Wyniki wyszukiwania - BazTech

1

Otrzymywanie tanich cieczy magnetycznych z odpadów przemysłowych

Kalajewa S., Morozow N., Stradornskij J., Makarow W., Szypilin A., Zacharowa I.

Ekologia i Technika

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2007

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R. 15, nr 3

85-89

PL

Przeprowadzono badania nad możliwością wykorzystania odpadów po oczyszczaniu ścieków z galwanizerni i odpadów po oczyszczaniu gazów kominowych w hutach metali zawierających związki żelaza. Stwierdzono, że możliwe jest wykorzystanie ich do produkcji cieczy magnetycznych, które mogą znaleźć zastosowanie w procesach sorpcji ropopochodnych rozlanych na powierzchni wody.

EN

Studies on utilization of wastes containing iron compounds which were produced in the processes of galvanic waste treatment and purification of chimney gases in steel plants were carried out. It was found that they were useful for production of magnetic liquids (ML) which could be applied for sorption of petroleum derivatives spilt on a surface of water.

2

Ultrasonic Determination of The Aggregate Sizes Distribution Function In Water-Based Magnetic Liquid

Hornowski T.

Molecular and Quantum Acoustics

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2005

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Vol. 26

97-103

EN

An external magnetic field applied to a magnetic fluid gives rise to spherical and chain-like clusters or aggregates. In the present paper the determination of the aggregate sizes distribution function using ultrasonic spectroscopy is described. The results of the measurements of ultrasonic attenuation in a water-based magnetic fluid in the frequency range 3.5-40 MHz for three temperatures are presented. The interpretation of the obtained results is given.

3

The Broadband Ultrasonic Absorption in the Water-Based Magnetic Liquid as a Function of the Magnetic Field Strength

Hornowski T.

Molecular and Quantum Acoustics

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2004

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Vol. 25

109-114

EN

The results of the broadband ultrasonic absorption in a water-based magnetic fluid EMG- 605 are presented. Experimental results are analyzed using concept of the resonance absorption of an ultrasonic wave in a magnetic fluid acted on by a magnetic field. The size of the clusters as a function of the magnetic field strength are determined.

4

Investigations of Magnetic Properties of Apg 513a Magnetic Fluid

Hornowski T., Skumiel A., Łabowski M.

Molecular and Quantum Acoustics

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2004

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Vol. 25

115-120

EN

Static magnetic properties of magnetic fluid APG 513A have been measured. The differential magnetic susceptibility was measured as a function of an external magnetic field in the range of 1-200 kA/m, parallel to the direction of the field. The data were analysed using the Langevin equation and taking into account polydispersity of a system. A lognormal function was used as to approximate the distribution function of the size of magnetic particles. On the basis of the least-square fit of the susceptibility data to the Langevin equation the parameters of the distribution function as well as macroscopic parameters of the ferrofluid such as the initial susceptibility, saturation magnetization and particle number density were obtained. In magneto-granulometric analysis of the ferrofluid the mean magnetic diameter and standard deviation of particles were obtained. The agreement between the susceptibility data and the Langevin equation predictions is very good, which suggests the lack of interactions between particles and the absence of agglomerates in the ferrofluid studied.

5

The Frequency Dependance of Ulrtadonic Attenuation in the Water-Based Magnetic Liquid in the Absence of a Magnetic Field

Hornowski T., Łabowski M., Skumiel A.

Molecular and Quantum Acoustics

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2003

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Vol. 24

41-46

EN

The measurements of ultrasonic attenuation in a water-based magnetic fluid EMG-605 as a function of frequency are presented. Experimental results are analyzed using two-phase model of magnetic liquid. A good agreement between experimental data and the predictions of theoretical model was obtained.