U type body in ST 37 or AISI 304 material up to requirement, Single shaft rotor is suitable to start - stop. Double helix coiled rotor. Rotor is beared from both sides, included imperviousness system. Pressure balance in mixer is stabilized by aeration pipe. Rotor is made by thick pipe. Pneumatic bottom and top gate, Rotor is driven by direct - coupled power transferring between motor and reducer is provided by belt pulley. Available locking system on bottom gate. Mixing time is 2,5-4 minutes. Mixing sensitivity 1 / 100.000. Driven by batching system.