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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 is presented and the importance of reaction volume is highlighted; a brief description of the product morphology is also presented. Thermodynamic data for ternesite are derived and the limits of ternesite stability are then 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 in the atmosphere. Thermodynamic predictions confirm that belite and ternesite rich calcium sulfoaluminate clinkers can be readily produced in a single stage process at temperatures above 1200 °C 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 kg of ternesite-containing clinkers. This demonstrates the usefulness of thermodynamic modelling as it has enabled ternesite-based clinkers to be readily produced at scale in a single-stage process using existing equipment without major modifications.

Authors:
 [1]; ; ; ;  [2];  [1];  [1]
  1. School of Engineering, University of Aberdeen, AB24 3UE (United Kingdom)
  2. Department of Chemistry, University of Aberdeen, AB24 3UE (United Kingdom)
Publication Date:
OSTI Identifier:
22697119
Resource Type:
Journal Article
Journal Name:
Cement and Concrete Research
Additional Journal Information:
Journal Volume: 98; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0008-8846
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ATMOSPHERES; CALCIUM; CEMENTS; CONTROL; FORECASTING; IMPURITIES; KILNS; METERS; MODIFICATIONS; MORPHOLOGY; SCALERS; SIMULATION; STABILITY; THERMODYNAMICS; VOLATILITY

Citation Formats

Hanein, Theodore, Galan, Isabel, Glasser, Fredrik P., Skalamprinos, Solon, Elhoweris, Ammar, Imbabi, Mohammed S., and Bannerman, Marcus N., E-mail: m.campbellbannerman@abdn.ac.uk. Stability of ternesite and the production at scale of ternesite-based clinkers. United States: N. p., 2017. Web. doi:10.1016/J.CEMCONRES.2017.04.010.
Hanein, Theodore, Galan, Isabel, Glasser, Fredrik P., Skalamprinos, Solon, Elhoweris, Ammar, Imbabi, Mohammed S., & Bannerman, Marcus N., E-mail: m.campbellbannerman@abdn.ac.uk. Stability of ternesite and the production at scale of ternesite-based clinkers. United States. doi:10.1016/J.CEMCONRES.2017.04.010.
Hanein, Theodore, Galan, Isabel, Glasser, Fredrik P., Skalamprinos, Solon, Elhoweris, Ammar, Imbabi, Mohammed S., and Bannerman, Marcus N., E-mail: m.campbellbannerman@abdn.ac.uk. Tue . "Stability of ternesite and the production at scale of ternesite-based clinkers". United States. doi:10.1016/J.CEMCONRES.2017.04.010.
@article{osti_22697119,
title = {Stability of ternesite and the production at scale of ternesite-based clinkers},
author = {Hanein, Theodore and Galan, Isabel and Glasser, Fredrik P. and Skalamprinos, Solon and Elhoweris, Ammar and Imbabi, Mohammed S. and Bannerman, Marcus N., E-mail: m.campbellbannerman@abdn.ac.uk},
abstractNote = {A method to synthesize high-purity ternesite is presented and the importance of reaction volume is highlighted; a brief description of the product morphology is also presented. Thermodynamic data for ternesite are derived and the limits of ternesite stability are then 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 in the atmosphere. Thermodynamic predictions confirm that belite and ternesite rich calcium sulfoaluminate clinkers can be readily produced in a single stage process at temperatures above 1200 °C 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 kg of ternesite-containing clinkers. This demonstrates the usefulness of thermodynamic modelling as it has enabled ternesite-based clinkers to be readily produced at scale in a single-stage process using existing equipment without major modifications.},
doi = {10.1016/J.CEMCONRES.2017.04.010},
journal = {Cement and Concrete Research},
issn = {0008-8846},
number = ,
volume = 98,
place = {United States},
year = {2017},
month = {8}
}