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국내부존 바나듐 광물자원 생산을 위한 기술개발 필요성

Developing Technology Necessary to Produce Domestic Vanadium Resources

한요셉|고병헌|전호석|백상호|정도현|김성민
한국자원공학회 (The Korean Society of Mineral and Energy Resources Engineers)|2021.02|한국자원공학회지 (Journal of the Korean Society of Mineral and Energy Resources Engineers)|제58권 제1호|pp. 66-74

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참고문헌

키워드

Separation선별Vanadium Redox Flow BatteryVanadium바나듐 레독스 흐름전지바나듐함바나듐 티탄자철석Vanadium Titanomagnetite
주제분류자원공학

초록

바나듐은 주로 고강도 및 내마모성 철강 제조 등에 많이 사용되고 있다. 최근에는 차세대 대용량 에너지저장장치로 주목받고 있는 바나듐 레독스 흐름전지의 양극 및 음극 활물질로 연구가 많이 진행되고 있다. 지금까지 바나듐은 철, 우라늄, 인 등의 제련 및 정련 과정에서 부산물로 대부분 회수되었으나, 수요가 크게 증가하면서 광석으로부터 직접 회수하는 기술개발이 이루어지고 있다. 중국은 자국에 많이 부존된 무연탄광으로부터 많은 양을 자립생산하고 있다. 국내에도 함바나듐 티탄자철석 광상 등으로 V2O5 품위 0.3~0.6% 정도의 바나듐이 부존되어 있는 것으로 알려져 있어, 자립 확보를 위한 선별 기술개발이 필요하다. 특히, 국내는 세계 최고의 2차 전지 제조기술을 확보하고 있어, 바나듐 원료의 안정적 확보가 이루어지면 대용량 에너지산업도 우리나라의 주요 핵심 산업으로 발전할 것으로 기대된다.

Abstract

Vanadium is commonly used to manufacture high-strength and wear-resistant steel to improve its earthquake resistance. Recently, materials in vanadium redox flow batteries that are considered next-generation large-capacity energy storage systems, have received a lot of research attention. Vanadium is mostly recovered as a by-product of smelting and refining elements including iron, uranium, and phosphorus. However, given the significant increase in the demand for vanadium, technology is being developed to recover it directly from ore. China produces a large amount of vanadium from stone coal ore. Korea has a large vanadium reserve, given the presence of vanadium titanomagnetite (0.3–0.6 V2O5%) in the country; therefore, it is necessary to develop the technology to separate the vanadium from this ore. It is expected that particularly the energy industry will develop into a major industry in Korea, if stable stocks of vanadium raw materials can be secured using the best available secondary battery manufacturing technology.

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