Refractory system for bushing assembly
A fiber forming bushing assembly includes a frame and a bushing within the frame. One or more sections formed of a pre-cast refractory material are positioned between at least a lower sidewall of the bushing and the frame.
1 . A fiber forming bushing assembly comprising a frame, a bushing at least partially positioned within the frame, the bushing includes a bottom perforated plate, and having
one or more sections formed of a pre-cast refractory material at least partially positioned between the bushing and the frame.
2 . The fiber forming bushing assembly of claim 1 , wherein the sections of pre-cast refractory material comprise a high strength pre-cast material.
3 . The fiber forming bushing assembly of claim 1 , wherein the sections of pre-cast refractory material comprise a fired ceramic material.
4 . The fiber forming bushing assembly of claim 1 , further including a castable material positioned between the frame and the pre-cast refractory sections.
5 . The fiber forming bushing assembly of claim 1 , further including a castable material positioned between the bushing and the frame and on a top surface of the sections of pre-cast refractory material.
6 . The fiber forming bushing assembly of claim 1 , wherein at least one pre-cast refractory section has a lower inwardly extending ledge configured with a geometry that allows the pre-cast refractory section to at least partially hold the bushing.
7 . The fiber forming bushing assembly of claim 1 , wherein the bushing includes an outwardly extending projection, wherein the outwardly extending projection is configured with a geometry that at least partially holds the pre-cast refractory section adjacent to the bushing.
8 . The fiber forming bushing assembly of claim 1 , including an expansion material between the sections of pre-cast refractory material and the bushing.
9 . The fiber forming assembly of claim 1 , wherein the pre-cast refractory sections circumferentially extend around the bushing.
10 . The fiber forming assembly of claim 1 , further comprising a cooling coil mounted to the bushing, wherein one or more pre-cast refractory sections includes a recess configured to accept at least a portion of the cooling coil.
11 . A method of making a fiber forming bushing assembly comprising:
producing a bushing having a perforated bottom, the bushing being at least partially positioned in a frame, and
positioning one or more sections of a pre-cast refractory material between the bushing and the frame.
12 . The method of claim 11 , further including placing an expansion material adjacent to at least a portion of the bushing prior to positioning the pre-cast refractory material between the bushing and the frame.
13 . The method of claim 11 , further including placing a castable material adjacent to the pre-cast refractory material, and allowing the castable material to set.
14 . The method of claim 13 , including placing the castable material on a top surface of the pre-cast refractory material.
15 . The method of claim 13 , including placing the castable material between the pre-cast refractory material and the frame.
16 . A fiber forming bushing assembly comprising a frame and a bushing at least partially positioned within the frame, the bushing being defined at least in part by lower sidewalls and a perforated plate beneath the lower sidewalls, and having
one or more sections formed of a pre-cast refractory material positioned between the lower sidewalls and the frame, and
a castable material positioned between the frame and the pre-cast refractory sections.
17 . The fiber forming bushing assembly of claim 16 , wherein the castable material is positioned on a top surface of one or more of the pre-cast refractory sections.
18 . The fiber forming bushing assembly of claim 16 , wherein at least one pre-cast refractory section has a lower inwardly extending ledge configured with a geometry that allows the refractory section to at least partially hold the bushing.
19 . The fiber forming bushing assembly of claim 16 , wherein the bushing includes an outwardly extending projection that is secured to the lower sidewalls, wherein the outwardly extending projection is configured with a geometry that at least partially holds the pre-cast refractory section adjacent to the bushing
20 . The fiber forming bushing assembly of claim 16 , including an expansion material between the sections of pre-cast refractory material and the lower sidewalls.
21 . The fiber forming assembly of claim 16 , wherein the pre-cast refractory sections circumferentially extend around the lower sidewalls and around opposing end walls of the bushing.
22 . The fiber forming assembly of claim 16 , further comprising a cooling coil mounted to the bushing, wherein one or more of the pre-cast refractory sections includes a recess configured to accept at least a portion of the cooling coil.