Material, apparatus, and method for refractory castings
Provided herein is a system, apparatus, and method for producing refractory products, and more particularly, to producing heated refractories, passive refractories, transition plates, moldable refractories, and accessories such as heated spouts, heated pins, thimbles, and dams. A heated refractory channel as disclosed herein may include a working surface to contain molten metal within the channel; a core adjacent to the working surface; one or more heating elements disposed within the core; and insulation, where the core is disposed between the working surface and the insulation. The one or more heating elements may be molded into the core. The heating elements may be electrical resistance heating elements.
1 . A method for producing a heated refractory component comprising:
casting a core of refractory material in a first mold, wherein the core produced by the first mold comprises a working surface and a back surface, wherein the core is cast with grooves defined within the back surface;
securing at least one heating element coil into the grooves defined within the back surface; and
encasing the at least one heating element coil within the grooves.
2 . The method of claim 1 , wherein encasing the at least one heating element coil within the grooves comprises casting a core backing around the core produced by the first mold within a second mold to form the heated refractory component, wherein the at least one heating element coil is embedded into the heated refractory component.
3 . The method of claim 2 , wherein the first mold comprises a silicone mold.
4 . The method of claim 2 , wherein the at least one heating element coil is embedded into the heated refractory component between the core and the core backing.
5 . The method of claim 1 , wherein the at least one heating element coil is pre-shaped.
6 . The method of claim 1 , wherein the heated refractory component comprises a trough, the trough comprising a working surface configured to convey molten metal flowing through the trough.
7 . The method of claim 6 , wherein the grooves defined within the back surface of the core extend along opposing sides of the trough and along a bottom of the trough.
8 . The method of claim 7 , wherein the at least one heating element coil is secured into the grooves defined within the back surface adjacent to the opposing sides and the bottom of the trough.
9 . The method of claim 1 , wherein the at least one heating element coil is powered by at least one electrical lead, wherein the at least one electrical lead is connected to the at least one heating element coil within the heated refractory component and exposed outside of the heated refractory component for connection to a power source.
10 . The method of claim 1 , wherein the at least one heating element coil is completely embedded within the heated refractory component.
11 . The method of claim 1 , wherein the at least one heating element coil is wound about the back surface and secured in place within the grooves defined within the back surface with studs extending within the first mold.