Mixing of particulate materials

Abstract From the Canadian patent

A unit for mixing a powder onto a particulate material for example an inoculant onto seeds comprises a device which can be clamped around an auger tube and includes a liquid dispenser and a powder dispenser. The liquid dispenser communicates with an inlet into the auger tube spaced downwardly of the unit. A power hopper includes an opening for dispensing through a tube into the auger tube with the powder hopper being vibrated to feed the powder into the auger tube. The liquid acts as an adhesive agent coating the seeds so that the powder inoculant can be adhered to the seeds at a position downstream of the injection of the liquid at a point where the liquid is fully mixed.