Froth Flotation of Molybdenum Ore by Multistage Grinding Process

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2011 Vol.48, Issue 1 Preview Page Next Page

Froth Flotation of Molybdenum Ore by Multistage Grinding Process 다단분쇄에 의한 몰리브덴광의 부유선별 특성 연구: 전호석, 박철현, 한오형, 김병곤, 김진형
Ho-Seok Jeon, Chul-Hyun Park, Oh-Hyung Han, Byoung-Gon Kim and Jin-Hyung Kim

28 February 2011. pp. 25-33

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Abstract

Froth flotation of molybdenite from Dong-won NMC has been performed to produce the high-grade and low-cost molybdenite concentrate through multistage grinding process. The optimum particle size to apply of multistage grinding flotation was under 48mesh, which can obtain over 95% recovery from rougher. Liberation of rougher concentrate was the most effective at the regrinding time of 3 minutes, and the mean particle size (D50) was 16.5 ㎛. The natural pH of pulp was 8.7, showing that the effect of calcium oxide (CaO) due to calcite-skarn deposits. In rougher, the flotation efficiency of molybdenite considerably depended on the concentration of collector (kerosene, 75 g/t), the frother (AF65, 75 g/t), the depressant (Na2SiO3, 1.25 kg/t), pH 10 and pulp (20%). In clean prepared by regrounding rougher concentrate for 3 minutes, a Mo grade of 55.5% (MoS2, 92.7%) and a recovery of 94% could be successfully obtained under the condition of 10g/t kerosene, 30 g/t AF65, 200 g/t Na2SiO3, pH 10 and 1 cleaning time.

Keywords

Molybdenum ore

Molybdenite

Flotation

Multistage-grinding

동원 NMC 몰리브덴광을 대상으로 저비용, 고품위 몰리브덴 정광 생산을 위한 다단분쇄 부유선별을 수행하였다. 다단분쇄 부유선별에 적합한 최적 입도는 조선정광의 회수율이 95% 이상인 -48 mesh이었다. 조선정광의 단체분리도는 재분쇄 시간 3분에서 효과적이었으며, 이때의 평균입도는 16.5 ㎛이었다. 석회석 스카른 광체에서 기인한 산화칼슘(CaO)의 영향으로 광액의 자연 pH는 비교적 높은 8.7이었다. 조선부선에서 몰리브데나이트의 부선 효율은 포수제(kerosene, 75 g/t), 기포제(AF65, 75 g/t), 억제제(Na2SiO3, 1.25 kg/t), pH 10 그리고 광액농도(20%)에 의존하였다. 또한 조선정광을 3분간 재분쇄한 정선부선의 최적조건인 포수제 10 g/t, 기포제 30 g/t, 억제제 200 g/t, pH 10 그리고 정선횟수 1회에서, Mo 품위와 회수율이 각각 55.5%(MoS2, 92.7%)와 94%인 몰리브덴 최종 정광을 얻을 수 있었다.

키워드

몰리브덴광

휘수연석

부유선별

다단분쇄

References

김병수, 손정수, 이재천, 전호석, 2008, “몰리브덴 및 몰리브덴 화합물 제조기술 현황,” 재료마당, 제21권 4호, pp. 13-20.
박철현, 전호석, 김병곤, 김형석, 한오형, 2009, “동원 NMC 몰리브덴광의 부유선별 특성,” 한국지구시스템공학회지, 제46권 6호, pp. 754-760.
전호석, 박철현, 한오형, 김진형, 김병곤, 2008, “동원 NMC산 몰리브덴광의 부유선별 특성연구,” 한국지구시스템공학회 춘계학술발표, pp. 97-99.
최선규 외 8인, 2007, “금성 몰리브데늄광상의 잠푸 반암형 광체 대한 부존가능성과 성인적 환경,” 자원환경지질, 제40권 1호, pp. 1-14.
한국광물자원공사, 한국자원정보서비스, 2010. 9. 3, http://www.kores.net/
Beas-Bustos, E. and Crozier, R.D., 1992, “Moly/copper separation from concentrate of the combined acid and basic circuits at EI Teniente,” Minerals Engineering, Vol. 5, pp. 357-379.
Chander, S. and Fuerstenau, D.W., 1972, “On the natural floatability of molybdenite,” Transactions of AIME, Vol. 252, pp. 62-68.
Gupta, C.K., 1992, Ectractive metallurgy of molybdenum, CRC press, Bombay, India, pp. 1-404.
Park, C. H. and Jeon, H. S., 2010, “The effect of sodium silicate as pH modifier and depressant in the froth flotation of molybdenite ores,” Materials Transactions, Vol. 51, No. 7, pp. 1367-1369
Ronzio, R. A., 1970, “The role of surfactants in the flotation of molybdenite at climax,” Journal of the American Oil Chemists' Society, Vol. 47, pp. 504-508.
Smit, F.J. and Bhasina, K., 1985, “Relationship of petroleum hydrocarbon characteristics and molybdenite flotation,” Int. J. of Mineral Processing, Vol. 15, pp. 19-40.
Srdjan, M., 2007, Handbook of flotation reagents, ELSEVIER, Amsterdam, Netherlands, pp. 1-446.
Zanin, M., Ametov, I., Grano, S., Zhou, L. and Skinner, W., 2009, “A study of mechanisms affecting molybdenite recovery in a bulk copper/molybdenum flotation circuit,” Int. J. of Mineral Processing, Vol. 93, pp. 256-266.

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 : 48
No :1
Pages :25-33

[1] 김병수, 손정수, 이재천, 전호석, 2008, “몰리브덴 및 몰리브덴 화합물 제조기술 현황,” 재료마당, 제21권 4호, pp. 13-20.

[2] 박철현, 전호석, 김병곤, 김형석, 한오형, 2009, “동원 NMC 몰리브덴광의 부유선별 특성,” 한국지구시스템공학회지, 제46권 6호, pp. 754-760.

[3] 전호석, 박철현, 한오형, 김진형, 김병곤, 2008, “동원 NMC산 몰리브덴광의 부유선별 특성연구,” 한국지구시스템공학회 춘계학술발표, pp. 97-99.

[4] 최선규 외 8인, 2007, “금성 몰리브데늄광상의 잠푸 반암형 광체 대한 부존가능성과 성인적 환경,” 자원환경지질, 제40권 1호, pp. 1-14.

[5] 한국광물자원공사, 한국자원정보서비스, 2010. 9. 3, http://www.kores.net/

[6] Beas-Bustos, E. and Crozier, R.D., 1992, “Moly/copper separation from concentrate of the combined acid and basic circuits at EI Teniente,” Minerals Engineering, Vol. 5, pp. 357-379.

[7] Chander, S. and Fuerstenau, D.W., 1972, “On the natural floatability of molybdenite,” Transactions of AIME, Vol. 252, pp. 62-68.

[8] Gupta, C.K., 1992, Ectractive metallurgy of molybdenum, CRC press, Bombay, India, pp. 1-404.

[9] Park, C. H. and Jeon, H. S., 2010, “The effect of sodium silicate as pH modifier and depressant in the froth flotation of molybdenite ores,” Materials Transactions, Vol. 51, No. 7, pp. 1367-1369

[10] Ronzio, R. A., 1970, “The role of surfactants in the flotation of molybdenite at climax,” Journal of the American Oil Chemists' Society, Vol. 47, pp. 504-508.

[11] Smit, F.J. and Bhasina, K., 1985, “Relationship of petroleum hydrocarbon characteristics and molybdenite flotation,” Int. J. of Mineral Processing, Vol. 15, pp. 19-40.

[12] Srdjan, M., 2007, Handbook of flotation reagents, ELSEVIER, Amsterdam, Netherlands, pp. 1-446.

[13] Zanin, M., Ametov, I., Grano, S., Zhou, L. and Skinner, W., 2009, “A study of mechanisms affecting molybdenite recovery in a bulk copper/molybdenum flotation circuit,” Int. J. of Mineral Processing, Vol. 93, pp. 256-266.

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

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