METHOD OF PRODUCTION OF OXYGENATED GRAPHITE AND A DEVICE FOR ITS REALIZATION Russian patent published in 2005 - IPC

FIELD: atomic industry; chemical industry; metallurgy; heat-and-power engineering; a method and a device for production of the oxygenated graphite.

SUBSTANCE: the invention presents a method of production of the oxygenated graphite and a device for its realization and may be used in atomic, a chemical industry, in metallurgy and heat power engineering at production of a flexible graphite foil, heat-insulating and fire-proof materials, sorbents. Graphite suspension is prepared in 30-98 % sulfuric acid or nitric acid. The ratio of the electroconductivities of the suspension and each acid exceeds 1. The suspension may additionally contain H₃PO_{orCH3COOH. The produced suspension is continuously or discretely is discharged through a branch pipe 3 in the reaction chambers 11 of the merry-go-round type reactor 1 with a cylindrical body 2, an annular anode 6 made in the form of a chute and cathodes 10 made the form of vanes. The anode 6 is mounted in the body 2 coaxially with it and is supplied with a jacket of chilling 7. Cathodes 10 are supplied with the separation casings and fixed to a bracket 9 fixed on the shaft 8 of the rotary drives. Anodic oxidizing of graphite conduct without compacting of the anode 6 in absence of the free electrolyte at a constant value of the electric current or at a constant potential of the anode with a message confirming that the current value in both cases is no less than 30 A·h/kg graphite. Cathodes 10 transfer the suspension by a chute of the anode 6. The formed compound of implantation is unloaded through a branch pipe 4, hydrolyzed, flushed, filtered and dried. The invention allows to increase productivity and to produce a foamed graphite after dilatation at 900°C with a high degree of homogeneity and bulk density of 1.1-3.4 g/dm³.}

EFFECT: the invention ensures increased productivity and production of the foamed graphite with a high degree homogeneity and good bulk density.

17 cl, 2 dwg, 3 tbl, 5 ex