Recovery of Ultra-Fine Tungsten and Tin from Slimes Using Large-Scale SLon-2400 Centrifugal Separator

Tao, Xiong; Ren, Xiangjun; Xie, Miao; Rao, Yuhuan; Peng, Yongjun; Chen, Luzheng

doi:10.3390/min10080694

Cited by 4 publications

(4 citation statements)

References 11 publications

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“…Thus, the presence of low-magnetic and aluminosilicate iron-containing microspheres is confirmed, which agrees well with the results of earlier studies [22,48]. It is also worth noting that the sizes of extracted particles of valuable components with low values of magnetic susceptibility (less than 15 microns) are in good agreement with the work [49], in which the application of a high-gradient separator for sludge beneficiation is justified. The possibility of their extraction into the magnetic product using high-gradient magnetic separation is also proven.…”

Section: Resultssupporting

confidence: 90%

Increase in Recovery Efficiency of Iron-Containing Components from Ash and Slag Material (Coal Combustion Waste) by Magnetic Separation

Aleksandrova,

Nikolaeva,

Afanasova

et al. 2024

Minerals

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This article presents the results of research aimed at optimizing the process of recovery of valuable components from ash and slag waste from thermal power plants. In this work, both experimental and theoretical studies were carried out to substantiate the use of magnetic separation methods for ash and slag waste processing. Ash and slag wastes were chosen as an object of research due to the presence of valuable components such as iron, aluminum, etc., in them. The research results showed that the method of magnetic separation, including high-gradient magnetic separation, can be effectively used in ash and slag waste processing. As a result, the topology of a magnetic beneficiation technological scheme has been proposed to obtain high-value-added products such as high-magnetic iron minerals, low-magnetic iron minerals, and aluminosilicate microspheres. By using magnetic separation in a weak magnetic field, magnetic microspheres containing high-magnetic iron minerals associated with intermetallics, ranging in size from 20 to 80 µm, were recovered. In the second stage of magnetic separation (high-gradient magnetic separation), an iron ore product with an iron content of 50% with a recovery of 92.07% could be obtained. By using scanning electron microscopy, it was found that the main part of microspheres, which contain low-magnetic iron minerals and aluminosilicates, with sizes from 2 to 15 microns, was recovered in the magnetic fraction. This paper proposes a new approach to the enrichment of ash and slag materials using magnetic separation, which will increase the efficiency of their processing and make the process environmentally sustainable.

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Section: Resultssupporting

confidence: 90%

Increase in Recovery Efficiency of Iron-Containing Components from Ash and Slag Material (Coal Combustion Waste) by Magnetic Separation

Aleksandrova,

Nikolaeva,

Afanasova

et al. 2024

Minerals

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“…In particular, centrifugal concentrators can provide considerable centrifugal force that is dozens of times that of gravity, allowing ultrafine mineral particles to be recovered from slimes and tailings. For example, Knelson concentrators, Falcon concentrators, and the SLon centrifugal concentrator have been effectively used to recover fine minerals such as gold, tungsten, native copper, and hematite [13][14][15]. In the early 1960s, China successfully developed the Yunxi-type centrifugal concentrator, which can selectively enrich fine heavy minerals, for separating fine-grained tin, tungsten, and hematite.…”

Section: Introductionmentioning

confidence: 99%

Parameter Optimization of the Separation Process for Hematite and Quartz Mixture Minerals Based on a Cyclone Centrifugal Separator

Xie

Zeng

et al. 2023

Minerals

Self Cite

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The current centrifugal concentrators do not continuously concentrate heavy minerals of large mass weight—for example, in the processing of iron oxides. A cyclone centrifugal separator is a new type of beneficiation equipment that has been developed on the basis of the principles of centrifugal separation and hydrocyclones. In this study, a cyclone centrifugal separator was used for the beneficiation of a hematite–quartz mixture, and the separation effect under different operating conditions was analyzed. The results showed that various factors, such as the feeding concentration, the feeding pressure, and the number of fluidization holes in the separation cone, had a significant influence on the separation performance of the cyclone centrifugal separator. The single-factor separation test results showed that the appropriate operating conditions were a feeding concentration of 10%, a feeding pressure of 120 kPa, a 40-hole separation cone, a settling port pressure of 70 kPa, and an overflow port pressure of 50 kPa. The results of the open circuit separation test that was designed on the basis of the single-factor experiment showed that the concentrate grade of Fe in the hematite–quartz mixture, with 44.12% Fe, was 54.42% after beneficiation, indicating better beneficiation separation effects. This study provides a new approach for the beneficiation of a large number of difficult-to-select hematite ores in China, and can provide a reference for the further expansion and application of the cyclone centrifugal separator in the field of mineral processing.

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“…The equipment types of milk separators are diversified, including centrifugal separators and sedimentation separators. Different types of equipment have different working principles and separation effects, and appropriate equipment can be selected according to production requirements [5][6].…”

Section: Introductionmentioning

confidence: 99%

Influence of Rotating Speed on Pressure Distribution in the Working Process of Milk Separator

Wang,

He,

Tang

et al. 2023

Advances in Transdisciplinary Engineering

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The milk separator belongs to the disc separator, which is the key core equipment for dairy products processing. Its core functional component, the separation bowl, works at a rotating speed ranging from 7500 r/min to 12000 r/min, and structurally belongs to a vertical high-speed rotor with external suspension and external center of gravity. The thin-layer separation centrifugal flow field inside the separation bowl and the structural stress of the rotor are the key application basic theories in the design of the milk separator. The influence of rotating speed on the pressure distribution during the working process of milk separator is that the dynamic pressure simulation results of the flow field are distributed near the theoretical curve at all rotating speeds, and the simulation results are reasonable, especially the difference between the dynamic pressure distribution of the fluid in the disc channel and the theoretical value is very small. The research on the influence of rotating speed on pressure distribution in the working process of milk separator has very important theoretical value and application value for revealing the separation mechanism of milk fat, optimizing the structure design of separation bowl and developing new products.

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Recovery of Ultra-Fine Tungsten and Tin from Slimes Using Large-Scale SLon-2400 Centrifugal Separator

Cited by 4 publications

References 11 publications

Increase in Recovery Efficiency of Iron-Containing Components from Ash and Slag Material (Coal Combustion Waste) by Magnetic Separation

Increase in Recovery Efficiency of Iron-Containing Components from Ash and Slag Material (Coal Combustion Waste) by Magnetic Separation

Parameter Optimization of the Separation Process for Hematite and Quartz Mixture Minerals Based on a Cyclone Centrifugal Separator

Influence of Rotating Speed on Pressure Distribution in the Working Process of Milk Separator

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