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Language: korean

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received April 3, 2026
Accepted May 20, 2026
Available online June 17, 2026

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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탄산염 광물의 진공 소성 조건으로 회수한 이산화탄소의 탄산화 반응에 관한 연구

A Study on the Carbonation Reaction of Carbon Dioxide Recovered by Vacuum Calcination Conditions of Carbonate Minerals

황대주^1† 최영훈² 정성대³ 유영환¹ 최형원¹

Dae Ju Hwang^1† Young Hoon Choi² Seong Dae Jeong³ Young Hwan Yu¹ Hyung Won Choi¹

¹한국석회석신소재연구소 ²대성 MDI ³엠투

¹Korea Institute of Limestone and Advanced Materials ²DaeSeong MDI ³M2 Inc

hdj1057@kilam.re.kr

Korean Chemical Engineering Research, August 2026, 64(3), 105170
https://doi.org/10.9713/kcer.2026.64.3.105170

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Abstract

탄산염 광물인 1)석회석의 탈탄산화 반응을 통하여 탈탄산화 반응에서 방출하는 CO₂가스를 진공 조건인 아스피레이터(aspirator)로 보다 간단한 공정으로 회수하여, 직접 탄산화 반응을 통한 탄산칼슘을 합성하기 위해 실시하였다. 석회석의 경우, 진공 소성의 조건으로 약 650 ℃일 때 CO₂가스 0.03% vol 측정, 950 ℃일 때 최대 CO₂가스 53.48% vol 측정되었다. 그리고 진공 소성과 동시에 직접 탄산화 반응 시, CaO 1~3 wt% : CO₂1 wt%의 비율로 합성 시, CaCO₃68.3~100 wt%와 미반응 Ca(OH)₂11.7~31.7 wt%로 석회석의 경우, 500 g 진공 소성 시 218 g의 탈탄산화 반응 CO₂가스 발생으로 직접 탄산화 반응을 유도할 때의 CaO 1 wt% : CO₂1 wt% 비율이 최적 조건임을 알 수 있었다. 탄산염 광물인 2)백운석의 경우, 진공 소성의 조건으로 약 480 ℃일 때 CO₂가스 0.03% vol 측정, 850 ℃일 때 최대 CO₂ 가스 63.77% vol 측정되었다. 그리고 진공 소성과 동시에 직접 탄산화 반응 시, CaO 1~3 wt% : CO₂ 1 wt%의 비율로 합성 시, CaCO₃85.9~100 wt%의 결정상 구조와 미반응 Ca(OH)₂2~14.1 wt%로 백운석의 경우, 500 g 진공 소성 시 238 g의 탈탄산화 반응 CO₂가스 발생으로 직접 탄산화 반응을 유도할 때의 CaO 2 wt% : CO₂1 wt% 비율이 최적 조건임을 알 수 있었다.

This was carried out to synthesize calcium carbonate through a direct carbonation reaction by recovering the CO₂gas released during the de-carbonation reaction of 1) limestone, a carbonate mineral, using a vacuum aspirator in a simpler process. In the case of limestone, under vacuum calcination conditions, CO₂gas was measured at 0.03% vol at approximately 650 ℃ and a maximum CO₂gas of 53.48% vol at 950 ℃. In addition, when synthesizing with a ratio of CaO 1~3 wt% : CO₂1 wt% during vacuum calcination and direct carbonation reaction, CaCO₃68.3~100 wt% and unreacted Ca(OH)₂11.7~31.7 wt% were produced. In the case of limestone, 218 g of CO₂gas was generated during vacuum calcination of 500 g, indicating that the ratio of CaO 1 wt% : CO₂1 wt% is the optimal condition for inducing a direct carbonation reaction. In the case of 2) dolomite, a carbonate mineral, CO₂gas was measured at 0.03% vol at approximately 480 ℃ under vacuum calcination conditions, and a maximum CO₂gas of 63.77% vol was measured at 850 ℃. And when synthesizing with a ratio of CaO 1 to 3 wt% : CO₂1 wt% during vacuum calcination and direct carbonation reaction, it was found that the optimal condition is a ratio of CaO 2 wt% : CO₂1 wt% when inducing a direct carbonation reaction with 238 g of CO₂gas generated during vacuum calcination of 500 g, with a crystalline phase structure of CaCO₃85.9 to 100 wt% and unreacted Ca(OH)₂2 to 14.1 wt%.

Keywords

Limestone, Dolomite, Microwave heating, De-carbonation, Carbonation, Mg crown

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