Process and device for the metered introduction of fine-grain solid substances into an industrial furnace, in particular a blast furnace or cupola furnace

Abstract From the Canadian patent

A process and apparatus for the metered introduction of fine-grain materials, particularly pulverulent solid substances (i.e. coal dust) from a pressurized metering container which contains a supply of solid material, into an industrial furnace having a plurality of feed locations such as a blast furnace or cupola furnace is presented. The solid material is fed to the individual feed locations in a carrier gas stream through a conveying duct, the gas stream being highly charged with the solid material. The carrier gas is fed to the lower end section of the metering container in a flow which causes a local loosening in the lower section of the supply of solid material with the conveying …