US20050225014A1 - Filter extraction mechanism - Google Patents
Filter extraction mechanism Download PDFInfo
- Publication number
- US20050225014A1 US20050225014A1 US10/692,096 US69209603A US2005225014A1 US 20050225014 A1 US20050225014 A1 US 20050225014A1 US 69209603 A US69209603 A US 69209603A US 2005225014 A1 US2005225014 A1 US 2005225014A1
- Authority
- US
- United States
- Prior art keywords
- vessel
- housing
- transfer mechanism
- screw
- slurry
- 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.)
- Abandoned
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 43
- 238000000605 extraction Methods 0.000 title 1
- 239000002002 slurry Substances 0.000 claims abstract description 49
- 239000007787 solid Substances 0.000 claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 238000004891 communication Methods 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 13
- 230000001681 protective effect Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 14
- 230000000750 progressive effect Effects 0.000 claims description 8
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 229910001338 liquidmetal Inorganic materials 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 3
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- -1 halide salt Chemical class 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 claims 1
- 239000002923 metal particle Substances 0.000 claims 1
- 239000011734 sodium Substances 0.000 description 8
- 238000000926 separation method Methods 0.000 description 7
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229910052708 sodium Inorganic materials 0.000 description 4
- 229910001069 Ti alloy Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 229910003074 TiCl4 Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002110 ceramic alloy Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/22—Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
- B30B9/12—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
- B30B9/121—Screw constructions
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/10—Obtaining titanium, zirconium or hafnium
- C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
- C22B34/1263—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining metallic titanium from titanium compounds, e.g. by reduction
- C22B34/1268—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining metallic titanium from titanium compounds, e.g. by reduction using alkali or alkaline-earth metals or amalgams
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
-
- 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
Definitions
- This invention relates to the Armstrong process as described in U.S. Pat. Nos. 5,779,761, 5,958,106 and 6,409,797, the disclosures of each of which is incorporated herein by reference.
- a slurry consisting of excess reductant metal, salt particles produced and elemental material or alloy particles or powder produced.
- This slurry is thereafter treated by a variety of methods. However, all of the methods have in common the separation of excess liquid metal from the slurry and thereafter separating the remaining liquid metal and the produced salt from the desired product which is the elemental material or alloy.
- liquid sodium is used as a reductant for titanium tetrachloride to produce titanium powder.
- Yet another object of the present invention is to provide a transfer mechanism of the type set forth for the Armstrong Process in order to transfer slurry from an inerted vessel or container to a vacuum or inerted chamber for further processing wherein a plug established in the transfer mechanism isolating the vessels or containers.
- Yet another object of the present invention is to provide a transfer mechanism between a first vessel containing a slurry of liquid and solids and a second vessel with at least one of the first and second vessels being under a protective atmosphere and/or vacuum, comprising a housing in communication with the first and the second vessels, a screw having at least one helical thread along a longitudinal shank within the housing for transferring material from the first vessel to the second vessel, the screw and the housing cooperating to compress the slurry, whereby slurry entering the housing from the first vessel has the solids therein concentrated as the slurry is transported by the screw toward the second vessel while liquid is expressed from the slurry as the solids are concentrated until the concentrated solids form a plug isolating the second vessel from the first vessel while solids discharge into the second vessel.
- a further object of the invention is to provide a transfer mechanism between a first vessel containing a slurry of liquid alkali or alkaline earth metal or mixtures thereof and metal or alloy or ceramic particles and halide salt particles and a second vessel with at least one of the first and second vessels having a protective atmosphere and/or vacuum therein, comprising a housing in communication with the first and the second vessels, a screw having at least one helical thread along a longitudinal shank within the housing for transferring material from the first vessel to the second vessel, the screw and the housing cooperating to increase the concentration of solids in the slurry between the first and the second vessels until the concentrated particles form a plug isolating the second vessel and the protective atmosphere or vacuum therein from the first vessel and the protective atmosphere or vacuum therein while solids discharge into the second vessel.
- a final object of the present invention is to provide a method of concentrating and transferring a slurry of a liquid and solids from one container to another while isolating the environments within the containers from each other, comprising providing communication between the containers, transporting slurry from one container toward another container while expressing liquid from the slurry thereby increasing the solids concentration thereof until a plug is formed between two containers isolating same while solids from the plug are transferred to the another container.
- FIG. 1 is a schematic illustration showing the two vessels and an embodiment of the transfer mechanism therebetween;
- FIG. 2 is a schematic illustration of an alternate embodiment of the present invention.
- FIG. 3 is a schematic illustration of yet another embodiment of the present invention.
- FIG. 4 is a schematic illustration of a further embodiment of the present invention.
- a transfer mechanism 10 which includes a double walled conduit including an outer conduit wall 11 having a liquid outlet 12 and end walls 13 , the wall 11 being preferably but not necessarily cylindrical. Interior of the cylindrical wall 11 is an inner tube or conduit 15 having a portion 16 which is solid and a portion 17 which is apertured and may be a mesh of any suitable size.
- the inner tube or conduit 15 may either be cylindrical as illustrated in FIG. 1 or conical as will be explained, the inner conduit 15 has a discharge end 18 thereof which opens into a vacuum chamber 25 and has an inlet end 19 thereof which opens into a container or vessel 20 in communication with the reactor as illustrated in the Armstrong patents previously referenced and incorporated herein.
- a feed screw 30 is positioned within the inner conduit 15 and includes a rotatable shank 31 having a helical thread 32 positioned on the shank 31 as is well known in the art.
- the thread 32 may have a constant or a variable pitch.
- the pitch is the distance between adjacent threads and the variable pitch may preferably be a progressive pitch in which the pitch decreases from the vessel 20 toward the container or vessel 25 , for a purpose hereinafter described.
- the transfer mechanism 10 is used in conjunction with a material made by the Armstrong Process. More particularly, for purposes of illustration only, the slurry discussed herein will be a combination of liquid sodium, sodium chloride particles and particles of titanium and/or a titanium alloy. As set forth in the Armstrong patents, a variety of metal and non-metal products may be made thereby and it is intended that the present invention not be limited to any particular product made by the Armstrong Process and certainly not limited to the preferred product described herein.
- the vessel or container 20 preferably operated under an inert atmosphere or under vacuum has therein a slurry of the particles previously described and as the slurry enters the portion 19 of the inner conduit or tube 15 and the feed screw 30 is rotated as illustrated in the drawings by rotation of the shank 31 , the slurry is moved along the feed screw from left to right as illustrated in FIG. 1 . Because of the progressive pitch of the feed screw 30 in FIG. 1 , that is the threads 32 thereof are closer together so that the pitch decreases from left to right, the solid material is concentrated as it is moved from the container or vessel 20 to the container or vessel 25 .
- the portion 17 of the conduit or tube 15 is apertured or porous, liquid sodium drains therethrough and passes out of the outlet 12 for further processing. Therefore, the slurry as it is transported from container or vessel 20 to container or vessel 25 becomes more concentrated as liquid is drained therefrom and the density increases as the pitch between the adjacent threads diminishes.
- the formation of a seal by the transfer mechanism 10 is a critical aspect of the present invention because separation of liquid sodium and salt from the desired particles of the ceramic or metal alloy, as described in the Armstrong patents may include distillation in a vacuum chamber or a vessel 25 or removal of the liquid metal by vaporization with a hot inert sweep gas and the Armstrong reactor itself may be an inerted vessel such as with argon. Accordingly, it is important for a seal or plug to be formed between the two containers or vessels in order to permit continuous operation between the two vessels without the necessity of shutting down one of the vessels during transfer or destroying the protective atmosphere in the vessel 20 or the vacuum or protective atmosphere in vessel 25 .
- the transfer mechanism 10 A has a housing 15 A conical in shape and the screw 30 therein may or may not be a progressive pitch screw.
- the screw threads in the embodiment illustrated in FIG. 2 may not need to be closer together, that is the pitch need not be diminished in order to reduce the volume of the material between adjacent threads and the housing wall as the material is moved from left to right or from vessel 20 A to vessel 25 A.
- FIG. 3 there is shown another embodiment of the present invention in which the shank 31 B of the screw 30 B is conical in shape with the larger end of the cone being adjacent the vessel 25 B and with the pitch between adjacent threads 32 B being constant or diminishing. In either case, the volume of the area between adjacent threads and the inner container 15 B diminishes as the material is moved from the vessel 20 B to the vessel 25 B.
- FIG. 4 there is shown a further embodiment 10 C of the present invention in which a cylinder 15 C interconnects vessels 20 C and 25 C and transports slurry while concentrating same between the two vessels.
- Slurry entering the inlet 19 C of the cylinder 15 C is concentrated upon rotation of screw 30 C due to movement of the helical thread 32 C upon rotation of the shaft 31 C.
- the outlet end 18 C of cylinder 15 C is an apertured plate having an effective diameter smaller than the inlet 19 C thereby restricting flow of the slurry causing in cooperation with the screw 30 C and housing or cylinder 15 C the solids in the slurry to concentrate while liquid is expressed from the slurry and is separated therefrom through outlet or drain 12 C.
- a plug is formed which isolates, as hereinbefore explained, vessel 20 from vessel 25 , thereby permitting the continuous production of slurry in vessel 20 , or a vessel or container in communication therewith, and continuous separation of solids, even if wet with liquid, by the transfer mechanism 10 C in vessel 25 or a vessel in communication therewith for further treatment in the same or different environment as vessel 20 .
- separation of Na and/or NaCl from Ti or Ti alloy powder in vessel 25 may be accomplished by distillation and/or by a hot inert sweep gas followed by passivation and/or washing the water.
- a hot inert sweep gas followed by passivation and/or washing the water.
- liquid Na may be present at about 60% by weight of the slurry leaving vessel 20
- the wet solids discharged into vessel 25 may have Na present only in the range of from about 20 to about 50% by weight.
- the invention includes movement and concentration of material from one container to another without compromising the environment of either container.
- the containers may be connected pipes or vessels, and the environments may be vacuums, inerted atmospheres or otherwise.
- concentration of solids in a slurry to transport solids from one environment to another while forming a seal or plug therebetween so as to isolate the environments from each other.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacture And Refinement Of Metals (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/692,096 US20050225014A1 (en) | 2002-09-07 | 2003-10-22 | Filter extraction mechanism |
| PCT/US2004/033823 WO2005042792A1 (fr) | 2003-10-22 | 2004-10-14 | Mecanisme d'extraction de filtre |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US40891902P | 2002-09-07 | 2002-09-07 | |
| PCT/US2003/027647 WO2004022798A1 (fr) | 2002-09-07 | 2003-09-03 | Dispositif a vis utilise pour transferer de la boue reactionnelle contenant du ti dans une enceinte sous vide |
| US10/692,096 US20050225014A1 (en) | 2002-09-07 | 2003-10-22 | Filter extraction mechanism |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US2003/027647 Continuation-In-Part WO2004022798A1 (fr) | 2002-09-07 | 2003-09-03 | Dispositif a vis utilise pour transferer de la boue reactionnelle contenant du ti dans une enceinte sous vide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20050225014A1 true US20050225014A1 (en) | 2005-10-13 |
Family
ID=34549892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/692,096 Abandoned US20050225014A1 (en) | 2002-09-07 | 2003-10-22 | Filter extraction mechanism |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20050225014A1 (fr) |
| WO (1) | WO2005042792A1 (fr) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7621977B2 (en) | 2001-10-09 | 2009-11-24 | Cristal Us, Inc. | System and method of producing metals and alloys |
| US7632333B2 (en) | 2002-09-07 | 2009-12-15 | Cristal Us, Inc. | Process for separating TI from a TI slurry |
| US7753989B2 (en) | 2006-12-22 | 2010-07-13 | Cristal Us, Inc. | Direct passivation of metal powder |
| US8821611B2 (en) | 2005-10-06 | 2014-09-02 | Cristal Metals Inc. | Titanium boride |
| US8894738B2 (en) | 2005-07-21 | 2014-11-25 | Cristal Metals Inc. | Titanium alloy |
| US9127333B2 (en) | 2007-04-25 | 2015-09-08 | Lance Jacobsen | Liquid injection of VCL4 into superheated TiCL4 for the production of Ti-V alloy powder |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7897050B2 (en) * | 2007-04-12 | 2011-03-01 | Accudyne Systems, Inc. | Dense gas means for extraction of a solute from solids |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3919087A (en) * | 1972-07-25 | 1975-11-11 | Secondary Processing Systems | Continuous pressure filtering and/or screening apparatus for the separation of liquids and solids |
| US5160428A (en) * | 1989-07-24 | 1992-11-03 | Kuri Chemical Engineers, Inc. | Continuous filter press |
| US6309570B1 (en) * | 1998-01-14 | 2001-10-30 | American Equipment Systems | Vacuum extrusion system for production of cement-based articles |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3836302A (en) * | 1972-03-31 | 1974-09-17 | Corning Glass Works | Face plate ring assembly for an extrusion die |
| JPS60255300A (ja) * | 1984-05-31 | 1985-12-16 | Yamato Sangyo Kk | スクリユ−プレス型汚泥脱水機 |
| JPS63207612A (ja) * | 1987-02-24 | 1988-08-29 | 日本碍子株式会社 | セラミツク押出法及びそれに用いる装置 |
| US5958106A (en) * | 1994-08-01 | 1999-09-28 | International Titanium Powder, L.L.C. | Method of making metals and other elements from the halide vapor of the metal |
| JPH1190692A (ja) * | 1997-06-24 | 1999-04-06 | Chiyoda Corp | スクリュープレス |
| CN1681950A (zh) * | 2002-09-07 | 2005-10-12 | 国际钛金属粉末公司 | 用于将含钛反应浆料转移到真空容器中的螺杆装置 |
-
2003
- 2003-10-22 US US10/692,096 patent/US20050225014A1/en not_active Abandoned
-
2004
- 2004-10-14 WO PCT/US2004/033823 patent/WO2005042792A1/fr not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3919087A (en) * | 1972-07-25 | 1975-11-11 | Secondary Processing Systems | Continuous pressure filtering and/or screening apparatus for the separation of liquids and solids |
| US5160428A (en) * | 1989-07-24 | 1992-11-03 | Kuri Chemical Engineers, Inc. | Continuous filter press |
| US6309570B1 (en) * | 1998-01-14 | 2001-10-30 | American Equipment Systems | Vacuum extrusion system for production of cement-based articles |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7621977B2 (en) | 2001-10-09 | 2009-11-24 | Cristal Us, Inc. | System and method of producing metals and alloys |
| US7632333B2 (en) | 2002-09-07 | 2009-12-15 | Cristal Us, Inc. | Process for separating TI from a TI slurry |
| US8894738B2 (en) | 2005-07-21 | 2014-11-25 | Cristal Metals Inc. | Titanium alloy |
| US9630251B2 (en) | 2005-07-21 | 2017-04-25 | Cristal Metals Inc. | Titanium alloy |
| US8821611B2 (en) | 2005-10-06 | 2014-09-02 | Cristal Metals Inc. | Titanium boride |
| US7753989B2 (en) | 2006-12-22 | 2010-07-13 | Cristal Us, Inc. | Direct passivation of metal powder |
| US9127333B2 (en) | 2007-04-25 | 2015-09-08 | Lance Jacobsen | Liquid injection of VCL4 into superheated TiCL4 for the production of Ti-V alloy powder |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2005042792A1 (fr) | 2005-05-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |
|
| AS | Assignment |
Owner name: CRISTAL US, INC., MARYLAND Free format text: MERGER;ASSIGNOR:INTERNATIONAL TITANIUM POWDER, L.L.C.;REEL/FRAME:021853/0269 Effective date: 20081016 |