The activating effect of carbon during sintering the limestone-kaolin mixture

ElDeeb, A.B.; Brichkin, V. N.; Поваров, В. Г.; Kurtenkov, R. V.

doi:10.17580/tsm.2020.07.02

Cited by 6 publications

(16 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The obtained results supplement and develop the theory and practice of metallurgical processes of synthesis of new materials (based on iron and other metals) with improved properties, and also contribute to the modern research of the scientific school of metallurgists of Mining Institute (now the University) in St. Petersburg [38][39][40][41][42][43][44], at the origins of which was academician N.S. Kurnakov [21,24,45,46].…”

Section: Resultsmentioning

confidence: 76%

Dispersed iron obtaining by the method of solid state hydride synthesis and the problem of hydrophobiсity of metal

Syrkov¹,

Prokopchuk²

2021

cisisr

View full text Add to dashboard Cite

The process of obtaining of a dispersed product based on metallic iron, containing a protective carbosiloxane film on the surface, has been investigated and implemented. The structure and composition of the metal product are characterized by modern physical methods, including X-ray phase and X-ray fluorescence analysis, XPS spectroscopy. The influence of the synthesis mechanism, the role of the metal-silicon chemical interaction in the surface layer on the water-repellent and anticorrosion properties of the obtained samples is considered. It was found that the heat resistance of the samples in air and their hydrophobicity, depending on the type of the reduced metal, increase in the order: nickel -copper -iron. It was shown that highly hydrophobic iron-based samples can be obtained by reduction from iron (II) oxide and Olenegorsk superconcentrate. The prospects of the synthesized powders and the method of their preparation for the creation of superhydrophobic materials are shown. A method for obtaining a metal product has been theoretically and experimentally substantiated, where the formation of a metal structure and its protection from an aggressive environment are carried out within a given volume on the same technological unit with a flow-through reactor.

show abstract

Section: Resultsmentioning

confidence: 76%

Dispersed iron obtaining by the method of solid state hydride synthesis and the problem of hydrophobiсity of metal

Syrkov¹,

Prokopchuk²

2021

cisisr

View full text Add to dashboard Cite

show abstract

“…Hence, the excessive pressure can maintain the transformation temperatures into lower limits with the increased amount of the carbon phase as indicated by Eqs. 3 -6 (Zhou et al, 2012;Yuan et al, 2018;ElDeeb et al, 2020b).…”

Section: Effect Of Charcoal Addition On Thermal Behaviormentioning

confidence: 99%

“…In the diffractogram of the charcoal free (0 %) sample, the peaks of the crystalline calcium aluminate phase (Ca 12 Al 14 O 33 ) appeared at 2θ = 14.70°, 22.50° and 23.22° (Zhang et al, 2015b) as well as the peaks of the crystalline aluminosilicate phase (Al 2 SiO 5 ) appeared at 2θ = 12.40°, 19.50° and 26.66° (ElDeeb et al, 2020b). It was obvious that the samples with charcoal additions (1 -4 %) under the same sintering conditions, the profile peaks of both the crystalline aluminosilicate (Al 2 SiO 5 ) and calcium aluminate (Ca 12 Al 14 O 33 ) phases were disappeared as they significantly transformed into an amorphous state even with the least charcoal content 1 % (Fig.…”

Section: Effect Of Charcoal Addition On Phase Transformation and Microstructurementioning

confidence: 99%

“…Actually, the sintering temperature was the main controlling factor in the phase transformation and microstructural changes that drove the self-disintegration process, and hence led to enhancing the alumina percent recovery significantly (ElDeeb et al, 2019;ElDeeb et al, 2020b). At the same optimum additive charcoal content 1.5 %, the resulting alumina percent recovery (APR) values showed a strong positive correlation with the sintering temperature (R 2 = 0.94), where the APR values increased gradually from 44.40 % (by the sintering under 1260 °С) up to 87.40 % (by the sintering under 1360 °С, Fig.…”

Section: Effect Of Charcoal Thermochemical Activation On Alumina Percent Recoverymentioning

confidence: 99%

“…2 and 5) with the resulting highly desirable fine self-disintegrated particles and the surface properties, all together led to an improved leachability and a higher alumina productivity. On the other hand, the decreasing of alumina percent recovery with an increasing of the additive charcoal by > 1.5 % can be attributed to the release of an excessive heat content with a more combusted amounts of the charcoal, which led to the formation of an undesirable stable mullite phase (Al 2 O 3 .SiO 2 ) from which alumina was difficulty extracted (Qiao et al, 2008;ElDeeb et al, 2020b).…”

Section: Eq 11mentioning

confidence: 99%

See 2 more Smart Citations

Enhanced alumina extraction from kaolin by thermochemical activation using charcoal

et al. 2021

View full text Add to dashboard Cite

show abstract

Metallurgical science in a virtual reality

Mikeshin¹

2022

tsm

View full text Add to dashboard Cite

Today, most scientific texts intended for publication are subject to strict requirements in terms of structure and presentation. Such requirements, together with the established traditions of writing papers, directly affect not only the choice of scientific language, but also the very thinking of technoscientists. The study of published scientific texts as rhetorical tools allows one to assess what and how technoscientists think, how they imagine their science. Russian metallurgical engineers papers in Russian and international high-level journals are used as the research material. These papers professionally tell us about problems of corrosion during oil transportation, management and control of silicon production, composite aluminum alloys, methods of processing kaolin ore, the use of red mud, the history of minting the first Soviet coins. The epistemological analysis of these technoscientific texts allows us to conclude that the considered scientific papers are characterized by a specific "objectivist" technoscientific discourse, deliberately free from many contexts. They create a special "humanless" "virtual reality", in which the influence and account of many factors of reality are excluded. The problem of the adequacy of such a discourse to modern technoscience, to its development and social interactions is posed.

show abstract

The activating effect of carbon during sintering the limestone-kaolin mixture

Cited by 6 publications

References 0 publications

Dispersed iron obtaining by the method of solid state hydride synthesis and the problem of hydrophobiсity of metal

Dispersed iron obtaining by the method of solid state hydride synthesis and the problem of hydrophobiсity of metal

Enhanced alumina extraction from kaolin by thermochemical activation using charcoal

Metallurgical science in a virtual reality

Contact Info

Product

Resources

About