Patent ID: 8298476

Claim:
A system for controlling emissions of gas and dust during transfer of a feed material from a transfer container to a feed bin of a furnace, comprising: a first duct section located in close proximity to a side wall of the transfer container, the first duct section comprising a first conduit and a lower dust collection fitting, the lower dust collection fitting having a lower intake port which is proximate to a bottom opening of the transfer container, and the first conduit having an interior in communication with the lower intake port, and having an open end located proximate to the lower end of the transfer container; a second duct section located in close proximity to the feed bin of the furnace, the second duct section comprising a second conduit having a inlet end with an inlet opening and an outlet end with an outlet opening; wherein the inlet end of the second conduit is adapted to be in close proximity to the open end of the first conduit when the transfer container is in position to discharge said hot feed material into the feed bin, and with the inlet opening of the second conduit in communication with the open end of the first conduit, thereby forming a continuous gas flow passage from the lower intake port of the first duct section to the outlet end of the second duct section; wherein the first duct section further comprises an upper dust collection fitting having an upper intake port located proximate to a top opening of the transfer container, said upper dust collection fitting comprising a hood which is pivotable between a first position in which the hood covers the top opening of the transfer container with the upper intake port in substantial alignment with the top opening, and a second position in which the hood is in a non-obstructing position relative to the top opening of the transfer container.