The invention disclosed a system for mixing a liquid material and a solid material, said system comprising: (i) a base unit, for the liquid material and the solid material; (ii) a liquid material supply; (iii) a solid material supply; (iv) a liquid/solid mixing output; (v) an injection unit connected to the liquid material supply and to the solid material supply and the injection unit injecting said liquid material and said solid material in the base unit; (vi) a separation and extraction unit separating and extracting simultaneously from the base unit surplus of gas coming from the mixing ofthe liquid material and the solid material.