An investigation of the possibility of melting basalt using microwave energy

Мамонтов, А. В.; Nefedov, V. N.; Tuv, Alexander L.; Yazykov, D. A.

doi:10.1007/s11018-012-0076-y

Cited by 3 publications

(1 citation statement)

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“…Microwave-heating effects in basalts, such as melting, cracking and crushing 6–12 , have been studied in various contexts mainly related to mining and construction applications. The thermal-runaway effect in basalt 5,9 leads to a hotspot formation and melt inside the stone 6,9,10 , as illustrated in Fig.…”

Section: Introductionmentioning

confidence: 99%

Localized microwave-heating (LMH) of basalt – Lava, dusty-plasma, and ball-lightning ejection by a “miniature volcano”

Jerby

Shoshani

2019

Sci Rep

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This paper presents various phenomena obtained by localized microwave-heating (LMH) of basalt, including effects of inner core melting, lava eruption and flow (from the molten core outside), plasma ejection from basalt (in forms of fire-column and ball-lightning), and effusion of dust (deposited as powder by the plasma). The experiments are conducted by irradiating a basalt stone (~30-cm3 volume, either naturally shaped or cut to a cubic brick) in a microwave cavity, fed by an adaptively-matched magnetron (~1 kW at 2.45 GHz). Effects of LMH and thermal-runaway instability in basalt are observed and compared to theory. Various in- and ex-situ diagnostics are used in order to characterize the dusty-plasma observed and its nanoparticle products. The resemblance of the experimental phenomena obtained in small laboratory scale to gigantic volcanic phenomena in nature is noticed, and its potential relevance to further volcanic studies is discussed. In particular, we show that LMH could be instrumental for laboratory demonstrations and simulations of miniature-volcano effects, such as lava flows, formation of volcanic glass (obsidian), eruption of dusty-plasma and volcanic ash, and ejection of ball lightning. These findings might be significant as well for various applications, such as drilling and mining, microwave-induced breakdown spectroscopy (MIBS), mineral extraction, and powder production directly from basalts.

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Section: Introductionmentioning

confidence: 99%

Localized microwave-heating (LMH) of basalt – Lava, dusty-plasma, and ball-lightning ejection by a “miniature volcano”

Jerby

Shoshani

2019

Sci Rep

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Hard Rock Absorption Measurements in the W-Band

Shteinman,

Anker,

Einat

2024

J Infrared Milli Terahz Waves

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Extraction of zinc from metallurgical waste using non-conventional energy sources

Yur’ev,

Dudko

2023

Černaâ metallurgiâ. Bûlletenʹ naučno-tehničeskoj informacii

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Laboratory studies were carried out on samples prepared from the waste of the Nizhny Tagil Iron and Steel Works (NTMK) for the sublimation of zinc from them using non-traditional energy sources in the form of microwave fields. The study of physical and chemical processes was carried out, and a kinetic analysis was performed during heating of pellets, pellets and non-lumped charge from the waste of the NTMK plant in microwave fields in a wide temperature range. Recommendations are offered to accelerate the processes considered and to increase temperatures in relation to real technological parameters. A method for processing waste without pelletizing is proposed for industrial implementation, which is associated with the lowest capital costs. Experiments were carried out on heating pellets in a tubular electric resistance furnace, which made it possible to determine the dependence of the degree of zinc removal from pellets on the maximum heating temperature. Recommendations are given to intensify the process of heating the materials under study and to increase the temperature to a value that allows complete sublimation of zinc. The scheme of a conveyor unit with the use of a metal heat-resistant belt, consisting of two technological zones and allowing to carry out zinc sublimation from the unburnt charge. Approximate calculations were carried out, which made it possible to determine the temperature range in which zinc is sublimated and iron is metallized, as well as the specific power con-sumption and the useful power of the microwave generator. The sequence of technological operations and equipment necessary for the organization of production for the processing of zinc-containing dusts using microwave energy is con-sidered. The results obtained in the work are of particular interest for technologists and specialists involved in the pro-cessing of secondary waste at ferrous metallurgy enterprises. They can also be used in the development of new technol-ogies and installations for waste disposal and substantiation of the optimal modes of their operation, providing a high degree of extraction of valuable components with minimal energy costs.

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An investigation of the possibility of melting basalt using microwave energy

Cited by 3 publications

References 0 publications

Localized microwave-heating (LMH) of basalt – Lava, dusty-plasma, and ball-lightning ejection by a “miniature volcano”

Localized microwave-heating (LMH) of basalt – Lava, dusty-plasma, and ball-lightning ejection by a “miniature volcano”

Hard Rock Absorption Measurements in the W-Band

Extraction of zinc from metallurgical waste using non-conventional energy sources

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