Production of glass–ceramics using Municipal solid waste incineration fly ash

Fan, Wendi; Liu, Bo; Luo, Xun; Yang, Jian; Bin, Guo; Zhang, Shengen

doi:10.1007/s12598-017-0976-8

Cited by 39 publications

(7 citation statements)

References 27 publications

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“…The incineration fly-ash (IFA) collected from air pollution control devices in the incinerator, classified as hazardous waste, grows significantly and reached over 10 million tons per year in China by 2019 . Currently, a significant proportion of IFA is disposed of in landfills and poses non-negligible potential drawbacks that include potential leaching risk, landfill space shortage, and massive consumption of chelating agents and cement. , On the other hand, the compositions of IFA are rich in CaO, SiO 2 , and Al 2 O 3 , showing potential utilization as secondary construction materials. − Consequently, various types of IFA utilization technology have been explored in the laboratory scale, pilot scale, and industrial application. IFA utilization technologies include high-temperature thermal processing methods such as plasma transforming IFA into an inert waste form, − cement kiln coprocessing to produce clinkers, − and nonthermal processing methods such as prewashing detoxification to partly substitute cementitious materials for manufacturing construction products. , Additionally, since transition metals such as Zn, Pb, and Cd accumulated in IFA, metal separation and recovery with chemical extraction or high-temperature volatilization methods are also one of the hot topics.…”

Section: Introductionmentioning

confidence: 99%

Toward a Sustainable Municipal Solid Waste Incineration Fly-Ash Utilization Network: Integrating Hybrid Life Cycle Assessment with Multiobjective Optimization

Wang

Dong

Liu

et al. 2022

ACS Sustainable Chem. Eng.

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A utilization network optimization model toward sustainable municipal solid waste incineration fly-ash (IFA) management is first established with the integration of hybrid life cycle assessment (HLCA) and multiobjective optimization (MOO), taking Shanghai as a case. For technology selection, we focus on two emerging nonthermally processed IFA utilization technologies and the most widely used cement kiln coprocessing. By HLCA results, byproduct offsetting could significantly improve the environmental performance of IFA utilization ways, while nonthermal utilization has much lower global warming potential than cement kiln coprocessing, regardless of the allocation of byproducts or not. By combining HLCA with MOO, the trade-off solutions on the Pareto curve provide optimal decision-making alternatives for the IFA utilization network under multifactor constraints, including technology selection, site location, feedstock supplier, logistics under capacity constraints, and planning restrictions. The results show that the mixed use of IFA-to-brick and wastewater discharge and IFA-to-brick and salt technology would be the most preferable choice from a climate perspective, while IFA-to-brick and salts would be the most profitable one. In addition, since the market acceptance of nonthermally processed byproducts will affect the optimization results through price shocks, additional marketing policies and industrial symbiosis approaches are essential to develop sustainable IFA utilization technology under win-win targets of environment and economy.

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Section: Introductionmentioning

confidence: 99%

Toward a Sustainable Municipal Solid Waste Incineration Fly-Ash Utilization Network: Integrating Hybrid Life Cycle Assessment with Multiobjective Optimization

Wang

Dong

Liu

et al. 2022

ACS Sustainable Chem. Eng.

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“…Compared with traditional ceramics and glass, glass-ceramics have many outstanding characteristics, including high mechanical strength, thermal shock resistance, wear resistance, chemical corrosion resistance and so on [5,6] . In recent years, many scholars have prepared glassceramics from different types of solid wastes [7] , such as iron and steel smelting waste residue [6,8,9] , fly ash [10][11][12] and waste glass [13] .…”

Section: Introductionmentioning

confidence: 99%

Study on a new process and its kinetics of iron recovery and glass-ceramics preparation from desulfurization slag

Tong

Sun

Liu

et al. 2022

J min metall B Metall

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This paper creatively proposes a new process with desulfurization slag leached by ammonium chloride as pretreatment, and the main point of this paper lies in the processing of desulfurization residue leached by ammonium chloride. Through component analysis, the formula is adjusted with high aluminum coal ash and glass cullet, making the melting point of the reduction slag is around 1200?C, which facilitates the separation of iron and slag, at the same time, the reduction slag is adjusted to the target crystallization phase, so that the high temperature reduction slag after carbon thermal reduction can be used to produce glass-ceramics directly. The results show that iron recovery rate is over 99%, and diopside and nepheline glass-ceramics are produced, which show that the new process is feasible. However, the crystal growth index is less than 3, which means that the crystallization capacity of the glass-ceramics is low, and nucleating agent is needed in the preparation of glass-ceramics.

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“…Fly ash is a powdered solid waste discharged from coal-fired thermal power plants after burning pulverized coal, whose reserves are huge and inexpensive (Nath and Sarker, 2015;Fang et al, 2018;Fu et al, 2018;Fan et al, 2019). As a substitute for filling cementing material, fly ash can reduce the cost of filling, improve the strength of the backfill, and create good economic and social benefits (Azmee and Shafiq, 2019;Ardahanli et al, 2021;Zafar and Alqahtani, 2021).…”

Section: Introductionmentioning

confidence: 99%

Study on the Optimization of Filling Ratio and Strength Variation Characteristics of Cemented Backfills Containing Fly Ash

Chang

Chu³

et al. 2021

Front. Mater.

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The fly ash for underground filling can effectively utilize solid waste, improve the strength of the backfill, and reduce the cost, thus creating good social and economic benefits. Relying on the filling requirements of a gold mine in Jilin, this paper carried out the filling ratio experiments containing fly ash and analyzed the reasons for the variation of the backfill strength based on the hydration characteristics of cement and fly ash and scanning electron microscope. The results show that fly ash has an overall effect on the strength of the backfill, and the strength development is mainly concentrated in the period of 28–56 d; when the filling slurry contains tailings, the excessive amount of fly ash is likely to cause a large number of fine particles to obstruct the hydration of cementitious materials; when the concentration of the filling slurry is 74%, the cement content is 5%, the mass ratio of waste rock-tailings-fly ash is 6:2:3, and the CaO content is 6:3, the strength of the backfill is significantly higher than the current strength of the backfill of the mine, and the cost can be saved by RMB 0.56 per cubic meter; the strength characteristics of the backfill mainly depend on the pore structure; when the filling slurry is better matched, the cement and fly ash hydration generates a large number of C-S-H gel particles, which wraps the aggregate to form a dense structure with less pore structure, and the strength of the backfill increases; the strength variation process of backfill containing cement and fly ash is divided into cement hydration period, fly ash infiltration period, and slurry hardening period. To enhance the strength of the backfill, it is necessary to determine the appropriate cementitious material ratio to maximize the excitation of fly ash hydration during the fly ash infiltration period, and the hydration produces a gel structure with an excellent aggregate ratio. In addition, the slurry hardening reduces the porosity of the backfill. The results can provide basic data and theoretical guidance for further promotion and application of fly ash in mine filling.

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Production of glass–ceramics using Municipal solid waste incineration fly ash

Cited by 39 publications

References 27 publications

Toward a Sustainable Municipal Solid Waste Incineration Fly-Ash Utilization Network: Integrating Hybrid Life Cycle Assessment with Multiobjective Optimization

Toward a Sustainable Municipal Solid Waste Incineration Fly-Ash Utilization Network: Integrating Hybrid Life Cycle Assessment with Multiobjective Optimization

Study on a new process and its kinetics of iron recovery and glass-ceramics preparation from desulfurization slag

Study on the Optimization of Filling Ratio and Strength Variation Characteristics of Cemented Backfills Containing Fly Ash

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