| 摘要 |
FIELD: mining industry. SUBSTANCE: method relates to development of placer deposits by opencast operation in following succession of events. Deposit field is divided into sections. High-frequency oscillation generator is installed on initial section, then this section is watered and is subjected to high-frequency oscillations. Transmission of waves through ground mass makes particles of loose material oscillating and in result, ore and rock materials are separating. The section is dewatered, overburden material is removed together with upper layer of sand. Lower layer of sand containing ore minerals is extracted separately and delivered to benefication plant. Thus, successively section after section, placer deposit is worked out. EFFECT: high efficiency. 1 cl, 2 dwg |
