The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 11, 1992
Filed:
Mar. 06, 1991
William P Moore, Hopewell, VA (US);
Harmony Products, Inc., Chesapeake, VA (US);
Abstract
A stepwise method of recovering high integrity particulate feed supplement fats free of live pathogens and malodors from abatoir sludge containing substantial fat components in a vacuum evaporating granulator. The method comprises: primary comminuting aqueous abatoir sludge with strong base until a fluid suspension of finely divided particles is formed; evaporatively heating the suspension until the dry matter amounts to more than 70 percent and the strong base has reacted with the fat component and coagulated the fluid suspension to form soft homogeneous solid agglomerates; secondary comminuting the agglomerates with high speed blades until particles are formed with diameters smaller than 5 millimeters; and setting the particles by heating under vacuum until the particles harden, exhibit no malodors, and are free of live pathogens. A chemical agent such as phosphoric acid or uncondensed urea-formaldehyde concentrate may be additively reacted with the abatoir sludge to ameliorate odors and pathogens. A fat source suitable for inclusion in the feed rations for ruminants and monogastric animals is provided by the instant method. Mixtures of abatoir sludges or abatoir sludge admixed with animal feeds may be used in the method.