A method for heating a concentrate in an installation for spray drying, • in which, at a low pressure level, a low-pressure heating of the concentrate from a flow temperature to a spraying temperature required for a pressurized spraying of the concentrate, is performed and • in which a pressure increasing of the concentrate to a high pressure level subsequently takes place, which can reach up to a maximum of 350 bar, characterized by the sequence of the following steps (a) to (c): (a) additional high-pressure heating of the concentrate at the high pressure level to an elevated spraying temperature, which lies in the range of 75 to 80 °C, by means of an additional high-pressure heat exchanger, which is supplied on the secondary side with a heat-transfer medium and which is designed as a shell-and-tube heat exchanger having a plurality of inner tubes, through which the concentrate flows in parallel and which are arranged in the shape of a circular ring and on a single circle and which together form an inner channel, which is designed to adjoin the inner tubes in the shape of a circumferential annular space in the flow direction, (b) defined shear loading of the concentrate in the course of or immediately after the treatment according to step (a) with means that exist in a channel having the shape of an annular space, which is connected on one side with the outlet of the circumferential annular space and on the other side with a second high-pressure line section and which has a defined extension length and a defined length-dependent progression of its channel passage cross-sections, and (c) subsequent immediate transferring of the concentrate treated according to step (b) to the location of its pressurized spraying, wherein a transfer time (Δt) for the immediate transfer (Ü) is determined by a minimum possible fluidic effective distance between the means for performing the step (b) and the location of the pressurized spraying. • in which, at a low pressure level, a low-pressure heating of the concentrate from a flow temperature to a spraying temperature required for a pressurized spraying of the concentrate, is performed and • in which a pressure increasing of the concentrate to a high pressure level subsequently takes place, which can reach up to a maximum of 350 bar, (a) additional high-pressure heating of the concentrate at the high pressure level to an elevated spraying temperature, which lies in the range of 75 to 80 °C, by means of an additional high-pressure heat exchanger, which is supplied on the secondary side with a heat-transfer medium and which is designed as a shell-and-tube heat exchanger having a plurality of inner tubes, through which the concentrate flows in parallel and which are arranged in the shape of a circular ring and on a single circle and which together form an inner channel, which is designed to adjoin the inner tubes in the shape of a circumferential annular space in the flow direction, (b) defined shear loading of the concentrate in the course of or immediately after the treatment according to step (a) with means that exist in a channel having the shape of an annular space, which is connected on one side with the outlet of the circumferential annular space and on the other side with a second high-pressure line section and which has a defined extension length and a defined length-dependent progression of its channel passage cross-sections, and (c) subsequent immediate transferring of the concentrate treated according to step (b) to the location of its pressurized spraying, wherein a transfer time (Δt) for the immediate transfer (Ü) is determined by a minimum possible fluidic effective distance between the means for performing the step (b) and the location of the pressurized spraying.