Experimental and modeling study of flash calcination of kaolinite rich clay particles in a gas suspension calciner

Abraham Teklay Gebremariam; Chungen Yin; Lasse Rosendahl; Lea Lindequist Køhler

doi:10.1016/j.clay.2014.11.003

Experimental and modeling study of flash calcination of kaolinite rich clay particles in a gas suspension calciner

Abraham Teklay Gebremariam, Chungen Yin, Lasse Rosendahl, Lea Lindequist Køhler

AAU Energy

Research output: Contribution to journal › Journal article › Research › peer-review

39 Citations (Scopus)

Abstract

Calcination of kaolinite particles under appropriate conditions to produce materials that can replace part of the CO2 intensive clinker is gaining an increasing interest in cement industry worldwide. This paper presents a study of flash calcination of kaolinite rich clay particles in a pilot scale gas suspension calciner, with the aim to derive useful guidelines on smart calcination for obtaining products of the best pozzolanic properties. Calcination tests are performed in the calciner under six different operation conditions. The raw feed and the calcined clay samples are all characterized experimentally and a mathematical model is also developed to predict the conversion of the clay particles. The model properly accounts for the particle–ambient flow interaction and numerically solves all the processes occurring within the clay particles. The model predictions are compared against the experimental results. A good agreement is achieved. Finally, a model-based sensitivity analysis is conducted.

Original language	English
Journal	Applied Clay Science
Volume	103
Pages (from-to)	10-19
Number of pages	10
ISSN	0169-1317
DOIs	https://doi.org/10.1016/j.clay.2014.11.003
Publication status	Published - Jan 2015

Keywords

Kaolinite
Flash calcination
Metakaolinite
Supplementary cementitious materials
Pozzolanic property

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.clay.2014.11.003

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SCM: SCM - Manufacturing of highly reactive Supplementary Cementitious Materials for low-CO2 cement (The Danish National Advanced Technology Foundation, 095-2010-1)
Rosendahl, L., Yin, C. & Gebremariam, A. T.
01/08/2011 → 31/12/2014
Project: Research

Cite this

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title = "Experimental and modeling study of flash calcination of kaolinite rich clay particles in a gas suspension calciner",

abstract = "Calcination of kaolinite particles under appropriate conditions to produce materials that can replace part of the CO2 intensive clinker is gaining an increasing interest in cement industry worldwide. This paper presents a study of flash calcination of kaolinite rich clay particles in a pilot scale gas suspension calciner, with the aim to derive useful guidelines on smart calcination for obtaining products of the best pozzolanic properties. Calcination tests are performed in the calciner under six different operation conditions. The raw feed and the calcined clay samples are all characterized experimentally and a mathematical model is also developed to predict the conversion of the clay particles. The model properly accounts for the particle–ambient flow interaction and numerically solves all the processes occurring within the clay particles. The model predictions are compared against the experimental results. A good agreement is achieved. Finally, a model-based sensitivity analysis is conducted.",

keywords = "Kaolinite, Flash calcination, Metakaolinite, Supplementary cementitious materials, Pozzolanic property",

author = "Gebremariam, {Abraham Teklay} and Chungen Yin and Lasse Rosendahl and K{\o}hler, {Lea Lindequist}",

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T1 - Experimental and modeling study of flash calcination of kaolinite rich clay particles in a gas suspension calciner

AU - Gebremariam, Abraham Teklay

AU - Yin, Chungen

AU - Rosendahl, Lasse

AU - Køhler, Lea Lindequist

PY - 2015/1

Y1 - 2015/1

N2 - Calcination of kaolinite particles under appropriate conditions to produce materials that can replace part of the CO2 intensive clinker is gaining an increasing interest in cement industry worldwide. This paper presents a study of flash calcination of kaolinite rich clay particles in a pilot scale gas suspension calciner, with the aim to derive useful guidelines on smart calcination for obtaining products of the best pozzolanic properties. Calcination tests are performed in the calciner under six different operation conditions. The raw feed and the calcined clay samples are all characterized experimentally and a mathematical model is also developed to predict the conversion of the clay particles. The model properly accounts for the particle–ambient flow interaction and numerically solves all the processes occurring within the clay particles. The model predictions are compared against the experimental results. A good agreement is achieved. Finally, a model-based sensitivity analysis is conducted.

AB - Calcination of kaolinite particles under appropriate conditions to produce materials that can replace part of the CO2 intensive clinker is gaining an increasing interest in cement industry worldwide. This paper presents a study of flash calcination of kaolinite rich clay particles in a pilot scale gas suspension calciner, with the aim to derive useful guidelines on smart calcination for obtaining products of the best pozzolanic properties. Calcination tests are performed in the calciner under six different operation conditions. The raw feed and the calcined clay samples are all characterized experimentally and a mathematical model is also developed to predict the conversion of the clay particles. The model properly accounts for the particle–ambient flow interaction and numerically solves all the processes occurring within the clay particles. The model predictions are compared against the experimental results. A good agreement is achieved. Finally, a model-based sensitivity analysis is conducted.

KW - Kaolinite

KW - Flash calcination

KW - Metakaolinite

KW - Supplementary cementitious materials

KW - Pozzolanic property

U2 - 10.1016/j.clay.2014.11.003

DO - 10.1016/j.clay.2014.11.003

M3 - Journal article

SN - 0169-1317

VL - 103

SP - 10

EP - 19

JO - Applied Clay Science

JF - Applied Clay Science

ER -

Experimental and modeling study of flash calcination of kaolinite rich clay particles in a gas suspension calciner

Abstract

Keywords

UN SDGs

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AUB Link

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Projects

SCM: SCM - Manufacturing of highly reactive Supplementary Cementitious Materials for low-CO2 cement (The Danish National Advanced Technology Foundation, 095-2010-1)

Cite this