Optimisation of sintered glass–ceramics from an industrial waste glass

Mica glass-ceramics can be applied in all kinds of electrical equipment, locomotive internal circuits in high-speed rail, ordinary electric locomotive and subway locomotive. In this study, mica glass-ceramics were prepared by sintering process using flake mica and waste glass as the main raw material with low cost. Different mica glass-ceramic samples were fabricated by changing the formula of raw materials, molding process and sintering temperature. X-ray diffraction, scanning electron microscopy, three-point bending test, and balanced-bridge technique were applied to investigate the phase, microstructure, mechanical and electrical resistivities of the samples, respectively. The results show that the optimum sintering temperature is 900 to 1000 °C holding for two hours, the desirable ratio is 70 wt% of mica powder while 30 wt% of glass powder. In that condition the sample could be less porosity, high flexural strength (63.3 MPa) and eligible electrical resistivity (0.4×1013 Ω·cm).

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High strength glass-ceramics sintered with coal gangue аs а raw material

Science of Sintering ◽

10.2298/sos1903285w ◽

2019 ◽

Vol 51 (3) ◽

pp. 285-294

Author(s):

Dang Wei ◽

H.-Y. He

Keyword(s):

Building Materials ◽

Raw Materials ◽

Glass Ceramics ◽

High Strength ◽

Coal Gangue ◽

Raw Material ◽

Sintering Process ◽

Forming Process ◽

Sintered Glass ◽

Utilization Ratio

High strength lightweight glass-ceramics were fabricated with coal gangue and clay as main raw materials. The utilization ratio of coal gangue, the ratio of the coal gangue with clay, mineralization agents, forming process and sintering process on the properties of the fabricated glass-ceramics were optimized. The utilization ratio of coal gangue reached 75, and the ratio of coal gangue to clay was 3/1, as an optimal property was observed. The optimal sintering temperature was found to be 1370?C. At this optimal temperature, the sintered glass-ceramics showed the main phase of mullite and spindle and so showed high strength, low density, and low water absorbance. The appropriate amounts of codoping of the TiO2, ZnO, and MnO2/dolomite as mineralization agents obviously enhanced the properties of the glass-ceramics. Process optimizations further determined reasonable and optimal process parameters. The high strength lightweight glass-ceramics fabricated in this work may be very suitable for various applications including building materials, cooking ceramics, and proppant materials, et al.

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Characterization study of industrial waste glass as starting material in development of bioactive materials

Journal of Fundamental and Applied Sciences ◽

10.4314/jfas.v9i6s.27 ◽

2018 ◽

Vol 9 (6S) ◽

pp. 350

Author(s):

H. A. Samad ◽

R. A. Rashid

Keyword(s):

Industrial Waste ◽

Waste Glass ◽

Starting Material ◽

Bioactive Materials ◽

Characterization Study

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Influence of magnesia on sinter-crystallization, phase composition and flexural strength of sintered glass-ceramics from waste materials

Materials Chemistry and Physics ◽

10.1016/j.matchemphys.2016.02.061 ◽

2016 ◽

Vol 174 ◽

pp. 143-149 ◽

Cited By ~ 17

Author(s):

Jinshan Lu ◽

Xinquan Cong ◽

Zhangyang Lu

Keyword(s):

Phase Composition ◽

Flexural Strength ◽

Glass Ceramics ◽

Waste Materials ◽

Sintered Glass

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Monolithic and Cellular Sintered Glass-Ceramics from Wastes

Advances in Science and Technology - 11th International Ceramics Congress ◽

10.4028/3-908158-01-x.596 ◽

2006 ◽

pp. 596-601

Author(s):

Enrico Bernardo ◽

Giovanni Scarinci ◽

S. Hreglich

Keyword(s):

Glass Ceramics ◽

Sintered Glass

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Vitrification and Sinter-Crystallization of Iron-Rich Industrial Wastes

Advances in Science and Technology ◽

10.4028/www.scientific.net/ast.92.174 ◽

2014 ◽

Vol 92 ◽

pp. 174-183 ◽

Cited By ~ 4

Author(s):

Alexander Karamanov

Keyword(s):

Mechanical Properties ◽

Sintering Temperature ◽

Glass Ceramics ◽

Inert Atmosphere ◽

Industrial Wastes ◽

Low Temperature Sintering ◽

Densification Process ◽

Moderate Amount ◽

Intensive Phase ◽

Sintered Glass

Results about the vitrification of several hazardous iron-rich industrial wastes (from productions of Zn and Cu metals, as well as EAFD and MSWA) and the usage of obtained glasses for synthesise of sintered glass-ceramics are summarises. It is shown that the appropriated method of sinter-crystallization mainly depends on the crystallization trend of used glasses. When the parent composition is characterised by formation of a moderate amount of crystal phase low temperature sintering with short crystallization step in the interval 800-900 °C can be used. In addition, attractive granite-like building glass-ceramic can be obtained by mixing fine and coarse glass frits and “free” sintering in refractory moulds at 1000-1050 °C. Contrary, when intensive phase formation carries out the crystallization inhibits the sintering resulting in specimens with scarce degree of densification. However, in some cases a secondary densification process occurs at temperatures near to the eutectic ones, leading to well sintered samples with higher crystallinity and improved mechanical properties. It is also highlighted that the preventing of Fe2+oxidation by using inert atmosphere during the heat-treatments leads to a decreasing of sintering temperature, finer crystalline structure and additional enhancement of the mechanical properties.

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