Preparation of CaO–Al2O3–SiO2 glass ceramics from coal gangue

Yang, Mei; Guo, Zhixing; Deng, Yinsheng; Xing, Xueling; Qiu, Kehui; Long, Jianping; Li, Junfeng

doi:10.1016/j.minpro.2011.11.004

Cited by 65 publications

(33 citation statements)

References 20 publications

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“…1, 2, 3). Previous studies indicated that there was a competition between breaking network and forming their nets with the change of SiO 2 and CaO content [17][18][19]. Excess CaO can break the glass network structure by the increasing number and size of vacancies.…”

Section: Physical Characteristics Of Glass-ceramicsmentioning

confidence: 99%

“…However, the presence of SiO 2 was helpful to incorporate Ca 2? cations into the interspace among silica tetrahedrons, which would connect the broken network and make the glass network structure more stable [17,18]. According to the national standard GB/T 3810.4-206, glass-ceramics with Table 2 Physical and chemical properties of glass-ceramics samples prepared from RFA and analytic reagent SiO 2 with different blending ratios…”

Section: Physical Characteristics Of Glass-ceramicsmentioning

confidence: 99%

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Crystalline phase evolution behavior and physicochemical properties of glass–ceramics from municipal solid waste incineration fly ash

Luan

Chai

et al. 2016

J Mater Cycles Waste Manag

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Appropriate management and treatment of fly ash from municipal solid waste (MSW) incineration plant have become an urgent environmental protection problem. In this study, glass-ceramics have been prepared from MSW incineration fly ash and the SiO 2 with different blending ratios (BR SiO 2 ). With the increase in BR SiO 2 , the main crystalline phase of glass-ceramics was converted from gehlenite and pseudowollastonite into wollastonite. The texture was gradually formed in the surface of glassceramics due to the mutual arrangement of crystal particles and the decrease in the number and size of the gaps. Because of the mineral evolution and the microstructure change, the compressive strength and water absorption were significantly improved from 8.40 to 18.82 MPa and from 6.83 to 0.44 wt%, respectively, when BR SiO 2 was in the range from 19 to 44 wt%. If BR SiO 2 [29 wt%, the prepared glass-ceramics had good corrosion resistance in 10 % H 2 SO 4 solution and 10 % NaOH solution, respectively. Therefore, glass-ceramics prepared from MSW incineration fly ash can be used as ceramic tile for building and decoration.

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Section: Physical Characteristics Of Glass-ceramicsmentioning

confidence: 99%

Section: Physical Characteristics Of Glass-ceramicsmentioning

confidence: 99%

Crystalline phase evolution behavior and physicochemical properties of glass–ceramics from municipal solid waste incineration fly ash

Luan

Chai

et al. 2016

J Mater Cycles Waste Manag

View full text Add to dashboard Cite

show abstract

“…Gangue waste occupied land and causes serious environmental and health problems, action for which is urgent and has to be solved. Most of the coal gangue is reused for construction and ceramic materials . Lü et al reported reusing coal gangue and bauxite in sintering porous mullite ceramic supports with acceptable mechanical strength.…”

Section: Introductionmentioning

confidence: 99%

Low‐cost, green synthesis and adsorption properties for dyes of novel porous gangue/palygorskite composite microspheres

Yan

Wang

Zhang

et al. 2019

Int J Applied Ceramic Tech

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In this work, gangue/palygorskite composite microspheres were fabricated through spray drying process and activated by calcination treatment. Its microstructure and adsorption capacity for the removal of dye (MB) were also studied, systematically. Results showed that kaolinite, α-quartz and palygorskite were the major phases in microspheres after proper calcination (lower than 900°C). BET-specific surface area of the microspheres reached the maximum value of 62.23 m 2 /g at 700°C, and then decreased with further increasing the heating temperature. In general, composite microspheres showed the largest adsorption capacity of MB after heat-treated at 700°C. The q max of MB onto microspheres was 29.9-51.9 mg/g. The adsorption process of MB onto microspheres was well described by both the pseudo-second-order kinetic and Langmuir isotherm model. The composite microspheres also had extraordinary recyclability. This novel microsphere could be employed as a candidate for novel absorbent and filter medium in the practical application for dye treatment in industrial applications.

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“…In recent years, many researchers have explored in transforming waste materials into glass-ceramics products meant for various applications [26][27][28]. Yang et al have studied the properties of SiO 2 -Na 2 O-Al 2 O 3 -CaO glass-ceramics prepared from coal gangue [29]. The phases detected in the glass-ceramics were gehlenite (Ca 2 Al 2 SiO 7 ) and nepheline (NaAlSiO 4 ).…”

Section: Introductionmentioning

confidence: 99%

Effect of sintering on crystallization and structural properties of soda lime silica glass

Hafiz

Amin

Sidek³

et al. 2017

SCI SINTER

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The effect of sintering temperatures on crystallization and structural of the soda lime silica (SLS) glass was reported. Elemental weight composition of the SLS glass powder was identified through Energy dispersive X-ray fluorescence (EDXRF) analysis while the thermal behavior of the glass was determined using Differential thermal analysis (DTA) technique. Archimedes' method and direct geometric measurement were respectively used to determine bulk density and linear shrinkage of the glass samples. Crystallisation behavior of the samples was investigated by X-ray diffraction (XRD) analysis and chemical bonds present in the samples were measured using Fourier Transform Infrared (FTIR) spectroscopy. Results showed an increase in the density and linear shrinkage of the samples as a function of the sintering temperature. The XRD analysis revealed the formation of α-quartz (SiO 2) and a minor amount of devitrite phases in the samples and these were further verified through the detection of chemical bonds by FTIR after sintering at 800ºC. The properties of the glassceramics can be explained on the basis of crystal chemistry which indicated that the alkali ions formed as carriers in the random network structure and can be recommended for the manufacture of glass fiber or toughened glass-ceramic insulators.

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Preparation of CaO–Al2O3–SiO2 glass ceramics from coal gangue

Cited by 65 publications

References 20 publications

Crystalline phase evolution behavior and physicochemical properties of glass–ceramics from municipal solid waste incineration fly ash

Crystalline phase evolution behavior and physicochemical properties of glass–ceramics from municipal solid waste incineration fly ash

Low‐cost, green synthesis and adsorption properties for dyes of novel porous gangue/palygorskite composite microspheres

Effect of sintering on crystallization and structural properties of soda lime silica glass

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