Canadian Patents Database

Patent Summary

(12) Patent:	(11) CA 1258181
(21) Application Number:	477505
(54) English Title:	PROCESS FOR PRODUCING ENRICHED MINERAL ORE CONCENTRATES
(54) French Title:	PRODUCTION DE CONCENTRES DE MINERAIS ENRICHIS

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English Abstract

Note: The Abstract is shown in the official language in which it was submitted.

ABSTRACT



A process for selectively enriching a sulfide
mineral ore concentrate containing desired metal sulfides and
mixed metal sulfides containing the desired metal and other
metal or other metal sulfides, the other metal having a lower
affinity for sulfur than the desired metal to produce an
enriched concentrate having an increased desired metal content;
the process comprising:
(a) reacting a desired metal ion rich aqueous
stream with the sulfide mineral ore concentrate in a
reaction zone to produce a product aqueous slurry
containing increased quantities of desired metal
sulfides;
(b) separating the product aqueous slurry into a
desired metal ion depleted aqueous stream and a
finely divided particulate solids stream containing
the desired metal sulfides; and,
(c) separating at least a portion of the desired
metal sulfides from the finely divided particulate
solids stream by a froth flotation process to
produce the enriched concentrate.

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Patent Details

(52) Canadian Patent Classification (CPC):	361/3 53/368
(51) International Patent Classification (IPC):	C22B 3/00 (2006.01)
(72) Inventors (Country):	KREBS, BARBARA A. (United States of America) YUILL, WILLIAM A. (United States of America) WILLSON, DONALD B. (United States of America) ARMSTRONG, RAYNOR O. (United States of America)
(73) Owners (Country):	ATLANTIC RICHFIELD COMPANY (United States of America)
(71) Applicants (Country):
(74) Agent:	OSLER, HOSKIN & HARCOURT LLP
(45) Issued:	1989-08-08
(22) Filed Date:	1985-03-26
(30) Availability of licence:	N/A
(30) Language of filing:	English

Patent Cooperation Treaty (PCT):	No

(30) Application Priority Data:
Application No. Country Date 676,355 United States of America 1984-11-29

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View Patent Image	Download Patent Image in PDF Format	Size of Image (KB)	Number of Pages
Cover Page	Cover Page	16	1
Abstract	Abstract	25	1
Claims	Claims	268	8
Description	Description	1,150	30
Drawings	Drawings	102	5
Representative Drawing	Representative Drawing	N/A	N/A