Effect of the Temperature Treatment of Quartzite on the Lining Resistance of Commercial-Frequency Induction Crucible Furnaces

Кукарцев, В. В.; Kukartsev, A. V.

doi:10.1007/s11148-018-0216-2

Cited by 13 publications

(9 citation statements)

References 4 publications

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Section: Introductionmentioning

confidence: 99%

“…The main difference was the elimination of tridymite for pure silica (the number of impurities was not more than 0.01%) [4,6,32]. His diagram, as well as the research of others, revealed that the first transformation of quartz was cristobalite [32][33][34]. Microscopic studies have also shown that the transformation of quartz into cristobalite occurs at the surface of the grains, in large grains (2-3 mm), and along cracks formed during heat treatment.…”

Section: Introductionmentioning

confidence: 99%

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X-ray Diffraction Phase Analysis of Changes in the Lattice of Pervouralsk Quartzite upon Heating

et al. 2022

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At present, quartzite is widely used across many industries. The properties of quartzite significantly affect the technology used during the preparation of the raw materials as well as the technology used for manufacturing the final product, which may be intended for further operation at different temperatures. The purpose of the study was to create a scheme for the transformation of quartzite that would describe the changes in the parameters of its lattice parameter upon heating and would offer guidance regarding the drying technology and technology required to obtain tridymite. A Bruker D8 Advance diffractometer was used to study changes in the phase composition of quartzite at the temperatures of 200, 400, 600, 879, 1000, 1200, 1470, and 1550 °C. A detailed scheme of transformations of PKMVI-1 quartzite with a SiO2 content of at least 97.5% at normal pressure was proposed for crystalline modifications formed during its heating. As a result of this research, the changes in the parameters of the lattice parameter—such as the average interplanar distance davg, the volume of the unit cell Vavg, the density of the unit cell Davg, and the molecular weight Mavg—were established.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

X-ray Diffraction Phase Analysis of Changes in the Lattice of Pervouralsk Quartzite upon Heating

et al. 2022

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“…However, the parameters of the crystal lattice, which influence its changes dur the action of temperature mode d 1 melting, also refer to the interdimensional distan Similar processes should occur in quartzite, which is used for the manufacture of the furnace lining of ICFs and influences its durability [8][9][10][11][12]. The authors of [13] established the changes in the size of the quartzite crystal lattice, density of the elementary cell, and polymorphic transformations, which occurred under the following conditions:…”

mentioning

confidence: 99%

“…However, the parameters of the crystal lattice, which influence its changes during the action of temperature mode d 1 melting, also refer to the interdimensional distances, which also affects the stability of the lining [14]. The interdimensional distance is the d 1 value, a multiple of the distance between the nearest identical planes of atoms (ions) in the crystal, and indicates its health (Figure 3).…”

mentioning

confidence: 99%

“…The moisture present in the original quartzite and the nature of its further condition after drying and sintering of the lining [16][17][18][19][20][21][22][23][24][25] are also influential. which also affects the stability of the lining [14]. The interdimensional distance is the d 1 value, a multiple of the distance between the nearest identical planes of atoms (ions) in the crystal, and indicates its health (Figure 3).…”

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confidence: 99%

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Influence of Temperature Regimes of Synthetic Iron Smelting on Casting Production Efficiency

Trunova

Кукарцев

Tynchenko

et al. 2023

Metals

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The purpose of the foundry is to provide the consumer with blanks for general machine-building (special) purposes which are as close as possible to the size of the future part in full compliance with the requirements. The competitiveness of these products is primarily dependent on the use of efficient and reliable smelting equipment which meets the necessary cost. The replacement of high-value ironworks and ironworks iron with steel scrap using induction melting furnaces (ICFs) reduces the cost of producing synthetic cast iron. However, this results in temperatures greater than 1500 °C, reduced lining stability and increased downtime of the smelter. As a result of the research carried out, a technology for the use of quartzite is proposed. Thereby, the purpose of this work is to establish temperature regimes for the smelting of synthetic pig iron, allowing the use in metal filling up to 70–90% of steel scrap; this leads to a reduction in the cost of purchasing bulk materials (depending on the brand of cast iron) up to 50% and, thus, increases the efficiency of synthetic cast iron smelting and castings production in general. After removal of the original moisture and the subsequent sintering of the manufactured lining, it provides the possibility of melting using the melting temperatures 1550–1600 °C. It increases the efficiency of the operation of the melting furnaces and eliminates the consumption of the ironworks and the melting of the cast iron in the blast furnace, as well as the cost of the lost alloy. As a result, metallurgical production will be able to reduce the volume of production and supply of cast iron for ironworks, which will improve their environmental situation during the production and processing of necessary raw materials.

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Changes in Pervoural Quartzite Crystal Lattice on Heating from 25 to 600°C

Abkaryan¹,

Temnykh²,

Кукарцев³

et al. 2021

Refract Ind Ceram

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Effect of the Temperature Treatment of Quartzite on the Lining Resistance of Commercial-Frequency Induction Crucible Furnaces

Cited by 13 publications

References 4 publications

X-ray Diffraction Phase Analysis of Changes in the Lattice of Pervouralsk Quartzite upon Heating

X-ray Diffraction Phase Analysis of Changes in the Lattice of Pervouralsk Quartzite upon Heating

Influence of Temperature Regimes of Synthetic Iron Smelting on Casting Production Efficiency

Changes in Pervoural Quartzite Crystal Lattice on Heating from 25 to 600°C

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