Stability of ternesite and the production at scale of ternesite-based clinkers

Theodore Hanein; Isabel Galan; Fredrik P. Glasser; Solon Skalamprinos; Ammar Elhoweris; Mohammed S. Imbabi; Marcus N. Bannerman

doi:10.1016/j.cemconres.2017.04.010

Stability of ternesite and the production at scale of ternesite-based clinkers

Theodore Hanein, Isabel Galan, Fredrik P. Glasser, Solon Skalamprinos, Ammar Elhoweris, Mohammed S. Imbabi, Marcus N. Bannerman^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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Abstract

A method to synthesize high-purity ternesite at gram scale is presented and a brief description of the product morphology and reactivity is presented. Thermodynamic data for ternesite are derived from vapour pressure measurements and the limits of ternesite stability are explored. An upper temperature stability limit of ≈1290°C at 1 atm is determined; however, this temperature is dependent on the fugacity of the volatile components SO2 and O2 in the kiln atmosphere. Both thermodynamic predictions and lab experiments confirm that Calcium SulfoAluminate-Ternesite clinkers can be readily produced in a single stage process provided the atmosphere and temperature are controlled. To demonstrate this control at larger scales, a conventional 7.4-meter rotary kiln has been used to produce ≈20 kilograms of ternesite-containing clinkers. This demonstrates the usefulness of thermodynamic modelling as it has enabled ternesite based clinkers to be produced at scale in a single-stage process using existing equipment without major modifications.

Original language	English
Pages (from-to)	91-100
Number of pages	10
Journal	Cement and Concrete Research
Volume	98
Early online date	28 Apr 2017
DOIs	https://doi.org/10.1016/j.cemconres.2017.04.010
Publication status	Published - 1 Aug 2017

Keywords

Cement Manufacture (E)
Sulfoaluminate (D)
Thermodynamic Calculations (B)
Ternesite

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10.1016/j.cemconres.2017.04.010Licence: Unspecified

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© 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Accepted author manuscript, 85.9 KBLicence: CC BY-NC-ND

Marcus Campbell Bannerman
- Engineering, Engineering - Senior Lecturer
Person: Academic

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title = "Stability of ternesite and the production at scale of ternesite-based clinkers",

abstract = "A method to synthesize high-purity ternesite at gram scale is presented and a brief description of the product morphology and reactivity is presented. Thermodynamic data for ternesite are derived from vapour pressure measurements and the limits of ternesite stability are explored. An upper temperature stability limit of ≈1290°C at 1 atm is determined; however, this temperature is dependent on the fugacity of the volatile components SO2 and O2 in the kiln atmosphere. Both thermodynamic predictions and lab experiments confirm that Calcium SulfoAluminate-Ternesite clinkers can be readily produced in a single stage process provided the atmosphere and temperature are controlled. To demonstrate this control at larger scales, a conventional 7.4-meter rotary kiln has been used to produce ≈20 kilograms of ternesite-containing clinkers. This demonstrates the usefulness of thermodynamic modelling as it has enabled ternesite based clinkers to be produced at scale in a single-stage process using existing equipment without major modifications.",

keywords = "Cement Manufacture (E), Sulfoaluminate (D), Thermodynamic Calculations (B), Ternesite",

author = "Theodore Hanein and Isabel Galan and Glasser, {Fredrik P.} and Solon Skalamprinos and Ammar Elhoweris and Imbabi, {Mohammed S.} and Bannerman, {Marcus N.}",

note = "The authors gratefully acknowledge the financial support provided by the Gulf Organization for Research and Development (GORD), Qatar through research grant number ENG016RGG11757. The authors would also like to acknowledge Dr. Gabriel Jen for carrying out the sieve analysis presented in this work. The continuous support prior to, during, and after the pilot kiln trials from Vadym Kuznietsov and the entire team at IBU-tec is also greatly appreciated.",

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doi = "10.1016/j.cemconres.2017.04.010",

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T1 - Stability of ternesite and the production at scale of ternesite-based clinkers

AU - Hanein, Theodore

AU - Galan, Isabel

AU - Glasser, Fredrik P.

AU - Skalamprinos, Solon

AU - Elhoweris, Ammar

AU - Imbabi, Mohammed S.

AU - Bannerman, Marcus N.

N1 - The authors gratefully acknowledge the financial support provided by the Gulf Organization for Research and Development (GORD), Qatar through research grant number ENG016RGG11757. The authors would also like to acknowledge Dr. Gabriel Jen for carrying out the sieve analysis presented in this work. The continuous support prior to, during, and after the pilot kiln trials from Vadym Kuznietsov and the entire team at IBU-tec is also greatly appreciated.

PY - 2017/8/1

Y1 - 2017/8/1

N2 - A method to synthesize high-purity ternesite at gram scale is presented and a brief description of the product morphology and reactivity is presented. Thermodynamic data for ternesite are derived from vapour pressure measurements and the limits of ternesite stability are explored. An upper temperature stability limit of ≈1290°C at 1 atm is determined; however, this temperature is dependent on the fugacity of the volatile components SO2 and O2 in the kiln atmosphere. Both thermodynamic predictions and lab experiments confirm that Calcium SulfoAluminate-Ternesite clinkers can be readily produced in a single stage process provided the atmosphere and temperature are controlled. To demonstrate this control at larger scales, a conventional 7.4-meter rotary kiln has been used to produce ≈20 kilograms of ternesite-containing clinkers. This demonstrates the usefulness of thermodynamic modelling as it has enabled ternesite based clinkers to be produced at scale in a single-stage process using existing equipment without major modifications.

AB - A method to synthesize high-purity ternesite at gram scale is presented and a brief description of the product morphology and reactivity is presented. Thermodynamic data for ternesite are derived from vapour pressure measurements and the limits of ternesite stability are explored. An upper temperature stability limit of ≈1290°C at 1 atm is determined; however, this temperature is dependent on the fugacity of the volatile components SO2 and O2 in the kiln atmosphere. Both thermodynamic predictions and lab experiments confirm that Calcium SulfoAluminate-Ternesite clinkers can be readily produced in a single stage process provided the atmosphere and temperature are controlled. To demonstrate this control at larger scales, a conventional 7.4-meter rotary kiln has been used to produce ≈20 kilograms of ternesite-containing clinkers. This demonstrates the usefulness of thermodynamic modelling as it has enabled ternesite based clinkers to be produced at scale in a single-stage process using existing equipment without major modifications.

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KW - Sulfoaluminate (D)

KW - Thermodynamic Calculations (B)

KW - Ternesite

U2 - 10.1016/j.cemconres.2017.04.010

DO - 10.1016/j.cemconres.2017.04.010

M3 - Article

VL - 98

SP - 91

EP - 100

JO - Cement and Concrete Research

JF - Cement and Concrete Research

SN - 0008-8846

ER -

Stability of ternesite and the production at scale of ternesite-based clinkers

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Marcus Campbell Bannerman

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