Apparatus and method for closing or opening an opening,...

Details Apparatus and method for closing or opening an opening,... Apparatus and method for closing or opening an opening,...

2008-06-06

2011-12-06

Kastler, Scott (Department: 1733)

Metallurgical apparatus

Means for treating ores or for extracting metals

By means applying heat to work, e.g., furnace

C222S185100, C220S263000

Reexamination Certificate

active

08071014

ABSTRACT:
An apparatus is provided for closing or opening an opening, especially a bottom opening of a material hopper arranged above the mouth of a blast furnace having a drivable flap plate, which is movable into an open position leaving the opening clear and into a closed position blocking off the opening and vice-versa. The flap plate carries out, in the region of the opening, a linear movement substantially perpendicular to the plane of the opening and, distal to the opening, a pivoting movement.

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