CA2377261A1 - Processing titaniferous ore to titanium dioxide pigment - Google Patents
Processing titaniferous ore to titanium dioxide pigment Download PDFInfo
- Publication number
- CA2377261A1 CA2377261A1 CA002377261A CA2377261A CA2377261A1 CA 2377261 A1 CA2377261 A1 CA 2377261A1 CA 002377261 A CA002377261 A CA 002377261A CA 2377261 A CA2377261 A CA 2377261A CA 2377261 A1 CA2377261 A1 CA 2377261A1
- Authority
- CA
- Canada
- Prior art keywords
- ions
- leachate
- titanium dioxide
- ferrous
- raffinate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract 40
- 239000000049 pigment Substances 0.000 title claims abstract 6
- 239000004408 titanium dioxide Substances 0.000 title claims 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract 12
- 239000010936 titanium Substances 0.000 claims abstract 11
- 229910052719 titanium Inorganic materials 0.000 claims abstract 11
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims abstract 10
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 claims abstract 10
- 229910001447 ferric ion Inorganic materials 0.000 claims abstract 8
- 229910001448 ferrous ion Inorganic materials 0.000 claims abstract 8
- 230000007062 hydrolysis Effects 0.000 claims abstract 8
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract 8
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 claims abstract 8
- -1 titanium ions Chemical class 0.000 claims abstract 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract 5
- 239000007921 spray Substances 0.000 claims abstract 5
- 239000013078 crystal Substances 0.000 claims abstract 4
- 150000001805 chlorine compounds Chemical class 0.000 claims abstract 3
- 238000009854 hydrometallurgy Methods 0.000 claims abstract 3
- 238000002386 leaching Methods 0.000 claims abstract 3
- 238000007254 oxidation reaction Methods 0.000 claims abstract 3
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 claims abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims 24
- 229960002089 ferrous chloride Drugs 0.000 claims 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 4
- 150000001412 amines Chemical class 0.000 claims 4
- 239000012535 impurity Substances 0.000 claims 4
- 239000000203 mixture Substances 0.000 claims 4
- 239000007787 solid Substances 0.000 claims 4
- 238000001354 calcination Methods 0.000 claims 3
- 238000003801 milling Methods 0.000 claims 3
- 239000012074 organic phase Substances 0.000 claims 3
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims 2
- 239000002253 acid Substances 0.000 claims 2
- 125000004432 carbon atom Chemical group C* 0.000 claims 2
- 230000003301 hydrolyzing effect Effects 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims 2
- 230000003647 oxidation Effects 0.000 claims 2
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 claims 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims 1
- PPDZLUVUQQGIOJ-UHFFFAOYSA-N 1-dihexylphosphorylhexane Chemical compound CCCCCCP(=O)(CCCCCC)CCCCCC PPDZLUVUQQGIOJ-UHFFFAOYSA-N 0.000 claims 1
- RKXBYSUETPOUCS-UHFFFAOYSA-N C(CCCCCCC)[PH2]=O Chemical compound C(CCCCCCC)[PH2]=O RKXBYSUETPOUCS-UHFFFAOYSA-N 0.000 claims 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims 1
- 125000003277 amino group Chemical group 0.000 claims 1
- 239000000460 chlorine Substances 0.000 claims 1
- 229910052801 chlorine Inorganic materials 0.000 claims 1
- 238000001816 cooling Methods 0.000 claims 1
- 125000004122 cyclic group Chemical group 0.000 claims 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims 1
- 239000003456 ion exchange resin Substances 0.000 claims 1
- 229920003303 ion-exchange polymer Polymers 0.000 claims 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
- 150000002903 organophosphorus compounds Chemical class 0.000 claims 1
- 239000007800 oxidant agent Substances 0.000 claims 1
- 230000008929 regeneration Effects 0.000 claims 1
- 238000011069 regeneration method Methods 0.000 claims 1
- 229920006395 saturated elastomer Polymers 0.000 claims 1
- 229930195734 saturated hydrocarbon Natural products 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 125000001302 tertiary amino group Chemical group 0.000 claims 1
- 229930195735 unsaturated hydrocarbon Natural products 0.000 claims 1
- 238000000638 solvent extraction Methods 0.000 abstract 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 2
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 abstract 2
- 229910021577 Iron(II) chloride Inorganic materials 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 230000001172 regenerating effect Effects 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/04—Oxides; Hydroxides
- C01G23/047—Titanium dioxide
- C01G23/053—Producing by wet processes, e.g. hydrolysing titanium salts
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/04—Oxides; Hydroxides
- C01G23/047—Titanium dioxide
- C01G23/053—Producing by wet processes, e.g. hydrolysing titanium salts
- C01G23/0536—Producing by wet processes, e.g. hydrolysing titanium salts by hydrolysing chloride-containing salts
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/36—Compounds of titanium
- C09C1/3607—Titanium dioxide
- C09C1/3615—Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
- C09C1/363—Drying, calcination
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/30—Particle morphology extending in three dimensions
- C01P2004/32—Spheres
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/30—Particle morphology extending in three dimensions
- C01P2004/32—Spheres
- C01P2004/34—Spheres hollow
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
- C01P2004/82—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases
- C01P2004/84—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases one phase coated with the other
- C01P2004/86—Thin layer coatings, i.e. the coating thickness being less than 0.1 time the particle radius
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Nanotechnology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Composite Materials (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
A hydrometallurgical process is provided for producing pigment grade TiO2 from titaniferous mineral ores, and in particular from ilmenite ore. The ore is leached with a hydrochloric acid, preferably a recycled solution at high hydrochloric acid concentration, to form a leachate containing titanium and iron chloride and a residue. The leachate may be filtered to separate the leachate from the residue. The leachate is cooled to a temperature sufficient to form crystals of FeCl2, which are separated from the leachate. The leachate may be subjected to a reduction step to reduce Fe+3 to Fe+2, before crystallizing. The leachate is subjected to a first solvent extraction to form a pregnant strip solution containing titanium and ferric ions and a raffinate containing ferrous ions.
This strip solution is subjected to a second solvent extraction to form a second strip solution containing ferric ions and a raffinate containing titanium ions. The first strip solution may be subjected to an oxidization step before the second solvent extraction. The second raffinate containing titanium ions is hydrolyzed. The hydrolysis can be by water addition or spray hydrolysis. Iron chloride is converted to iron oxide and hydrochloric acid. All product streams containing chlorides are recycled, producing gaseous hydrochloric acid that is used for regenerating the leaching solution.
This strip solution is subjected to a second solvent extraction to form a second strip solution containing ferric ions and a raffinate containing titanium ions. The first strip solution may be subjected to an oxidization step before the second solvent extraction. The second raffinate containing titanium ions is hydrolyzed. The hydrolysis can be by water addition or spray hydrolysis. Iron chloride is converted to iron oxide and hydrochloric acid. All product streams containing chlorides are recycled, producing gaseous hydrochloric acid that is used for regenerating the leaching solution.
Claims (26)
1. A hydrometallurgical process for producing pigment-grade titanium dioxide from a titaniferous ore comprising:
a. leaching the ore with recycled solution of high hydrochloric acid concentration to provide a leachate containing titanium chloride, ferrous chloride, ferric chloride, and other impurity chlorides and a residue consisting of undissolved solids;
b. separating the leachate from the undissolved solids;
c. reducing ferric ions present in the leachate to the ferrous state d. cooling the leachate to a temperature sufficient to form crystals of ferrous chloride;
e. separating the crystals of ferrous chloride from the leachate to provide a solution containing titanium ions, ferric ions, and ferrous ions;
f. contacting the solution with a water-immiscible organic phase containing an organophosphorus extractant to form a first raffinate containing ferrous ions and other impurities and to form a first pregnant strip solution containing titanium and ferric ions and a minor amount of ferrous ions;
g. contacting the first pregnant strip solution with a water-immiscible organic phase containing an amine extractant to form a second pregnant strip solution containing ferric ions and to form a second raffinate containing titanium ions;
and h. hydrolyzing the second raffinate.
a. leaching the ore with recycled solution of high hydrochloric acid concentration to provide a leachate containing titanium chloride, ferrous chloride, ferric chloride, and other impurity chlorides and a residue consisting of undissolved solids;
b. separating the leachate from the undissolved solids;
c. reducing ferric ions present in the leachate to the ferrous state d. cooling the leachate to a temperature sufficient to form crystals of ferrous chloride;
e. separating the crystals of ferrous chloride from the leachate to provide a solution containing titanium ions, ferric ions, and ferrous ions;
f. contacting the solution with a water-immiscible organic phase containing an organophosphorus extractant to form a first raffinate containing ferrous ions and other impurities and to form a first pregnant strip solution containing titanium and ferric ions and a minor amount of ferrous ions;
g. contacting the first pregnant strip solution with a water-immiscible organic phase containing an amine extractant to form a second pregnant strip solution containing ferric ions and to form a second raffinate containing titanium ions;
and h. hydrolyzing the second raffinate.
2. The process of claim 1 wherein the second raffinate contains less than about mg/l iron.
3. The process of claim 3 wherein the reduction step includes the addition of elemental iron.
4. The process of claim 1 wherein the reduction step c takes place before the residue separation step b.
5. The process of claim 1 wherein the separated ferrous chloride crystals are subjected to pyrohydrolysis to regenerate HCI.
6. The process of claim 1 wherein the first raffinate is enriched in chloride ions by using gaseous hydrochloric acid from an acid regeneration plant.
7. The process of claim 1 wherein the first pregnant strip solution is subjected to an oxidation step before contacting with the water-immiscible amine extractant.
8. The process of claim 7 wherein the oxidation is achieved by adding an effective amount of chlorine or other suitable oxidizing agent to convert all remaining ferrous iron to ferric iron.
9. The process of claim 1 wherein the second pregnant strip solution is subjected to pyrohydrolysis to regenerate HCI.
10. The process of claim 1 wherein the hydrolysis is conducted by adding water to form titanium dioxide pigment.
11. The process of claim 10 wherein the titanium dioxide pigment is in the rutile form.
12. The process of claim 10 wherein the titanium dioxide pigment is in the anatase form.
13. The process of claim 10 wherein the titanium dioxide pigment is a mixture of TiO2 in the rutile and the anatase form.
14. The process of claim 1 wherein the titanium hydrolysis is conducted by spray hydrolysis of the second raffinate.
15. The process of claim 11 further including the step of calcining and milling after spray hydrolysis to form titanium dioxide.
16. The process of claim 12 further including the step of calcining and milling after spray hydrolysis to form titanium dioxide.
17. The process of claim 13 further including the step of calcining and milling after spray hydrolysis to form titanium dioxide.
18. The process of claim 15 wherein the titanium dioxide is in the rutile form.
19. The process of claim 16 wherein the titanium dioxide is in the anatase form.
20. The process of claim 17 wherein the titanium dioxide is a mixture of TiO2 in the rutile and the anatase form.
21. The process of claim 1 wherein the organophosphorus extractant is selected from one or more organophosphorus compounds having the formula R1R2R3PO
wherein R1, R2, and R3 may be the same or different and are each a hydrogen atom, a substituted or unsubstituted linear or branched chain, a cyclic, saturated, or unsaturated hydrocarbon radical, with the proviso that the sum of the carbon atoms of the radicals R1, R2, and R3 is equal to at least 12 carbon atoms.
wherein R1, R2, and R3 may be the same or different and are each a hydrogen atom, a substituted or unsubstituted linear or branched chain, a cyclic, saturated, or unsaturated hydrocarbon radical, with the proviso that the sum of the carbon atoms of the radicals R1, R2, and R3 is equal to at least 12 carbon atoms.
22. The process of claim 21 wherein the organophosphorus extractant is a mixture of tri(n-hexyl) phosphine oxide and tri(n-octyl phosphine oxide).
23. The process of claim 1 wherein the amine extractant is selected from the group consisting of primary, secondary, tertiary, quaternary amines, and mixtures thereof.
24. The process of claim 23 wherein the amine extractant is a tertiary amine.
25. The process of claim 1 wherein the titaniferous ore is ilmenite.
26. A hydrometallurgical process for producing pigment-grade titanium dioxide from a titaniferous ore comprising:
a. leaching the ore with high acid concentration to provide a leachate containing titanium chloride, ferrous chloride, ferric chloride, and other impurity chlorides and a residue consisting of undissolved solids;
b. separating the leachate from the undissolved solids;
c. forming ferrous chloride in the leachate and separating the ferrous chloride from the leachate to provide a solution containing titanium ions, ferric ions, and ferrous ions;
d. contacting the solution with a water-immiscible organic phase containing an organophosphorus extractant to form a first raffinate containing ferrous ions and other impurities and to form a first pregnant strip solution containing titanium and ferric ions and a minor amount of ferrous ions;
e. contacting the first pregnant strip solution with an ion exchange resin to form a second raffinate containing titanium ions; and f. hydrolyzing the second raffinate.
a. leaching the ore with high acid concentration to provide a leachate containing titanium chloride, ferrous chloride, ferric chloride, and other impurity chlorides and a residue consisting of undissolved solids;
b. separating the leachate from the undissolved solids;
c. forming ferrous chloride in the leachate and separating the ferrous chloride from the leachate to provide a solution containing titanium ions, ferric ions, and ferrous ions;
d. contacting the solution with a water-immiscible organic phase containing an organophosphorus extractant to form a first raffinate containing ferrous ions and other impurities and to form a first pregnant strip solution containing titanium and ferric ions and a minor amount of ferrous ions;
e. contacting the first pregnant strip solution with an ion exchange resin to form a second raffinate containing titanium ions; and f. hydrolyzing the second raffinate.
Applications Claiming Priority (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14105799P | 1999-06-24 | 1999-06-24 | |
| US14111499P | 1999-06-24 | 1999-06-24 | |
| US60/141,114 | 1999-06-24 | ||
| US60/141,057 | 1999-06-24 | ||
| US14770299P | 1999-08-06 | 1999-08-06 | |
| US60/147,702 | 1999-08-06 | ||
| US09/500,207 | 2000-02-07 | ||
| US09/500,207 US6375923B1 (en) | 1999-06-24 | 2000-02-07 | Processing titaniferous ore to titanium dioxide pigment |
| PCT/US2000/016363 WO2001000531A1 (en) | 1999-06-24 | 2000-06-14 | Processing titaniferous ore to titanium dioxide pigment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2377261A1 true CA2377261A1 (en) | 2001-01-04 |
| CA2377261C CA2377261C (en) | 2010-03-30 |
Family
ID=27495452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2377261A Expired - Lifetime CA2377261C (en) | 1999-06-24 | 2000-06-14 | Processing titaniferous ore to titanium dioxide pigment |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6375923B1 (en) |
| EP (1) | EP1194379B1 (en) |
| AU (1) | AU770209B2 (en) |
| CA (1) | CA2377261C (en) |
| DE (1) | DE60010702T2 (en) |
| WO (1) | WO2001000531A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9945009B2 (en) | 2011-03-18 | 2018-04-17 | Orbite Technologies Inc. | Processes for recovering rare earth elements from aluminum-bearing materials |
| US10174402B2 (en) | 2011-09-16 | 2019-01-08 | Orbite Technologies Inc. | Processes for preparing alumina and various other products |
Families Citing this family (64)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6500396B1 (en) * | 1998-11-17 | 2002-12-31 | Vaikuntam Iyer Lakshmanan | Separation of titanium halides from aqueous solutions |
| US6713038B2 (en) * | 2000-04-18 | 2004-03-30 | Millenium Inorganic Chemicals, Inc. | TiO2 compounds obtained from a high silica content ore |
| US6974566B2 (en) | 2000-09-05 | 2005-12-13 | Altair Nanomaterials Inc. | Method for producing mixed metal oxides and metal oxide compounds |
| ATE290431T1 (en) | 2000-10-17 | 2005-03-15 | Altair Nanomaterials Inc | METHOD FOR PRODUCING CATALYST STRUCTURES |
| DE60202373T2 (en) * | 2001-07-20 | 2005-12-08 | Altair Nanomaterials Inc., Reno | PROCESS FOR THE PREPARATION OF LITHIUM TITANATE |
| EP1282180A1 (en) * | 2001-07-31 | 2003-02-05 | Xoliox SA | Process for producing Li4Ti5O12 and electrode materials |
| US6982073B2 (en) | 2001-11-02 | 2006-01-03 | Altair Nanomaterials Inc. | Process for making nano-sized stabilized zirconia |
| US6919029B2 (en) * | 2002-02-14 | 2005-07-19 | Trustees Of Stevens Institute Of Technology | Methods of preparing a surface-activated titanium oxide product and of using same in water treatment processes |
| US7473369B2 (en) * | 2002-02-14 | 2009-01-06 | The Trustees Of The Stevens Institute Of Technology | Methods of preparing a surface-activated titanium oxide product and of using same in water treatment processes |
| EP1483206B1 (en) * | 2002-03-08 | 2010-10-20 | Altair Nanomaterials Inc. | Process for making nano-sized and sub-micron-sized lithium-transition metal oxides |
| AU2002952155A0 (en) * | 2002-10-18 | 2002-10-31 | Bhp Billiton Innovation Pty Ltd | Production of titania |
| AU2002952157A0 (en) * | 2002-10-18 | 2002-10-31 | Bhp Billiton Innovation Pty Ltd | Production of titania |
| AU2002952158A0 (en) * | 2002-10-18 | 2002-10-31 | Bhp Billiton Innovation Pty Ltd | Production of titania |
| US7037482B2 (en) * | 2003-03-10 | 2006-05-02 | Teck Cominco Metals Ltd. | Solvent extraction of a halide from a aqueous sulphate solution |
| CN1761765A (en) * | 2003-11-19 | 2006-04-19 | 方法研究奥特克公司 | Process for the recovery of titanium in mixed chloride media |
| US7482304B2 (en) | 2003-12-10 | 2009-01-27 | Altair Nanomaterials Inc. | Method for producing structures |
| EP1768651A4 (en) * | 2004-07-13 | 2008-09-10 | Altairnano Inc | Ceramic structures for prevention of drug diversion |
| DE102005022076A1 (en) * | 2005-02-25 | 2006-09-07 | Heubach Gmbh | Pastel white, doped rutile pigment, useful e.g. in polymers, building materials and paints, has reduced photoactivity and specific particle size distribution, prepared from crude or synthetic rutile |
| RU2007141195A (en) * | 2005-04-07 | 2009-05-20 | БиЭйчПи БИЛЛИТОН ИННОВЕЙШН ПТИ ЛТД (AU) | USE OF TITANIUM DEPOSITION METHOD |
| WO2006105611A1 (en) * | 2005-04-07 | 2006-10-12 | Bhp Billition Innovation Pty Ltd | Titanium intermediate processing |
| CN101194033A (en) * | 2005-04-07 | 2008-06-04 | Bhp比利顿创新公司 | Titanium intermediate processing |
| TW200642961A (en) * | 2005-04-07 | 2006-12-16 | Bhp Billiton Innovation Pty | Improved metal extraction |
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- 2000-06-14 WO PCT/US2000/016363 patent/WO2001000531A1/en active IP Right Grant
- 2000-06-14 CA CA2377261A patent/CA2377261C/en not_active Expired - Lifetime
- 2000-06-14 DE DE60010702T patent/DE60010702T2/en not_active Expired - Lifetime
- 2000-06-14 EP EP00939873A patent/EP1194379B1/en not_active Expired - Lifetime
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| US9945009B2 (en) | 2011-03-18 | 2018-04-17 | Orbite Technologies Inc. | Processes for recovering rare earth elements from aluminum-bearing materials |
| US10174402B2 (en) | 2011-09-16 | 2019-01-08 | Orbite Technologies Inc. | Processes for preparing alumina and various other products |
Also Published As
| Publication number | Publication date |
|---|---|
| AU770209B2 (en) | 2004-02-19 |
| DE60010702D1 (en) | 2004-06-17 |
| US6375923B1 (en) | 2002-04-23 |
| CA2377261C (en) | 2010-03-30 |
| EP1194379A1 (en) | 2002-04-10 |
| EP1194379B1 (en) | 2004-05-12 |
| WO2001000531A1 (en) | 2001-01-04 |
| DE60010702T2 (en) | 2005-05-19 |
| AU5488700A (en) | 2001-01-31 |
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