Dust-free low pressure mixing system

A dust-free mixing system for use with drilling fluids, comprising:

• an eductor having an eductor housing with an axial bore for receiving a first suction induction port for receiving a first dry component, a second suction induction port for receiving a second dry component, and a third suction induction port for receiving a third component, wherein the first dry component, second dry component, and third component are mixed with a pressurized liquid flowing through the axial bore within a high-velocity, low pressure mixing region, creating an eductor discharge, wherein the eductor further comprises:
• a nozzle with a non-circular axisymmetrical lobe shaped orifice disposed within the axial bore forming both an axial flow path and a radial flow path wherein the high-velocity, low pressure mixing region is in communication with the nozzle;
• a parabolic inlet in communication with the high-velocity, low pressure mixing region and integrally connected to a cylindrical throat;
• a conical diffuser integrally connected to the cylindrical throat;
• and
• wherein the eductor discharge is a uniform mixed blend and is discharged from the conical diffuser with a pressure recovery of at least 50% of the pressurized liquid;
• a silo comprising a body with an inlet port, a discharge segment connected to the body, and a vent;
• a flow promoter connected to the discharge segment, wherein the flow promoter comprises a flow promoter body with a cavity core, an inlet end, an outlet end, and a central axis, wherein the cavity core extends from the inlet end to outlet end, the cavity core defining an outlet orifice at the outlet end, the inlet end comprising an inlet orifice and an inlet face, the cavity core and a plurality of lobes defining the inlet orifice and between the plurality of lobes are a plurality of inlet ridges a plurality of inlet slopes;
• recessed into a flange;
• a connecting conduit having a sight glass disposed between the flow promoter and the eductor for viewing fluid flow;
• a radial pre-mixer disposed on a first suction side of the eductor between a first dry component source and the eductor for generating a vortex to pre-wet the first dry component;
• a diverter manifold for flowing a portion of the pressurized liquid from the eductor to the radial pre-mixer;
• a cyclone separator attached to the vent of the silo and in communication with the third suction induction port of the eductor;
• a fluidizer disposed between the flow promoter and the second suction induction port of the eductor;
• wherein the fluidizer comprises:
• a concentric reducer comprising:
• an air supply port for receiving pressurized air and an interior concentric cavity;
• a flexible fluidizer insert, for removably fitting within the interior concentric cavity further comprising:
• a groove into an outer surface of the flexible fluidizer insert at an elevated position to the air supply port;
• and
• whereby the pressurized air flows to the groove and causes the flexible fluidizer insert to flutter, fluidizing the second dry component preventing clumping by the second dry component during mixing.