Journals →  Tsvetnye Metally →  2015 →  #8 →  Back

NOBLE METALS AND ALLOYS
ArticleName Research of sulfiding roasting of scorodite arsenic removal during processing of refractory oxidized gold-bearing ores
DOI 10.17580/tsm.2015.08.04
ArticleAuthor Boboev I. R., Strizhko L. S., Bobozoda Sh. B., Gorbunov E. P.
ArticleAuthorData

Chair of Non-Ferrous Metals and Gold, National University of Science and Technology “MISiS”, Moscow, Russia:

I. R. Boboev, Junior Researcher
L. S. Strizhko, Professor, e-mail: sls_2007.47@mail.ru

E. P. Gorbunov, Post-Graduate Student


Ministry of Industry and New Technologies of Republic of Tajikistan, Dushanbe, Republic of Tajikistan:
Sh. B. Bobozoda, Minister

Abstract

Nowadays, research of solid substance reaction kinetics is one of the main problems of chemical kinetics. The process intensification possibilities are mostly defined by the state of kinetic researches. In connection with this, it is interesting to research the sulfiding process in scorodite-sulfider system in reducing atmosphere, created by graphite. A unique peculiarity of such topochemical systems is the process localization within reaction zone on the surface of solid reagent and solid reaction product phase division. This article shows the research results of kinetics of arsenic removement from scorodite in sulfiding roasting process. The reaction order in reagent and activation energy were defined on the basis of experimental data. The limiting stage of the process was also defined. On the basis of the carried out researches, the basic reactions during sulfiding were offered and approved by thermodynamic calculations and chemical analysis. The basic results of this technology testing are shown, as applied to the refractory oxidized ores, where arsenic is basically concentrated in scorodite. Arsenic removal is approved not only by chemical and quantitative X-ray phase analysis, but also by qualitative phase analysis. The industrial application of this technology allows to carry out the environmentally safe and efficient processing of similar refractory goldbearing ores.

keywords Sulfiding roasting, arsenic, scorodite, gold-bearing ore, kinetic researches, reaction order, activation energy, limiting stage
References

1. Chetverikov S. D. Rukovodstvo k petrokhimicheskim pereschetam khimicheskikh analizov gornykh porod i opredeleniyu ikh khimicheskikh tipov (Guidance to petrochemical recalculations of chemical analysis of rocks and definition of their chemical types). Moscow : State Scientific-Technical Publishing House of Geology and Subsoil Protection Literature, 1956. 248 p.
2. Harris G. B. Minor Elements 2000 : Processing and Environmental Aspects of As, Sb, Se, Te, and Bi. Littleton : Society for Mining, Metallurgy and Exploration, 2000. pp. 3–7.
3. Kopylov N. I. Problema myshyaksoderzhashchikh otvalov metallurgii tyazhelykh tsvetnykh metallov i ikh minimizatsiya (Problem of arseniccontaining dumps of heavy non-ferrous metal metallurgy and their minimization). Vestnik Karagandinskogo Gosudarstvennogo Universiteta = Byulletin of Karaganda State University. 2012. No. 2 (66). pp. 31–35.
4. Riveros P. A., Dutrizac J. E., Spencer P. Canadian Metallurgical Quarterly. 2001. Vol. 40, No. 4. pp. 395–420.
5. Kopylov N. I. Problemy myshyaksoderzhashchikh otvalov tsvetnoy metallurgii (Problems of arsenic-containing dumps of non-ferrous metallurgy). Tsvetnye Metally = Non-ferrous metals. 2013. No. 3. pp. 30–35.
6. Bortnikova S. B., Gaskova O. L., Ayriyants A. A. Tekhnogennye ozera (Anthropogenic lakes). Novosibirsk : Publishing House “Geo”, 2003. 120 p.
7. Bortnikova S. B., Gaskova O. L., Bessonova E. P. Geokhimiya tekhnogennykh sistem (Geochemistry of anthropogenic systems). Novosibirsk : Publishing House “Geo”, 2006. 169 p.
8. Gaskova O. L., Bortnikova E. P., Bortnikova S. B., Androsova N. V. Eksperimentalnoe modelirovanie okislitelnogo vyshchelachivaniya khvostov peredela nikel-kobaltovykh rud (Experimental modeling of oxidation leaching of tails of nickel-cobalt ore production stage). Khimiya v interesakh ustoychivogo razvitiya = Chemistry for Sustainable Development. 2000. Vol. 8, No. 3. pp. 373–380.

9. Gaskova O. L., Bortnikova S. B. Ayriyants A. A., Kolmogorov Yu. P., Pashkov M. V. Geokhimicheskie osobennosti tekhnogennogo ozera, soderzhashchego otkhody tsianirovaniya zoloto-arsenopirit-kvartsevykh rud (Geochemical peculiarities of anthropogenic lake, containing wastes of cyanidation of gold-arsenopyrite-quartz ores). Geokhimiya = Geochemistry International. 2000. No. 3. pp. 317–328.
10. Strizhko L. S., Boboev I. R., Treshchetenkov E. E., Treshchetenkova I. L., Khayrullina R. T. Sposob izvlecheniya zolota iz okislennykh zolotomyshyakovistykh rud (Method of gold extraction from oxidized goldarsenic ores). Patent RF, No. 2485189, IPC7 C 22 B 11/02. Applied: May 10, 2012. Published: June 07, 2013.
11. Strizhko L. S., Boboev I. R., Gurin K. K. et al. Razrabotka gidrometallur gicheskoy tekhnologii pererabotki okislennykh zolotosoderzhashchikh rud Tarrorskogo mestorozhdeniya (Development of hydrometallurgical processing technology of oxidized gold-bearing Tarror deposit ores). Tsvetnye Metally = Non-ferrous metals. 2013. No. 4. pp. 46–49.
12. Strizhko L. S., Bobokhonov B. A., Boboev I. R. Razrabotka tekhnologii izvlecheniya zolota iz okislennykh rud, soderzhashchikh myshyak (Development of gold extraction technology from oxidated arseniccontaining ores). Sbornik nauchnykh trudov SWorld (Collection of scientific proceedings SWorld). October, 2011. pp. 37–43.

Language of full-text russian
Full content Buy
Back