Journals →  Tsvetnye Metally →  2019 →  #11 →  Back

Kola MMC JSC: on the way to new technologies
METALLURGY
ArticleName Extraction of cobalt (II) from chloride solutions using tertiary amines with aliphatic ketones
DOI 10.17580/tsm.2019.11.04
ArticleAuthor Kasikov A. G., Diakova L. V., Bagrova E. G., Khomchenko О. А.
ArticleAuthorData

I. V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of the Russian Academy of Sciences Kola Science Center, Apatity, Russia:

A. G. Kasikov, Head of Laboratory, Candidate of Chemical Sciences, Associate Professor, e-mail: kasikov@chemy.kolasc.net.ru
L. V. Diakova, Senior Researcher, Candidate of Technical Sciences, Associate Professor
E. G. Bagrova, Engineer

 

Kola Mining and Metallurgical Company JSC, Monchegorsk, Russia:
О. А. Khomchenko, Chief Specialist of Science and Technology Development Department, Engineering Center, Candidate of Technical Sciences, Associate Professor

Abstract

The process that is currently adopted by Kola MMC for processing cobalt concentrate involves the use of hydrochlorides. The resultant product includes strong solutions of nickel-cobalt chlorides. Through liquid extraction, cobalt is then extracted from the above solutions with the help of tertiary amines in an inert diluent mixed with aliphatic alcohols. The latter act as a modifier and hinder the formation of the second organic phase. During the process introduction period, a number of issues arose that required process optimization. One of the factors affecting the extraction performance includes high viscosity of organic mixtures. It leads to slower diffusion at the phase boundary, increased creaming time, and the cobalt extract bleeding into the aqueous phase. The paper analyses and compares aliphatic high-molecular alcohols and ketones when they are used as modifiers of tertiary amine-based extraction mixtures. It was established that the currently used alcohols lead to increased viscosity of extraction mixtures and cobalt extracts. Moreover, they inhibit cobalt extraction due to stable solvates being formed. Unlike alcohols, aliphatic ketones not only have the capacity to significantly decrease the extract viscosity, but they also enhance cobalt extraction from chloride solutions and raise the capacity of extraction mixtures in application to cobalt. Thus, under comparable conditions the concentration of cobalt in the extract containing 30% trioctylamine and a portion of 2-undecanone was 13.1 g/dm3, whereas for the mixture of trialkylamine and alcohols it was only 9.9 g/dm3. Accounting for low solubility and high flash point, it is recommended that 2-undecanone should be used as a modifier in Kola MMC’s cobalt extraction process.

keywords Cobalt, liquid extraction, viscosity, tertiary amines, aliphatic alcohols, ketones
References

1. Basudev Swain, Sung-Soo Cho, Gat Ho Lee, Sunghyun Uhm. Extraction/Separation of Cobalt by Solvent Extraction: A Review. Applied Chemistry for Engineering. 2015. Vol. 26, No. 6. pp. 631–639.
2. Sole K. C. The Evolution of Cobalt–Nickel Separation and Purification Technologies: Fifty Years of Solvent Extraction and Ion Exchange. Extraction 2018: Proceedings of the First Global Conference on Extractive Metallurgy. 2018. pp. 1167–1191.
3. Kasikov A. G. Research and developments of the Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials in the area of chemistry and cobalt technology. Vestnik Kolskogo nauchnogo tsentra RAN. 2015. No. 3. pp. 54–63.
4. Kasikov A. G., Dyakova L. V., Khomchenko O. A. Mastering of extraction technology of new cobalt production in Kola MMC. Tsvetnye Metally. 2018. No. 1. pp. 14–19.
5. Giganov V. G., San U Aung. Extraction of tungsten with the salts of secondary and tertiary amines. Uspekhi v khimii i khimicheskoy tekhnologii. 2015. Vol. 29, No. 6. pp. 95–97.
6. Bringas E., San R., Fresnedo M., Ortiz I. Removal of anionic pollutants from groundwaters using Alamine 336: chemical equilibrium modelling. Journal of Chemical Technology and Biotechnology. 2006. Vol. 81. pp. 1829–1835.
7. Khanramaki F., Safdari J., Shirani A. S., Torkaman R. Investigations on the complete removal of iron (III) interference on the uranium (VI) extraction from sulfate leach liquor using Alamine 336 in kerosene. Radiochimica Acta. 2018. April. pp. 1–13.
8. Petrova A. M., Kasikov A. G. Rhenium (VII) solvent extraction with mixtures of tertiary amine and oxygen-containing extractants from sulphate media. Hydrometallurgy. 2016. Vol. 165. pp. 270–274.
9. Gaikwad A. P., Suryavanshi V. J., Anuse M. A. Liquid-liquid extraction studies of ruthenium (III) from malonate medium using n-octylaniline as an ion-pairing reagent: study of catalyst and alloys. Bulgarian Chemical Communications. 2017. Vol. 49, No. 4. pp. 914–922.
10. Shmidt V. S. Extraction with amines. Moscow : Atomizdat, 1980. 264 p.
11. Medkov M. A., Steblevskaya N. I., Smolkov A. A., Zheleznov V. V. Extraction of metals with aliphatic amines in the presence of octyl alcohol. Zhurnal neorganicheskoy khimii. 1990. Vol. 35, No. 9. pp. 2016–2019.
12. Panigrahi S., Dash T., Nathsarma K. C., Sarangi K. Extraction of Ruthenium using Both Tertiary and Quaternary Amine from Chloride Media. Separation Science and Technology. 2014. Vol. 49, No. 4. pp. 545–552.
13. Akimova I. D., Molchanova T. V., Shchipanova R. S., Golovko V. V. Extraction of sulfuric acid from hydrolysis waste in titanium dioxide production. Tsvetnye Metally. 2018. No. 10. pp. 54–68.
14. Filiz M., Sayar N. A., Sayar N. A. Extraction of cobalt (II) from aqueous hydrochloric acid solutions into Alamine 336–m-xylene mixtures. Hydrometallurgy. 2006. Vol. 81, No. 3-4. pp. 167–173.
15. Sayar N. A., Filiz M., Sayar A. A. Extraction of Co (II) and Ni (II) from concentrated HCl solutions using Alamine 336. Hydrometallurgy. 2009. Vol. 96, No. 1. pp. 148–153.
16. Dzhivanova Z. V., Belova E. V. Application of the Izopar-M diluent in extraction treatment of waste nuclear fuel. Proceedings of the Russian Academy of Sciences Kola Science Center. Chemistry and Materials Science. 2018. Vol. 2, No. 1. pp. 262–265. DОI: 10.25702/KSC.230.
17. Mizza M. Etal. Liquid-liquid extraction by tri-iso-octylamine in methyl isobutyl ketone from aqueous hydrochloric acid. Analytiсa Chimica Acta. 1967. Vol. 37. pp. 402–404.
18. Diakova L. V., Kasikov A. G., Kadyrova G. I. Influence of the nature and concentration of the modifier on the extraction of cobalt from chloride solutions with trioctylamine. Zhurnal prikladnoy khimii. 2012. No. 11. pp. 1184–1887.
19. Medkov M. A., Steblevskaya N. I., Shumilina E. V., Kashtaeva V. N. Extraction of indium (III) with aliphatic amines in the presence of methyl hexyl ketone. Zhurnal neorganicheskoy khimii. 1989. Vol. 34, No. 9. pp. 2280–2283.

Language of full-text russian
Full content Buy
Back