Glass-Ceramics from Kinescope Glass Cullet

2012 ◽  
pp. 151-159 ◽  
Author(s):  
M. Reben ◽  
J. Wasylak ◽  
M. Kosmal
Keyword(s):  
Glass Ceramics ◽  
Glass Cullet

scholarly journals Eco-Compatible Construction Materials Containing Ceramic Sludge and Packaging Glass Cullet

2021 ◽  
Vol 11 (8) ◽  
pp. 3545
Author(s):  
Fernanda Andreola ◽  
Isabella Lancellotti ◽  
Paolo Pozzi ◽  
Luisa Barbieri
Keyword(s):  
Raw Materials ◽  
Construction Materials ◽  
Treatment Plant ◽  
Glass Ceramics ◽  
Chemical Properties ◽  
Linear Shrinkage ◽  
Glass Cullet ◽  
Commercial Glass ◽  
Packaging Glass ◽  
And Chemical Properties

This research reports results of eco-compatible building material obtained without natural raw materials. A mixture of sludge from a ceramic wastewater treatment plant and glass cullet from the urban collection was used to obtain high sintered products suitable to be used as covering floor/wall tiles in buildings. The fired samples were tested by water absorption, linear shrinkage, apparent density, and mechanical and chemical properties. Satisfactory results were achieved from densification properties and SEM/XRD analyses showed a compact polycrystalline microstructure with albite and wollastonite embedded in the glassy phase, similar to other commercial glass-ceramics. Besides, the products were obtained with a reduction of 200 °C with respect to the firing temperatures of commercial ones. Additionally, the realized materials were undergone to leaching test following Italian regulation to evaluate the mobility of hazardous ions present into the sludge. The data obtained verified that after thermal treatment the heavy metals were immobilized into the ceramic matrix without further environmental impact for the product use. The results of the research confirm that this valorization of matter using only residues produces glass ceramics high sintered suitable to be used as tile with technological properties similar or higher than commercial ones.

scholarly journals Development and Characterization of Glass-Ceramics from Combinations of Slag, Fly Ash, and Glass Cullet without Adding Nucleating Agents

Materials ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2032 ◽  
Author(s):  
Diana M. Ayala Valderrama ◽  
Jairo A. Gómez Cuaspud ◽  
Judith A. Roether ◽  
Aldo R. Boccaccini
Keyword(s):  
Thermal Analysis ◽  
Fly Ash ◽  
Structural Characteristics ◽  
Glass Ceramics ◽  
Industrial Applications ◽  
Industrial Wastes ◽  
Nucleating Agents ◽  
Glass Cullet ◽  
X Ray ◽  
Structural Applications

Developments in the field of materials science are contributing to providing solutions for the recycling of industrial residues to develop new materials. Such approaches generate new products and provide optimal alternatives to the final disposal of different types of industrial wastes. This research focused on identifying and characterizing slag, fly ash, and glass cullet from the Boyacá region in Colombia as raw materials for producing glass-ceramics, with the innovative aspect of the use of these three residues without the addition of nucleating agents to produce the glass-ceramics. To characterize the starting materials, X-ray diffraction (XRD), X-ray fluorescence (XRF), and Scanning Electron Microscopy (SEM) techniques were used. The results were used to evaluate the best conditions to produce mixtures of the three waste components and to determine the specific compositions of glass-ceramics to achieve products with attractive technical properties for potential industrial applications. The proposed mixtures were based on three compositions: Mixture 1, 2, and 3. The materials were obtained through thermal treatment at 1200 °C in a tubular furnace in accordance with the results of a comprehensive characterization using thermal analysis. The microstructure, thermal stability, and structural characteristics of the samples were examined through SEM, differential thermal analysis (DTA), and XRD analyses, which showed that the main crystalline phases were diopside and anorthite, with a small amount of enstatite and gehlenite. The obtained glass-ceramics showed properties of technical significance for structural applications.

Research and Development of Multifunctional Porous Materials on the Basis of Clay and Glass Waste

2021 ◽  
Author(s):  
◽  
Andrejs Šiškins
Keyword(s):  
Literature Review ◽  
Research And Development ◽  
Glass Ceramics ◽  
Porous Ceramics ◽  
Household Waste ◽  
Glass Cullet ◽  
Practical Application ◽  
Glass Waste ◽  
Experimental Part ◽  
Highly Porous

The Ph. D. Thesis is devoted to the obtaining of porous ceramics from Latvian clay and household waste ‒ glass cullet. Using modern technological approaches porous and highly porous clay-glass ceramics were obtained, their properties and practical application possibilities were studied. The Doctoral Thesis consists of an introduction, literature review, methodical part, evaluation of the results of the experimental part, conclusions, and bibliography.

Investigation of the Properties of Soda-Lime Silicate Glass Doped with TiO2

2014 ◽  
Vol 979 ◽  
pp. 128-131 ◽  
Author(s):  
E. Meechoowas ◽  
Usanee Pantulap ◽  
T. Jitwatcharakomal
Keyword(s):  
Silicate Glass ◽  
Glass Structure ◽  
Glass Ceramics ◽  
Soda Lime ◽  
Color Measurement ◽  
Glass Cullet ◽  
Calculated Activation Energy ◽  
Lower Thermal Expansion ◽  
Soda Lime Silicate Glass ◽  
Calculated Activation

In this study, the properties of re-melted soda-lime silicate glass cullet doped with TiO2 were investigated in order to study the potentials to use as parent glass for glass-ceramics. TiO2 of 0.5, 1 and 3 mol% was doped into the 71SiO2-10Na2O-6K2O-5CaO-4MgO-2SrO-TiO2-Al2O3 glass cullet and melted at 1500°C for 3 hours, and then annealed at 550 °C. The optical and physical properties were examined. It was found that the refractive index and density of glasses were raised with increasing of TiO2 concentration. The optical properties measured by UV-Vis spectrophotometer showed that the UV edge in the absorption spectra was shifted to a higher wavelength, and the transmission at 583 nm was decreased. The CIE L*a*b* color measurement showed that the glasses were slightly colorless but the appearance of yellow increased with higher TiO2 concentration. Lower thermal expansion coefficient and higher glass transition temperature as well as the dilatometric softening point were observed as the concentration of TiO2 was increasing. Finally, the calculated activation energy was 476, 493, 506 and 637 kJ/mol with 0, 0.5, 1 and 3 mol% doped TiO2, respectively. At doped TiO2 of 3 mol%, the properties of glass were changed rapidly due to the substitution of [Ti4+] in local [Si4+] resulting in increasing the bond strength in glass structure.

Feasibility of Producing Glass-Ceramics from a Mixture of Glass Cullet-Eggshell and Perlite

2018 ◽  
Vol 766 ◽  
pp. 139-144
Author(s):  
Patiphan Nakkam ◽  
Napat Chantaramee
Keyword(s):  
Weight Loss ◽  
Chemical Resistance ◽  
Sodium Hydroxide Solution ◽  
Glass Ceramics ◽  
Soda Lime ◽  
Nucleating Agent ◽  
Chemical Compositions ◽  
Glass Cullet ◽  
X Ray Diffraction ◽  
X Ray

Feasibility of producing glass-ceramics from cullet, eggshell and perlite was investigated. In this study, a nucleating agent was synthesized from calcined eggshell and expanded perlite prior to blend with soda-lime waste glass, and then sintered at temperatures ranging from 850 to 1050°C at a heating rate of 10°C/min for 30 - 180 minutes. The crystallization behavior of glass-ceramics was investigated by means of X-ray diffraction analysis and surface morphology, and the chemical compositions were evaluated by scanning electron microscopy and energy dispersive X-ray spectroscopy. Results showed that crystalline phase embedded in the glass phase were needle-like crystal of wollastonite, cristobalite and quartz. According to the chemical resistance test, the obtained glass-ceramics showed acceptable corrosion resistance particularly in acidic environment. The weight loss for glass-ceramics immersed in 1wt% of sodium hydroxide solution was 0.28 - 0.50 wt%, while weight loss due to 1vol% of sulfuric acid solution was 0.04 - 0.16 wt%.

Synthesis of glass-ceramics using glass cullet and vitrified industrial by-products

2007 ◽  
Vol 27 (2-3) ◽  
pp. 629-636 ◽  
Author(s):  
A. Karamberi ◽  
K. Orkopoulos ◽  
A. Moutsatsou
Keyword(s):  
Glass Ceramics ◽  
Glass Cullet ◽  
By Products

The Effect of Zirconium Oxide on Properties and Crystallization of Soda-Lime Silicate Glass

2017 ◽  
Vol 751 ◽  
pp. 374-378 ◽  
Author(s):  
Ekarat Meechoowas ◽  
Surisa Suriyoporn ◽  
Usanee Pantulap ◽  
Kanit Tapasa
Keyword(s):  
Silicate Glass ◽  
Zirconium Oxide ◽  
Glass Ceramics ◽  
Soda Lime ◽  
Nucleating Agent ◽  
Glass Cullet ◽  
X Ray Diffraction ◽  
Differential Scanning Colorimetry ◽  
Produce Glass ◽  
Soda Lime Silicate Glass

In this study, the properties and crystallization of re-melted soda-lime silicate glass cullet added with Al2O3, CaCO3 and ZrO2 were investigated in order to study the potential usage as a parent glass for glass-ceramics. Al2O3, CaCO3 and ZrO2 were added into the 71SiO2-10Na2O-6K2O-5CaO-4MgO-2SrO-ZrO2-Al2O3 glass cullet to increase the crystallization of the glass. The glass batches (%wt) of (65-x) Cullet:13Al2O3:22CaCO3:xZrO2 (x = 0, 1, 2, 4, 6 and 8) were melted at 1500°C for 3 hours. The crystallization was investigated by Differential Scanning Colorimetry technique (DSC) and it was found that the glasses with 6 and 8 %wt of ZrO2 crystallized rapidly. It means that ZrO2 acted as the nucleating agent in this glass system. The major crystallines determined by X-ray diffraction technique (XRD) were silica (SiO2), wollastonite (CaSiO3) potassium silicate (K6Si3O9) and zirconium oxide (ZrO2). The thermal expansion of glasses determined by dilatometric method indicated the characteristic of glass-ceramics and the effect of ZrO2 on the thermal properties of glass. In conclusion, modifying the composition of soda-lime silicate cullet with Al2O3 CaCO3 and ZrO2 had potential to produce glass-ceramics.

The Microstructure of Steatite (Protoenstatite)

1985 ◽  
Vol 43 ◽  
pp. 236-237
Author(s):  
W. E. Lee ◽  
A. H. Heuer
Keyword(s):  
High Frequency ◽  
Glass Ceramics ◽  
Magnesium Silicate ◽  
Beam Current ◽  
Glassy Matrix ◽  
Angle Of Incidence ◽  
X Ray ◽  
Mechanical And Electrical Properties ◽  
Argon Ions ◽  
High Temperature Polymorph

IntroductionTraditional steatite ceramics, made by firing (vitrifying) hydrous magnesium silicate, have long been used as insulators for high frequency applications due to their excellent mechanical and electrical properties. Early x-ray and optical analysis of steatites showed that they were composed largely of protoenstatite (MgSiO3) in a glassy matrix. Recent studies of enstatite-containing glass ceramics have revived interest in the polymorphism of enstatite. Three polymorphs exist, two with orthorhombic and one with monoclinic symmetry (ortho, proto and clino enstatite, respectively). Steatite ceramics are of particular interest a they contain the normally unstable high-temperature polymorph, protoenstatite.Experimental3mm diameter discs cut from steatite rods (∼10” long and 0.5” dia.) were ground, polished, dimpled, and ion-thinned to electron transparency using 6KV Argon ions at a beam current of 1 x 10-3 A and a 12° angle of incidence. The discs were coated with carbon prior to TEM examination to minimize charging effects.

Energy saving technology for sintering of black bricks from high-siliceous clay

MRS Advances ◽  
2020 ◽  
Vol 5 (61) ◽  
pp. 3123-3131
Author(s):  
Mario Flores Nicolas ◽  
Marina Vlasova ◽  
Pedro Antonio Márquez Aguilar ◽  
Mykola Kakazey ◽  
Marcos Mauricio Chávez Cano ◽  
...  
Keyword(s):  
Low Temperature ◽  
Oxygen Deficiency ◽  
Glass Ceramics ◽  
Total Content ◽  
Ceramic Materials ◽  
Ternary Mixtures ◽  
High Porosity ◽  
Reducing Conditions ◽  
Binary And Ternary Mixtures ◽  
Dark Color

AbstractThe low-temperature synthesis of bricks prepared from high-siliceous clays by the method of plastic molding of blanks was used. For the preparation of brick blanks, binary and ternary mixtures of high-siliceous clays, black sand, and bottle glass cullet were used. Gray-black low-porosity and high-porosity ceramics was obtained by sintering under conditions of oxygen deficiency. It has been established that to initiate plastic in mixtures containing high-siliceous clay, it is necessary to add montmorillonite/bentonite additives, carry out low-temperature sintering, and introduce low-melting glass additives with a melting point ranging from 750 to 800 °C. The performed investigations have shown that the sintering of mixtures with a total content of iron oxide of about 5 wt% under reducing conditions at Tsint. = 800°C for 8 h leads to the formation of glass ceramics consisting of quartz, feldspars, and a phase. The main sources of the appearance of a dark color is the formation of [Fe3+O4]4- and [Fe3+O6]9- anions in the composition of the glass phase and feldspars. By changing the contents of clay, sand, and glass in sintering, it is possible to obtain two types of ceramic materials: (a) in the form of building bricks and (b) in the form of porous fillers.

Magnetic Properties of xCeO2•(50 − x) PbO•50B2O3 Glasses and Glass Ceramics

2017 ◽  
Vol 13 (1) ◽  
pp. 4486-4494 ◽  
Author(s):  
G.El Damrawi ◽  
F. Gharghar
Keyword(s):  
Magnetic Properties ◽  
Large Scale ◽  
Glass Ceramics ◽  
Magnetic Behavior ◽  
Crystal Formation ◽  
Dual Roles ◽  
Effective Agent ◽  
Ordered Structures ◽  
Essential Change

Cerium oxide in borate glasses of composition xCeO2·(50 − x)PbO·50B2O3 plays an important role in changing both microstructure and magnetic behaviors of the system. The structural role of CeO2 as an effective agent for cluster and crystal formation in borate network is clearly evidenced by XRD technique. Both structure and size of well-formed cerium separated clusters have an effective influence on the structural properties. The cluster aggregations are documented to be found in different range ordered structures, intermediate and long range orders are the most structures in which cerium phases are involved. The nano-sized crystallized cerium species in lead borate phase are evidenced to have magnetic behavior.  The criteria of building new specific borate phase enriched with cerium as ferrimagnetism has been found to keep the magnetization in large scale even at extremely high temperature. Treating the glass thermally or exposing it to an effective dose of ionized radiation is evidenced to have an essential change in magnetic properties. Thermal heat treatment for some of investigated materials is observed to play dual roles in the glass matrix. It can not only enhance alignment processes of the magnetic moment but also increases the capacity of the crystallite species in the magnetic phases. On the other hand, reverse processes are remarked under the effect of irradiation. The magnetization was found to be lowered, since several types of the trap centers which are regarded as defective states can be produced by effect of ionized radiation. 

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