Reduction of Burning Temperature of Cement Clinker by Adjusting of Mineral Composition

Chabayashi, Takashi; Nagata, Hiroshi; Nakamura, Akinori; Kato, Hidemi

doi:10.14250/cement.66.217

Cited by 4 publications

(2 citation statements)

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“…Authors' previous study has reported that compared to the other components of the clinker, the ferrite phase contributes the most to the sintering of the clinker, and the contributions of the various components to clinker burnability is in the order, C 4 AF>C 3 A>C 2 S>C 3 S (Chabayashi et al, 2012(Chabayashi et al, , 2015. A low-burning-temperature clinker, which sinters at 1,350 • C, which is ∼100 • C lesser than temperature required for the OPC clinker, was produced by increasing the C 4 AF and decreasing the C 2 S proportions while targeting a strength equal to that of the conventional OPC.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Ferrite-Rich Portland Cement: Comparison With Ordinary Portland Cement

et al. 2019

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Section: Introductionmentioning

confidence: 99%

Characteristics of Ferrite-Rich Portland Cement: Comparison With Ordinary Portland Cement

et al. 2019

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“…However, the addition of iron can lead to the decomposition of ye'elimite, as a loss of SO 2 already occurs at lower processing temperatures (Puertas et al, 1995;el Khessaimi et al, 2018;Bullerjahn et al, 2020;Yao et al, 2020). It is also reported that the iron content enhances the formation of alite at lower temperatures (Chabayashi et al, 2012;Lu et al, 2018;Hanein et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

The Effect of Fluoride and Iron Content on the Clinkering of Alite-Ye’elimite-Ferrite (AYF) Cement Systems

Isteri

Ohenoja

Hanein

et al. 2021

Front. Built Environ.

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Alite–ye’elimite–ferrite (AYF) cement is a more sustainable alternative to Portland cement (PC) that may offer improved mechanical, rheological, and chemical performance. Using traditional raw materials and conventional clinker processing conditions, alite (C3S) and ye’elimite (C4A3$), the major phases in PC and calcium sulfoaluminate (CSA) cements, respectively, cannot be coproduced. The typical formation temperature in the kiln for alite is >1350°C, but ye’elimite normally breaks down above 1300°C. However, with careful composition control and in the presence of fluoride, alite can be mineralized and formed at lower temperatures, thus enabling the production of AYF clinkers in a single stage. In this study, the production of AYF cement clinkers with different chemical compositions is attempted at 1250°C. The sensitivity of the fluoride content is initially assessed with a fixed target clinker composition to determine the optimal requirements. The effect of altering the target ferrite (C4AF) and alite (C3S) contents is also assessed followed by the effect of altering the target C4AF and C4A3$ contents. It is shown that AYF clinkers can be produced in a single stage through the careful control of the fluoride content in the mix; however, the formation/persistence of belite and mayenite could not be avoided under the conditions tested. It is also shown that ∼10 wt% ferrite in the target composition provides sufficient AYF clinker burnability and the amount of fluoride needs to be controlled to avoid stabilization of mayenite.

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Early-Age Hydration of an EAF Slag Based Alite–Ferrite Cement Clinker in the Presence of Na2CO3

et al. 2023

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Reduction of Burning Temperature of Cement Clinker by Adjusting of Mineral Composition

Abstract: KEY WORDS

Cited by 4 publications

References 1 publication

Characteristics of Ferrite-Rich Portland Cement: Comparison With Ordinary Portland Cement

Characteristics of Ferrite-Rich Portland Cement: Comparison With Ordinary Portland Cement

The Effect of Fluoride and Iron Content on the Clinkering of Alite-Ye’elimite-Ferrite (AYF) Cement Systems

Early-Age Hydration of an EAF Slag Based Alite–Ferrite Cement Clinker in the Presence of Na2CO3

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