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Vol 149
Pages:
160-163
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RUS

Study of kimberlite fracture by electric pulse method

Authors:
V. I. Kurets1
G. L. Lobanova2
E N. Tarakanovskii3
G. P. Filatov4
About authors
  • 1 — High Voltage Research Institute at Tomsk State Technical University
  • 2 — High Voltage Research Institute at Tomsk State Technical University
  • 3 — High Voltage Research Institute at Tomsk State Technical University
  • 4 — High Voltage Research Institute at Tomsk State Technical University
Date submitted:
2000-10-25
Date accepted:
2000-11-09
Date published:
2001-12-28

Abstract

Fracture by the electric pulse method occurs as a result of formation of the discharge channel until it touches the opposite electrode, release of capacitor battery energy with increasing temperature (up to 2·10 4 K) and pressure (up to 10 9 Pa), initiating the growth of main fracture cracks. Investigations of the fracture process and experimental verification were carried out on different types of ores and artificial materials and confirmed the effect of selectivity of the process, which distinguishes this method from the traditional ones. The rational area of application of the method (fine crushing of raw materials with the coarseness of 100-60 mm and above) and the nature of damage to crystals were established. The method provides preservation of diamonds, which testifies to the prospects of its application.

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References

  1. Семкин Б. В. Основы электроимпульсного разрушения материалов / Б.В.Семкин, В.И.Курец, А.Ф.Усов. Спб: Наука, 1995.
  2. Курец В.И. Влияние локальных неоднородностей на траекторию канала разряда при электроимпульсном разрушении материалов / В.И.Курец, В.В.Лопатин, М.Д.Носков // ФТПРПИ 2000. № 3.
  3. Финкелыитейн Г.А. Комплексная установка для дезинтеграции и выделения ограночного кристаллосырья из продуктивных пород / Г А. Финкелыитейн, О.Д.Шулояков, В.И.Курец // Обогащение руд. 1989. № 4.

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