Apparatus for introducing dosed quantities of pulverulent materials into a pneumatic propulsion fluid

Abstract From the Canadian patent

A C T, "Apparatus for introducing dosed quantities of pulverulent materials into a pneumatic propulsion fluid " A device for introducing dosed quantities of pulverized solid materials into a carrier gas stream is presented. The device is particularly suitable for injecting solid materials into a vessel during metal refining. The device comprises a housing which defines a flow chamber in the axial direction for the flow of pressurized fluid or carrier gas. The housing also has a side aperture therethrough. The side aperture is connected to a container holding pulverized materials. Coaxial inner and outer sleeves at least one of which, is capable of rotation are located within the housing. …