Thermal analysis of the glass batch with a higher content of raw materials substitution based on selected fining agents

Kuśnierz, Anna; Środa, Marcin; Kosmal, Magda; Pichniarczyk, P.

doi:10.1007/s10973-017-6450-x

Cited by 4 publications

(3 citation statements)

References 5 publications

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“…This can initiate endothermic reaction (650℃ to 660℃) of sand (SiO2) with sodium carbonate (Na2CO3) and then form Na2SiO3 and CO2. The results corresponded to the previous work by Kusnierz et al [16]. By further increasing temperature, two-step decomposition of dolomite was found on endothermic peak for both STD and D2 mixture at 717℃ and 817℃.…”

Section: Reaction Of the Exhausted Dust Content In Glass Batchsupporting

confidence: 91%

Recycling of exhausted dust from regenerator of glass furnace in glass batch melting

et al. 2022

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In soda-lime glass manufacturing, evaporation of volatile compounds from glass melt is the origin of the dust emission from glass tank furnace. The exhausted dust then is deposited on the regenerator and is needed to be removed. Thus, this study focuses on using the dust from melting glass in glass production. The glass batches were prepared from 0 wt% to 10 wt% of the exhausted dust from soda-lime glass production as a substitution of the total raw materials. The analysis of phase and chemical composition of the dust by x-ray powder diffraction (XRD) and x-ray fluorescence technique (XRF) indicated that it consisted mainly sodium sulphate. Thermal analysis (TG/DSC) revealed that the addition of exhausted dust reduced the temperature of the melting reaction of the glass batches. The optimum amount of the exhausted dust, which made it possible to obtain the glass with the lowest number of remaining bubbles, was 2 wt%. From CIE lab and dilatometry results revealed that up to 2 wt% replacement of total raw materials by the exhausted dust in the glass batch did not affect the glass color, thermal expansion coefficient, glass transition temperature and dilatometric softening point of glass samples.

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Section: Reaction Of the Exhausted Dust Content In Glass Batchsupporting

confidence: 91%

Recycling of exhausted dust from regenerator of glass furnace in glass batch melting

et al. 2022

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“…This has led us to propose the use of Sb 2 O 3 as a reducing agent in the fabrication of M x WO 3 -doped bulk glass in the present study. On top of acting as a reducing agent, Sb 2 O 3 is a common clarifying agent in the glass fabrication process because it can remove bubbles in glass melts. , This clarifying effect is due to the oxidation of Sb 2 O 3 into Sb 2 O 5 when temperature is raised to 700 °C, and then O 2 is released when Sb 2 O 5 is decomposed back into Sb 2 O 3 when the temperature is raised to above 1175 °C . Oxygen rises through the glass melts and squeezes out smaller bubbles, which would be otherwise sealed inside the bulk glass after cooling …”

Section: Introductionmentioning

confidence: 99%

Doping Sodium Tungsten Bronze-Like (Na₅W₁₄O₄₄) Near-Infrared Shielding Functional Units in Bulk Borosilicate Glasses for Energy-Saving Window Applications

Yang

Xia

et al. 2022

ACS Appl. Mater. Interfaces

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Tungsten bronze is an effective near-infrared (NIR) shielding material for fabricating energy-saving smart windows. While high-performing NIR-shielding glasses can be fabricated by coating a tungsten bronze film on window glasses, these glasses suffer a short lifespan due to the adhesion and degeneration of film. In this work, we show that tungsten bronze-like material Na5W14O44 can be distributed in the bulk glass matrix during the facile melt-quenching glass fabrication process under an air atmosphere, overcoming the limitations of film-based glasses. X-ray diffraction, Raman spectroscopy, and X-ray photoelectron spectroscopy confirmed the presence of tungsten bronze-like Na5W14O44 functional units in the SiO2–B2O3–NaF glass matrix. The addition of a small amount of H2WO4 and Sb2O3 is critical for the formation of Na5W14O44 functional units because H2WO4 provides W for Na5W14O44, and Sb2O3 acts as a reducing agent that helps the formation of W5+ in Na5W14O44 under an air atmosphere. Furthermore, the NIR-shielding ability can be tuned by adjusting the concentration of Sb2O3 in the range of 0–1.5 mol % and of H2WO4 in the range of 4–6 mol %. The optimized composition containing 1.25 mol % of Sb2O3 and 5 mol % of H2WO4 exhibits excellent NIR-shielding ability (ΔT = 62.8%), high visible light transmittance (T max = 67.7%), and excellent thermal insulation. This performance is comparable to cesium tungsten bronze film-based glasses and much better than soda lime glass and ITO glass under sun irradiation. This study sheds light on fabricating energy-saving windows in a simple and cost-effective way with flexibility for fine tuning of NIR-shielding performance.

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“…Above 1000 °C, the eutectic alloy reacts with sand, dissolving in the formed alloy, which can be seen as a broad endothermic activity 1112-1228 °C [7,8]. The study on the admixture of substitute raw materials in the form of cullet and small quantities of slag shows that they have a positive effect on the process of dissolution and melting of glass batches [9]. A change in melting kinetics due to faster eutectic alloy formation improves the homogenization of glass melt in temperatures lower by 20-40 °C.…”

Section: Introductionmentioning

confidence: 99%

Influence of the increased content of Calumite blast-furnace slag on the melting of sodium–calcium–silicate glass

Kuśnierz

Szumera

Kosmal

et al. 2019

J Therm Anal Calorim

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A glass set with a high content of blast-furnace slag and a reduced amount of traditional raw materials requires optimization of the raw material composition and adjustment of its specificity to the temperature regime of melting, homogenizing and clarifying the glass mass. The introduction of an increased amount of blast-furnace slag allows to reduce the cost of raw materials: soda, limestone and high-class sand, reduce energy costs, whose consumption significantly decreases and reduces CO 2 emissions in line with EU requirements. The tests of thermal analysis of a glass set with different contents of Calumite are aimed at learning the mechanism of its operation by determining the changes caused by its different presence in the course of subsequent reactions between the components of the glass set. Analysis of the influence of the addition of different Calumite slag contents treated as a substitute for the raw material on the melting process of glassware sets was analyzed. The tests were carried out using differential thermal analysis (DTA) and thermogravimetry (TG) based on the model glass [mass%]: 73.0% SiO 2 , 1.0% Al 2 O 3 , 10.0% CaO, 2.0% MgO and 14.0% Na 2 O. The effect of combining Calumite with sulphate and multi-component fining agent-mixtures of As 2 O 3 , Sb 2 O 3 , NaNO 3 in proportions of 1:1:1 for chemical reaction and phase transformation, was investigated.

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Thermal analysis of the glass batch with a higher content of raw materials substitution based on selected fining agents

Cited by 4 publications

References 5 publications

Recycling of exhausted dust from regenerator of glass furnace in glass batch melting

Recycling of exhausted dust from regenerator of glass furnace in glass batch melting

Doping Sodium Tungsten Bronze-Like (Na₅W₁₄O₄₄) Near-Infrared Shielding Functional Units in Bulk Borosilicate Glasses for Energy-Saving Window Applications

Influence of the increased content of Calumite blast-furnace slag on the melting of sodium–calcium–silicate glass

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Thermal analysis of the glass batch with a higher content of raw materials substitution based on selected fining agents

Cited by 4 publications

References 5 publications

Recycling of exhausted dust from regenerator of glass furnace in glass batch melting

Recycling of exhausted dust from regenerator of glass furnace in glass batch melting

Doping Sodium Tungsten Bronze-Like (Na5W14O44) Near-Infrared Shielding Functional Units in Bulk Borosilicate Glasses for Energy-Saving Window Applications

Influence of the increased content of Calumite blast-furnace slag on the melting of sodium–calcium–silicate glass

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Doping Sodium Tungsten Bronze-Like (Na₅W₁₄O₄₄) Near-Infrared Shielding Functional Units in Bulk Borosilicate Glasses for Energy-Saving Window Applications