Abstract

The modification of structural chemical properties of natural fluorite, scheelite and calcite under the impact of high-power electromagnetic pulses (HPEMP–treatment) were studied with help of adsorption of acid-base indicators. It was determined that the HPEMP–treatment during of 30 seconds (3 x 103 pulses) resulted in the intensification of fluorite surface ‘electron-donating ability and acceptor properties of calcite and scheelite surfaces. Single mineral flotation tests has allowed to determine that treatment by high-power electromagnetic pulses resulted in the improvement of the calciferous minerals floatability. The rising of the scheelite recovery was 10 – 12%, for fluorite it was 5 – 6%, for calcite 7 – 8%.

Key words: Calcite; Fluorite; Scheelite; Floatability; High-power electromagnetic pulses

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