EP 0658214 A1 19950621 - UPGRADING TITANIFEROUS MATERIALS.
Title (en)
UPGRADING TITANIFEROUS MATERIALS.
Title (de)
AUFBEREITUNG TITANHALTIGER MATERIALIEN.
Title (fr)
AMELIORATION DE MATERIAUX TITANIFERES.
Publication
Application
Priority
- AU 9300414 W 19930812
- AU PL410592 A 19920814
- AU PL719393 A 19930210
Abstract (en)
[origin: US2002104406A1] The application discloses a process for upgrading a titaniferous material by removal of impurities contained in the material especially radionuclides. The process involves heating the titaniferous material to a temperature of less than 1300° C. to form a solid titaniferous phase and a liquid oxide or glassy phase in the presence of a material that promotes the formations of such phases, cooling the product at a rate that maintains the glassy phase in an amorphous state and leaching the solidified material with an acid or an alkali to remove the impurities. Materials that promote the formation of the desired phases include compounds of alkali metals and boron. Examples include borax, caustic soda, soda ash and silica.
IPC 1-7
IPC 8 full level
C22B 1/02 (2006.01); C22B 1/243 (2006.01); C22B 3/10 (2006.01); C22B 34/12 (2006.01)
CPC (source: EP US)
C22B 1/02 (2013.01 - EP US); C22B 1/243 (2013.01 - EP US); C22B 3/10 (2013.01 - EP US); C22B 34/1204 (2013.01 - EP US); C22B 34/1209 (2013.01 - EP US); C22B 34/1213 (2013.01 - EP US); Y02P 10/20 (2015.11 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC
DOCDB simple family (publication)
US 2002104406 A1 20020808; CN 1043154 C 19990428; CN 1084223 A 19940323; EP 0658214 A1 19950621; EP 0658214 A4 19960703; IN 190922 B 20030906; JP H08500393 A 19960116; MY 109520 A 19970228; US 2003129113 A1 20030710; WO 9404709 A1 19940303
DOCDB simple family (application)
US 81909501 A 20010426; AU 9300414 W 19930812; CN 93116218 A 19930814; EP 93917451 A 19930812; IN 462CA1993 A 19930813; JP 50567494 A 19930812; MY PI19931605 A 19930813; US 34528603 A 20030116