자원리싸이클링 (Resources Recycling)

  • 제31권2호
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  • Pages.56-62
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  • 2022
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  • 2765-3439(pISSN)
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  • 2765-3447(eISSN)
한국자원리싸이클링학회 (The Korean Institute of Resources Recycling)
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VTM 정광 염배소 산물에 대한 바나듐 수침출 거동 분석 및 고농도 바나듐 용액 제조

The Water Leaching Behavior of Vanadium from a Salt-roasted VTM Concentrate and the Preparation of High-concentration Vanadium Solution

  • 박유진 (한국지질자원연구원 자원활용연구본부) ;
  • 김리나 (한국지질자원연구원 자원활용연구본부) ;
  • 김민석 (한국지질자원연구원 자원활용연구본부) ;
  • 전호석 (한국지질자원연구원 자원활용연구본부) ;
  • 정경우 (한국지질자원연구원 자원활용연구본부)
  • Park, Yujin (Resources Utilization Division, Korea Institute of Geoscience & Mineral Resources) ;
  • Kim, Rina (Resources Utilization Division, Korea Institute of Geoscience & Mineral Resources) ;
  • Kim, Min-seuk (Resources Utilization Division, Korea Institute of Geoscience & Mineral Resources) ;
  • Jeon, Ho-Seok (Resources Utilization Division, Korea Institute of Geoscience & Mineral Resources) ;
  • Chung, Kyeong Woo (Resources Utilization Division, Korea Institute of Geoscience & Mineral Resources)
  • 투고 : 2022.03.28
  • 심사 : 2022.04.11
  • 발행 : 2022.04.30
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초록

본 연구에서는 탄산나트륨(Na2CO3)을 사용하여 염배소한 함바나듐 티탄철광(VTM)으로부터 바나듐의 수침출 거동을 고찰하였다. 자력선별 된 정광과 Na2CO3를 질량비 4:1로 혼합한 후 1050 ℃, 3시간 조건에서 염배소하고 로드밀을 사용해 D50=48.79 ㎛로 분쇄하여 연구에 사용하였으며 침출 온도와 광액 농도를 수침출 영향인자로 선정하였다. 연구 결과, 온도가 25, 55, 85 ℃로 증가할수록 바나듐의 침출율은 90.4, 88.2, 83.8%로 감소하였으며 광액 농도 10, 50, 100 w/v%에 따른 바나듐 침출율은 각각 90.4, 87.0, 87.0%로 변화가 크지 않았다. 이를 바탕으로 25 ℃, 100 w/v%, 300 rpm, 1시간의 조건에서 다단 침출을 수행한 결과, 총 4단 침출 후 최종 침출액의 바나듐 농도는 16.20 g/L로 분석되었다. 따라서 다단 침출을 통해 고농도 소듐바나데이트 용액의 제조가 가능하였다.

This study investigated the water leaching behavior of vanadium in Na2CO3-roasted vanadium-bearing titaniferous magnetite (VTM) concentrate. The magnetic concentrate and Na2CO3, mixed in a mass ratio of 4:1, were roasted at 1050 ℃, kept for 3 h, and ground to a size of D50 = 48.79 ㎛ using a rod mill. The effects of leaching temperature and pulp density on water leaching were then investigated. The results show that the vanadium leaching efficiency decreased to 90.4%, 88.2%, and 83.8% as the temperature increased to 25, 55, and 85 ℃, respectively, whereas it remained almost constant 90.4%, 87.0%, and 87.0% as the pulp density increased to 10, 50, and 100 w/v%, respectively. Based on the preliminary leaching results, multi-stage leaching was conducted with the experimental conditions of 25 ℃, 100 w/v%, 300 rpm, and 1 h. The vanadium concentration in the final leaching solution was determined as 16.20 g/L after four stages of leaching. Thus, a high-concentration sodium vanadate solution was prepared by multi-stage leaching.

키워드

과제정보

본 연구는 한국지질자원연구원 기본사업인 '국내 부존 바나듐(V) 광물자원 선광/제련/활용기술 개발(GP2020-013, 21-3212-1)' 과제의 일환으로 수행되었습니다. 또한, 2021년도 정부(산업통상자원부)의 재원으로 한국에너지기술평가원의 지원을 받아 수행된 연구입니다(20216110100040, IP2021-017, 국내 바나듐함유광으로부터 바나듐광 스마트 개발 및 원료화 기술개발).

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