Method for drying and processing raw food material
AssigneeGriffin Industries, Inc.
InventorsDennis B. Griffin, John L. Crowley
Life of this patent
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Abstract
A combined spray and rotary drying apparatus includes a spray dryer having a housing defining a spray drying chamber, an annular inlet and an outlet. A burner and atomizer sprayer are provided in the spray drying chamber. The outlet of the spray drying chamber feeds into a rotary drying drum. A raw material feed chute is also provided for feeding raw material of relatively low moisture content directly to the rotary dryer. Methods of drying a raw material and of processing raw animal parts are also disclosed.
Claims8
A method of drying raw material in a drying apparatus including a spray dryer section and a rotary drying section in fluid communication, said method comprising:
- maintaining an air stream running through said spray dryer section and downstream through said rotary drying section;
- spray drying said raw material having a first relatively high moisture content;
- conveying said spray dried raw material having a first relatively high moisture content in said air stream to said rotary drying section;
- and
- rotary drying said spray dried raw material having a first relatively high moisture content.
A method of processing raw animal parts, comprising:
- grinding said raw animal parts;
- heating said raw animal parts;
- separating said ground and heated raw animal parts into a meal, a water phase and an oil phase;
- spray drying said water phase;
- entraining said spray dried water phase in an air stream and delivering said spray dried water phase to a rotary dryer;
- adding said spray dried water phase to said meal in said rotary dryer and rotary drying said spray dried water phase and meal together;
- and
- collecting said mixed water phase and meal at a desired moisture content for further processing.
Dependencies are inferred from the claim text.