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:
Mar. 24, 1981
Filed:
Oct. 25, 1977
Roman Z Pyrih, Golden, CO (US);
Robert S Rickard, Golden, CO (US);
Orin F Carrington, Arvada, CO (US);
Earth Sciences, Inc., Golden, CO (US);
Abstract
An improvement in the process for the recovery of uranium from a phosphoric acid solution derived from the acidification of uraniferous phosphate ores including the steps of reducing the uranium in the phosphoric acid solution to the uranous form and contacting the resulting solution with a liquid-liquid solvent extraction agent which is a mixture of mono- and di-(alkyl-phenyl) esters of orthophosphoric acid dissolved in an inert organic diluent, to effect recovery of the uranium with the liquid-liquid solvent extraction agent, the improvement being maintaining the proper ratio of the mono and di-components of the liquid-liquid solvent extraction mixture which comprises removing dissolved and entrained uranium process organics from the raffinate resulting from said liquid-liquid solvent extraction step and recycling the removed organics to said liquid-liquid solvent extraction step.