Optimal conditions and significant factors for fabrication of soda lime glass foam from industrial waste using nano AlN

Ewais, Emad M.M.; Attia, Mohamed A.; El‐Amir, Ahmed A. M.; Elshenway, Ahmed M.H.; Fend, Thomas

doi:10.1016/j.jallcom.2018.03.039

Cited by 31 publications

(12 citation statements)

References 8 publications

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“…This might be the reason to lower the foaming temperature in the samples containing CRT glass and dross and to create a favorable viscosity allowing gas bubbles generation, consequently, increasing the foaming height in comparison with the base silicate foam glass. Based on the literature review, the decomposition of AlN takes place at 800-950 • C [2,23]. This range is mostly covered by samples with CRT glass and dross at the same time.…”

Section: Microstructurementioning

confidence: 99%

“…The most frequent glass type is the soda-lime-silica (SLS, Na 2 O-CaO-SiO 2 ) glass. Millions of tons of SLS glass are produced (and become waste) worldwide in the form of container and float glass products [23]. Commercial foam glasses have 45-85 vol% porosity, 0.1-1.2 g/cm 3 apparent density, 0.4-6 MPa compressive strength, and 0.1-0.2 W/mK thermal conductivity [24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

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Waste-to-Reuse Foam Glasses Produced from Soda-Lime-Silicate Glass, Cathode Ray Tube Glass, and Aluminium Dross

Sassi

Simon

2021

Inorganics

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Aluminium dross is a hazardous industrial waste generated during aluminium production. It contains metallic oxides of aluminium and magnesium, other phases (aluminum nitride), and residues of fluxes and salts from the melting process of aluminium. Discarding this by-product is considered an environmental and economic challenge due to the high reactivity of dross with water or even air humidity. After removing the hazardous components from the as-received dross, one of the optional approaches is to incorporate the treated dross into construction materials. Dross is applied in several types of research as a secondary raw material source for alumina, clinker, cement or glass-ceramic production, but only a few papers focus on the usage of dross as a foaming agent for foams. Even fewer research are reported where dross was applied as a basic component of foam glasses. In this work, foam glasses were produced completely from waste materials: Aluminium dross, container (SLS) glass, and cathode ray tube (CRT) glass. The research holds several specificities, i.e., combining two industrial waste materials (CRT glass and dross), and adding an increased amount from the wastes. The physical and mechanical characteristics were examined with a special focus on the effect of the foam glass components on the microstructure, density, thermal conductivity, and compressive strength.

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Section: Microstructurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Waste-to-Reuse Foam Glasses Produced from Soda-Lime-Silicate Glass, Cathode Ray Tube Glass, and Aluminium Dross

Sassi

Simon

2021

Inorganics

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“…According to the trial sintering experiment and the differential thermal analysis, the following nine groups of orthogonal experiments (Table 3) are determined to study the factors such as the amount of foaming agent and the heat treatment system. The degree of dispersion of bubbles in foamed glass-ceramics depends to a certain extent on the uniformity of the dispersion of the foaming agent in the basic glass powder [20]. Furthermore, the amount of foaming agent incorporated will greatly affect the distribution of bubbles.…”

Section: Basic Glassmentioning

confidence: 99%

Study on the Preparation and Properties of Fe-tailings Based Foamed Glass-ceramics

Luo

Wang

et al. 2021

Preprint

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Traditional building materials have disadvantages such as high pollution and high energy consumption, so it is particularly important to develop new environmentally friendly materials. In this paper, foamed glass-ceramics are prepared by high-temperature melting method with iron tailings, blast furnace slag, and desulfurization slag as the main raw materials, and CaCO3 as foaming agent. The effects of three kinds of basic glass scheme, the content of the foaming agent and heat treatment system on the degree of crystallization, micro-morphology, and crystal phase composition of foamed glass-ceramics are studied. The nucleation temperature and crystallization temperature of the basic glass are determined by differential thermal analysis curve to be 730 ℃ and 1000 ℃, respectively. Orthogonal experiments show that the optimal composition ratio of the prepared base glass is CaO: 22.25 wt.%, MgO: 4.57 wt.%, Al2O3: 6.19 wt.%, SiO2: 41.8 wt.%. The optimized scheme is based on a base glass prepared with 45 wt.% iron tailings, 25 wt.% blast furnace slag, and 30 wt.% desulfurization slag, added with 10% CaCO3 and sintered to 1000 °C for 3 h. The bending strength, fracture toughness, and elastic modulus are 95.73 Mpa, 53.09 Mpa·m1/2, 28023.55 Mpa, respectively.

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“…This mixture is heated to a temperature at which the glass becomes a viscous liquid, and in turn, the additive decomposes and releases gases, which, unable to migrate to reach the surface, are trapped within the glass mass, thereby creating closed cells. As base glass, the use of waste glass of different natures has been reported, such as fluorescent tubes [ 21 ], cathode ray tubes [ 22 , 23 , 24 , 25 , 26 , 27 ], bottles [ 28 , 29 , 30 ], flat glass [ 31 ], float glass [ 27 ], calcosodic glass [ 26 , 32 , 33 ] and glass cullet [ 34 , 35 ]. For foaming additives, the use of several materials, such as alkaline or alkaline earth carbonates of both mineral origin [ 36 , 37 , 38 ] and animal origin, such as eggshell [ 21 , 22 , 29 , 39 ] or porcine bone [ 40 ]; NaOH [ 27 ]; SiC [ 31 , 35 , 41 ]; metallic oxides; graphite [ 41 , 42 , 43 ]; organic compounds, such as glycerin, gelatin, starch or saccharose [ 30 ]; and agro–food wastes, such as banana leaves [ 28 ] or tobacco residue [ 44 ], has been reported.…”

Section: Introductionmentioning

confidence: 99%

Glass Lightweight Aggregates from Glass Cullet and Mining and Food Industry Carbonate Waste

2022

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Lightweight aggregates are extensively used in construction and other industrial applications due to their technological characteristics. The extraction of natural aggregates results in serious environmental effects. Thus, within the circular economy concept, the valorization of waste through the optimization of materials and product design is encouraged. In this work, glass lightweight aggregates were prepared from mixtures of white glass cullet and carbonate wastes from mining (wastes originating from the extraction, manufacture and marketing of magnesite and its derivatives) and the food industry (eggshell and mussel shell). The effects of different processing parameters, such as the particle size of the base glass, percentage of the blowing additive, shaping method, heating rate, temperature and processing time, were evaluated. The results indicate that the mineralogical composition of the blowing agent and the particle size of the base glass are the two processing parameters with the greatest impact on expansion efficiency. Thus, glass artificial aggregates were obtained with characteristics similar to those of commercial products (density values ranged between 0.3 and 0.8 g/cm3 and mechanical strength between 0.7 and 1.5 MPa) from thermal shock expansion treatments in the temperature range 800–900 °C and with dwell times no longer than 15 min.

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Optimal conditions and significant factors for fabrication of soda lime glass foam from industrial waste using nano AlN

Cited by 31 publications

References 8 publications

Waste-to-Reuse Foam Glasses Produced from Soda-Lime-Silicate Glass, Cathode Ray Tube Glass, and Aluminium Dross

Waste-to-Reuse Foam Glasses Produced from Soda-Lime-Silicate Glass, Cathode Ray Tube Glass, and Aluminium Dross

Study on the Preparation and Properties of Fe-tailings Based Foamed Glass-ceramics

Glass Lightweight Aggregates from Glass Cullet and Mining and Food Industry Carbonate Waste

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