2016-Sustainable Industrial Processing Summit
SIPS 2016 Volume 5: Starkey Intl. Symp. / Mineral Processing

Editors:	Kongoli F, Kumar P, Senchenko A, Klein B, Silva A.C., Sun C, Mingan W
Publisher:	Flogen Star OUTREACH
Publication Year:	2016
Pages:	270 pages
ISBN:	978-1-987820-44-7
ISSN:	2291-1227 (Metals and Materials Processing in a Clean Environment Series)

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Experimental study of high-voltage nanosecond pulses effect on the structure surface and microhardness of kimberlite rock-forming minerals

Igor Bunin¹; Valentine Chanturiya¹; Nataliya Anashkina¹; Maria Ryazantseva¹; Elizaveta Koporulina²;
¹RESEARCH INSTITUTE OF COMPREHENSIVE EXPLOITATION OF MINERAL RESOURCES RUSSIAN ACADEMY OF SCIENCE, Moscow, Russian Federation; ²INSTITUTE OF COMPREHENSIVE EXPLOITATION OF MINERAL RESOURCES, Moscow, Russian Federation;
Type of Paper: Regular
Id Paper: 14
Topic: 5

Abstract:

In this paper the efficiency of non-thermal high-power (high-voltage) nanosecond electromagnetic pulses for the directional change of phase (functional and chemical) composition and technological properties of kimberlite rock-forming minerals (olivine, serpentine and calcite) and diamonds investigated using a complex of physical and chemical methods (XPS, analytical electron microscopy, atomic-force microscopy, microhardness measurement (Vickers indentation method), and the method of acid-base indicators adsorption). According to XPS and SEM-EDX analysis pulse, energy impacts causes a contravention of the dielectric-minerals surface microstructure forming area electric discharge traces and microcracks, that results softening of rock forming minerals and reduces their microhardness overall by 40-66%. According to our experimental data, the nanosecond high-voltage pulse pretreatment of diamond ore may increase the preservation (safety) of diamond crystals due to the kimberlite rock-forming minerals softening and more rapid release of diamonds in grinding process, caused by the reduction of time, that kimberlites presence in the mill.

Keywords:

Characterization; Mineral; Processing; Rock;


Cite this article as:

Bunin I, Chanturiya V, Anashkina N, Ryazantseva M, Koporulina E. Experimental study of high-voltage nanosecond pulses effect on the structure surface and microhardness of kimberlite rock-forming minerals. In: Kongoli F, Kumar P, Senchenko A, Klein B, Silva A.C., Sun C, Mingan W, editors. Sustainable Industrial Processing Summit SIPS 2016 Volume 5: Starkey Intl. Symp. / Mineral Processing. Volume 5. Montreal(Canada): FLOGEN Star Outreach. 2016. p. 137-138.