METHOD FOR PRODUCTION OF OXIDIZED GRAPHITE Russian patent published in 1996 - IPC

FIELD: production of plastic carbon materials. SUBSTANCE: method for production of oxidized graphite includes introduction of hydrogen peroxide at pressure of up to 1 MPa to under the layer of sulfuric acid in ratio of 1:(6-20) mas. part., respectively; vigorous mixing and continuous cooling by air bubbling to form homogeneous mass; introduction of graphite during air bubbling in ratio of 1:(2-3) mas. part., relative to sulfuric acid; holding for 10-20 min; feed for filtration and washing with water. Oxidized graphite is homogeneous product which ensures production of expanded graphite with low bulk density. No harmful effluents are detected in the process. EFFECT: higher efficiency. 2 cl