12.5%, roasting time of 90 min, and grinding time of 45 min. An iron concentrate with a grade of 93.61% and a …
Currently, the majority of copper tailings are not effectively developed. Worldwide, large amounts of copper tailings generated from copper production are continuously dumped, posing a potential environmental threat. Herein, the recovery of iron from copper tailings via low-temperature direct reduction and magnetic separation was …
