Abstract: The present invention discloses a device for mixing a mixture material comprising at least two different phases where at least one first phase is in powdered form, said device comprising at least two separate inlets where a first inlet is intended for powder and a second inlet is intended for a second phase not being a powder, wherein the device further comprises an outlet and a mixing chamber with an agitator, wherein the mixing chamber comprises a mixing zone being that part of the mixing chamber in which the mixture material is being actively mechanically influenced to obtain mixing, and wherein said at least two separate inlets each involve any type of geometrical narrowing of their cross-sectional areas up to the mixing zone, and wherein the mixing zone further comprises any type of expansion of the cross-sectional area in a flow direction of the mixture material.