METHOD OF PRODUCTION OF NANOSIZED PARTICLES OF THE MINERAL SHUNGITE Russian patent published in 2012 - IPC B02C17/00 B82B3/00 

FIELD: milling technologies.

SUBSTANCE: invention relates to the technology of the mineral shungite milling to the effect of receiving of nanosized particles used as an active filler in production of elastomeric compounds; the mineral shungite is taken as a basic sample with the size of microparticles of 0÷100 micron, grinding is executed in the planetary ball mill loading into the grinding bowl the basic components in the proportion from 1.5:1:1.5 to 2.5:1:3 by volume: basic shungite - branched spirit - milling balls with the diameter 0.5÷5 mm; the milling processes is performed with adding of the branched spirits with the number of the carbon atoms not more than eight, at that the (OH) group is located not at the outmost carbon atom; the temperature of the basic mixture does not exceed 150°C and the milling process is executed in the grinding bowl located on the planetary disc of the planetary ball mill at the speed of 100÷700 revolutions per minute reversing rotation every 5÷10 minutes within up to 6 hours of the nonstop milling process; the grinding bowl is revolving about its axis but in the opposite direction relatively the rotation of the planetary disc securing the multiple increase of the milling energy and smaller particles sizes thereby; after milling the shungite to the size of particles within the limits of 5÷50 nm the substance is dried in the drying box during 0.5÷6 hours at the temperature of about 80÷250°C and thereafter the milled mineral is packaged into airtight containers.

EFFECT: application of this method allows to provide the elastomeric compounds incorporating shungite as the active component with high mechanical and operation characteristics.

5 cl, 3 dwg, 2 tbl