Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Development of Vanadium Recovery Process Using Reduction Pre-treatment from Vanadium Titanium-Magnetite (VTM) Ore

VTM광으로부터 환원 전처리를 이용한 바나듐 회수 공정 개발

  • Go, Byunghun (Mineral Processing & Metallurgy Research Center, Resources Utilization Division, Korea Institute of Geoscience and Mineral Resources (KIGAM)) ;
  • Jeong, Dohyun (Mineral Processing & Metallurgy Research Center, Resources Utilization Division, Korea Institute of Geoscience and Mineral Resources (KIGAM)) ;
  • Han, Yosep (Mineral Processing & Metallurgy Research Center, Resources Utilization Division, Korea Institute of Geoscience and Mineral Resources (KIGAM)) ;
  • Kim, Seongmin (Mineral Processing & Metallurgy Research Center, Resources Utilization Division, Korea Institute of Geoscience and Mineral Resources (KIGAM)) ;
  • Chu, Yeoni (Mineral Processing & Metallurgy Research Center, Resources Utilization Division, Korea Institute of Geoscience and Mineral Resources (KIGAM)) ;
  • Kim, Byung-su (Resource & Materials Research Center, Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM)) ;
  • Jeon, Ho-Seok (Mineral Processing & Metallurgy Research Center, Resources Utilization Division, Korea Institute of Geoscience and Mineral Resources (KIGAM))
  • 고병헌 (한국지질자원연구원 자원활용연구본부 자원회수연구센터) ;
  • 정도현 (한국지질자원연구원 자원활용연구본부 자원회수연구센터) ;
  • 한요셉 (한국지질자원연구원 자원활용연구본부 자원회수연구센터) ;
  • 김성민 (한국지질자원연구원 자원활용연구본부 자원회수연구센터) ;
  • 추연이 (한국지질자원연구원 자원활용연구본부 자원회수연구센터) ;
  • 김병수 (한국지질자원연구원 자원활용연구본부 자원소재연구센터) ;
  • 전호석 (한국지질자원연구원 자원활용연구본부 자원회수연구센터)
  • Received : 2022.01.24
  • Accepted : 2022.02.17
  • Published : 2022.04.30
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Abstract

The study was conducted to develop a vanadium recovery process using reduction pre-treatment in the Vanadium TitanoMagnetite (VTM) The sample for the research was provided by the Gwan-in Mine in Pocheon, Gyeonggi-do. The vanadium content of the sample is 0.54 V2O5% and vanadium is concentrated mainly in magnetite and ilmenite. Magnetic separation of the sample can increase vanadium content up to 1.10 V2O5%. To increase the vanadium content further, reduction pre-treatment was performed, which is a process of concentrating vanadium present in the iron by reducing iron in magnetite using carbon(C). Based on this reduction pre-treatment, the magnetic separation process was developed, which achieved a vanadium grade of 1.31V2O5% and 79.68% recovery. In addition, XRD analysis of the vanadium concentrate before and after reduction and the final vanadium concentrate was performed to confirm the behavior of vanadium by reduction pre-treatment.

본 연구에서는 국내에 부존된 함바나듐 티탄자철석(Vanadium TitanoMagnetite, VTM)을 대상으로 환원 전처리를 이용한 바나듐 회수 공정 개발 연구를 진행하였다. 연구에 사용된 시료는 경기 포천시 관인광산에서 제공한 시료로 바나듐 품위는 0.54V2O5%이며, 자철석과 티탄철석이 대부분 차지하고 있는 것을 확인하였다. 단일자력선별 실험결과, 자력선별만으로는 바나듐 품위 1.10V2O5%대가 한계임을 확인하였다. 이를 해결하기 위하여 탄소(C)를 이용, 자철석 내에 존재하는 철을 환원시켜 철 내부에 존재하는 바나듐을 농축, 품위를 향상시키고자 하였다. 실험결과를 바탕으로 환원 전처리를 적용한 자력선별 공정을 개발하였으며 최종적으로 V2O5기준으로 품위 1.31%, 회수율 79.68%인 바나듐 정광을 회수할 수 있었다. 또한 환원 전과 후, 최종 바나듐 정광에 대한 XRD 분석을 실시하여 환원 전처리에 의한 바나듐의 거동을 확인하였다.

Keywords

Acknowledgement

본 연구는 한국지질자원연구원 주요사업인 '국내 부존 바나듐(V) 광물자원 선광/제련/활용기술 개발(GP2020-013, 22-3212)' 과제의 일환으로 수행되었습니다.

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