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US 9,781,776 B2Granted
Molten metal handling device heating system
AssigneePyrotek, Inc.
InventorsMark Vincent, Mark Palmer
Life of this patent
Estimating the term…
Abstract
Disclosed is a heating system for molten metal handling devices, examples of which are troughs, launders and other vessels. The heating system may include a refractory containment body, heater assembly, a containment shell and a thermal inducing interface between the heater assemblies and the containment shell and/or refractory body.
Claims19
A molten metal handling device, comprising:
- an outer casing with a bottom and two side walls generally defining an inner cavity;
- one or more heater assemblies within the outer casing, each heater assembly comprising:
- a heater assembly body with an inward facing surface, the inward facing surface including recesses;
- heater coils within the heater assembly body spaced apart from the inward facing surface of the heater assembly body;
- a castable refractory body defining a molten metal carrying cavity with a bottom wall, a first side wall and a second side wall, the castable refractory body abutting the one or more heater assemblies;
- and
- wherein thermal inducing cement is disposed within the recesses in the inward facing surface of the heater assembly body, facilitating conductive heat transfer from the heater coils through the thermal inducing cement to the refractory body.
4 more elements
A molten metal handling device, comprising:
- an outer casing with a bottom and two side walls generally defining an inner cavity;
- one or more heater assemblies within the outer casing, each heater assembly including a continuous inward facing surface and heater coils within the heater assembly body and adjacent the inward facing surface;
- a containment shell with a bottom and two side walls, the containment shell being within the inward facing surfaces of the one or more heating assemblies;
- a layer of thermal inducing cement sandwiched between the containment shell and the inward facing surfaces of the one or more heater assemblies;
- and
- a castable refractory body defining a molten metal carrying cavity with a bottom wall, a first side wall and a second side wall, the castable refractory body being within and abutting the containment shell.
3 more elements
A molten metal handling device, comprising:
- an outer casing defined by a bottom and two side walls generally defining an inner cavity;
- a castable refractory body defining a molten metal carrying cavity with a bottom wall, a first side wall and a second side wall;
- one or more heater assemblies, each heater assembly comprising:
- a heater assembly body with an interface surface abutting the two side walls of the containment shell, the heater assembly body having a heater assembly thermal expansion coefficient;
- a containment shell between the refractory body and the one or more heater assemblies, the containment shell having a containment shell thermal expansion coefficient;
- wherein the heater assembly thermal expansion coefficient is approximately the same as the containment shell thermal expansion coefficient, thereby reducing separation during thermal expansion and contraction.
3 more elements
Dependencies are inferred from the claim text.