The present invention relates to a mixing-discharging hopper (300) comprising a bin (330) provided with a bottom wall (336), a member for emptying the hopper contents. According to the invention, the bin (330) is divided into two compartments by a dividing wall (Sp), the first compartment (C1) being intended for mixing loose material which the compartment can contain, and the second compartment (C2) being intended for emptying the hopper. The hopper includes a mixing and transfer member (400) arranged in the first compartment (C1), the emptying member (500) being arranged in the second compartment (C2). The lower portion of the dividing wall (Sp) is provided with a through-channel (Ps), allowing material to be transferred between the two compartments (C1 and C2), and a discharge port (361) extends through the second compartment (C2). The mixing and transfer member (400) comprises a helical element (Hce) which can rotate close to the bottom wall (336) and which, in one direction of rotation ("-") about the axis, mixes the material in the first compartment (C1) and which, in the other direction of rotation ("+") about the axis, transfers, in particular, the material into the second compartment (C2) through the aforementioned channel (Ps). The emptying member (500) comprising blades (Pt) designed to, in the second direction of rotation ("+") about the axis, discharge the material contained in the second compartment (C2) through the discharge port (361).La présente invention se rapporte à une trémie mélangeuse et distributrice (300) comprenant une benne (330) pourvue d'une paroi de fond (336), un organe de vidange du contenu de la trémie. Selon l'invention, la benne (330) est séparée, par l'intermédiaire d'une paroi de séparation (Sp), en deux compartiments, le premier compartiment (C1) étant destiné à mélanger de la matière en vrac qu'il est susceptible de contenir et le second compartiment (C2) étant destiné à vidanger la trémie, la trémie incluant un organe de mélang
