Melting characteristics during the vitrification of MSW incinerator fly ash by swirling melting treatment

Wang, Xuetao; Jin, Baosheng; Xu, Bin; Lan, Weijuan; Qu, Chengrui

doi:10.1007/s10163-015-0449-9

Cited by 45 publications

(10 citation statements)

References 33 publications

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“…The main components of secondary fly ash collected from fabric filter bags were metal salts such as NaCl and KCl. Similar results were obtained by Wang et al [31] for a pilot-scale swirling melting system at the melting temperature of 1250-1400 °C. This indicates that Cr and Ni can be better solidified in melting slag, whereas the highly volatile heavy metals such as Hg, Cd, Pb, and Zn are difficult to stabilize.…”

Section: Fuel-burning Melting/vitrificationsupporting

confidence: 89%

“…The disposal of fly ash by heat treatment consumes external energy to create a high-temperature atmosphere. The organic matter in the fly ash is burnt, and the inorganic substance forms harmless slag, in which the heavy metals are confined [29][30][31]. The thermal treatment can be divided into sintering [32] and melting/vitrification [33], depending on the processing temperature.…”

Section: Introductionmentioning

confidence: 99%

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Review of harmless treatment of municipal solid waste incineration fly ash

Zhang

Fang

et al. 2020

Waste Dispos. Sustain. Energy

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Incineration is widely adopted in municipal solid waste management, which produces large amounts of municipal solid waste incineration (MSWI) fly ash. The harmless treatment of MSWI fly ash requires the appropriate disposal of heavy metals and dioxins that are enriched in fly ash. This review summarizes recently developed harmless disposal methods for MSWI fly ash including solidification/stabilization, thermal treatment, and separation/extraction. In addition, we discuss heavy metal and dioxin fixation, and the removal capacity of fly ash via solidification/stabilization (including cement solidification, chemical stabilization, hydrothermal processes, and mechano-chemical methods), thermal treatment (including sintering, fuel-burning, or electric melting/vitrification), and separation/extraction (including water-washing, chemical reagent leaching, biological leaching, electrodialysis separation, chemical reagent extraction, and nanomaterials extraction). The advantages and disadvantages of different harmless treatment methods are compared and future research prospects and suggestions are summarized. This review provides general guidelines for the harmless treatment of MSWI fly ash in the future.

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Section: Fuel-burning Melting/vitrificationsupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Review of harmless treatment of municipal solid waste incineration fly ash

Zhang

Fang

et al. 2020

Waste Dispos. Sustain. Energy

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“…However, after exceeding 1000°C, SiO 2 can combine with other oxides such as Al 2 O 3 and CaO, giving new silicates, aluminosilicates, and calcium silicates. [ 52 ]…”

Section: Resultsmentioning

confidence: 99%

Effect of fly ash and coupling agent on the structural, morphological, thermal, and mechanical properties of polyamide 6/acrylonitrile‐butadiene‐styreneblend

et al. 2021

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In the present study, coal fly ash (FA) was used as a reinforcement in a thermoplastic matrix blend of polyamide 6/acrylonitrile‐butadiene‐styrene (PA/ABS). In the first part of this work, the as‐received FA (raw FA) was sieved with a 25 μm sieve to obtain FA with particle size less than 25 μm (FA). Then, the physicochemical properties of the raw FA and the FA were determined. Afterwards, FA was used to prepare a masterbatch of 20 wt% FA and 80 wt% PA by twin‐screw extrusion. Using this masterbatch, composites with different FA contents (4.5, 9, 14, and 18.5 wt%), with and without styrene‐(ethylene‐butylene)‐styrene grafted with maleic anhydride (SEBS‐g‐MA) (S‐g‐M), were produced by extrusion, which was followed by injection molding. Subsequently, several characterization techniques were performed to investigate the effect of FA loading and the S‐g‐M coupling agent on the structural, morphological, thermal, and mechanical properties of the developed composites. The results showed that incorporating FA particles in the matrix blend improved the thermal stability and crystallinity, the Young's modulus, the tensile strength, and torsional properties of the composites. In contrast, the addition of S‐g‐M coupling agent to the polymer composites improved the interfacial adhesion between FA particles and the matrix blend. This further enhanced the structural, morphological, thermal, and mechanical properties of the polymer composites. Overall, the use of FA as an inorganic filler improves the thermal and mechanical properties of polymer composites and shows a potential for promising applications.

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“…In this regard, a detailed study is presented by [82], which summarizes the properties of fuel burning and electric melting/vitrification furnaces and systems. The volatilization of heavy metals during melting/vitrification processes is studied by several researchers [165][166][167][168][169]. The low volatile heavy metals are transformed and solidified in the dense lattice structure of melted slag, thereby reducing their leaching rate.…”

Section: Melting/vitrificationmentioning

confidence: 99%

Incineration Fly Ash and Its Treatment to Possible Utilization: A Review

2020

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Incineration has gained popularity over landfill as a key solution for the reduction of massively increasing volumes of municipal solid waste (MSW) generation worldwide and in particular China. However, it is not the end solution. The disposal of the incineration residues, which are enriched with a wide range of heavy metals and soluble salts, has become a challenge for the environmental managers. The aim of this study was to review the increasing urbanization and its repercussion on waste generation in China; waste management options were compared for possible environmentally friendly considerations. Treatment techniques of incineration fly ash were discussed to determine the effectiveness of obtaining environmentally stable material, and, finally, possible applications of incineration fly ash for utilization were discussed based on identifying the processing suitability, performance and environmental impact of incineration fly ash for its applications.

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Melting characteristics during the vitrification of MSW incinerator fly ash by swirling melting treatment

Cited by 45 publications

References 33 publications

Review of harmless treatment of municipal solid waste incineration fly ash

Review of harmless treatment of municipal solid waste incineration fly ash

Effect of fly ash and coupling agent on the structural, morphological, thermal, and mechanical properties of polyamide 6/acrylonitrile‐butadiene‐styreneblend

Incineration Fly Ash and Its Treatment to Possible Utilization: A Review

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