Journals →  Tsvetnye Metally →  2018 →  #7 →  Back

BENEFICATION
ArticleName Quantitative evaluation of adsorption layer of combined diethyldithiocarbamate on chalkopyrite and arsenopyrite by method of measuring the parameters of surface relief
DOI 10.17580/tsm.2018.07.04
ArticleAuthor Matveeva T. N., Gromova N. K., Minaev V. A.
ArticleAuthorData

Institute of Comprehensive Exploitation of Mineral Resources, Russian Academy of Sciences, Moscow, Russia:
T. N. Matveeva, Head of Department, e-mail: tmatveyeva@mail.ru
N. K. Gromova, Researcher
V. A. Minaev, Leading Engineer

Abstract

An original technique was developed for quantitative evaluation of the adsorption layer of combined diethyldithiocarbamate on the surface of sulfide minerals; this involves the method of analyzing the mineral surface images from scanning laser microscopy using software VK-Analyzer. This program has extensive functions that allow conducting both 2D and 3D measurements. The originality and novelty of the approach in studying the thin reagent films on the surface of mineral samples is to compare the results of numerical measurements of the unevenness of the mineral relief before and after contact with the reagent solutions. Surface analysis of sulphide minerals before and after contact with reagent solutions was carried out on polished sections made in the form of polished plates 10102 mm. The primary evaluation of the homogeneity of the distribution of the reagents over the surface of mineral grains and the localization of their preferential concentration sites was carried out using an optical (Olympus BX 51) and scanning electron microscopy (LEO 1420 VP INCA 350). In this study, the most important type of polished image of the mineral was selected. Measurements were made on the following image parameters: elevation differences of the relief surface, linear dimensions of the contoured newly-formed phases of the reagent, measurement of the areas of the reagent phases on the surface of the section. The areas of the newly-formed phases of the reagent on the polished sections of sulphide minerals treated with combined diethyldithiocarbamate (DEDT) were determined. According to the results of measurements carried out in several areas of the field of view (with an increase of 20) with an area of (0.50–0.64)·10–6 μm2, the degree of coverage of the mineral surface by the DEDT reagent was 21.6% for arsenopyrite, 72.2% for chalcopyrite. At the same time, the fraction of the coating by the molecular form of adsorption of the reagent in the form of drops on arsenopyrite was 2.9% compared to 7.2% for chalcopyrite. The developed technique allows to quantify the adsorption of the reagent-collector on sulfide minerals and to experimentally substantiate the mechanism of action of the main forms of the collector.
The study was carried out with the financial support of the Russian Foundation for Basic Research in the framework of the scientific project No. 16-05-00646a.

keywords Сhalcopyrite, arsenopyrite, flotation reagents, collector, combined diethyldithiocarbamate, adsorption, surface, laser microscopy
References

1. Bocharov V. A., Ignatkina V. A., Chanturiya E. L., Yushina T. I. Technologies of complex processing of refractory pyritic ores and pyrite technogenic products with extraction of non-ferrous and rare metals. Tsvetnye Metally. 2016. No. 9. pp. 16–21.
2. Nagaraj D. R. New approach to reagent development and applications in the processing of base and precious metals ores. Proc. 24 th IMPC. Beijing, 24–28 September, 2008. pp. 1503–1512.

3. Kondos P., Gorain B. Development of breakthrough technologies for complex gold and copper-gold ores. Proc. XXVI IMPC. 24–28 September, 2012. New Delhi : Book of abstracts. Vol. 1. 27 p.
4. Phala N. Innovation drivers and opportunities across the gold metallurgy value stream. Proc. XXVI IMPC. 24–28 September, 2012. New Delhi : Book of abstracts. Vol. 1. 28 p.
5. Riccio P., Moore T. Development of AERORMX3048 Promoter for Oxiana’s Sepon Concentrator, South Central Laos. Proc. 24th IMPC. Beijing, 24–28 September, 2008. P. 1532–1541.
6. Shubov L.Ya., Ivankov S. I., Shcheglova N. K. Flotation reagents in the processes of mineral dressing. Book 1. Moscow : Nedra, 1990.
7. Solozhenkin P. M. Technology of dressing and processing of gold-antimony ores and concentrates. Progressive technologies of complex processing of mineral raw materials. Ed.: V. A. Chanturia. Moscow : Ore and Metals Publishing house, 2008. pp. 112–119.
8. Kondratyev S. A., Ryaboy V. I. Dithiophosphates collecting ability estimation and its relationship to selectivity of valuable component recovery. Obogashchenie Rud. 2015. No. 3. pp. 25–31.
9. Matveeva T. N., Gromova N. K., Ivanova T. A., Chanturiya V. A. The physicochemical effect of modified diethyldithiocarbamate on the surface of goldcontaining sulfides during the flotation of precious metal ores. Fiziko-tekhnicheskie problemy razrabotki poleznykh iskopaemykh. 2013. No. 5. pp. 147–156.
10. Matveeva T. N., Lantsova L. B. Test of reagent modes of gold-containing ore flotation with application of modified diethyldithiocarbamate and dithiocarbamic acid thioester. Tsvetnye Metally. 2014. No. 11. pp. 16–21.
11. Matveeva T. N., Ivanova T. A., Getman V. V., Gromova N. K. New flotation agents for recovery of micro- and nanoparticles of precious metals from rebellious ore. Gornyi Zhurnal. 2017. No. 11. pp. 89–93.
12. Chanturiya V. A., Ivanova T. A., Tyurnikova V. I. Modification of solutions of flotation agents with highly active compounds. V Congress of Concentrators of CIS Countries: Collection of scientific works. Vol. 3. Moscow : Alteks, 2005.

Language of full-text russian
Full content Buy
Back