Method for heating carbon blanks

In a method for manufacturing carbon bodies by heating blanks containing pyrolizable substances in a chamber oven which is heated from below 600.degree. C. to above 600.degree. C. and in which volatile pyrolysis products are formed and decomposed and thermal energy is generated by combustion of fluid fuel inside the chamber, the improvements comprising wherein below a chamber temperature of 600.degree. the fluid fuel is burned by supplying a stoichiometric amount of air, and above a chamber temperature of 600.degree. C. an additional quantity of air is introduced into the chamber, wherein part of the pyrolysis products condense and precipitate, and wherein above the chamber temperature of 600.degree. C., air is blown into the chamber in an amount sufficient to burn the precipitated pyrolysis products.