Abstract: An apparatus and method for creating a fine-grained fuel from solid or paste-like raw energy materials by torrefaction. The apparatus including an impact reactor having a rotor and impact elements which is temperature resistant up to 350 degrees Celsius, a feed device for hot circulation gas in the lower region of the impact reactor, a feed device for solid or paste-like raw energy materials in the head region of the impact reactor. The apparatus further including at least one withdrawal device for a gas flow having comminuted and torrefacted raw energy particles and a separation and withdrawal device for crushed and torrefacted raw energy particles from the gas flow taken out of the impact reactor.