Kinetic Study on the Volatilization Separation of Lithium from an ⍺-Spodumene Concentrate by Chlorination Roasting

JeoungHyun Yoo; Ji-Hyuk Choi; In-Su Park; Taegong Ryu; Byung-Su Kim

doi:10.7844/kirr.2026.35.5.49

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2026 Vol.35, Issue 5 Preview Page Next Page

Research Paper

Kinetic Study on the Volatilization Separation of Lithium from an ⍺-Spodumene Concentrate by Chlorination Roasting ⍺-스포듀민 정광으로부터 염화배소에 의한 리튬의 휘발 분리에 관한 속도론적 연구

31 October 2026. pp. 49-56

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Abstract

In this study, the kinetics of the volatilization separation of lithium from ⍺-spodumene concentrate were investigated. Thermodynamic analysis revealed that calcium chloride is a suitable salt for the volatilization separation of lithium, as it converts lithium in the ⍺-spodumene concentrate into lithium chloride. Chloride roasting experiments using calcium chloride were then carried out at temperatures from 1,000 to 1,180 °C to volatilize and separate the lithium contained in the ⍺-spodumene concentrate. The rate data agreed relatively well with the nucleation and growth model. Furthermore, more than 80% of the lithium in the ⍺-spodumene concentrate was volatized after 90 min at 1,180 °C. The activation energy of the reaction was determined to be 107.2 kJ/mol over the temperature range of 1,000 to 1,180 °C.

Keywords

spodumene

salt roasting

nucleation and growth model

volatilization separation

본 연구에서는 ⍺-스포듀민 정광으로부터 리튬을 휘발분리하기 위한 속도론적 연구가 수행되었다. 열역학적 분석은 염화칼슘이 ⍺-스포듀민 정광으로부터 리튬을 염화리튬으로 전환하여 리튬을 휘발 분리할 수 있는 적절한 염임을 보였다. 염화칼슘을 사용하여 염화배소를 통한 ⍺-스포듀민 정광에 함유된 리튬의 휘발분리 실험은 반응 온도 1,000 ℃~1,180 ℃ 범위에서 수행되었다. 얻어진 속도 데이터는 핵생성 및 성장 모델(Nucleation and growth model)에 비교적 잘 일치하는 것으로 분석되었다. 또한, 1,180 ℃, 반응시간 90분에서 ⍺-스포듀민 정광에 함유된 리튬의 휘발분리율이 80% 이상 이었다. 반응의 활성화 에너지는 반응 온도 1,000 ℃~1,180 ℃ 범위에서 107.2 kJ/mol이었다.

키워드

스포듀민

염화배소

핵생성 및 성장 모델

휘발 분리

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Information

Publisher :The Korean Institute of Resources Recycling
Publisher(Ko) :한국자원리싸이클링학회
Journal Title :Resources Recycling
Journal Title(Ko) :자원리싸이클링
Volume : 35
No :5
Pages :49-56
Received Date : 2026-06-15
Revised Date : 2026-07-29; 2026-08-12
Accepted Date : 2026-08-24
DOI :https://doi.org/10.7844/kirr.2026.35.5.49

Resources Recycling ISSN:2765-3439(Print) 2765-3447(Online) 자원리싸이클링

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