Insulating refractory lining
AssigneeNorth American Refractories Co.
InventorsRonald L. Barrett, Paul C. Sheil
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Abstract
An insulating refractory lining for insulating the inner surface of a vessel defined by a metal shell. The refractory lining is comprised of a first refractory layer overlaying an inner surface of a metal shell. The first refractory layer is comprised of a cast refractory material and has a first side facing the metal shell and a second side facing away from the metal shell. A plurality of discrete, spaced-apart cavities are formed in the first side of the first refractory layer. The cavities define air pockets between the metal shell and the first refractory layer.
Claims28
An insulating refractory lining for insulating the inner surface of a vessel defined by a metal shell, said refractory lining comprised of:
- a first refractory layer overlaying an inner surface of a metal shell, said first refractory layer having a first side facing said metal shell and a second side facing away from said metal shell;
- and
- a plurality of discrete, spaced-apart cavities formed in said first side of said first refractory layer, said cavities defining air pockets between said metal shell and said first refractory layer.
An insulating refractory lining, comprised of:
- a first refractory layer having a first side and a second side;
- a second refractory layer disposed on said second side of said first refractory layer;
- and
- a plurality of discrete, spaced-apart cavities defined between said first refractory layer and said second refractory layer.
A method of forming discrete, spaced-apart air pockets in a refractory lining, comprising the steps of:
- applying a polymer sheet material onto a rigid surface, said sheet material having a plurality of discrete, spaced-apart air pockets formed on one side thereof wherein said air pockets are disposed on the side of said sheet that is facing away from said rigid surface;
- and
- forming a layer of a refractory material on said polymer sheet wherein said air pockets form cavities in the side of said refractory material facing said polymer sheet.
Dependencies are inferred from the claim text.