Characteristics in Flotation of Molybdenite by Micro-bubble Column

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2009 Vol.46, Issue 3 Preview Page Next Page

Characteristics in Flotation of Molybdenite by Micro-bubble Column Micro-bubble Column에 의한 Molybdenite의 부선특성: 한오형, 강현호, 전호석
Oh-Hyung Han, Hyun-Ho Kang and Ho-Seok Jeon

30 June 2009. pp. 372-378

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Abstract

All of the molybdenite consumed in Korea depended on imports until 2005. But it suffered from surge in molybdenite price in the global market and volatile supply triggered by the embargo imposed on the ore by the Chinese government to protect its industry which is the main source of imported ore. In order to stabilize supply of molybdenite and for the protection of the associated industry, Korea developed mines since 2006. However, the quality of raw ore is low, marking Mo 0.3%, requiring the industry to develop new separation techniques for efficient separation of low garde molybdentie to provide the domestic market with high quality product. Therefore, in this experiment, by employing micro-bubble column separation technique on imported ore within Mo 50% flotation concentrate, a fine particle separation technique without cleaning was established yielding Mo 57% high quality ore with 90% recovery. Also, as a result of SEM & Mapping of each element to check the liberation of the particle, in the case of Cu (impurity), limit on complete separation was identified due to the bond between Cu ultra fine particle under 6.62 ㎛ and Mo.

Keywords

Micro-bubble Column

High grade Molybdenite

Flotation

우리나라는 2005년까지 몰리브덴광의 전량을 수입에 의존하였으나, 가장 큰 수입국인 중국이 자국 산업보호를 위한 수출 통제를 시행함으로 가격급등은 물론 원료의 안정적 확보를 위한 심각한 문제를 초래하였다. 이에 우리나라에서는 몰리브덴광의 안정적 확보 및 관련산업의 보호를 위해 2006년부터 국내 광산을 개발하고 있으나, 원광의 품위가 Mo 0.3%로 매우 낮아 저품위 몰리브덴광을 효율적으로 선별할 수 있는 국내 광산에 적합한 새로운 고도 선별기술 개발이 필요하다. 따라서, 본 실험에서는 국내에 수입된 Mo 50%이내의 부선 정광을 대상으로 micro-bubble column 선별법을 적용하여, 정선과정 없이 Mo 57% 이상의 고품위 정광을 90% 이상 회수할 수 있는 미립자 선별기술을 확립하였다. 또한 급광, 정광, 광미를 각각 SEM & 원소별 mapping 한 결과 불순물인 Cu의 경우, 6.62 ㎛ 이하의 극미립으로 Mo와 결합되어 있어 완벽한 단체분리에 한계가 있음을 확인하였다.

키워드

Micro-bubble Column

고품위 몰리브덴광

부유선별

References

한국자원정보서비스, 2008. 9. 12, http://www.kores.net.Bulatovic, Srdjan M., 2007, Handbook of Flotation Reagents, Elsevier, pp. 253-264.
Crozier, Ronad, D., Eng C., F.I.M.M, 1992, FLOTATION Theory, Reagents and Ore Testing, Pergamon Press, pp. 102-126.
Finch, J. A., 1990, Column Flotation, Pergamon Press, pp. 89-90.
Gonzalez, U. C., 1985, “The rate of Collectorless Flotation of Molybdenite,” Proceeding of the 2nd Latin-American Congress on Froth flotation, Concepcion, Chile, pp. 81-95.
Mathieu, G. I., 1972, Comparison of Flotation Column with Conventional Flotation for Concentration of a Molybdenum Ore, CIM Bulletin, pp. 41-45.
Rubinstein, Julius B., 1995, Column Flotation, Vol. 2, Gordon and Breach Science Publishers, pp. 103-140.
White, Lane, 1980, E&MJ Second Operating Handbook of Mineral Processing, E/MJ Mining Informational Services McGraw-Hill, Vol. 4, E&MJ Library of Operating Handbooks, 371-377.

Information

Publisher :The Korean Society of Mineral and Energy Resources Engineers
Publisher(Ko) :한국자원공학회
Journal Title :Journal of the Korean Society for Geosystem Engineering
Journal Title(Ko) :한국지구시스템공학회지
Volume : 46
No :3
Pages :372-378

[1] 한국자원정보서비스, 2008. 9. 12, http://www.kores.net.Bulatovic, Srdjan M., 2007, Handbook of Flotation Reagents, Elsevier, pp. 253-264.

[2] Crozier, Ronad, D., Eng C., F.I.M.M, 1992, FLOTATION Theory, Reagents and Ore Testing, Pergamon Press, pp. 102-126.

[3] Finch, J. A., 1990, Column Flotation, Pergamon Press, pp. 89-90.

[4] Gonzalez, U. C., 1985, “The rate of Collectorless Flotation of Molybdenite,” Proceeding of the 2nd Latin-American Congress on Froth flotation, Concepcion, Chile, pp. 81-95.

[5] Mathieu, G. I., 1972, Comparison of Flotation Column with Conventional Flotation for Concentration of a Molybdenum Ore, CIM Bulletin, pp. 41-45.

[6] Rubinstein, Julius B., 1995, Column Flotation, Vol. 2, Gordon and Breach Science Publishers, pp. 103-140.

[7] White, Lane, 1980, E&MJ Second Operating Handbook of Mineral Processing, E/MJ Mining Informational Services McGraw-Hill, Vol. 4, E&MJ Library of Operating Handbooks, 371-377.

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

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