Development of a loose powder sintering method for the preparation of porous ceramic from municipal solid waste incineration fly ash

Huang, Jian; Jin, Yiying; Xu, Cheng; Shu, Zhifei; Ma, Xinxin; Liu, Jingyong

doi:10.1016/j.wasman.2023.06.010

Cited by 26 publications

(4 citation statements)

References 52 publications

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“…In addition, the insufficient liquid phase generation by the waste glass powders was not sufficient to wrap the excessive gas generation, facilitating release of gas. and formation of open pores [30]. The escaping gases contributed to the increase in apparent porosity, while the gas wrapped by the liquid formed closed pores.…”

Section: Mechanism Of Porous Ceramsite Formationmentioning

confidence: 99%

Preparation of porous ceramsite from municipal sludge and its structure characteristics

Meng,

Cui,

Srinivasakannan

et al. 2023

Advances in Applied Ceramics: Structural, Functional and Biocer

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In this paper, the municipal sludge was used as the main raw material to prepare a kind of porous ceramsite. The porous ceramsite composition of 50 wt-% of municipal sludge, 10 wt-% of municipal solid waste incineration bottom ash, 45 wt-% of waste glass powders, sintering temperature of 900°C and holding duration of 30 min. The best of the ceramsite synthesised had 1-h water absorption capacity of 51.53%, apparent porosity of 64.14% and pore volume 0.671 mL g −1 . During the sintering process, the waste glass powders generated a large amount of liquid phase, wrapt the gas produced by organic matter, and formed a porous structure inside the ceramic particles. At the same time, the silica and aluminium were combined to form Kyanite, which constitutes the basic skeleton of the ceramic particles showing a certain strength. Besides, silicon oxide and calcium silicate generated Wollastonite improving the corrosion resistance of ceramic particles as well. The adsorption capacity of the prepared porous ceramsite modified by acid combined with sodium citrate was 3.1 mg g −1 using the prepared porous ceramsite as substrate. The adsorption kinetics of ammonia nitrogen by porous ceramics conforms to the quasi-second-order kinetic model, and the adsorption isotherm model conforms to the Langmuir model. The findings lay a theoretical foundation for the integration of resource utilisation of solid waste and later application.

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Section: Mechanism Of Porous Ceramsite Formationmentioning

confidence: 99%

Preparation of porous ceramsite from municipal sludge and its structure characteristics

Meng,

Cui,

Srinivasakannan

et al. 2023

Advances in Applied Ceramics: Structural, Functional and Biocer

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“…Melting methods include electrothermal and fuel melting with temperature ranges of 1300−1500 °C. 15,16 Plasma melting technology is an emerging electrothermal melting that can achieve the volume reduction (68.7−82.2%) and weight loss (23.8−56.7%) of IFA. 17,18 Sintering technology utilizes IFA as a raw material to produce ceramsite under 1100−1200 °C and offers a high destruction efficiency of dioxins and low investment cost.…”

Section: ■ Introductionmentioning

confidence: 99%

“…The current situations of IFA melting and sintering are as follows. Melting methods include electrothermal and fuel melting with temperature ranges of 1300–1500 °C. , Plasma melting technology is an emerging electrothermal melting that can achieve the volume reduction (68.7–82.2%) and weight loss (23.8–56.7%) of IFA. , Sintering technology utilizes IFA as a raw material to produce ceramsite under 1100–1200 °C and offers a high destruction efficiency of dioxins and low investment cost. − Currently, IFA melting technologies are at the pilot scale while sintering technology has been in operation for many years. High-temperature process of melting and sintering consumes a large amount of energy and generates high-temperature flue gas .…”

Section: Introductionmentioning

confidence: 99%

Technology Innovation in Incinerator Fly Ash Sintering and Melting Brings Regional GHG Mitigation and Economic Benefits

Zhao,

Liu,

Wang

et al. 2024

ACS Sustainable Chem. Eng.

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Municipal solid waste incinerator fly ash (IFA) reutilization is energy-intensive with expenditure and secondary fly ash (Sec-FA) generation. Technology innovation and deployment are necessary for better IFA reutilization. Herein, potential benefits of technology innovation by fuel substitution, waste heat recovery and Sec-FA reuse of preferable plasma melting, fuel melting, and sintering technologies were evaluated by life cycle assessment (LCA) and life cycle costing (LCC). Results show that fuel melting and sintering could gain more environmental and economic benefits, respectively Technology innovation could bring environmental benefits and approximately 132 to 173 RMB/t IFA of economic profitability, among which waste heat recovery could gain 32–36% of economic optimization effect. A regional technology transition in China from plasma melting to fuel melting and technology innovation with waste heat and Sec-FA recovery shows GHG mitigation (0.48–0.79 Mt/yr) and economic benefits (322.21–537.02 million RMB/yr). Policy scenarios indicated that enterprise will lose approximately 360.70 RMB/t IFA if zero-subsidy is provided.

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“…Characteristics of chemical, material and dispersed composition of thermal power engineering waste predetermined wide possibilities for the use of TPP ashes and slag in the construction industry [1][2][3][4][5]. The feasibility and efficiency of using thermal power engineering waste in building materials' technology is confirmed by numerous developments [6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Technology of the porous granular material out of thermal power engineering waste

Miryuk

2024

E3S Web Conf.

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The article presents the results of resource-saving technology development of porous granular material. Research is devoted to the development of scientific ideas about highly porous structures formation. The research objective is to develop a low-energy technology for producing porous granules based on the multiple use of thermal power engineering waste. Research novelty lies in conformity with a principle of combined porous structure’s formation of granules during thermal swelling of molding sand based on technogenic materials. Mixture of liquid sodium glass, fly ash and ash aluminosilicate microsphere has been developed to obtain the granules. Techniques for granulating liquid glass mixture have been developed. The parameters for thermal treatment of granules have been established to ensure formation of a strong, porous, and water-resistant structure. Physicomechanical and thermal properties of porous granules fired at a temperature of 350°С were studied. Microstructure of the fired granules was studied; their porosity is of 78 – 80%, bulk density is 210 – 230 kg/m3, and the thermal conductivity coefficient is 0.084 – 0.085 W/(m·°С). There has been developed a technological scheme for production of a granular material based on finely dispersed thermal power engineering waste. Comparative analysis of characteristics of the developed material and expanded clay was carried out.

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Development of a loose powder sintering method for the preparation of porous ceramic from municipal solid waste incineration fly ash

Cited by 26 publications

References 52 publications

Preparation of porous ceramsite from municipal sludge and its structure characteristics

Preparation of porous ceramsite from municipal sludge and its structure characteristics

Technology Innovation in Incinerator Fly Ash Sintering and Melting Brings Regional GHG Mitigation and Economic Benefits

Technology of the porous granular material out of thermal power engineering waste

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