Phase evolution and burnability of cement raw meal-Reference-Cited by-同舟云学术

Phase evolution and burnability of cement raw meal

Published:2023-12-01 Issue:12 Volume:35 Page:577-587
ISSN:0951-7197
Container-title:Advances in Cement Research
language:en
Short-container-title:Advances in Cement Research

Author:

Aguirre Castillo José¹^ORCID,Broström Markus²^ORCID,Eriksson Matias³^ORCID

Affiliation:

1. Doctoral student, Centre for Sustainable Cement and Quicklime Production, Department of Applied Physics and Electronics, Umeå University, Umeå, Sweden; Thermochemical Energy Conversion Laboratory, Department of Applied Physics and Electronics, Umeå University, Umeå, Sweden; Heidelberg Materials Cement Sverige AB, Slite, Sweden (corresponding author: )

2. Professor, Centre for Sustainable Cement and Quicklime Production, Department of Applied Physics and Electronics, Umeå University, Umeå, Sweden; Thermochemical Energy Conversion Laboratory, Department of Applied Physics and Electronics, Umeå University, Umeå, Sweden

3. Adjunct Associate Professor, Centre for Sustainable Cement and Quicklime Production, Department of Applied Physics and Electronics, Umeå University, Umeå, Sweden; Thermochemical Energy Conversion Laboratory, Department of Applied Physics and Electronics, Umeå University, Umeå, Sweden; Swedish Mineral Processing Research Association (MinFo), Stockholm, Sweden

Abstract

The use of high-temperature X-ray diffraction (HT-XRD) to study the mass transfer of raw meal constituents towards forming clinker phases and the occurrence of free lime (calcium oxide), also known as burnability, was assessed. A measuring strategy with temperature ranging from 1000°C to 1450°C was developed and compared with a conventional burnability method. The free lime determined by the methods showed that HT-XRD produced good results for the evaluation of burnability. In addition, HT-XRD revealed the formation of intermediate phases, providing insight into early reactions in a cement kiln. The particle size of quartz was found to affect crystal expansion of the phase at a high temperature, subsequently affecting the formation of silica polymorphs. The different raw meals used in this study also indicate that the formation of different silica polymorphs affects the formation of C2S. The lack of knowledge regarding the influence of β-quartz on the reduction of free lime is highlighted.

Publisher

Thomas Telford Ltd.

Subject

General Materials Science,Building and Construction

Link

https://www.icevirtuallibrary.com/doi/pdf/10.1680/jadcr.23.00034

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