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Application filed by Маріупольський Металургійний Інститут, Мариупольский металлургический институтfiledCriticalМаріупольський Металургійний Інститут
Priority to UA4485320ApriorityCriticalpatent/UA8555A1/en
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A process comprises the treatment of dispersed iron-containing graphite by concentrated sulphuric acid with oxidizer, washing, drying and further thermal treatment for the expanding. With the purpose of decreasing of corrosiveness of reaction products and improvement of magnetic properties, the thermal treatment is carried out in a medium of a reducing gas.
UA4485320A1988-08-011988-08-01Process for iron-containing expanded graphite output
UA8555A1
(en)
Process for producing aryldiazonium salts from nitrogenous gases rich in nitrogen oxide, aqueous solutions of these salts and their use for the preparation of aminoazoaromatic compounds.