Reaction of soda–lime–silica glass melt with water vapour at melting temperatures

Vernerová, Miroslava; Kloužek, Jaroslav; Nemec, Lubomir

doi:10.1016/j.jnoncrysol.2015.02.020

Cited by 15 publications

(22 citation statements)

References 4 publications

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“…Reactions of sodium sulphate with carbon and with carbon monoxide are even more complicated, for example they are summarized in articles [11,14,30,31] The reduction of sulphate occurs in the early melting stages, in the range of 650-1000°C. Both, C (6) and CO (7) may act as a reducing agent [26].…”

Section: Sulphatesmentioning

confidence: 99%

“…This reaction may also result in the creation of two different glass layers, oxidized ones (sulphate containing) and reduced ones (sulphide containing). Their interaction generates free SO 2 gas which results in fine seeds present in the final glass [22], [30].…”

Section: Sulphatesmentioning

confidence: 99%

“…A number of different explanations have been proposed by several authors [22,[30][31][32]. Sulphates are soluble in water and therefore the moisture has a impact on glass redox.…”

Section: Sulphatesmentioning

confidence: 99%

“…In [30], authors tracked down the most famous mechanism of reaction (21) between sulphate ions and water vapour, where the sulphate ions in the glass melt directly react with water vapour.…”

Section: Sulphatesmentioning

confidence: 99%

“…• sodium sulphate and other fining agents react with other batch components during the initial stages of glass melting and produce new chemical compounds, including gases, depending on the glass batch composition, oxidation-reduction state of the melt and atmosphere above the melt [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35],…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Influence of Fining Agents on Glass Melting: A Review, Part 1

Hujova¹

2017

Ceramics - Silikaty

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Section: Sulphatesmentioning

confidence: 99%

Section: Sulphatesmentioning

confidence: 99%

“…A number of different explanations have been proposed by several authors [22,[30][31][32]. Sulphates are soluble in water and therefore the moisture has a impact on glass redox.…”

Section: Sulphatesmentioning

confidence: 99%

Section: Sulphatesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Influence of Fining Agents on Glass Melting: A Review, Part 1

Hujova¹

2017

Ceramics - Silikaty

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Melting behavior of sulfur-bearing silicate–phosphate glass batches

Sułowska

Szumera

Madej

et al. 2022

J Therm Anal Calorim

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The main purpose of the research was to explain the differences between nominal and actual chemical compositions of silicate-phosphate glasses in the SiO2-P2O5-K2O-MgO-SO3 system. The actual compositions of the materials were determined with X-ray fluorescence (XRF) analyses. Changes in the chemical composition were explained by examining the melting processes for selected glass batches with differential scanning calorimetry-thermogravimetry-related gas analysis by mass spectrometry (DSC-TG-EGA (MS)) and high-temperature X-ray diffraction (HT-XRD). It was found that changes in the chemical composition of the sulfur-bearing glasses were associated with the release of gaseous products. The main gases released during thermal decomposition of the selected glass batch were water vapor, carbon dioxide, carbon monoxide, and ammonia. Since these glasses have potential for use as glassy fertilizers, there is no doubt that the present study is important from an environmental point of view.

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Experimental Synthesis of Coloured Soda-lime-silica (SLS) Glasses using Untreated Silica Sand of Shankargarh Area (Prayagraj District, Uttar Pradesh, India) and its Ramifications

Singh

Rajak

Pati

et al. 2022

Journal of the Geological Society of India

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The physical, mechanical and chemical processing of silica sand, the main ingredient of silicate glass, are routinely carried out in glass and ceramic industries worldwide to enhance the silica content and to reduce the concentration of ferromagnesian impurities. The processing of silica sand prior to glass synthesis generally involves washing with water, physical screening (size and magnetic separation) and chemical treatments. The silica sand mining, in parts of Prayagraj (earlier known as Allahabad) district, Uttar Pradesh, is continuing for more than six decades and yet meager peer-reviewed published scientific data is available hitherto. On the other hand, the continued rampant water cleaning of silica sand for more than six decades has led to the accumulation of toxic sludge in the vicinity and also causing ground water depletion in the area. In order to find an amicable balance amongst silica sand processing, ground water depletion and environmental degradation, an attempt has been made to use untreated/raw silica sand of Prayagraj district, mainly from the Shankargarh area, to synthesize soda-lime-silica (SLS) glass. Following this objective, thirty five silica sand samples are collected from different washeries and grouped into seven classes based on their magnetic susceptibility values (30.23 to -0.71 x 10-8 m3kg-1). Representative silica sand samples from these seven groups are mixed with sodium carbonate (Na2CO3) and calcium carbonate (CaCO3) in a ratio of 75:15:10 and melted at 1300°C under one atmospheric pressure for a run duration of 90 minutes. Transparent to translucent SLS glasses of various hues and variable refractive indices (1.504 - 1.547) are formed. The glasses, thus analyzed by the electron probe micro analyzer (EPMA), comprise SiO2 (80.56 - 85.79 wt%), Na2O (9.70 - 12.69 wt%), CaO (4.80 - 6.51 wt%),Al2O3 (0.51 - 1.46 wt%),FeOT (0.15 - 0.95 wt%) and TiO2 (0.12 - 0.29 wt%), similar to the commercial SLS glasses manufactured worldwide. The present study suggests that the raw silica sand from Shankargarh area can be used to synthesize coloured SLS glasses even without washing with water and as a consequence the water resources and geo-environment of the area shall remain protected from further degradation.

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Reaction of soda–lime–silica glass melt with water vapour at melting temperatures

Cited by 15 publications

References 4 publications

Influence of Fining Agents on Glass Melting: A Review, Part 1

Influence of Fining Agents on Glass Melting: A Review, Part 1

Melting behavior of sulfur-bearing silicate–phosphate glass batches

Experimental Synthesis of Coloured Soda-lime-silica (SLS) Glasses using Untreated Silica Sand of Shankargarh Area (Prayagraj District, Uttar Pradesh, India) and its Ramifications

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