Indirect calcination method
AssigneeIndustrial Accessories Company
InventorMichael A. Jones
Life of this patent
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Abstract
Apparatus. methods. and systems for heat treatment of solid materials utilizing an indirect rotary calciner comprising one or more thermal expansion tolerant inner tubes fixed to an outer rotating shell. for example. by one or more resilient support members. The described methods of thermal treatment may be particularly utilized with cement and lime production processes and/or other heat treatment applications. such as pyrolysis.
Claims20
An indirect rotary calciner comprising:
- an elongated rotatable outer shell;
- and
- one or more inner tubes residing within the outer shell,
- the one or more inner tubes being affixed to the outer shell such that the one or more inner tubes rotate upon rotation of the outer shell.
The calciner of claim 6, wherein the insulated interior wall comprises a refractory liner.
An indirect rotary calciner comprising:
- an elongated rotatable outer shell comprising a first end and a second end and configured to calcine a solid material passing therethrough;
- one or more inner tubes residing within the outer shell configured to flow a heating fluid therethrough to heat the solid material passing through the outer shell;
- and
- one or more support members interconnecting the rotatable outer shell and the one or more inner tubes.
A method of thermally treating a solid material, the method comprising:
- providing an indirect rotary calciner comprising:
- an elongated rotatable outer shell, and
- one or more inner tubes residing within the outer shell affixed to the outer shell such that the one or more inner tubes rotate upon rotation of the outer shell;
- introducing a solid material into the indirect rotary calciner and producing a thermally treated material and a quantity of a volatilized substance;
- and
- recovering at least a portion of the quantity of the volatilized substance produced in the indirect rotary calciner.
Dependencies are inferred from the claim text.