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:
Sep. 01, 1987
Filed:
Apr. 03, 1985
Applicant:
Inventor:
Douglas R Shaw, Arvada, CO (US);
Assignee:
Resource Technology Associates, Boulder, CO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B03D / ;
U.S. Cl.
CPC ...
209-5 ; 209 49 ; 209167 ; 210705 ; 210907 ;
Abstract
A process for separating and recovering non-metallic minerals, particularly phosphate, from an ore containing non-uniform sized particles, including colloidal particles. The ore is slurried in an alkaline, aqueous solution with a dispersing agent. A flotation collector is added, and the mixture is contacted with a hydrophobic, high molecular weight, nonionic polymer to flocculate the fine particles and make them amenable to subsequent flotation. A second embodiment provides a process for the recovery of an upgraded non-metallic ore from ore slimes, such as phosphate slimes, utilizing a high molecular weight, polyacrylamide, anionic flocculating agent.