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:
Jan. 31, 1995
Filed:
Nov. 12, 1993
Applicant:
Inventor:
Bryan J Carlson, Johnson City, TN (US);
Assignee:
EcoTek, Inc., Erwin, TN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01G / ;
U.S. Cl.
CPC ...
423 11 ; 423122 ; 423-3 ;
Abstract
The process for recovering boron values and fluorine values from an acidic aqueous feed liquor containing substantial fluoroborate moieties, including contacting the feed liquor with basic material to adjust the pH thereof to above about 7.0 and provide a first clarified liquor containing the fluoroborate moieties, and contacting the first clarified liquor at elevated temperature with sufficient cation reactant selected from Al(OH).sub.3 or Al.sub.2 (SO.sub.4).sub.3 to precipitate substantially all of the fluorine values as an aluminum fluoride compound and provide a second clarified liquor containing the boron values as boric acid.