CONCENTRATION OF NONFERROUS METAL ORES Russian patent published in 2014 - IPC B03B7/00 B03B1/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to concentration of minerals and can be used to increase the yield of valuable products, particularly, zinc and lead, by flotation. Proposed method comprises flotation, processing of pulp-bearing solution by pulse discharges and precipitation of solid phase. Processing of pulp-bearing solution is carried out by pulsed high-voltage discharges of specific energy of 8.6-11.2 kJ/dm³ fed directly into pipeline communicating flotation machine with settle-thickener. Action of pulsed high-voltage discharges is brought about provided that: R/R_o=10.4 where: R is the radius of efficient wave effects; R_o is the spacing between electrodes and R.

EFFECT: higher intensity and rate of deposition of disperse particles from foam after flotation.

2 cl, 3 dwg, 1 tbl