The mechanism of corrosion of Aluminium Zirconium Silicate (AZS) material in the float glass furnace regenerator

George, Sharon; Haycock, P.W.; Ormerod, R. Mark

doi:10.1016/j.jeurceramsoc.2017.12.006

Cited by 10 publications

(7 citation statements)

References 17 publications

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“…The results of the literature review [31,32] and our initial studies [29] evidence, that namely aluminium and silicon oxides reveal Na-capturing capability (capable to "capture" alkali metal). In our case, they are supplied namely by a large amount of aluminium oxide and by a suffi cient amount of silicon oxide of the initial blend -additionally due to lean coal.…”

Section: Fig 4 Possible Mechanism Of Ash Deposition During Combustion...mentioning

confidence: 92%

“…The results obtained on the formation of nephelines, ultramarines and other complex minerals are confi rmed by the stud- ies by scientists from other countries. Thus, in [31,32] the following scheme of formation of similar compounds was described: An approximate evaluation of technological and power indices of coal blends (50 : 50) demonstrates that the ash content of fuel will amount to 811 % when the content of chlorine in the blend will be up to 0.32 % and sodium oxide in the ash will be less than 1.3 %. The Na/(Si  Al) ratio will not exceed the critical value of 0.05, and the value of Fe/(Si  Al) will be less than the critical 0.2.…”

Section: Fig 4 Possible Mechanism Of Ash Deposition During Combustion...mentioning

confidence: 99%

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Phenomena and mechanism of slagging and corrosion in energy use of coal with a high content of salts

Shendrik¹,

Dunayevska²,

Fateyev³

et al. 2022

Nauk. visn. nat. hirn. univ.

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Purpose. Determination of the main mechanisms of slagging and corrosion of heating surfaces when using coal or other raw materials with a high content of alkali and alkaline earth metals. Experimental determination of mineral phases of ash residues of burning composite raw materials with the participation of salty coal and the influence of component composition on the formation of refractory compounds. Methodology. Critical analysis and generalization of achievements in the developed theories of slagging and corrosion of surfaces during the combustion of problematic carbon raw materials (salty coal, biomass, some wastes, etc.). Determination of the main approaches to the problem of using coal with a high pollution factor. Selection of objects of experimental study on composite raw materials, including coal of different degrees of metamorphism and salinity. Identification of minerals of ash residues of individual fuels and their blends using X-ray phase analysis (X-ray diffraction). Semi-quantitative phase analysis of diffractograms was performed using MATCH! software. Findings. Modern views on the causes of slagging and corrosion processes during the combustion of fuel with a high salt content are highlighted. It has been determined that the process of intensive slagging is associated with a certain ratio of sodium, calcium and iron compounds. The composition and features of the mineral phases of ash residues of composite fuel with the participation of salty coal are experimentally established. The influence of the content of components on the formation of certain mineral phases of mixed ash was determined. Originality. For the first time, the prospects of using two-component blended fuel with the participation of Ukrainian salty coal have been studied. The analysis of minerals in ash residues of salty coal and its blends was carried out. It has been determined that the main part of Na in ash of salty coal of the Bohdanivske deposit in the Northern Donbas is in the form of sulfates and silicates. For the first time, the composition and ways of formation of new refractory mineral compounds in the ash formed during the combustion of composite fuel from coal of different metamorphism and salinity have been established. Practical value. Based on the analysis of literary sources and conducted studies, the dependence of the ash composition on the minerals of the initial fuel and on the ratio of various components in the blends was determined. The proposed approach has a predictive power, as it allows predicting the formation of the main refractory ash minerals. The expediency and prospects of involving salty coal in the fuel base of Ukraine as a component of blended fuels are shown.

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Section: Fig 4 Possible Mechanism Of Ash Deposition During Combustion...mentioning

confidence: 92%

Section: Fig 4 Possible Mechanism Of Ash Deposition During Combustion...mentioning

confidence: 99%

Phenomena and mechanism of slagging and corrosion in energy use of coal with a high content of salts

Shendrik¹,

Dunayevska²,

Fateyev³

et al. 2022

Nauk. visn. nat. hirn. univ.

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“…As a result, the obtained materials consist of alumina and zirconia distributed in the silica glassy matrix. A typical AZS composition includes (wt.%) Al 2 O 3 45–50, ZrO 2 33–40, SiO 2 13–16, CaO + Na 2 O 1.2–1.5 83–85 . The materials’ benefit includes, in addition to high refractoriness, hardness and corrosion resistance, low shrinkage, that is, the near‐net shape components, such as piping and elbow sections, cones, curved and flat tiles, and blocks, and others can be produced.…”

Section: Major Advanced Ceramic Composite or Coating Materials For Pr...mentioning

confidence: 99%

Advanced ceramics and coatings for erosion‐related applications in mineral and oil and gas production: A technical review

Medvedovski¹

2022

Int J Applied Ceramic Tech

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The applications of advanced ceramics, composites and coatings in mineral, mining, fuel production, and processing are reviewed. The materials include oxide and non‐oxide ceramics (specifically SiC‐based), ceramic–ceramic, and ceramic–metal composites, coatings on metallic components where functional application properties can be achieved. Some principles of materials selection, specifically for erosion wear and corrosion applications, and manufacturing are considered. The examples of the successful development and processing of ceramics, coatings, and composites with manageable structures and phase compositions, in the erosion‐related applications, particularly conducted by the author, are discussed and reviewed. Specifically, industrially employed types of ceramics and processing routes were focused on the considered applications. Particular demands for advanced materials with high reliability and complex shapes or for protective coatings on complex shape steel components and long tubing with inner surface protection require novel and optimized processing. The factors affecting erosion and erosion–corrosion resistance and the paths for the erosion resistance enhancement of ceramic and coating materials are considered. Ceramic components design, technology, and installation features are reviewed.

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“…Результати огляду літературних джерел [15,16] та наші оригінальні дослідження [12] свідчать, що саме оксиди алюмінію і кремнію проявляють Nacapturing capability -здатність до «захоплення» лужного металу. Їхнім постачальником у нашому випадку є як раз велика кількість оксиду алюмінію та достатня -оксиду кремнію вихідної суміші.…”

Section: Thermal Energy Technology Institute Of the Nasuunclassified

“…Їхнім постачальником у нашому випадку є як раз велика кількість оксиду алюмінію та достатня -оксиду кремнію вихідної суміші. Отримані результати щодо утворення нефелінів, ультрамаринів та інших складних мінералів підтверджуються дослідженнями вчених інших країн [15,16].…”

Section: Thermal Energy Technology Institute Of the Nasuunclassified

ТЕПЛОВА ЕНЕРГЕТИКА: ШЛЯХИ РЕНОВАЦІЇ ТА РОЗВИТКУ XVІІІ Міжнародна Науково-Практична Конференція ЗБІРКА НАУКОВИХ ПРАЦЬ

2022

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The mechanism of corrosion of Aluminium Zirconium Silicate (AZS) material in the float glass furnace regenerator

Cited by 10 publications

References 17 publications

Phenomena and mechanism of slagging and corrosion in energy use of coal with a high content of salts

Phenomena and mechanism of slagging and corrosion in energy use of coal with a high content of salts

Advanced ceramics and coatings for erosion‐related applications in mineral and oil and gas production: A technical review

ТЕПЛОВА ЕНЕРГЕТИКА: ШЛЯХИ РЕНОВАЦІЇ ТА РОЗВИТКУ XVІІІ Міжнародна Науково-Практична Конференція ЗБІРКА НАУКОВИХ ПРАЦЬ

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