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:
Nov. 27, 1979
Filed:
Feb. 16, 1978
Applicant:
Inventor:
Jean-Jacques Predali, Elancourt, FR;
Assignee:
Minemet Recherche, Trappes, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B02C / ; B02C / ;
U.S. Cl.
CPC ...
299-7 ; 241 24 ; 299 17 ;
Abstract
The invention provides a process for the preconcentration of metalliferous values contained in metal-bearing ore materials (ores and byproducts thereof) and involves subjecting the ore material to careful attrition to obtain a particle mixture of fine and coarse particles, separating the fine particles from the coarse particles by granulometry, and recovering from the thus-separated fine particles a cut having a particle size not exceeding about 50 microns and containing the metalliferous values in concentrated form.