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. 19, 1980
Filed:
Mar. 10, 1978
Applicant:
Inventors:
James E Lawver, Lakeland, FL (US);
Robert E Snow, Lakeland, FL (US);
Walter O McClintock, Bartow, FL (US);
Assignee:
International Minerals & Chemical Corporation, Northbrook, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B02C / ;
U.S. Cl.
CPC ...
241 20 ; 209 12 ; 209166 ;
Abstract
A method is disclosed for beneficiating a phosphate ore matrix containing apatite, siliceous gangue, and an alkaline earth metal carbonate mineral impuritywhich includes the steps of washing and sizing the ore, subjecting it to a gravity separation, a conventional 'double float' flotation, and a phosphate-carbonate flotation separation to provide a phosphate ore concentrate having a high BPL content and a relatively low concentration of alkaline earth metal carbonate mineral impurity.