Zircon-rutile-ilmenite froth flotation process

Patent · Tue Apr 21 00:00:00 EDT 1992

OSTI ID:5024522

Schmidt, R; Denham, Jr, D L

This patent describes a method for separating a mixture of minerals comprising at least zircon, ilmenite and rutile. It comprises adding an acid solution to the mixture to acidify to a pH of between about 2.0 and 6.0; adding starch to the mixture to depress the ilmenite and the rutile; adding a source of fluoride ions to the mixture to provide a negative surface charge on the zircon surface to activate the zircon; adding an amine cationic collector to the mixture to float the activated zircon; subjecting the mixture containing the added acid solution, the fluoride ions, the starch and the cationic collector, to froth flotation; and withdrawing a float product comprising the zircon and a sink product comprising the ilmenite and rutile.

• Assignee: Sierra Rutile Ltd., Santa Rosa, CA (United States)
• Patent Number(s): US 5106489; A
• Application Number: PPN: US 7-742604
• OSTI ID: 5024522
• Resource Relation: Patent File Date: 8 Aug 1991
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
36 MATERIALS SCIENCE
ILMENITE
SEPARATION PROCESSES
RUTILE
ZIRCON
ACIDIFICATION
CHEMICAL COMPOSITION
FLOTATION
MINERALS
PH VALUE
MATERIALS
OXIDE MINERALS
RADIOACTIVE MATERIALS
RADIOACTIVE MINERALS
SILICATE MINERALS
400105* - Separation Procedures
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies