EP 2556026 A1 20130213 - IMPROVED SYNTHETIC RUTILE PROCESS A
Title (en)
IMPROVED SYNTHETIC RUTILE PROCESS A
Title (de)
VERBESSERTES VERFAHREN A FÜR SYNTHETISCHES RUTIL
Title (fr)
PROCÉDÉ A PERFECTIONNÉ POUR LA PRODUCTION DE RUTILE SYNTHÉTIQUE
Publication
Application
Priority
- AU 2010901439 A 20100406
- AU 2011000390 W 20110406
Abstract (en)
[origin: WO2011123888A1] A process for recovering titanium as synthetic rutile from an ilmenite unsuited to the standard Becher process includes the steps of treating the ilmenite unsuited to the standard Becher process in a reducing atmosphere in the presence of a carbonaceous reductant whereby to convert the ilmenite to reduced ilmenite in which iron oxides in the ilmenite have been reduced to metallic iron, and separating out the metallic iron so as to obtain a synthetic rutile product. The treatment of the ilmenite is at an elevated temperature lower than that for which the TiO2 content of the synthetic rutile product is highest but at which there is substantially no reoxidation of the metallic iron. The carbonaceous reductant comprises coal selected for a gasification reactivity that results in an increased rate of reduction of iron oxides and titanium species effective to at least partly offset the lowered TiO2 content of the synthetic rutile product resulting from the lower elevated temperature, and to achieve a TiO2 content of 90% or greater in the synthetic rutile product.
IPC 8 full level
C01G 23/047 (2006.01)
CPC (source: EP US)
C01G 23/047 (2013.01 - EP US); C22B 5/10 (2013.01 - EP US); C22B 34/1209 (2013.01 - EP US)
Citation (search report)
See references of WO 2011123888A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2011123888 A1 20111013; AU 2011238419 A1 20121101; AU 2011238419 B2 20130328; CN 103201221 A 20130710; CN 103201221 B 20160803; EP 2556026 A1 20130213; US 2013022522 A1 20130124
DOCDB simple family (application)
AU 2011000390 W 20110406; AU 2011238419 A 20110406; CN 201180027805 A 20110406; EP 11764945 A 20110406; US 201113639565 A 20110406