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Open Access Influence of Mole Ratio of Calcium to Magnesium on Carbonation Properties of Calcium Hydroxide

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Abstract:

To facilitate carbonation efficiency, the effect of different mole ratio of Ca to Mg (Mr) on the carbonation of calcium hydroxide and magnesium hydroxide mixtures were investigated using a solid carbonation method. The conditions of carbonation are as follows: the mass fraction of CO2, gas pressure, liquid to solid ratio and the carbonation time were 99.9%, 0.3 MPa, 0.10 and 2.0 h, respectively. The results showed that mass gain rate reached the maximum value (23.75%) when Mr was 5. The carbonated products became smaller and looser and the degree of carbonation was improved when magnesium hydroxide was added. The degree of carbonation of magnesium hydroxide lower calcium hydroxide at the above mentioned conditions.

Keywords: calcium hydroxide; magnesium hydroxide; mass gain rate; mole ratio of calcium to magnesium; solid carbonation

Document Type: Research Article

DOI: https://doi.org/10.7521/j.issn.0454–5648.2013.06.19

Affiliations: School of Civil Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China

Publication date: 2013-06-01

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  • Journal of the Chinese Ceramic Society (JCCS), published in Chinese and in English, is a comprehensive monthly periodical focused on the fields of inorganic and non-metallic materials. The main purpose of the JCCS is to report the latest creative achievements in research, production and design for ceramics, glass, cementing materials, refractory, artificial crystals and other non-metallic materials. JCCS is regarded as an important journal in inorganic and non-metallic materials sciences in China and has been awarded by China Association for Science and Technology. The full-text of papers in JCCS is also published by CNKI (China National Knowledge Infrastructure). JCCS is indexed in EI Compendex, CA( Chemical Abstracts) ,SA and Ж and more than 20 databases.
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