METHOD FOR DETERMINATION OFFINELY DISSEMINATED GRAINS OF NOBLE METALS USING ULTRASOUND IMPACT Russian patent published in 2017 - IPC G01N33/20 G01N29/04 

FIELD: measuring equipment.

SUBSTANCE: in the implementation of method steps are carried out: fragmentation of the core material to a particle size -1+0.0 mm, the primary classification of material by grain size classes -1+0.5 mm, -0,5+0.2 mm, -0.2+0.0 mm, weighing of each grain size class, gravity concentration of each grain size class using a tray for washing samples with obtaining of primary placer material, primary view under the binocular with diagnosis of all minerals and sample of finely disseminated particles of noble metals, ultrasonic treatment for the grain size classes of the slurry of primary placer material with the ratio T:F1:3, by placing the slurry in the cylinder-shaped radiator, is carried out at a frequency of 22 kHz, medium sound intensity 15 W/cm², secondary classification of placer material of each grain size class and gravity concentration of each grain size class using a tray for washing samples with obtaining secondary placer material, weighing of each grain size class, secondary viewing under a binocular with diagnostics of all minerals for each grain size class, and sampling of chosen finely disseminated particles of free particles of noble metals, electron microscopic study of the composition of noble metal particles in the residue of secondary placer material.

EFFECT: increasing the efficiency of determining finely disseminated grains of noble metals by revealing finely disseminated inclusions in mineral clusters.

2 dwg