Effectiveness analysis of ultra high frequency treatment of pyrite-bearing ore

This article describes the study into effectiveness of ultra high frequency (UHF) exposure of metal-bearing ore for its softening. The review of the domestic and foreign research on this topic is implemented: the reasons of high interest in development and application of energy-efficient technologies are explained; the basic notions, potential and relevancy of UHF energy application in mineral processing are revealed; the retrospective data on the amount of annual research in the field of UHF effects on rocks are presented; the main achievements and science gaps are described. The patterns of change in the UHF treatment effectiveness as function of percentage and size of pyrite grains are experimentally found as a case-study of quartz–pyrite ore samples. In particular, it is determined that the content of pyrite has a higher influence on the UHF treatment efficiency than the coarseness of pyrite grains, and the rate of temperature growth is higher and the “temperature stabilization” period arrives earlier in the samples with the higher pyrite content. Furthermore, beyond the zone of “temperature stabilization” in the samples with the higher content of pyrite, the temperature grows more intensively, which may imply a sharp rise in the density of the crystal lattice in such samples in their further heating.

Keywords: processing, pyrite-bearing ore, UHF treatment effectiveness, stabilization temperature, structural changes, ore softening, rock relaxation, energy efficiency.
For citation:

Vinnikov V. A., Zemlianskii G. S. Effectiveness analysis of ultra high frequency treatment of pyrite-bearing ore. MIAB. Mining Inf. Anal. Bull. 2024;(4):22-32. [In Russ]. DOI: 10.25018/0236_1493_2024_4_0_22.

Issue number: 4
Year: 2024
Page number: 22-32
ISBN: 0236-1493
UDK: 622.02; 622.023
DOI: 10.25018/0236_1493_2024_4_0_22
Article receipt date: 18.01.2024
Date of review receipt: 20.02.2024
Date of the editorial board′s decision on the article′s publishing: 10.03.2024
About authors:

V.A. Vinnikov1, Dr. Sci. (Phys. Mathem.), Head of Chair, e-mail: evgeny.vinnikov@gmail.com,
G.S. Zemlianskii1, Graduate Student, e-mail: zemlianskygrigory@yandex.ru, ORCID ID: 0009-0008-5642-6509,
1 University of Science and Technology MISIS, 119049, Moscow, Russia.


For contacts:

G.S. Zemlianskii, e-mail: zemlianskygrigory@yandex.ru.


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