Optimizing calcination for low-grade calcined kaolinite clay: Reactivity and energy consumption
The cement industry is actively seeking sustainable strategies to enhance efficiency and reduce its environmental influences. Calcined kaolinite clay (CC) has emerged as a promising supplementary cementitious material (SCM) that offers significant cost and carbon emission reduction emissions compare...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | Case Studies in Construction Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509524012087 |
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| author | Hao Sui Bin Wang Ziyu Chen Yanming Liu Kwesi Sagoe-Crentsil Wenhui Duan |
| author_facet | Hao Sui Bin Wang Ziyu Chen Yanming Liu Kwesi Sagoe-Crentsil Wenhui Duan |
| author_sort | Hao Sui |
| collection | DOAJ |
| description | The cement industry is actively seeking sustainable strategies to enhance efficiency and reduce its environmental influences. Calcined kaolinite clay (CC) has emerged as a promising supplementary cementitious material (SCM) that offers significant cost and carbon emission reduction emissions compared to traditional materials. However, the variability in calcination conditions due to differing procedures and clay properties often leads to sub-optimal outcomes, diminishing pozzolanic reactivity and strengths. To address this, we developed an empirical model that accurately predicts energy consumption in relation to the metakaolin (MK) transformation ratio, enabling more efficient and sustainable production processes. Our study investigates the effects of different calcination conditions on low-grade CC by analyzing its physical and chemical characteristics, thermal decomposition, reactivity, and thermodynamics. We identified optimal calcination conditions at 800°C for 180 minutes using an electric furnace, achieving the highest pozzolanic reactivity and mechanical strength while enhancing the slump value by up to 40 %. The proposed model demonstrates a robust correlation coefficient of approximately 0.97, providing reliable energy consumption predictions across various calcination scenarios. This research provides valuable insights into balancing energy efficiency with material performance in low-grade CC calcination processes to augment sustainable development initiatives of the cement industry. |
| format | Article |
| id | doaj-art-16547ef4792a476b8b9988c6e4cbc338 |
| institution | OA Journals |
| issn | 2214-5095 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj-art-16547ef4792a476b8b9988c6e4cbc3382025-08-20T01:59:26ZengElsevierCase Studies in Construction Materials2214-50952024-12-0121e0405610.1016/j.cscm.2024.e04056Optimizing calcination for low-grade calcined kaolinite clay: Reactivity and energy consumptionHao Sui0Bin Wang1Ziyu Chen2Yanming Liu3Kwesi Sagoe-Crentsil4Wenhui Duan5Department of Civil Engineering, Monash University, Clayton, VIC 3800, AustraliaSinoma International Engineering Co., Ltd., Beijing 100102, China; Beijing Oriental Yuhong Waterproof Technology Co., Ltd., Beijing 101111, ChinaDepartment of Civil Engineering, Monash University, Clayton, VIC 3800, AustraliaDepartment of Civil Engineering, Monash University, Clayton, VIC 3800, Australia; School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC 3004, AustraliaDepartment of Civil Engineering, Monash University, Clayton, VIC 3800, AustraliaDepartment of Civil Engineering, Monash University, Clayton, VIC 3800, Australia; Corresponding author.The cement industry is actively seeking sustainable strategies to enhance efficiency and reduce its environmental influences. Calcined kaolinite clay (CC) has emerged as a promising supplementary cementitious material (SCM) that offers significant cost and carbon emission reduction emissions compared to traditional materials. However, the variability in calcination conditions due to differing procedures and clay properties often leads to sub-optimal outcomes, diminishing pozzolanic reactivity and strengths. To address this, we developed an empirical model that accurately predicts energy consumption in relation to the metakaolin (MK) transformation ratio, enabling more efficient and sustainable production processes. Our study investigates the effects of different calcination conditions on low-grade CC by analyzing its physical and chemical characteristics, thermal decomposition, reactivity, and thermodynamics. We identified optimal calcination conditions at 800°C for 180 minutes using an electric furnace, achieving the highest pozzolanic reactivity and mechanical strength while enhancing the slump value by up to 40 %. The proposed model demonstrates a robust correlation coefficient of approximately 0.97, providing reliable energy consumption predictions across various calcination scenarios. This research provides valuable insights into balancing energy efficiency with material performance in low-grade CC calcination processes to augment sustainable development initiatives of the cement industry.http://www.sciencedirect.com/science/article/pii/S2214509524012087Supplementary cementitious materialCalcined clayThermodynamicsEnergy consumptionReactivity |
| spellingShingle | Hao Sui Bin Wang Ziyu Chen Yanming Liu Kwesi Sagoe-Crentsil Wenhui Duan Optimizing calcination for low-grade calcined kaolinite clay: Reactivity and energy consumption Case Studies in Construction Materials Supplementary cementitious material Calcined clay Thermodynamics Energy consumption Reactivity |
| title | Optimizing calcination for low-grade calcined kaolinite clay: Reactivity and energy consumption |
| title_full | Optimizing calcination for low-grade calcined kaolinite clay: Reactivity and energy consumption |
| title_fullStr | Optimizing calcination for low-grade calcined kaolinite clay: Reactivity and energy consumption |
| title_full_unstemmed | Optimizing calcination for low-grade calcined kaolinite clay: Reactivity and energy consumption |
| title_short | Optimizing calcination for low-grade calcined kaolinite clay: Reactivity and energy consumption |
| title_sort | optimizing calcination for low grade calcined kaolinite clay reactivity and energy consumption |
| topic | Supplementary cementitious material Calcined clay Thermodynamics Energy consumption Reactivity |
| url | http://www.sciencedirect.com/science/article/pii/S2214509524012087 |
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