Optimization of Soda ash Roasting-water Leaching Conditions for Vanadium Recovery from a Vanadium-bearing Titaniferous Magnetite Ore

Rina Kim, Min-seuk Kim, Jae-chun Lee, Sujeong Lee, Kang-Yeong Kim, Kyeong Woo Chung, Chul-Woo Nam, Sung-Don Kim and Ho-Seok Jeon

doi:10.32390/ksmer.2021.58.1.017

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2021 Vol.58, Issue 1S Preview Page Next Page

Research Paper (Special Issue)

Optimization of Soda ash Roasting-water Leaching Conditions for Vanadium Recovery from a Vanadium-bearing Titaniferous Magnetite Ore 함바나듐 티탄철광으로부터 바나듐 회수를 위한 소다회 염배소-수침출 최적 조건 탐색 연구

February 2021. pp. 17-24

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Abstract

함바나듐 티탄철광으로부터 바나듐 회수를 위한 소다회 (Na₂CO₃) 염배소-수침출 조건 확립에 대한 연구를 수행하였다. 주요 광물로 자철석 및 티탄철석을 함유하고 있는 광석의 자력선별 정광을 연구에 사용하였으며, 정광 중 바나듐 함량은 V₂O₅로써 약 0.8%로 분석되었다. 본 연구에서 고려한 염배소 및 수침출 영향인자는 Na₂CO₃ 첨가량, 염배소 온도 및 시간 (이상 염배소 인자), 염배소 산물의 D₅₀ 입도, 수침출 온도 및 시간 (이상 수침출 인자) 등이다. 연구 결과, 정광을 20 wt% Na₂CO₃, 1,000°C, 3시간 조건에서 염배소한 후 D₅₀ 2.1 µm, 80°C, 1시간 조건하에서 수침출하였을 때, 바나듐의 최대 침출율 85.2%가 달성되었다.

키워드

바나듐

함바나듐 티탄철광

염배소

수침출

소다회

To recover vanadium from vanadium-bearing titaniferous magnetite (VTM) ore, the conditions of the soda ash (Na₂CO₃) the roasting and water leaching were investigated. The VTM ore contained magnetite and ilmenite as the major minerals, from which a concentrate produced from magnetic separation was used as feed material. The vanadium content in the concentrate was approximately 0.8% as V₂O₅. The experimental factors considered for the process optimization included the amount of Na₂CO₃ added, and roasting temperature/time for the salt roasting process, and the particle size (D₅₀) of the roasted material, and the leaching temperature/time for the water leaching process. The results show that the maximum vanadium leaching efficiency of 85.2% was achieved at the following optimal conditions: salt roasting at 20 wt% of Na₂CO₃, 1,000°C and 3 hr, and the water leaching at D₅₀ of 2.1 µm and 80°C for 1 hr.

Keywords

Vanadium

VTM

Salt roasting

Water leaching

Soda ash

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Information

Publisher :The Korean Society of Mineral and Energy Resources Engineers
Publisher(Ko) :한국자원공학회
Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
Journal Title(Ko) :한국자원공학회지
Volume : 58
No :1
Pages :17-24
Received Date :2021. 01. 19
Revised Date :2021. 02. 15
Accepted Date : 2021. 02. 23
DOI :https://doi.org/10.32390/ksmer.2021.58.1.017

Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

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