WO2005028145A2 - Method, apparatus and system for segregating salt from metal powder - Google Patents
Method, apparatus and system for segregating salt from metal powder Download PDFInfo
- Publication number
- WO2005028145A2 WO2005028145A2 PCT/US2004/031015 US2004031015W WO2005028145A2 WO 2005028145 A2 WO2005028145 A2 WO 2005028145A2 US 2004031015 W US2004031015 W US 2004031015W WO 2005028145 A2 WO2005028145 A2 WO 2005028145A2
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- WO
- WIPO (PCT)
- Prior art keywords
- filter cake
- halide
- metal
- reductant
- alloy
- Prior art date
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Classifications
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- 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
- C22B34/1272—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 reduction of titanium halides, e.g. Kroll process
-
- 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
- C22B34/1295—Refining, melting, remelting, working up of titanium
-
- 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
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/02—Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action including acoustic waves
-
- 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
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/04—Refining by applying a vacuum
-
- 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
- the slurry has a solids fraction which depends in large part on the amount of excess
- reductant metal used to control the steady-state temperatures at which the reaction runs.
- a gel is formed from which
- the gel when formed includes the metal particles formed during the reduction, the salt particles formed during the reduction and interstitial or otherwise present liquid metal.
- halide of the elemental material or components of an alloy into a stoichiometric excess of a liquid reductant alkali or alkaline earth metal producing a powder of the elemental material or alloy and a halide salt of the reductant metal and excess liquid reductant metal followed by filtration to produce a filter cake the improvement comprising providing a heating element in contact with some of the filter cake to produce a temperature gradient across the filter cake under vacuum to distill liquid reductant metal from the filter cake and to sublimate the halide
- Another object of the present invention is to provide a process in which an elemental
- material or alloy thereof is made by the subsurface introduction of one or more of a vapor halide of the elemental material or components of the alloy into a stoichiometric excess of a liquid reductant alkali or alkaline earth metal producing a powder of the elemental material or
- the improvement comprising providing a heated inert sweep
- a final object of the present invention is to provide a process in which an elemental
- the improvement comprising providing a heating element in
- FIGURE 1 is an SEM of Ti powder of 3000 magnification as generally produced
- FIG. 2 is an SEM at 3000 magnification of a portion of Ti powder after salt migration
- the liquid metal in the gel or in the cake after the gel is broken or otherwise disposed of has to be removed by way of distillation with or without a vacuum or by contact with a hot
- the salt also has to be removed by way of dissolving in a water wash or
- sweep gas at positive or negative pressure, preferably inert to the constituents of the gel or any combination thereof.
- liquid sodium is used as a reducing metal, and titanium tetrachloride as the source of the halide vapor to produce titanium powder.
- this invention pertains to any product produced by the Armstrong Process.
- the gel therefore in this specific example, is liquid sodium, salt (NaCl) particles and titanium powder or particulates.
- a temperature gradient of about 500-600 C C is
- Figs 1 and 2 are SEMs at 3000 magnification of different portions of the cake formed during vacuum distillation of the cake for Run -008 and Fig.2 contains chemical analysis for oxygen content from other Runs -009
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
A process in which an elemental material or an alloy thereof is made by the subsurface introduction of one or more of a vapor halide of the elemental material or components of an alloy into a stoichiometric excess of a liquid reductant alkali or alkaline earth metal producing a powder of the elemental material or alloy and a halide salt of the reductant metal and excess liquid reductant metal followed by filtration to produce a filter cake. A heating element is contact with some of the filter cake to produce a temperature gradient across the filter cake under vacuum to distill liquid reductant metal from the filter cake and to sublimate the halide salt from a hotter portion of the filter cake to a cooler portion. A heated inert sweep gas in contact with the filter cake during and/or after distillation of the liquid metal reductant under vacuum sublimates the halide salt from the filter cake and transport the sublimated halide to a distant location.
Description
METHOD, APPARA TUS AND SYSTEM FOR SEGREGATING SALT FROM METAL POWDER
RELATED APPLICATIONS This application claims the benefit under Title 35, United States Code, '119(e) of U.S. Provisional Application Serial No. 60/ 502,921 filed September 15, 2003.
BACKGROUND OF THE INVENTION This invention relates to the Armstrong process as described in U.S. patents 5,779,761, 5,958,106 and 6,409,797, the disclosures of each of which is incorporated herein by reference. In the production of a metal or alloy or other elemental material as described in
the above-referenced patents, a slurry is produced which if filtered (see product separator 15 in Fig. 1 of the '106 patent) provides a filter cake which exists for a period of time in the form
of a gel. The slurry has a solids fraction which depends in large part on the amount of excess
reductant metal used to control the steady-state temperatures at which the reaction runs. As liquid metal drains through the filter to build the filter cake, a gel is formed from which
particles do not settle, unless the gel is broken, such as by mechanical disturbance or other
means. The gel when formed includes the metal particles formed during the reduction, the salt particles formed during the reduction and interstitial or otherwise present liquid metal.
SUMMARY OF THE INVENTION An object of the present invention is to provide a process in which an elemental material or an alloy thereof is made by the subsurface introduction of one or more of a vapor
halide of the elemental material or components of an alloy into a stoichiometric excess of a liquid reductant alkali or alkaline earth metal producing a powder of the elemental material or
alloy and a halide salt of the reductant metal and excess liquid reductant metal followed by filtration to produce a filter cake, the improvement comprising providing a heating element in contact with some of the filter cake to produce a temperature gradient across the filter cake under vacuum to distill liquid reductant metal from the filter cake and to sublimate the halide
salt from a hotter portion of the filter cake to a cooler portion. Another object of the present invention is to provide a process in which an elemental
material or alloy thereof is made by the subsurface introduction of one or more of a vapor halide of the elemental material or components of the alloy into a stoichiometric excess of a liquid reductant alkali or alkaline earth metal producing a powder of the elemental material or
alloy and a halide salt of the reductant metal and excess liquid reductant metal followed by filtration to produce a filter cake, the improvement comprising providing a heated inert sweep
gas in contact with the filter cake after distillation of the liquid metal reductant under vacuum to sublimate the halide salt from the filter cake and transport the sublimated halide to a
distant location. A final object of the present invention is to provide a process in which an elemental
material or an alloy thereof is made by the subsurface introduction of one or more of a vapor
halide of the elemental material or components of an alloy into a stoichiometric excess of a liquid reductant alkali or alkaline earth metal producing a powder of the elemental material or
alloy and a halide salt of the reductant metal and excess liquid reductant metal followed by filtration to produce a filter cake, the improvement comprising providing a heating element in
contact with some of the filter cake to produce a temperature gradient across the filter cake under vacuum to distill liquid reductant metal from the filter cake and to sublimate the halide salt from a hotter portion of the filter cake to a cooler portion, providing a heated inert sweep
gas in contact with the filter cake during and/or after distillation of the liquid metal reductant
under vacuum to sublimate the halide salt from the filter cake and transport the sublimated
halide to a distant location. The invention consists of certain novel features and a combination of parts hereinafter fully described, illustrated in the accompanying drawings, it being understood that various
changes in the details may be made without departing from the spirit, or sacrificing any of the advantages of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIGURE 1 is an SEM of Ti powder of 3000 magnification as generally produced
according to the Armstrong Process showing chemical analysis; and
FIG. 2 is an SEM at 3000 magnification of a portion of Ti powder after salt migration
showing oxygen contents for various runs. DESCRIPTION OF THE PREFERRED EMBODIMENT
The liquid metal in the gel or in the cake after the gel is broken or otherwise disposed of has to be removed by way of distillation with or without a vacuum or by contact with a hot
sweep gas at positive or negative pressure, preferably inert to the constituents of the gel or any
combination thereof. The salt also has to be removed by way of dissolving in a water wash or
by way of displacement or by distillation with or without a vacuum or by contact with a hot
sweep gas at positive or negative pressure, preferably inert to the constituents of the gel or any combination thereof.
In the specific example of the referenced patents, liquid sodium is used as a reducing metal, and titanium tetrachloride as the source of the halide vapor to produce titanium powder. However, this invention pertains to any product produced by the Armstrong Process. The gel, therefore in this specific example, is liquid sodium, salt (NaCl) particles and titanium powder or particulates.
In one instance of treatment of the filter cake and gel, vacuum distillation of the filter
cake at temperatures in the range of from about 500 °C to about 700 °C and at about 10 to about 50 millitorr pressure typically results in an initial temperature rise in the cake which
thereafter holds constant and a constant pressure for a long period of time, such as about 40,000 seconds (about 11 hours) to about 50,000 seconds (about 14 hours). Breaking the cake by physical or other means reduces the time required for liquid metal removal and is an important step in the inventive process. A temperature gradient of about 500-600 CC is
established in the cake between the surface of the heaters used to heat the cake which are positioned either interior of or exterior to the cake in separator 15 and the portion of the cake most remote from the heaters. During the course of the sodium distillation, salt is removed
from the cake closest to the heaters leaving titanium powder essentially free of both sodium
and salt; therefore, there is a concentration gradient of salt established in the cake between the cake closest to the heaters ( whether the heaters are interior or exterior of the cake) and the
cake most remote to the heaters. In this manner, salt and sodium are removed from the cake
without the presence of oxygen as in a water wash. Figs 1 and 2 are SEMs at 3000 magnification of different portions of the cake formed during vacuum distillation of the cake for Run -008 and Fig.2 contains chemical analysis for oxygen content from other Runs -009
and -012, showing the differences in oxygen concentration for water washed Titanium powder and unwashed powder.
It has also been discovered that using a sweep of inert gas such as argon heated, either at positive or negative pressure, preferably in the range of from about 500°C to about 800°C. during the distill increases the removal or migration of the salt.
While it seems obvious to introduce the filter cake into water to wash the residual salt (NaCl) from the titanium powder, the problem exists of the titanium reacting with the water
adding an oxide coating to the powder. Removing the salt (either by distillation with or
without vacuum or an inert gas sweep, heated or not or at positive or negative pressure) produces a titanium powder with markedly lower oxygen content than with a water wash.
While there has been disclosed what is considered to be the preferred embodiment of the present intention, it is understood that various changes in the details may be made without
departing from the spirit, or sacrificing any of the advantages of the present invention.
Claims
WHAT IS CLAIMED IS: 1. In a process in which an elemental material or an alloy thereof is made by the subsurface introduction of one or more of a vapor halide of the elemental material or components of an alloy into a stoichiometric excess of a liquid reductant alkali or alkaline
earth metal producing a powder of the elemental material or alloy and a halide salt of the
reductant metal and excess liquid reductant metal followed by filtration to produce a filter cake, the improvement comprising providing a heating element in contact with some of the
filter cake to produce a temperature gradient across the filter cake under vacuum to distill liquid reductant metal from the filter cake and to sublimate the halide salt from a hotter portion of the filter cake to a cooler portion.
2. The process of claim 1, wherein the halide is a chloride.
3. The process of claim 1, wherein the elemental material is titanium.
4. The process of claim 1, wherein the reductant metal is sodium.
5. The process of claim 1, wherein the halide is a chloride and said reductant
metal is sodium.
6. The process of claim 5, wherein the elemental metal is titanium or a titanium
alloy.
7. The process of claim 6, wherein the distillation under vacuum is at a temperature in the range of from about 500°C to about 800°C.
8. The process of claim 7, wherein the distillation is under a vacuum of from about 10 to about 50 millitorr.
9. The process of claim 1, wherein the filter includes concentric cylinders.
10. The process of claim 9, wherein heat is applied to the filter cake from the interior of the smallest cylinder.
11. The process of claim 9, wherein heat is applied to the filter cake from the
exterior of the largest cylinder.
12. In a process in which an elemental material or alloy thereof is made by the
subsurface introduction of one or more of a vapor halide of the elemental material or components of the alloy into a stoichiometric excess of a liquid reductant alkali or alkaline earth metal producing a powder of the elemental material or alloy and a halide salt of the
reductant metal and excess liquid reductant metal followed by filtration to produce a filter cake, the improvement comprising providing a heated inert sweep gas in contact with the
filter cake after distillation of the liquid metal reductant under vacuum to sublimate the halide salt from the filter cake and transport the sublimated halide to a distant location.
13. The process of claim 12, wherein the inert sweep gas is argon.
14. The process of claim 13, wherein the argon sweep gas is at a temperature in the
range of from about 600°C to about 850°C.
15. The process of claim 12, wherein the filtration is performed under positive
pressure and the distillation is performed under vacuum and the sweep gas is used to
sublimate the halide after substantially all of the reductant metal has been removed from the filter cake.
16. The process of claim 15, wherein the sweep gas is argon at a temperature in the range of from about 700°C to about 850°C and the halide is a chloride and the reductant
metal is sodium and the elemental material is titanium or the alloy is a titanium alloy.
17. In a process in which an elemental material or an alloy thereof is made by the subsurface introduction of one or more of a vapor halide of the elemental material or components of an alloy into a stoichiometric excess of a liquid reductant alkali or alkaline earth metal producing a powder of the elemental material or alloy and a halide salt of the
reductant metal and excess liquid reductant metal followed by filtration to produce a filter cake, the improvement comprising providing a heating element in contact with some of the
filter cake to produce a temperature gradient across the filter cake under vacuum to distill liquid reductant metal from the filter cake and to sublimate the halide salt from a hotter portion of the filter cake to a cooler portion, providing a heated inert sweep gas in contact
with the filter cake during and/or after distillation of the liquid metal reductant under vacuum
to sublimate the halide salt from the filter cake and transport the sublimated halide to a
distant location.
18. The process of claim 17, wherein the halide is a chloride.
19. The process of claim 18, wherein the elemental material is titanium.
20. The process of claim 17, wherein the reductant metal is sodium.
21. The process of claim 17, wherein the halide is a chloride and said reductant
metal is sodium.
22. The process of claim 21, wherein the elemental metal is titanium or a titanium
alloy.
23. The process of claim 22, wherein the distillation under vacuum is at a
temperature in the range of from about 500°C to about 800°C.
24. The process of claim 23, wherein the distillation is under a vacuum of from
about 10 to about 50 millitorr.
25. The process of claim 17, wherein the filter includes concentric cylinders.
26. The process of claim 25, wherein heat is applied to the filter cake from the interior of the smallest cylinder.
27. The process of claim 26, wherein heat is applied to the filter cake from the
exterior of the largest cylinder.
28. The process of claim 17, wherein the inert sweep gas is argon.
29. The process of claim 28, wherein the argon sweep gas is at a temperature in the
range of from about 600°C to about 850°C.
30. The process of claim 17, wherein the filtration is performed under positive
pressure and the distillation is performed under vacuum and the sweep gas is used to sublimate the halide after substantially all of the reductant metal has been removed from the
filter cake.
31. The process of claim 30, wherein the sweep gas is argon at a temperature in the
range of from about 700C to about 850C and the halide is a chloride and the reductant metal
is sodium and the elemental material is titanium or the alloy is a titanium alloy.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US50292103P | 2003-09-15 | 2003-09-15 | |
| US60/502,921 | 2003-09-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2005028145A2 true WO2005028145A2 (en) | 2005-03-31 |
| WO2005028145A3 WO2005028145A3 (en) | 2005-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US2004/031015 WO2005028145A2 (en) | 2003-09-15 | 2004-09-15 | Method, apparatus and system for segregating salt from metal powder |
Country Status (1)
| Country | Link |
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| WO (1) | WO2005028145A2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006042360A1 (en) * | 2004-10-20 | 2006-04-27 | Commonwealth Scientific And Industrial Research Organisation | Low temperature industrial process |
| WO2017027914A1 (en) | 2015-08-14 | 2017-02-23 | Coogee Titanium Pty Ltd | Method for recovery of metal-containing material from a composite material |
| WO2017027915A1 (en) | 2015-08-14 | 2017-02-23 | Coogee Titanium Pty Ltd | Method for production of a composite material using excess oxidant |
| CN111139366A (en) * | 2020-01-17 | 2020-05-12 | 蔡天财 | Method and equipment for preparing and purifying nuclear pure-grade cooling material in sodium-cooled fast reactor |
| US10960469B2 (en) | 2015-08-14 | 2021-03-30 | Coogee Titanium Pty Ltd | Methods using high surface area per volume reactive particulate |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7442227B2 (en) | 2001-10-09 | 2008-10-28 | Washington Unniversity | Tightly agglomerated non-oxide particles and method for producing the same |
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| GB778021A (en) * | 1954-08-23 | 1957-07-03 | Bayer Ag | Process for the production of titanium |
| US5259862A (en) * | 1992-10-05 | 1993-11-09 | The United States Of America As Represented By The Secretary Of The Interior | Continuous production of granular or powder Ti, Zr and Hf or their alloy products |
| US6409797B2 (en) * | 1994-08-01 | 2002-06-25 | International Titanium Powder Llc | Method of making metals and other elements from the halide vapor of the metal |
| WO2004028655A2 (en) * | 2002-09-07 | 2004-04-08 | International Titanium Powder, Llc. | Filter cake treatment method |
| WO2005019485A1 (en) * | 2003-08-22 | 2005-03-03 | International Titanium Powder, Llc. | Indexing separation system |
| WO2005021807A2 (en) * | 2003-09-02 | 2005-03-10 | International Titanium Powder, Llc. | Separtion system, method and apparatus |
-
2004
- 2004-09-15 WO PCT/US2004/031015 patent/WO2005028145A2/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB778021A (en) * | 1954-08-23 | 1957-07-03 | Bayer Ag | Process for the production of titanium |
| US5259862A (en) * | 1992-10-05 | 1993-11-09 | The United States Of America As Represented By The Secretary Of The Interior | Continuous production of granular or powder Ti, Zr and Hf or their alloy products |
| US6409797B2 (en) * | 1994-08-01 | 2002-06-25 | International Titanium Powder Llc | Method of making metals and other elements from the halide vapor of the metal |
| WO2004028655A2 (en) * | 2002-09-07 | 2004-04-08 | International Titanium Powder, Llc. | Filter cake treatment method |
| WO2005019485A1 (en) * | 2003-08-22 | 2005-03-03 | International Titanium Powder, Llc. | Indexing separation system |
| WO2005021807A2 (en) * | 2003-09-02 | 2005-03-10 | International Titanium Powder, Llc. | Separtion system, method and apparatus |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006042360A1 (en) * | 2004-10-20 | 2006-04-27 | Commonwealth Scientific And Industrial Research Organisation | Low temperature industrial process |
| EA011492B1 (en) * | 2004-10-20 | 2009-04-28 | Коммонвелт Сайентифик Энд Индастриал Рисерч Организейшн | Method for producing titanium |
| US7837759B2 (en) * | 2004-10-20 | 2010-11-23 | Commonwealth Scientific And Industrial Research Organisation | Low temperature industrial process |
| EP3334848A4 (en) * | 2015-08-14 | 2018-06-27 | Coogee Titanium Pty Ltd | Method for recovery of metal-containing material from a composite material |
| WO2017027915A1 (en) | 2015-08-14 | 2017-02-23 | Coogee Titanium Pty Ltd | Method for production of a composite material using excess oxidant |
| EP3334847A4 (en) * | 2015-08-14 | 2018-06-27 | Coogee Titanium Pty Ltd | Method for production of a composite material using excess oxidant |
| WO2017027914A1 (en) | 2015-08-14 | 2017-02-23 | Coogee Titanium Pty Ltd | Method for recovery of metal-containing material from a composite material |
| US10960469B2 (en) | 2015-08-14 | 2021-03-30 | Coogee Titanium Pty Ltd | Methods using high surface area per volume reactive particulate |
| US11078556B2 (en) | 2015-08-14 | 2021-08-03 | Coogee Titanium Pty Ltd | Method for production of a composite material using excess oxidant |
| US11162157B2 (en) | 2015-08-14 | 2021-11-02 | Coogee Titanium Pty Ltd | Method for recovery of metal-containing material from a composite material |
| AU2016309952B2 (en) * | 2015-08-14 | 2022-01-27 | Coogee Titanium Pty Ltd | Method for recovery of metal-containing material from a composite material |
| CN111139366A (en) * | 2020-01-17 | 2020-05-12 | 蔡天财 | Method and equipment for preparing and purifying nuclear pure-grade cooling material in sodium-cooled fast reactor |
| CN111139366B (en) * | 2020-01-17 | 2024-05-31 | 鹰潭市宇钠科技中心(有限合伙) | Method and equipment for preparing and purifying nuclear pure-grade cooling material in sodium-cooled fast reactor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2005028145A3 (en) | 2005-12-22 |
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| 121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
| 122 | Ep: pct application non-entry in european phase |