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US 4,091,544 AGranted
Drying process
AssigneeThe Procter & Gamble Company
InventorJames Peyton Hutchins
Life of this patent
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Abstract
A process for drying a water-wet mixture of materials, at least one of which is hydratable, which allows the mixture to be easily formed into the desired size and shape and easily and safely dried.
Claims7
A process for drying a mixture of materials comprising:
- A. forming a water-wet mixture of a hydratable material and a nonhydratable material at a temperature which is higher than the temperature of hydration of the hydratable material;
- B. forming the mixture of (A) into smaller units of the desired size and shape;
- C. decreasing the temperature of the units of (B) to a temperature which is at or below the hydration temperature of the hydratable material;
- and
- D. drying the units of (C) at a temperature high enough to remove the amount of free water and water of hydration which is desired but not high enough to cause the units to soften and stick together.
2 more elements
Dependencies are inferred from the claim text.