Nozzle guard for blast furnace mudgun
AssigneeProtective Technologies, Inc.
InventorWilliam F. Given
Life of this patent
Estimating the term…
Abstract
A nozzle guard device (50, 50') has a generally C-shaped half-shell configuration for shielding a lower and otherwise exposed portion of a blast furnace mudgun nozzle (22) from damaging contact with molten metal and slag during taphole closure operations. Mounting elements (86, 86') are provided for extension into an opening (26) of the nozzle (22) for embedding a refractory clay material contained within the opening (26) for securing the nozzle guard device (50, 50') in position on the nozzle (22).
Claims24
A protective nozzle guard device (50, 50') for attachment to a nozzle (22) of a blast furnace clay gun (16) used for selectively closing a taphole (12) of a blast furnace (10) to stop outflow of molten metal and slag therethrough by inserting a nose (32) of the nozzle (22) into the taphole (12) and injecting clay material (C) into the taphole (12) through a nozzle opening (26) in an endface (24) of the nozzle (22), said nozzle guard device (50, 50') comprising:
- a face guard member (52) having a back surface (56) an opposite front surface (58) and an outer peripheral surface (60);
- and mounting means (84, 84') projecting beyond said back surface (56) and spaced inwardly from said outer peripheral surface (60) of said face guard member (52) so as to be insertable into the nozzle opening (26) for engaging the clay material contained within the nozzle opening (26) in response to inserting said mounting means (84, 84') into said nozzle opening (26) to thereby mount and retain said face guard member (54) in overlying shielding relation with the end face (24) of the nozzle (22).
A protective nozzle guard device (50, 50') for attachment to a nozzle (22) of a blast furnace clay gun (16) used for selectively closing a taphole (12) of a blast furnace (10) to stop outflow of molten metal and slag therethrough by inserting a nose (42) of the nozzle (22) into the taphole (12) and injecting clay material (C) into the taphole (12) through an opening (26) in an endface of the nozzle, said nozzle guard device (50, 50') comprising:
- a face guard member (52) extending arcuately between opposite spaced ends (72, 74) in a generally C-shaped configuration;
- and including mounting means (84, 84') for self-mounting and retaining said face guard member (52) on a bottom portion of the nozzle (22) with said ends projecting upwardly in response to moving said face guard member (52) toward engagement with the nozzle endface (24) to shield a lower and otherwise exposed portion of the nozzle endface (24) from contact with the molten metal and slag during taphole closing operations.
A protective nozzle guard device (50, 50') for attachment to a nozzle (22) of a blast furnace clay gun (16) having an endface (24) and a nozzle opening (26), said nozzle guard device comprising:
- a face guard member (52) fabricated of combustible material, said face guard member (52) having a front surface (58), an opposite back surface (56), and an outer peripheral surface (62);
- and
- at least one self-attaching mounting member (84, 84') projecting from said back surface (56) and spaced inwardly from said outer peripheral surface (62) so as to enable said mounting member (84, 84') to be inserted into the nozzle opening (26) to thereby position and retain said face guard member (52) in overlying shielding relation with the nozzle endface (24).
Dependencies are inferred from the claim text.