Abstract: The invention relates to a compressed fuel composed of organic residues and/or raw materials having at least one additive for increasing the calorific value and for decreasing slag formation, which fuel consists of a fuel mixture which contains a) 72 to 83% by weight combustible organic residues and/or raw materials having a moisture of 8 to 20%, b) 15 to 25% by weight natural organic oils and/or fats for increasing the calorific value and c) 2 to 3% by weight sodium perborate for increasing the ash melting point and as oxygen supplier. As organic residues and/or raw materials, use is made of comminuted and naturally aged or artificially aged (by UV irradiation or by the addition of 0.1-0.

Abstract: A method is described for vacuum impregnation of particulate material in an impregnation installation (16, 16′) which has an impregnation chamber (54, 84) that can be placed under vacuum, an inlet orifice (64, 64′) for transferring the material into the impregnation chamber (54, 84) and an outlet orifice (82, 82′) for transferring the material out of the impregnation installation (16, 16′), with the following method steps