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:
Jul. 05, 1983
Filed:
Aug. 18, 1981
Applicant:
Inventors:
Richard N Hill, Sr, Lakeland, FL (US);
Charles D Hill, Lakeland, FL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
423320 ; 423166 ; 423167 ; 423319 ; 252321 ;
Abstract
Foam generated during the digestion of phosphate rock is removed from the slurry either by overflow, mechanical sweeps, or by vacuum from strategically located nozzles connected to vacuum lines. The foam, after liquefaction, is returned to the filter where it results in improved filtration and return of soluble P.sub.2 O.sub.5.