Process Design for High-Purity MoO3 Production from MoS2 Ore: The Critical Role of Optimizing Oxidation Roasting Process

Jiin Lee; Seongsoo Han; Joobeom Seo; Jungho Heo

doi:10.7844/kirr.2025.34.3.15

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2025 Vol.34, Issue 3 Preview Page Next Page

Research Paper

Process Design for High-Purity MoO₃ Production from MoS₂ Ore: The Critical Role of Optimizing Oxidation Roasting Process MoS₂ 원광으로부터 고순도 MoO₃ 제조를 위한 공정 설계: 산화 배소 공정 최적화의 중요성

30 June 2025. pp. 15-25

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Abstract

To produce industrially applicable high-purity molybdenum trioxide (MoO₃) from molybdenite (MoS₂) ore, this study explored the processes of beneficiation to improve the MoS₂ grade, the oxidation roasting process for the conversion of MoS₂ to technical-grade MoO₃ (TG-MoO₃), and purification. An optimal grinding time and collector concentration were proposed in this study to enhance the grade and recovery of the concentrate. During the oxidation roasting process in a rotary kiln, the drum rotational speed and temperature were controlled to efficiently produce TG-MoO. Additionally, the production of high-purity MoO₃ from TG-MoO₃ was achieved through purification, including ammonia leaching and calcination. The results showed that the oxidation roasting process has a significant impact on the purity and yield of the purified MoO₃, indicating that optimized integration is required between each process. Accordingly, this study demonstrated the feasibility of producing high-purity MoO₃ from domestically sourced MoS₂ ore. Furthermore, the research findings pave the way for optimizing the operational processes for purified MoO₃ production, particularly for industrial applications.

Keywords

Molybdenum

Molybdenite

Molybdenum trioxide

Beneficiation

Oxidation roasting

Purification

몰리브데나이트 (MoS₂) 원광으로부터 산업적으로 활용 가능한 고순도 삼산화몰리브덴 (MoO₃)을 제조하기 위해 MoS₂ 순도를 향상시키는 선광, MoO₃로의 전환을 위한 산화 배소, 그리고 암모니아 침출 및 하소 등의 고순도화 공정 설계 연구를 수행하였다. 선광 공정에서는 MoS₂ 정광의 회수율과 품위를 향상시키기 위한 적절한 분쇄 시간과 포수제 농도를 제시하였으며, 산화 배소 공정에서는 산화반응에 영향을 미치는 온도와 로터리 킬른의 드럼 회전 속도를 제어하여 공업용 MoO₃를 제조하는 조건을 도출하였다. 또한 암모니아 침출 및 하소와 같은 고순도화 공정을 통해 공업용 MoO₃로부터 고순도 MoO₃를 제조하였다. 연구 결과, 산화 배소 공정이 고순도 MoO₃ 제조에 미치는 영향이 크며, 효율적인 MoO₃ 제조를 위해서는 각 공정 간의 연속성과 최적화된 연계가 중요함을 확인하였다. 본 연구는 국내 부존 MoS₂ 원광을 활용한 고순도 MoO₃ 제조의 가능성을 제시하며, 향후 산업적 응용 시 운영 조건을 제안하는데 기여할 것으로 기대된다.

키워드

몰리브덴

몰리브데나이트

삼산화몰리브덴

선광

산화 배소

고순도화

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Information

Publisher :The Korean Institute of Resources Recycling
Publisher(Ko) :한국자원리싸이클링학회
Journal Title :Resources Recycling
Journal Title(Ko) :자원리싸이클링
Volume : 34
No :3
Pages :15-25
Received Date : 2025-03-17
Revised Date : 2025-05-13
Accepted Date : 2025-05-27
DOI :https://doi.org/10.7844/kirr.2025.34.3.15

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

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