METHOD FOR OBTAINING COLLOIDS OF METALS Russian patent published in 2014 - IPC B22F9/14 B82Y40/00 

FIELD: metallurgy.

SUBSTANCE: at least one surface-active substance, at least one non-ionic reducing agent, inert gas in the form of bubbles with the size of 0.1-0.5 mm and particles of dispersed metal are added to liquid phase. Mesh electrodes, the ratio of lengths of which to distance between them is equal to 20÷200:1, are submerged into liquid phase and alternating current is passed between electrodes and metal parts at electrical voltage of 1.5-5.5 kV and frequency of 0.25-0.8 MHz. At the same time, mixing is performed by continuous circulation of liquid phases along a closed circuit including interelectrode space; after that, circulating liquid phase is treated with ultrasound with frequency of 10-20.

EFFECT: improving efficiency of a continuous process for obtaining colloids of metals owing to reducing a fraction of impurities in the colloid.

3 cl, 1 tbl