Economic and Environmental Geology (자원환경지질)

The Korean Society of Economic and Environmental Geology (대한자원환경지질학회)
권호 표지
DOI QR코드

DOI QR Code

The Dissolution Efficiency of Gold Concentrate with Microwave-nitric Acid Leaching and the Recovery of Invisible Gold Using the Filter Paper

마이크로웨이브-질산용출에 의한 금 정광의 용해효율과 여과지를 이용한 비-가시성 금 회수

  • Lee, Jong-Ju (Dept. of Energy and Resource Engineering, Chosun University) ;
  • Park, Cheon-Young (Dept. of Energy and Resource Engineering, Chosun University)
  • 이종주 (조선대학교 에너지.자원공학과) ;
  • 박천영 (조선대학교 에너지.자원공학과)
  • Received : 2019.08.27
  • Accepted : 2019.11.06
  • Published : 2019.12.28
Download PDF
⟨ Previous Next ⟩

Abstract

The purpose of this study was simply to obtain gold through a microwave-nitric acid experiment of invisible gold concentrate with the use of filter paper. For the purpose, this study conducted a microwave-nitric acid leaching experiment and examined nitric acid concentration. As a result of the experiment, this study discovered that Fe, Te and Ag were completely leached in the leaching solution whereas Au was not determined in all of the nitric acid conditions. The leaching solution was filtered with three filter papers and then these filter papers were analyzed with SEM/EDS. As a result of the EDS analysis, Au was detected in all of the surface and cross-section of the 1st, 2nd and 3rd filter papers. As the three filter papers containing solid-residue were analysed in the lead-fire assay, gold particles were found in all of the nitric acid conditions. In the lead-fire assay, maximum gold(452.50g/t) was recovered when nitric acid concentration was 6M and microwave leaching time was 12mins.

본 연구 목적은 비-가시성 금 정광을 마이크로웨이브-질산용출 시키고, 여과지를 이용하여 금을 단순하게 얻고자 하였다. 본 실험에서 사용된 시료의 경우 질산농도별로 마이크로웨이브-질산용출실험을 수행한 결과 Fe, Te, Ag 등은 완전용출(100%) 되었지만, Au는 용해되지 않았다. 용출용액을 3장의 여과지로 여과하여 SEM/EDS 분석한 결과 첫 번째, 두 번째 및 세 번째 여과지의 표면 및 단면 모두에서 Au가 검출되었다. 고체-잔류물이 포함된 여과지 3장을 모두 납-시금법에 사용한 결과 질산농도 모두에서 금 입자들이 회수되었다. 최대 금 입자(452.50g/t)가 얻어진 용출조건은 질산농도 6M에서 그리고 마이크로웨이브 조사시간 12분에서였다.

Keywords

References

  1. Allan, G.C. and Woodcock, J.T. (2001) A review of the flotation of native gold and electrum, Minerals Engineering, v.14, p.931-962. https://doi.org/10.1016/S0892-6875(01)00103-0
  2. Antony, A., Low, J.H., Gray, S., Childress, A.E., Le-Clech, P. and Leslie, G. (2011) Scale formation and control in high pressure membrane water treatment systems: a review, Journal of Membrane Science, v.383, p.1-16. https://doi.org/10.1016/j.memsci.2011.08.054
  3. Balcerzak, M. (2002) Sample digestion methods for the determination of traces of precious metals by spectrometruc techniques, Analytical Sciences, v.18, p.737-750. https://doi.org/10.2116/analsci.18.737
  4. Cheng, Y., Shen, S., Zhang, J., Chen, S., Xiong, L. and Liu, J. (2013) Fast and effective gold leaching from a desulfurized gold ore using acidic sodium chlorate solution at low temperature, Industrial & Engineering Chemistry Research, v.52, p.16622-16629. https://doi.org/10.1021/ie4026852
  5. Dominy, S.C., Platten, I.M. and Raine, M.D. (2003) Grade and geological continuity in high-nugget effect gold-quartz reefs: implications for resource estimation and reporting, Applied Earth Science, v.112, p.B239-B259. https://doi.org/10.1179/037174503225003116
  6. Droppert, D.J. and Shang, Y. (1995) The leaching behaviour of nickeliferous pyrrhotite concentrate in hot nitric acid, Hydrometallurgy, v.39, p.169-182. https://doi.org/10.1016/0304-386X(95)00034-E
  7. Fair, K.J. and Basa, F.J. (1989) Treatment of Agnico Eagle's silver-bearing flotation concentrate by the nitrox process, Processing of Complex Ores, v.20-24, p.411-420. https://doi.org/10.1016/B978-0-08-037283-9.50041-X
  8. Fair, K.J., Schneider, J.C. and van Weert, G. (1987) Options in the Nitrox process, Proceedings of the metallurgical Society of the Canadian Institute of Mining and metallurgy, p.279-291.
  9. Gao, G., Li, D., Zhou, Y., Sun, X. and Sun, W. (2009) Kinetics of high-sulphur and high-arsenic refractory gold concentrate oxidation by dilute nitric acid under mild conditions, Minerals Engineering, v.22, p.111-115. https://doi.org/10.1016/j.mineng.2008.05.001
  10. Guo, W., Ngo, H.H. and Li, J. (2012) A mini-review on membrane fouling, Bioresource Technology, v.122, p.27-34. https://doi.org/10.1016/j.biortech.2012.04.089
  11. Habashi, F. (1973) Action of nitric acid on chalcopyrite, Transactions, v.254, p.224-228.
  12. Hasab, M.G., Rashchi, F. and Raygan, S. (2013) Simultaneous sulfide oxidation and gold leaching of a refractory gold concentrate by chloridehypochlorite solution, Minerals Engineering, v.50-51, p.140-142. https://doi.org/10.1016/j.mineng.2012.08.011
  13. Ibrahim, T.M.M. and El-Hussaini, O.M. (2007) Production of anhydrite-gypsum and recovery of rare earths as a by-product, Hydrometallurgy, v.87, p.11-17. https://doi.org/10.1016/j.hydromet.2006.11.017
  14. Iritani, E., Katagiri, N., Takenaka, T. and Yamashita, Y. (2015) Membrane pore blocking during cake formation in constant pressure and constant flux dead-end microfiltration of very dilute colloids, Chemical Engineering Science, v.122, p.465-473. https://doi.org/10.1016/j.ces.2014.09.052
  15. Jotanovic, A., memic, M., Suljagic, S. and Huremovic, J. (2012) Comparison of x-ray fluorescent analysis and cupellation method for determination of gold in gold jewellery alloy, Bulletin of the Chemists and Technologists of Bosnia and Herzegovina, v.38, p.13-18.
  16. Kim, B.J., Cho, K.H., Jo, J.Y., Choi, N.C. and Park, C.Y. (2014) The characteristic of Te recovery in gold concentrate using electrolysis, Econ. Environ. Geol., v.47, p.645-655. https://doi.org/10.9719/EEG.2014.47.6.645
  17. Kim, E., Horckmans, L., Soppren, J., Vrancken, K.C., Quaghebeur, M. and Broos, K. (2017) Selective leaching of Pb, Cu, Ni and Zn from secondary lead smelting residues, Hydrometallurgy, v.169, p.372-381. https://doi.org/10.1016/j.hydromet.2017.02.027
  18. Kim, H.S., Oyunbileg, P. and Park, C.Y. (2019a) A study on the removal of penalty elements and the improvement of gold contents from gold concentrate using microwave-nitric acid leaching, J. Miner. Soc. Korea, v.32, p.1-14. https://doi.org/10.9727/jmsk.2019.32.1.1
  19. Kim, H.S., Myung, E.J. and Park, C.Y. (2019b) Removal of penalty from invisible gold concentrate using microwave-nitric acid leaching and its gold recovery by lead-fire assay, J.Korean Soc. Miner. Energy Resour. Eng., v.56, p.217-226. https://doi.org/10.32390/ksmer.2019.56.3.217
  20. Komnitsas, C. and Pooley, F.D. (1989) Mineralogical characteristics and treatment of refractory gold ores, Minerals Engineering, v.2, p.449-457. https://doi.org/10.1016/0892-6875(89)90080-0
  21. La Brooy, S.R., Linge, H.G. and Walker, G.S. (1994) Review of gold extraction from ores, Minerals Engineering, v.7, p.1213-1241. https://doi.org/10.1016/0892-6875(94)90114-7
  22. McDonald, I., Hart, R.J. and Tredoux, M. (1994) Determination of the platinum-group elements in South African kimberlite by nickel sulphide fireassay and neutron activation analysis, Analytical Chimica Acta, v.289, p.237-247. https://doi.org/10.1016/0003-2670(94)80108-8
  23. Rao, C.R.M. and Reddi, G.S. (2000) Platinum group metals(PGM); occurrence, use and recent trends in their determination, Trends in Analytical Chemistry, v.19, p.565-586. https://doi.org/10.1016/S0165-9936(00)00031-5
  24. Shirazi, S., Lin, C.J. and Chen, D. (2010) Inorganic fouling pressure-driven membrane processes- a critical review, Desalination, v.250, p.236-248. https://doi.org/10.1016/j.desal.2009.02.056
  25. Wang, Y., Baker, L.A. and Brindle, I.D. (2016) Determination of gold and silver in geological samples by focused infrared digestion: a reinvestigation of aqua regia digestion, Talanta, v.148, p.419-426. https://doi.org/10.1016/j.talanta.2015.11.019
  26. Yanuar, E. and Suprapto (2015) Leaching and adsorption of gold from lape-Sumbawa rocks(Indonesia) by hypochlorite-chloride, Procedia Chemistry, v.17, p.59-65. https://doi.org/10.1016/j.proche.2015.12.134