Microstructural characterization of PM-Al and PM-Al/Si composites reinforced with lignite fly ash

Itskos, Grigorios; Vounatsos, Panagiotis; Koukouzas, Nikolaos; Vasilatos, Charalampos

doi:10.1016/j.msea.2010.04.001

Cited by 22 publications

(9 citation statements)

References 19 publications

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“…Lignite coal fly ash blended with waste glass was successfully tested in the manufacture of lightweight aggregates [13]. Lignite fly ash with a high calcium content and used in a fly ash reinforced aluminum based metal matrix composite developed a good hardness due to the increased complex Si-and Ca-Si-crystalline phases produced [14]. A high Ca fly ash (CaO > 30%) has been used as a starting material when a hydrothermal calcination process is used as the pathway of the belite synthesis [15].…”

Section: Introductionmentioning

confidence: 99%

Fly Ash Formation and Characteristics from (co-)Combustion of an Herbaceous Biomass and a Greek Lignite (Low-Rank Coal) in a Pulverized Fuel Pilot-Scale Test Facility

et al. 2018

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The lignite boilers are designed for lower quality fuels, and often the ash is not utilized. This work assessed the impact of combustion of an herbaceous biomass with a low-quality Greek lignite on the quality of the resulting fly ash. Test results were compared with those of fly ash samples from an industrial facility using the same fuel qualities. Inductively coupled plasma-optical (ICP) emission spectroscopy, X-ray powder diffraction (XRD), and scanning electron microscope (SEM) analyses were performed on the collected samples. Despite the significantly higher contents of K, Na and S in the biomass, at a 50% co-firing thermal share, the major and minor oxides in the fly ash were comparable to the lignite fly ash quality. This is attributed to the high ash content of the lignite, the low ash content of the biomass, and the much higher heating value of the biomass. There were improvements in fly ash performance characteristics with the herbaceous biomass in the fuel blend. The initial setting time and volume stability evaluations were improved with the biomass in the fuel blend. The work supports efforts of good practices in ash management, social responsibility, a circular economy, power plant renewable energy operations, and co-firing herbaceous biomass fuels in lignite power plants.

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Section: Introductionmentioning

confidence: 99%

Fly Ash Formation and Characteristics from (co-)Combustion of an Herbaceous Biomass and a Greek Lignite (Low-Rank Coal) in a Pulverized Fuel Pilot-Scale Test Facility

et al. 2018

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“…They demonstrated that the proper selection of the compact pressure plays a vital role in PM, as increasing the compact pressure beyond a critical threshold leads to progressive collapse of cenospheres, which results to reduce porosity. In a similar study, Hrairi et al [16] evaluated the mechanical as well as the acoustic properties of fly ash-Al MMCs made by PM, while Moutsatsou et al [17] examined the microstructure of PM-composites reinforced with fly ash particles showing the presence of superficial clusters.…”

Section: Introductionmentioning

confidence: 99%

Aluminum–ceramic cenospheres syntactic foams produced by powder metallurgy route

et al. 2015

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“…The better cementitious properties of Class C (highly calcareous) fly ash compared to class F fly ash (siliceous, CaO content \10 in weight per cent) are considered to be a disadvantage for manufacturing fired bricks or generally ceramic products [8,18] (although they have been successfully utilised as reinforcement materials in metal-based composites [19]). In the case of Ca-rich fly ash (in the form of either CaO or Ca(OH) 2 ), pyretic sulphur can be captured from clays reducing air pollution.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of CFB-Coal Fly Ash Clay Bricks and Their Characterisation

Koukouzas

Ketikidis

Itskos

et al. 2010

Waste Biomass Valor

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The aim of this work was to test CFB-derived fly ash for its potential to get utilised in ceramic tilesmanufacturing by applying the sintering technique. The tested specimens were moulded using extrusion and fired at 1,050°C; a laboratory pilot-plant simulation of the industrial brick fabrication process was applied and the produced materials were afterwards tested for their microstructure and physical properties. Different types of clays were selected and characterised and various clay-ash mixtures were prepared. Plasticity after mixing with water as well as extrusion of the compact specimens and their drying behaviour were evaluated. Water absorption and mechanical strength of fired specimens were determined and evaluated as a function of the percentage FA content. Results showed that large-scale production of CFB FAcontaining bricks is feasible, as their mechanical properties were not significantly harmed, while any possible detrimental effect on the other properties of the synthetic bricks appeared to be relatively restricted.

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Microstructural characterization of PM-Al and PM-Al/Si composites reinforced with lignite fly ash

Cited by 22 publications

References 19 publications

Fly Ash Formation and Characteristics from (co-)Combustion of an Herbaceous Biomass and a Greek Lignite (Low-Rank Coal) in a Pulverized Fuel Pilot-Scale Test Facility

Fly Ash Formation and Characteristics from (co-)Combustion of an Herbaceous Biomass and a Greek Lignite (Low-Rank Coal) in a Pulverized Fuel Pilot-Scale Test Facility

Aluminum–ceramic cenospheres syntactic foams produced by powder metallurgy route

Synthesis of CFB-Coal Fly Ash Clay Bricks and Their Characterisation

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