Modeling of Temperature Field Distribution in Mine Dumps with Spread Prediction

Macháček, Zdeněk; Hajovsky, Radovan

doi:10.5755/j01.eee.19.7.5179

Cited by 6 publications

(3 citation statements)

References 4 publications

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“…Another problem may be the high temperature of measured product which depends on the location of the sensing device in the industrial technology. The measured metal product can be measured in temperature up to about 800 °C [3], [4].…”

Section: Identification Aspects Of Embossed Alphanumeric Marking mentioning

confidence: 99%

Modern Sensor Technology for Alphanumeric Recognition in Metallurgy Industry

Mikolajek¹,

Macháček²,

Koziorek³

2014

ElAEE

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This paper presents the possibilities of modern sensor technology enables measurements of non-electrical physical values by using advanced technology to automatic recognition of alphanumeric marking. Research focuses on analyzing the usefulness of modern sensor technology for special cases in industrial automation for the steel industry. Development of alphanumeric marking recognition system is described with the sensor elements implementation especially the optical scanner for surface differences recognition and the thermo camera surface temperatures recognition. The described research is specialized for various methods that can be used for alphanumeric marks recognizing instead of the standard industrial cameras usage. Verification and Recognition of alphanumeric marking with regard to the applicability in industrial applications for segments detection is very important for actual research orientation.

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Section: Identification Aspects Of Embossed Alphanumeric Marking mentioning

confidence: 99%

Modern Sensor Technology for Alphanumeric Recognition in Metallurgy Industry

Mikolajek¹,

Macháček²,

Koziorek³

2014

ElAEE

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“…However, exogenic ignition, for example, from thunderstorms, lightning and/or the deposition of hot cinders, has also been reported as fire starters [6,9]. A range of papers present methods for objective detection/monitoring of underground fires [5][6][7][8], appraisal of the spontaneous heating susceptibility of the dumped tailings [4,10,11] and/or modelling the temperature field in the location with thermal activity [6,12]. The role of the oxygen with access to the firing space is often mentioned as a main factor proliferating the extent of the firing spot; on the other hand, much less attention is given to the content of combustible matters in the minestone that is limited to spreading/suppressing the fire within the dump.…”

Section: Introductionmentioning

confidence: 99%

The Limiting Content of Combustibles to Prevent Minestone from the Spreading of Fire

Taraba

Gřunděl²,

Zelenková

2023

Energies

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The limiting content of combustibles to spread/suppress the fire in the minestone of the coal tailing dump (gangue) was studied. This knowledge appears crucial mainly when deciding on the possible usage of minestone as fireproof material for engineering purposes. Theoretical analysis, laboratory experiments as well as scale (in situ) considerations were performed. In the laboratory, a model series of coal–mineral matter mixtures and six representative minestone samples of coal tailing dump (gangue) were investigated. The thermoanalytical (TG/DSC) method was used to evaluate the content of combustibles with their energetic equivalent, EEC (%). The EEC has been suggested as a proper way to quantify the content of combustibles in the samples. Based on the original combustion calorimetric test, an EEC value of 7–9% was found to be a limit between fireproof and fire spreading minestone in a laboratory, while only 2% of combustibles resulted as the limit from the theoretical analysis. On the other hand, respecting real conditions of thermally active dump (Heřmanice tailing coal dump), the laboratory limit of 7–9% of EEC was then assessed to shift to the value of about 10 ± 1% for practice.

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“…Machacek (Machacek, 2013) proposed the Magnetic Field Model, which takes the relevant person as an object in a magnetic field. The power by which the person moves forward is the magnetic field force and the related traveling control Page 6 of 41 A c c e p t e d M a n u s c r i p t 6 equation.…”

Section: Introductionmentioning

confidence: 99%