METHOD OF FLUSHING GOLD DUCT Russian patent published in 2005 - IPC

FIELD: concentration of minerals.

SUBSTANCE: proposed method includes disintegration of dust at simultaneous preparation of pulp and removal of foreign admixtures; operations are performed in scrubber-washing drum. Then pulp is admitted to pulp line in counter-flow; aeration of pulp is performed in pulp line by means of air bubbles of one size and duration of life no less than 1-2 minutes; proposed method includes also forming standing acoustic waves perpendicularly to pulp flow at frequency ω_ac corresponding to resonance frequency ω₀ of air bubbles of one size 1₀. Action of centrifugal and acoustic fields on pulp is performed in acoustic chamber at hydrostatic pressure of 4-5 atm. Acoustic field is formed in acoustic chamber by waves of final amplitude at frequency ω_ac corresponding to resonance frequency ω₀of air bubbles of one size 1₀ by means of acoustic radiators smoothly distributed over surface of acoustic chamber.

EFFECT: enhanced efficiency of entrapping fine gold.

7 dwg