Analysis of the Influence of Permanent Magnet Geometry on the Energy Efficiency of Electromechanical Systems

Леонов, С.В.; Zhiganov, A. N.; Kerbel, B. M.; Fedorov, Danil F.; Makaseev, Yu. N.; Kremlev, I. A.

doi:10.1007/s11182-016-0772-1

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…Rare-earth metals have unique properties and are widely used in various technology branches due to these properties [1][2][3][4][5][6][7][8]. An increase in the rare-earth metals consumption promotes the development of their production from industrial and secondary raw materials.…”

Section: Introductionmentioning

confidence: 99%

Sorption Extraction of Rare Earth Metals from Wet-Process Phosphoric Acid

Baltabekova

Kenzhaliyev

Lokhova

et al. 2021

ARFMTS

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When apatites and phosphorites are processed, up to 30% of rare earth metals are converted into wet-process phosphoric acid. Wet-process phosphoric acid from the phosphorite treatment process differs from apatite one by impurity composition, i.e. the iron content is by 3.5 times, and calcium is by 5.0 times more. The complex composition of the wet-process phosphoric acid from the phosphorite treatment process requires additional researches to select optimal ion exchangers and technological parameters of sorption. Various aspects of sorption have been studied to select the optimal ion exchangers and technological parameters, and technological modes for desorption of rare earth metals from a cation exchanger to obtain a concentrate of rare earth metals have been completed. The method enables to extract rare earth metals without changing the composition of commercial wet-process phosphoric acid directly in the production process of the enterprises engaged in the phosphorite treatment process.

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Section: Introductionmentioning

confidence: 99%

Sorption Extraction of Rare Earth Metals from Wet-Process Phosphoric Acid

Baltabekova

Kenzhaliyev

Lokhova

et al. 2021

ARFMTS

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“…In [7] main working principles of hybrid electromagnetic system are described and using of new nanocrystalline materials for better energy efficiency of such devices is proposed. A three-dimensional computer model of magnetic field is used for studying influence of geometry of permanent magnet over the energy efficiency of an electromechanical system in [8]. Basic theoretical principles and formulations related to electromagnetism and magnetic field are discussed in [9] and [10].…”

mentioning

confidence: 99%

Influence of the shape of the input pulses on the characteristics of hybrid electromagnetic system with magnetic flux modulation

Yatchev

Balabozov

Hinov

et al. 2021

Electrical Engineering & Electromechanics

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Introduction. Nowadays, the accelerated development of materials and technologies and the finding of new ones is a prerequisite for the improvement of well-known electromagnetic constructions used in various devices, as well as for the development of new ones. New construction of hybrid electromagnetic system with magnetic flux modulation (HEMSMM) is studied. The construction is composed of: ferromagnetic frame with air gaps, input and output coils and permanent magnets. Two input coils connected to the pulsed power supply are used to change the path of the generated by the permanent magnets constant magnetic flux. Input pulses with different shapes are applied to the input coils and signals in the output coils are obtained and compared. The main purpose of the work is to find the shape of the input pulses which leads to higher output power in comparison with the other shapes. Methods. Finite element method and COMSOL software is used for computer modelling of the proposed construction, where coupled electromagnetic field – electric circuit analysis is carried out. Results. A mathematical and numerical 3D model of new HEMSMM construction is realised and studied. The model allows to calculate and compare power efficiency of the studied device, when input pulses with different shapes are applied. Practical value. The developed computer model enables the study of the HEMSMM and other electromagnetic devices at different operating modes. It can be further improved and used in the search for optimal parameters of a particular electromagnetic device.

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“…РЗМ используются при создании новой высокотехнологичной военной техники и вооружений [2]. Разрабатываются энергоэффективные конструкции синхронного двигателя с постоянными магнитами, содержащими РЗМ, для электрических машин [3,4]. РЗМ находят широкое применение в оптике, солнечных батареях, конденсаторах, спецсплавах (сверхкрепкие, жаропрочные, коррозион-ностойкие сплавы), полупроводниках, атомной отрасли и т. д. Область применения РЗМ и редких металлов постоянно расширяется.…”

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Sorption rerecovery and concentration of rare-earth metals from extraction phosphoric acid. Review

Lokhova¹,

Naimanbayev²,

Baltabekova³

2018

KIMS/CUMR/MShKP

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This work is devoted to the investigation of the possibilities of processing oxidized copper ore and sulfide copper concentrate of the Aktogay deposit by pyrometallurgical methods at the operating metallurgical units of the largest copper producer in Kazakhstan, Kazakhmys Smelting Ltd. The chemical, phase compositions and thermal properties of the samples of the Aktogay ore and concentrate were investigated. To test the possibility of using oxidized copper ore of the Aktogay deposit as quartz flux for autogenous smelting in Vanyukov furnaces (VF) with copper sulphide concentrates laboratory experiments were carried out. They made it possible to establish that the replacement of quartz flux on the oxidized ore of the Aktogay deposit is entirely permissible in consideration of the satisfactory composition of slags and mattes obtained in the smelting, even when the content of silica in the ore is 64.56 %. With a higher content of silica in the ore, its use as a flux will be even more effective. The available capacities of the two Vanyukov furnaces are not sufficient for processing all available high-sulfur raw materials, including the Aktogay sulphide copper concentrate, using autogenous melting. Therefore, in the laboratory and in an industrial scale, a preliminary test was carried out on the possibility of processing a part of the copper poor and high-sulfur Aktogay concentrates on the electric furnaces of the Zhezkazgan Copper Smelting Plant (ZCS). The results of laboratory studies and preliminary industrial tests have shown the possibility of such processing with the production of mattes containing no less than 47 % of copper and suitable for converting on existing equipment of ZCS.

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Analysis of the Influence of Permanent Magnet Geometry on the Energy Efficiency of Electromechanical Systems

Cited by 4 publications

References 2 publications

Sorption Extraction of Rare Earth Metals from Wet-Process Phosphoric Acid

Sorption Extraction of Rare Earth Metals from Wet-Process Phosphoric Acid

Influence of the shape of the input pulses on the characteristics of hybrid electromagnetic system with magnetic flux modulation

Sorption rerecovery and concentration of rare-earth metals from extraction phosphoric acid. Review

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