Closing a tap hole using compressed gas

Details Closing a tap hole using compressed gas Closing a tap hole using compressed gas

F - Mech Eng,Light,Heat,Weapons

27

D

39/98

F27D 3/15 (2006.01) B22D 41/58 (2006.01) C21C 1/06 (2006.01) C21C 5/46 (2006.01)

Patent

CA 1061109

ABSTRACT OF THE DISCLOSURE It is known to close a tap hole in a metallurgical vessel for separating metal and slag. However such known procedures are expensive, difficult and not subject to repetitive usage. The present invention. seeks to overcome this drawback by providing in a method for closing a tap hole of a metallurgical vessel, for separating metal and slag, in particular when tapping steel melts, the improvement which comprises inserting a closure body into the tap hole in a manner leaving an annular gap between the closure body and the tap hole, and introducing compressed gas through a passage in the closure body into the tap hole after the metal has been poured off and counter to the pouring off direction of the metal so that air is sucked-in through the gap.

267086

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