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2026 Vol.35, Issue 1 Preview Page

Research Paper

Influence of Sieving Method of TiO2 Feed on the Production of Low-O Ti via Magnesiothermic Reduction in a Hydrogen Atmosphere

TiO2 원료 분급이 수소 분위기 내 마그네슘 열환원을 이용한 저산소 Ti 금속 분말 제조에 미치는 영향

Youngju Song12
,
Sung-Hun Park23
,
Jin-Ho Yoon4
,
Jieun Lee4
,
Jungshin Kang12*
송 영주12
,
박 성훈23
,
윤 진호4
,
이 지은4
,
강 정신12*
1Department of Energy Resources Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
2Research Institute of Energy and Resources, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
3By-Product Resource Research Group, Research Institute of Industrial Science & Technology, 67, Cheongam-ro, Nam-gu, Pohang-si, Gyeongsangbuk-do 37673, Republic of Korea
4Functional Composite Materials Research Group, Material Science and Chemical Engineering Center, Institute for Advanced Engineering, 175-28, Goan-ro 51 beon-gil, Baegam-myeon, Cheoin-gu, Youngin-si, Gyeonggi-do 17180, Republic of Korea
1서울대학교 에너지자원공학과
2서울대학교 에너지자원신기술연구소
3포항산업과학연구원 부산물자원화연구그룹
4고등기술연구원 융합소재연구센터 기능성소재연구그룹
*Corresponding Author
28 February 2026. pp. 17-28
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Abstract

In recent years, a novel method for producing titanium (Ti) with a low oxygen (O) concentration has been developed to overcome the limitations of the commercial Ti production process, the Kroll process. This method involves the reduction of titanium dioxide (TiO2) using magnesium (Mg) in a hydrogen gas (H2) atmosphere. In this study, the effects of the sieving method and the particle size of the TiO2 feed on the O concentration in the reduced Ti product were investigated, based on a thermodynamic analysis of the magnesiothermic reduction mechanism. Titanium hydride (TiH2) powder containing 0.415 – 0.480 mass%O was directly produced by reducing dry-sieved TiO2 feed, with a size range of 45 – 300 μm, using Mg under a 10 % H2 mixed gas atmosphere at 973 K. Furthermore, by comparing the magnesiothermic reduction results of wet-sieved TiO2 feed, the influence of the sieving method on the O concentration in the TiH2 product was evaluated.

Keywords
titanium dioxide
titanium hydride powder
magnesium
reduction
hydrogen

최근 크롤(Kroll)법에 의한 타이타늄(Ti) 제조 시 문제점을 해결하고자 수소 가스(H2) 분위기에서 마그네슘(Mg) 금속을 이용한 이산화타이타늄(TiO2)의 열환원법에 의한 저산소 Ti 제조법이 개발되고 있다. 본 연구에서는 TiO2 원료 분급방식 및 입도가 열환원 반응 후 생성된 Ti 산물의 산소 농도에 미치는 영향을 조사하였으며 환원 메커니즘에 대한 열역학적 분석을 실시하였다. 건식 체질을 통해 45 – 300 μm 입도 구간으로 분급된 TiO2 원료를 973 K의 10 % H2 혼합 가스 분위기에서 Mg 금속을 이용한 환원 시 0.415 – 0.480 mass%의 산소를 함유한 수소화타이타늄(TiH2) 분말이 제조되었다. 또한, 습식 체질을 통해 분급된 TiO2 원료 사용 시 환원 결과와의 비교를 통해, TiO2 원료의 분급법이 최종 TiH2 산물의 산소 농도에 미치는 영향을 평가하였다.

키워드
이산화타이타늄
수소화타이타늄
마그네슘
환원
수소
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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 :1
  • Pages :17-28
  • Received Date : 2025-08-06
  • Revised Date : 2025-12-18
  • Accepted Date : 2025-12-22
  • DOI :https://doi.org/10.7844/kirr.2026.35.1.17
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