Disclosed herein is a mixing apparatus for mixing solids and liquids comprising a mixing chamber defined within a plurality of sides radially arranged about a central axis, the mixing chamber comprising an eductor, the eductor comprising a first chamber inlet separated along the central axis from a chamber outlet by a frusta conical venturi throat arranged coaxial with a central axis; the eductor further comprising a second chamber inlet disposed through one or more of the plurality of sides and located between the first chamber inlet and the chamber outlet, the second chamber inlet having a plurality of second inlet opening diameters, each determined perpendicular to the central axis at the point at which the second chamber inlet intersects with an outer wall of the venturi throat, wherein the second inlet diameters are each less than the diameter of the venturi throat at each of the points at which the second chamber inlet intersects with the outer wall of the venturi throat. A method of mixing solids with a liquid is also disclosed.