The Rivakka silo mill with concentrate dispenser makes prepared feed automatically. The hammer mill suctions and grinds the grain into the silo. The silo’s level guard drives the mill as needed. The concentrate dispenser feeds the desired amount of concentrate into the flour during the discharge stage. The control centre has a 24-hour timer which can be used to fill the silo, for example utilizing off-peak electricity. The mill can easily be attached to an automatic dry feeder or take prepared feed to a distribution cart.