Journals →  Eurasian mining →  2019 →  #1 →  Back

ArticleName Improvement of porphyry copper flotation efficiency with auxiliary collecting agents based on acetylene alcohols
DOI 10.17580/em.2019.01.06
ArticleAuthor Yushina T. I., Purev B., D’Elia Yanes K. S., Malofeeva P. R.

College of Mining, NUST MISIS, Moscow, Russia:

Yushina T. I., Head of Chair, Professor, Candidate of Engineering Sciences,
D’Elia Yanes K. S., Post Graduate Student
Malofeeva P. R., Post Graduate Student

Erdenet, Mongolia:

Purev B., Post Graduate Student


The article presents the research findings on potential enhancement of porphyry copper flotation efficiency at Erdenet processing plant, Mongolia, by means of improvement of reagent regime with addition of auxiliary collectors from tertiary acetylene alcohols class. Reagents DC-80 (2-methyl-3-butyn-2-ol) (CH3)2C(OH)–C≡CH and DMIPEC (2,5-dimethylhexen-1-in-3-ol-5) (CH3)2C(OH)–C≡C–C(CH3)=CH2 were tested in laboratory-scale flotation of current production ore. The test data of the reagents used as base and auxiliary collectors are reported. It is found that acetylene alcohols display foaming properties in flotation of copper–molybdenum ore. Combination of solidophil acetylene and hydrophilic alcohol groups in the structure of molecules of the reagents attributes them with properties of collectors–frothers. It is assumed that interaction of the reagents with mineral surface results in formation of metal–alkyne -system. The testing results show that the collectors based on tertiary acetylene alcoh ols perform the most efficiently when fed by doses both in preparation circuit (milling), and in the bulk and selective flotation, in combination with the currently used reagents, including BK-901B (dialkyl dithiophosphate–dialkyl dithiocarbamate), AeroMX5152 (15–40% allylic amyl xanthate ester), diesel fuel grade E and methyl isobutyl carbinol MIBC. The use of the reagents based on acetylene alcohols at the consumption of 12–20 g/t increases recovery of molybdenum in molybdenum concentrate by 6–8% and copper in copper concentrate by 1–1.5% as compared with the standard reagent regime currently in operation at the processing plant. The study of flotation kinetics with auxiliary collectors DC-80 and DMIPEC in the bulk and selective circuits reveals potential reduction in flotation time by 35–40% as against the standard regime of the processing plant at the same technological data.
The authors appreciate participation of K. E. Bekhtemisov and M. O. Kenes, Candidates for a Master’s Degree, NUST MISIS, in this study.

keywords Porphyry copper, molybdenite, chalcopyrite, combination of collectors, tertiary acetylene alcohols, flotation reagents, dimethyl(siopropenylacetenyl) carbinol (DMIPEC) and DC-80, acetylene bond, compounds based in π-bonds, molybdenum recovery

1. Abramov A. A. Theory of creation of innovation flotation technologies. Part III. Theory of intensification of technological processes of flotation. Tsvetnye Metally. 2013. No. 4. pp. 12–17.

2. Abramov A. A. Flotation methods of concentration : Textbook. 4th revised and enlarged edition. Moscow : Gornaya kniga, 2016. 595 p.
3. Bulatovic S. M. Handbook of Flotation Reagents. Chemistry, Theory and Practice. Flotation of Sulfide Ores. Amsterdam : Elsevier Science, 2007. Vol. 1. 446 p.
4. Abramov A. A. Requirements to the choice and designing of selective reagents-collectors. Part 2. Requirements to physical-chemical properties of selective reagents-collectors. Tsvetnye Metally. 2012. No. 5. pp. 14–17.
5. Ivankov S. I. Avenues of advancement in mineral dressing by flotation. Moscow : URSS, 2015. 152 p.
6. Mergenbaatar N. Improvement of flotation efficiency of copper–molybdenum ore by adjustment of reagent regime with application of multi-component collectors : thesis of inauguration of Dissertation … of Candidate of of Engineering Sciences. Moscow, 2005. 23 p.
7. Sataev I. Sh., Baranov V. F. Upon the world practice of copperporphyry ores dressing (review). Obogashchenie Rud. 2011. No. 4. pp. 45–49.
8. Zhigang Yin, Wei Sun, Yuehua Hu, Chenhu Zhang, Qingjun Guan, Chenyang Zhang. Separation of Molybdenite from Chalcopyrite in the Presence of Novel Depressant 4-Amino-3-thioxo-3,4-dihydro-1,2,4-triazin-5(2H)-one. Minerals. 2017. Vol. 7, Iss. 8.
9. Zanin M., Ametov I., Grano S., Zhou J., Skinner W. A study of mechanisms affecting molybdenite recovery in a bulk copper/molybdenum flotation circuit. International Journal of Mineral Processing. 2009. Vol. 93, Iss. 3-4. pp. 256–266.
10. Gde Pandhe Wisnu Suyantara, Tsuyoshi Hirajima, Hajime Miki, Keiko Sasaki. The use of Fenton’s reagent on selective flotation of chalcopyrite and molybdenite. Proceedings of the 29th International Mineral Processing Congress. Moscow, 2019. pp. 1862–1871.
11. Gang Zhao, Jing Peng, Hong Zhong, Shuai Wang, Guangyi Liu. Synthesis of novel ether thionocarbamates and study on their flotation performance for chalcopyrite. Minerals. 2016. Vol. 6, Iss. 3.
12. Yushina T. I., Malyshev O. A., Shchelkunov S. A., Khrustalev D. P. Peculiarities of the DC-80 reagent based on acetylenic alcohols effect in flotation processes. Non-ferrous Мetals. 2016. No. 2. pp. 7–11. DOI: 10.17580/nfm.2016.02.02
13. Yushina T. I., Malyshev O. A., Shchelkunov S. A. Flotation of gold-bearing ores of non-ferrous metals using the acetylene alcohol based reagents. Tsvetnye Metally. 2017. No. 2. pp. 13–19. DOI: 10.17580/tsm.2017.02.01
14. Yushina T. I., D’Elia K., Malyshev O. A., Ogrel L., Petrov I. Flotation of gold-bearing non-ferrous ores with acetylene alcoholbased reagents. Proceedings of the 29th International Mineral Processing Congress. Moscow, 2019. pp. 1425–1433.
15. Yushina T. I., D’Elia K. Improvement of copper–molybdenum ore flotation technology with agents based on acetylene alcohols. XVII All-Russian Conference–Competition of Students and Post-Graduate Students in Geology, Petroleum, Energy, Machine Building and Metallurgy : Proceedings, Saint-Petersburg, 2019. p. 197.
16. Baatarkhuu Zh., Rukavishnikov O. A. Operating procedure for processing of copper–molybdenum ore of the Erdenetiyn-Ovoo deposit at Erdenet processing plant. 2014. 179 p.
17. Feasibility study : Development concept of Erdenet in 2016–2025 with annual ore production of 40 Mt art Erdenet processing plant, Mongolia. Erdenet, 2016.

Full content Improvement of porphyry copper flotation efficiency with auxiliary collecting agents based on acetylene alcohols