An air-fluidized magnetic separator and its separation performance for steel slag

In order to address the issue of magnetic agglomeration leading to poor magnetic separation efficiency and low activity enhancement, resulting in limited utilization of steel slag fine powder material, this study proposes a novel dry magnetic separator with air fluidization as the feeding method. Th...

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Bibliographic Details
Published in:AIP advances 2024-03, Vol.14 (3), p.035302-035302-8
Main Authors: Hou, Xinkai, Wu, Shaosong, Wang, Xiangfeng, Xi, Zhentong, Sun, Jiaoyang
Format: Article
Language:English
Subjects:
Field strength
Fluidizing
Magnetic properties
Magnetic separation
Magnetic separators
Minerals
Slag
Steel
Suction
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Summary:In order to address the issue of magnetic agglomeration leading to poor magnetic separation efficiency and low activity enhancement, resulting in limited utilization of steel slag fine powder material, this study proposes a novel dry magnetic separator with air fluidization as the feeding method. The new separator incorporates adjustable magnetic field strength based on the material’s magnetic properties, enabling individual particle separation through a magnetic mesh while simultaneously enhancing mechanical and ultrasonic composite vibration. In addition, it enhances competitiveness by incorporating negative pressure suction. 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, while the iron grade in non-magnetic products decreases to 11.93%, representing a 3% reduction compared to the original steel slag composition. Further sweeping and selection processes are expected to further improve these results, ultimately achieving effective utilization of steel slag.
ISSN:2158-3226
2158-3226
DOI:10.1063/5.0190730