The stationary vertical mixer, with the aid of a tractor with a front loader, shovel or telescopic be filled with roughage, the components (e.g., chopped straw and silage maize). For this, however, we also have a maisvoorraadbak and stationary straw dispenser in our program. The required concentrates component (s) can be added with the aid of jacks, which are connected to the control unit computer or roughage, our MAISCOM. After a short mixing time, the completely homogeneous mixed airy final product, dosed via the associated electrically-driven conveyor belt or into the unloading auger feeder designed.