METHOD OF PREPARING POROUS CARBON FOR PREPARATION OF HEMO- AND ENTEROSORBENT Russian patent published in 2006 - IPC B01J20/20 C01B31/08 

FIELD: carbon materials and medicine-destination sorbents.

SUBSTANCE: mobile granulated carbon black bed having specific surface 35-80 m²/g id heated to 700-900°C and then subjected to pyrolytic compaction accomplished by feeding gaseous and vaporous hydrocarbons into carbon black bed and two-step deposition of pyrolytic carbon layer on carbon black particles. Carbon black is first compacted to achieve loose density of granules 0.45-0.65 g/cm³ followed by isolation of granule fraction 0.50-1.20 mm in diameter, after which moving material bed is activated with water steam at bed temperature 800-900°C to achieve total pore volume in product 0.3-0.5 cm³/g.

EFFECT: achieved size uniformity of granules and reduced content of dust inside pores and on the surface of granules.

3 cl, 2 ex