Manufacture of rich-sulfoaluminate belite cement at low temperature from waste mixture by dry and hydrothermal processes

Bouha, Faiza Nabila; Kacimi, Larbi; Torre, Ángeles G. De la

doi:10.1016/j.conbuildmat.2021.125641

Cited by 5 publications

(4 citation statements)

References 48 publications

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“…Furthermore, the environmental benefit of using CSA cement is improved as cement becomes an effective repository for waste materials that would otherwise be landfilled. Several successful trials have been made to produce BCSA cement, where waste materials including marble sludge, fly ash, aluminum anodizing sludge, and flue gas desulfurization sludge for their high lime, alumina, and sulfur trioxide contents were used [35][36][37][38][39]. Other types of waste materials such as metallurgical industry residues can be used to produce BCSAF cement where ferrite is an indispensable part [32,40].…”

Section: Clinkerization Processmentioning

confidence: 99%

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Recent progress and technical challenges in using calcium sulfoaluminate (CSA) cement

Tao

Rahul

Mohan

et al. 2023

Cement and Concrete Composites

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Section: Clinkerization Processmentioning

confidence: 99%

“…Compared to the clinkerization process, the hydrothermal-calcination process requires a lower temperature and less energy [39,42]. Some other advantages include finer particle sizes, higher surface area, and more homogeneous morphology [43].…”

Section: Hydrothermal-calcination Processmentioning

confidence: 99%

Recent progress and technical challenges in using calcium sulfoaluminate (CSA) cement

Tao

Rahul

Mohan

et al. 2023

Cement and Concrete Composites

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“…Uma estratégia para viabilizar esta produção é o uso de resíduos industriais ricos em alumínio como matériaprima na síntese dos clínqueres Juenger, 2012). Alguns exemplos de resíduos que já foram avaliados para este fim são cinzas volantes (Koga;Albert;Nogueira, 2020), lodos ricos em Al (Costa et al, 2016;Luz et al, 2009) e lama de vermelha (Nabila Bouha;Kacimi;. Como o uso de resíduos depende da disponibilidade regional, quanto mais resíduos avaliados maior a possibilidade de a indústria avaliar seu uso.…”

Section: Introductionunclassified

Hidratação na idade inicial de cimentos contendo ye’elemita (YCC) produzidos com catalisador gasto (SFCC)

Matos,

Andrade Neto,

Matos

et al. 2024

Ambient. constr.

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Resumo Diante dos impactos ambientais associados à produção do cimento Portland convencional, o estudo de cimentos especiais de reduzido impacto ambiental tem sido uma tendência. Neste contexto, os cimentos contendo ye’elimita (YCC) se destacam devido à baixa emissão de CO2. Apesar das vantagens ambientais, a alta demanda por alumínio limita economicamente a produção destes cimentos. Uma alternativa para viabilizar a sua produção é o uso de matérias-primas residuais como fonte de Al2O3, a exemplo do SFCC (catalizador gasto do craqueamento catalítico de leito fluidizado). Diante disso, este trabalho tem como objetivo avaliar a hidratação na idade inicial de cimentos YCC produzidos a partir do coprocessamento do SFCC. Para isso, foram produzidos seis clínqueres com diferentes teores de ye’elimita, com e sem SFCC. Estes foram caracterizados por DRX/Rietveld. As pastas foram avaliadas por TG/DTG e DRX/Rietveld para compreender o mecanismo de hidratação em idade inicial destes cimentos. Foi possível sintetizar as principais fases dos YCC, nos clínqueres com e sem SFCC. Além disso, na idade avaliada, as pastas com e sem SFCC apresentaram composição de fases comparáveis indicando o potencial de coprocessamento do SFCC neste tipo de cimento.

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“…This is evidenced by a reduction in CO 2 emissions by between 25% and 35%, as well as lower energy requirements compared to Portland cements. These benefits are mainly attributed to the low calcium carbonate requirement and the lower firing temperature, which oscillates around 1250 • C. This is because C 3 S is not the main phase of these cements [4,5]. Cements formed in the CaO-Al 2 O 3 -Fe 2 O 3 -SiO 2 -SO 3 or CaO-Al 2 O 3 -SiO 2 -SO 3 systems are typically rich in a phase referred to as "ye'elimite" or "Klein" [6,7].…”

Section: Introductionmentioning

confidence: 99%

Effect of Variable Synthesis Conditions on the Formation of Ye’elimite-Aluminate-Calcium (YAC) Cement and Its Hydration in the Presence of Portland Cement (OPC) and Several Accessory Additives

Durczak,

Pyzalski,

Brylewski

et al. 2023

Materials

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In the presented study, ye’elimite-aluminate-calcium (YAC) cement was synthesized. Complete synthesis of crystalline phases was achieved at a temperature of 1300 °C, which is 150 °C lower than the temperature standardly used in the processes of obtaining calcium aluminate cements (CAC). The greatest amount of ye’elimite phase (Klein complex), roughly 87% by mass, was acquired utilizing a sulphur ion transporter derived from artificial dihydrate gypsum obtained in the flue gas desulphurization process (variation I). In the case of anhydrite, the amount of synthesized crystalline ye’elimite in the clinker was 67% by weight (variant II). Depending on the synthesis conditions in the clinkers, the quantity of obtained calcium aluminates (C12A7, CA, and CA2) ranged from 20 to 40% by weight. Studies on the hydration process of YAC cement samples showed that the main products are hydrated calcium aluminates and dodecahydrate calcium alumino-sulphate. In sinters of YAC and OPC, no crystalline ettringite was observed. Hydration analysis of Chinese cement revealed the presence of crystalline ettringite and dodecahydrate calcium alumino-sulphate, as well as hydrated calcium silicates of the CSH type accompanied with pseudo-crystalline Al(OH)3. The obtained clinkers from variants I and II constitute a special binder, which, due to its phase composition after hydration, can be used in the construction of reactors for biogas production in eco-energy applications.

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Manufacture of rich-sulfoaluminate belite cement at low temperature from waste mixture by dry and hydrothermal processes

Cited by 5 publications

References 48 publications

Recent progress and technical challenges in using calcium sulfoaluminate (CSA) cement

Recent progress and technical challenges in using calcium sulfoaluminate (CSA) cement

Hidratação na idade inicial de cimentos contendo ye’elemita (YCC) produzidos com catalisador gasto (SFCC)

Effect of Variable Synthesis Conditions on the Formation of Ye’elimite-Aluminate-Calcium (YAC) Cement and Its Hydration in the Presence of Portland Cement (OPC) and Several Accessory Additives

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