Applicability of water glass for the transfer of the glass-foaming process from controlled to air atmosphere

Hribar, Uroš; Spreitzer, Matjaž; König, Jakob

doi:10.1016/j.jclepro.2020.125428

Cited by 16 publications

(17 citation statements)

References 42 publications

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“…By EGA-MS it was systematically investigated how the addition of water glass affects the process. Further, it proposed an explanation of how water glass protects the carbon and it showed that the addition allows for the process to be successfully performed in the air atmosphere [ 335 ].…”

Section: Applications To Glassmentioning

confidence: 99%

On-Line Thermally Induced Evolved Gas Analysis: An Update—Part 1: EGA-MS

et al. 2022

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Advances in on-line thermally induced evolved gas analysis (OLTI-EGA) have been systematically reported by our group to update their applications in several different fields and to provide useful starting references. The importance of an accurate interpretation of the thermally-induced reaction mechanism which involves the formation of gaseous species is necessary to obtain the characterization of the evolved products. In this review, applications of Evolved Gas Analysis (EGA) performed by on-line coupling heating devices to mass spectrometry (EGA-MS), are reported. Reported references clearly demonstrate that the characterization of the nature of volatile products released by a substance subjected to a controlled temperature program allows us to prove a supposed reaction or composition, either under isothermal or under heating conditions. Selected 2019, 2020, and 2021 references are collected and briefly described in this review.

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Section: Applications To Glassmentioning

confidence: 99%

On-Line Thermally Induced Evolved Gas Analysis: An Update—Part 1: EGA-MS

et al. 2022

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“…They investigated the use of foam-oxidant pairs for the formation of foam glass [24]. In addition, this team carried out modeling of heat transfer mechanisms in recycled foam glass [10]; studied in detail glass foam with macroporosity using glass waste and sodium hydroxide as a foaming agent [11]; investigated the effect of the size of glass particles on the foaming process and physical characteristics of foam glass [12]; and also proved the applicability of liquid glass to transfer the glass foaming process from a controlled atmosphere to an air one [13]. Hesky et al worked on the development of liquid glass mixtures for the production of foam glass [25].…”

Section: Introductionmentioning

confidence: 99%

“…Foam glass is obtained by thermal foaming of a special glass mass containing a blowing agent [11]. The shortage of raw materials and the multistage processing of molten glass [12][13][14] hinder the widespread use of traditional technology of foam glass. The use of secondary glass breakage is aimed at reducing the shortage of raw materials, reducing the energy intensity of production.…”

Section: Introductionmentioning

confidence: 99%

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Foam Glass Crystalline Granular Material from a Polymineral Raw Mix

2021

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The article is devoted to the development of resource-saving technology of porous granular materials for energy-efficient construction. The relevance of the work for international research is to emphasize expanding the raw material base of porous lightweight concrete aggregates at the expense of technogenic and substandard materials. The work aims to study the processes of porization of glass crystalline granules from polymineral raw materials mixtures. The novelty of the work lies in the establishment of regularities of thermal foaming of glass crystalline granules when using waste of magnetic separation of skarn-magnetite (WMS) ores and lignite clay. Studies of liquid glass mixtures with various mineral fillers revealed the possibility of the formation of a porous structure with the participation of opoka, WMS and lignite clay. This is due to the presence in the materials of substances that exhibit thermal activity with the release of a gas phase. The foaming efficiency of the investigated materials increases when combined with glass breakage. The addition of WMS and lignite clay to the glass mixture increases the pore size in comparison with foam glass. The influence of the composition of raw mixtures on the molding and stability of granules is determined. The addition of sodium carbonate helps to strengthen the raw granules and reduce the softening temperature of the mass. The composition of the molding mixture of glass breakage, liquid glass and a multicomponent additive is developed, which provides an improvement in the molding properties of the glass mass, foaming of granules at a temperature of 750 °C. Foam glass crystalline granules have polymodal porosity, characterized by a density of 330–350 kg/m3, a compressive strength of 3.2–3.7 MPa, and a thermal conductivity of 0.057–0.061 W/(m·°C). Accordingly, the developed granules have a high potential use in structural and heat-insulating concretes.

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“…Another paper [27] includes in its content the possibility of using the aqueous solution of sodium silicate as the only foaming agent in the process of making glass foam. Analyzing the role of the addition of water glass in the mixture of cathode ray tube (CRT) panel glass, Mn3O4 and carbon as a foaming agent, the paper also investigates the peculiarities of using only sodium silicate mixed with CRT panel glass waste.…”

Section: Introductionmentioning

confidence: 99%

"Cheap building material prepared by unconventional heating of glass waste in alkaline solution"

Paunescu¹,

Axinte²

2022

RRIC/RJCE

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Rezumat. Spumă de sticlă fabricată din deșeu de sticlă și soluție apoasă de silicat de sodiu (apă de sticlă) cu excelente proprietăți termoizolante (densitate între 0,25-0,33 g cm -3 , conductivitate termică între 0,059-0,069 W (mK) -1 , porozitate între 84,3-88,1 % ) pentru aplicații în construcții a fost realizată cu succes folosind o tehnică originală de încălzire cu microunde predominant directă aplicată de autori, spre deosebire de metodele convenționale utilizate în mod obișnuit la fabricarea spumei de sticlă. Lucrarea a testat utilizarea apei de sticlă ca agent de spumare în condițiile particulare ale încălzirii cu microunde, deși capacitatea sa este cunoscută doar ca material de anvelopare în procesele de spumare cu agent carbonic lichid.Cuvinte cheie: spumă de sticlă, încălzire cu microunde, apă de sticlă, soluție apoasă alcalină.

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Applicability of water glass for the transfer of the glass-foaming process from controlled to air atmosphere

Cited by 16 publications

References 42 publications

On-Line Thermally Induced Evolved Gas Analysis: An Update—Part 1: EGA-MS

On-Line Thermally Induced Evolved Gas Analysis: An Update—Part 1: EGA-MS

Foam Glass Crystalline Granular Material from a Polymineral Raw Mix

"Cheap building material prepared by unconventional heating of glass waste in alkaline solution"

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