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Application filed by Мариупольский металлургический институтfiledCriticalМариупольский металлургический институт
Priority to SU4485320/26ApriorityCriticalpatent/SU1633743A1/en
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FIELD: technology of carbon-graphite materials. SUBSTANCE: dispersed graphite- containing wastes with iron content of 10-60 mas. are treated with concentrated sulfuric acid with oxidizer (KCrO), washed, dried and subjected to heat treatment for expansion in medium of reducing gas (CH,, COor H) at 500-1100 C. EFFECT: reduced corrosivity of reaction products (gas atmosphere and expanded graphite) and improved magnetic properties. 3 cl, 2 tbl
SU4485320/26A1988-08-011988-08-01Method for production of iron-containing expanded graphite
SU1633743A1
(en)