Agglomeration of Gold in Alumosilicate Matrices
https://doi.org/10.56304/S2304487X2102005X
Abstract
The widespread use and improvement of laser technologies in the economies of the most developed countries is a global trend in world development. The use of laser technologies is crucial for increasing labor productivity and competitiveness of the national economy, expanding the possibilities of its integration into the world economic system. The possibility of using laser technologies for the processing of technogenic mineral raw materials is considered. The ability of laser radiation to create high heat flux densities in a locally limited area of the surface, sufficient to heat, melt, or evaporate almost any material, is the basis for laser processing of materials. An LS-06 technological cw ytterbium fiber laser with a wavelength of 1060 nm serves as a powerful source of a directed energy flux during laser processing. The effect of continuous laser radiation on mineral objects containing gold, which cannot be extracted by gravitational methods, has been studied. As the studied objects, natural mineralogical samples with an aluminosilicate matrix from a placer deposit were selected. All mineralogical samples contained metal particles, including gold in the form of impurities. As a result of laser processing of gold-bearing mineralogical samples, the formation of fused objects - conglomerates was established. Scanning electron microscopy revealed that after laser energy exposure, the samples were superficially micro-inhomogeneous silicate cakes, on the surface of which agglomerated crystal structures of gold were formed, ranging in size from 300 nm to 30 μm. It has been established in the work that the optimal radiation power of this laser source is in the range from 90 to 180 W.
About the Authors
G. G. Kapustina
Pacific State University
Russian Federation
Russian Federation
680035
Khabarovsk
N. A. Leonenko
Khabarovsk Federal Research Center, Institute of Mining, Far Eastern Branch, Russian Academy of Sciences
Russian Federation
Russian Federation
680000
Khabarovsk
E. I. Kramar
Pacific State University
Russian Federation
Russian Federation
680035
Khabarovsk
References
1. Perspektivnye geotehnologii [Promising geotechnologies] / otv. redaktor N. P. Jushkin, Sankt Peterburg, Nauka, 2010, 376 p.
2. Lazernaja tehnika i tehnologija. Kn. 1. Fizicheskie osnovy tehnologicheskih lazerov: uch. posob. dljavuzov [Laser technology and technology. Book 1. Physical foundations of technological lasers] / Golubev V. S., Lebedev F. V. ; pod red. Grigor’janca A. G. Moscow, Vyssh. shk., 1987. 191 p.
3. Bulgakov L. V., Bulgakova N. M., Burakov I. M. i dr., Sintez nanorazmernyh materialov pri vozdejstvii moshhnyh potokov jenergii na veshhestvo [Synthesis of nanosized materials under the influence of powerful energy flows on matter], Novosibirsk, Institut teplofiziki SO RAN, 2009, 462 p.
4. Vanina E. A., Gal’cov A. A., Leonenko N. A., Kapustina G. G., Issledovanie processov lazernoj aglomeracii ul’tradispersnogo i kolloidno-ionnogo zolota [Investigation of the processes of laser agglomeration of ultrafine and colloidal-ionic gold], Perspektivnye materialy. Specvypusk (13), 2011, Materialy XI Rossijsko-Kitajskogo Simpoziuma ”Novyematerialy i tehnologii”, T. 1, 10–14 oktjabrja 2011, Sankt Peterburg, Interkontakt Nauka, Moskva, Rossija, pp. 144–148.
5. Kapustina G. G., Fizicheskie metody issledovanija vozdejstvija lazernogo izluchenija na ul’tradispersnye mineral’nye sredy [Physical methods for studying the effect of laser radiation on ultradispersed mineral media], Gornyj informacionno-analiticheskij bjulleten' (nauchno-tehnicheskij zhurnal), 2012, no. 4, pp. 385–389.
6. Sovremennye problemy regional’nogo razvitija [Modern problems of regional development], [Jelektronnyj resurs]: tezisy VII Vseros. nauch. konf. Birobidzhan, 9–11 oktjabrja 2018 g. / pod red. E. Ja. Frismana, Birobidzhan: IKARP DVO RAN – FGBOU VO “PGU im. Sholom-Alejhema”, 2018, 459 p.
7. Vanina E. A., Veselova E. M., Leonenko N. A., Simulation of nonlinear effects at laser modification of the surface minerals with gold, Proceedings of SPIE – The International Society for Optical Engineering, 2016, V. 10176. P. 101761V. DOI: 10.1117/12.2268309.
8. Leonenko N. A., Kuz’menko A. P., Siljutin I. V., Rasskazov I. Ju., Sekisov G. V., Gurman M. A., Kapustina G. G., Shvec N. L., Sposob izvlechenija dispersnogo zolota iz zolotosoderzhashhego vysokoglinistogo mineral’nogo syr’ja [Method of extracting dispersed gold from gold-bearing high-clay mineral raw materials], Patent RF, no. 2413779, 2011.
9. Kuz’menko A. P., Hrapov I. V., Kuz’menko N. A., Leonenko N. A., Sposob vydelenija ul’tradispersnyh i kolloidno-ionnyh blagorodnyh vkljuchenij iz mineral’nogo syr’ja i tehnogennyh produktov i ustanovka dlja ego osushhestvlenija [Method for the isolation of ultrafine and colloidal-ionic noble inclusions from mineral raw materials and man-made products and installation for its implementation], Patent RF, no. 2541248, 2015.
Review
For citations:
Kapustina G.G., Leonenko N.A., Kramar E.I. Agglomeration of Gold in Alumosilicate Matrices. Vestnik natsional'nogo issledovatel'skogo yadernogo universiteta "MIFI". 2021;10(2):124-128. (In Russ.) https://doi.org/10.56304/S2304487X2102005X
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