Managing in situ gold concentrations in placers

Document Type: Research Paper

Author

Institute of Chemistry and Chemical Technology, Siberian Branch of the Russian Academy of Sciences, ICCT SB RAS, 50, Building 24, Akademgorodok, Krasnoyarsk, Siberia, Russia

Abstract

In studying of the in situ gravitational concentration process part feature for placer, the technological ability to transform the in situ massif placer structure is evident. The two main processes involved in altering the massif in situ have been examined and outlined in detail. The in situ disintegration of massif material results in a new massif gravitational stratification structure. Regularities of the distribution of particles in the array of alluvial gold in situ were obtained. These regularities showed us the possibilities for direct formation of zones with elevated gold concentrations. The disintegration feature separates particles in an aqueous medium and concentrates the full exemption in situ particulate matter within the placer massif. This method will reduce the volume of mining and ore processing and increase profitability.

Keywords


[1] Day, S., Fletcher, K. (1986). Particle Size and Abundance of Gold in Selected Stream Sediments, Journal of Geochemical Exploration, Vol. 26, No 3, 203-214.
[2] Cobb, E. (1973). Placer deposits of Alaska: U.S. Geological Survey Bulletin 1374, 213 p.
[3] Aucamp, P., van Schalkwyk, A. (2003). Trace element-pollution of soils by abandoned gold-mine tailings near Potchefstroom, S. Africa Bull. Eng. Geol. Environ. 62: 123-134.
[4] Kim, J.Y., Kim, K.W., Lee, J.U., Lee, J.S., Cook, J. (2002). Assessment of As and heavy metal concentration in the vicinity of duckum Au-Ag mine, Korea. Environ. Geochem. Health 24, 215-227.
[5] Shumlyanskyy, V., Ivantyshyna, O., Makarenko, M., Subbotin, A. (2005). Environmental pollution around the Muzhievo gold-base metal deposit, Ukraine. Manage. Environ. Qual. 16(6): 593-604.
[6] Gomes, J. and Martinez, G. (1979). Recovering by Product Heavy Minerals from Sand and Gravel, Placer Gold and Industrial Minerals Operations, Bureau of Mines, Report 8366.
[7] Sobolewski, V.I. (1983). Wonderful minerals, Education, Moscow, 192 p
[8] Mining Encyclopedia. (1991). Soviet Encyclopedia, Moscow, Volume 3.
[9] Derjaguin, B.V. (1968). Results of studies of the surface layers of liquids and their role in the stability of disperse systems. Paper Presented at the VI All - Union Jubilee Conference on Colloid Chemistry: Proceeding of Voronezh University Publishing: Voronezh, USSR, 1968, 4 - 6.
[10] Rehbinder, P.A. (1966). Processes of structure formation in disperse systems. Physical-chemical mechanics of dispersed structures, Nauka, Moscow.
[11] RU patent № 2106495(1998). Bull. № 7.
[12] Liakhov, G.M. (1982). Waves in grounds and porous multicomponent media. Nauka Moscow.
[13] Pol'kin, S.I. (1953). Ore-dressing, Metallurgizdat, Moscow.
[14] RU patent № 2391511, (2010). Bull. № 16.
[15] Chanson, H. (2009). Applied Hydrodynamics: An Introduction to Ideal and Real Fluid Flows. CRC Press, Taylor & Francis Group, Leiden, The Netherlands.
[16] Shumilov, Y. V. (1981). Physico-chemical factors and lithogenetic placer, Nauka, Moscow.
[17] Nesterenko, G.V. (1977). The methods of concentration of gold in placers.// Mineralogy and geochemistry of ore deposits in Siberia. Novosibirsk. "Science", 86 – 100.
[18] Zamyatin, O.V. (2012). Ore-dressing of gold sand at the gateway. Basic regularities and technological capabilities of the process, Gold mining, №.169.