CN117431419A - Method for recycling tungsten from tungsten cobalt nickel alloy - Google Patents
Method for recycling tungsten from tungsten cobalt nickel alloy Download PDFInfo
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- CN117431419A CN117431419A CN202311609716.7A CN202311609716A CN117431419A CN 117431419 A CN117431419 A CN 117431419A CN 202311609716 A CN202311609716 A CN 202311609716A CN 117431419 A CN117431419 A CN 117431419A
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- Prior art keywords
- tungsten
- zinc
- nickel alloy
- cobalt
- recycling
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- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 229910052721 tungsten Inorganic materials 0.000 title claims abstract description 54
- 239000010937 tungsten Substances 0.000 title claims abstract description 54
- 229910000990 Ni alloy Inorganic materials 0.000 title claims abstract description 40
- YCOASTWZYJGKEK-UHFFFAOYSA-N [Co].[Ni].[W] Chemical compound [Co].[Ni].[W] YCOASTWZYJGKEK-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000004064 recycling Methods 0.000 title claims abstract description 17
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 239000011701 zinc Substances 0.000 claims abstract description 56
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 56
- 238000002386 leaching Methods 0.000 claims abstract description 34
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 22
- 230000001590 oxidative effect Effects 0.000 claims abstract description 19
- 230000003647 oxidation Effects 0.000 claims abstract description 16
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 16
- 238000003723 Smelting Methods 0.000 claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 15
- 239000010941 cobalt Substances 0.000 claims abstract description 12
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 12
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000005292 vacuum distillation Methods 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 8
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910001930 tungsten oxide Inorganic materials 0.000 claims abstract description 8
- 239000003513 alkali Substances 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 230000005496 eutectics Effects 0.000 claims abstract description 4
- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical compound [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 claims abstract description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 239000000243 solution Substances 0.000 claims description 13
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 2
- 239000012670 alkaline solution Substances 0.000 claims description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 2
- 238000000605 extraction Methods 0.000 abstract description 16
- 229910052759 nickel Inorganic materials 0.000 abstract description 10
- 238000002844 melting Methods 0.000 abstract description 8
- 230000008018 melting Effects 0.000 abstract description 8
- 239000000047 product Substances 0.000 description 21
- 229910045601 alloy Inorganic materials 0.000 description 18
- 239000000956 alloy Substances 0.000 description 18
- 230000000052 comparative effect Effects 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 10
- 239000002253 acid Substances 0.000 description 5
- 239000012634 fragment Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 238000002791 soaking Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- VEQPNABPJHWNSG-UHFFFAOYSA-N Nickel(2+) Chemical compound [Ni+2] VEQPNABPJHWNSG-UHFFFAOYSA-N 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- XYCQRIWVOKLIMW-UHFFFAOYSA-N [Co].[Ni].[Zn] Chemical compound [Co].[Ni].[Zn] XYCQRIWVOKLIMW-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910001429 cobalt ion Inorganic materials 0.000 description 1
- ZGDWHDKHJKZZIQ-UHFFFAOYSA-N cobalt nickel Chemical compound [Co].[Ni].[Ni].[Ni] ZGDWHDKHJKZZIQ-UHFFFAOYSA-N 0.000 description 1
- XLJKHNWPARRRJB-UHFFFAOYSA-N cobalt(2+) Chemical compound [Co+2] XLJKHNWPARRRJB-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001453 nickel ion Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Inorganic materials [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- C22B34/00—Obtaining refractory metals
- C22B34/30—Obtaining chromium, molybdenum or tungsten
- C22B34/36—Obtaining tungsten
-
- 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
- C22B7/008—Wet processes by an alkaline or ammoniacal leaching
Abstract
The invention discloses a method for recycling tungsten from tungsten cobalt nickel alloy, which comprises the following steps: mixing tungsten-cobalt-nickel alloy with zinc, smelting, forming low-melting-point two-phase eutectic liquid by zinc and binding phase metal cobalt and nickel, and then volatilizing the zinc by vacuum distillation to obtain a zinc smelting product; mechanically crushing the zinc melt product to obtain zinc melt powder; oxidizing and roasting the zinc melt powder in air to convert tungsten into tungsten oxide to obtain an oxidation product; and (3) alkaline leaching the oxidation product, wherein the tungsten oxide is dissolved by alkali to obtain a soluble tungstate leaching solution. The invention can obtain higher extraction rate of tungsten by combining zinc melting, oxidation and alkaline leaching processes.
Description
Technical Field
The invention relates to the technical field of alloy recycling, in particular to a method for recycling tungsten by using tungsten-cobalt-nickel alloy.
Background
Tungsten is a rare metal, and with the increasing production of various tungsten products, the yield is increased continuously, and the original ecological tungsten resource mineral reserves are exhausted gradually, so that the secondary recovery of tungsten from the tungsten-containing alloy waste is of great significance.
The tungsten-cobalt-nickel alloy is a tungsten-base heavy alloy based on tungsten (about 90-98%) and added with cobalt, nickel, iron, titanium, copper or other components, and is characterized by high sintering density and high strength.
The method for recycling the tungsten resources is commonly a mechanical crushing method, a saltpeter method, a zinc melting method, an electrolytic method, an acid leaching method, an oxidation method and the like, but the tungsten cobalt nickel alloy cannot be extracted by using any method independently, so that high tungsten extraction rate cannot be obtained.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a method for recycling tungsten from tungsten cobalt nickel alloy, which can obtain higher tungsten extraction rate by combining zinc melting, oxidation and alkaline leaching processes.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a method for recycling tungsten from tungsten cobalt nickel alloy comprises the following steps:
mixing tungsten-cobalt-nickel alloy with zinc, smelting, wherein the zinc, binding phase metal cobalt and nickel form low-melting-point two-phase eutectic liquid, and then carrying out vacuum distillation to volatilize the zinc to obtain a zinc smelting product;
mechanically crushing the zinc melt product to obtain zinc melt powder;
oxidizing and roasting the zinc melt powder in air to convert tungsten into tungsten oxide to obtain an oxidation product;
and (3) alkaline leaching the oxidation product, wherein the tungsten oxide is dissolved by alkali to obtain a soluble tungstate leaching solution.
The implementation of the embodiment of the invention has the following beneficial effects:
according to the embodiment of the invention, through the combined use of zinc melting, oxidation and alkaline leaching, the binding phase is separated from the hard alloy through zinc melting, and the compact alloy is loose integrally and is easy to crush into powder; and oxidizing the crushed powder to make the oxidation more sufficient, and finally leaching tungsten to leaching liquid by alkaline leaching, wherein doping elements such as cobalt, nickel and the like are remained in filter residues, and the extraction rate of tungsten can reach 96%.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention discloses a method for recycling tungsten from tungsten cobalt nickel alloy, which comprises the following steps:
1) And mixing the tungsten-cobalt-nickel alloy with zinc, smelting, forming low-melting-point two-phase eutectic liquid by the zinc and binding phase metal cobalt and nickel, and then volatilizing the zinc by vacuum distillation to obtain a zinc smelting product.
In the technical scheme, the tungsten cobalt nickel alloy is a block or sheet tungsten cobalt nickel alloy product, and is a purchased tungsten cobalt nickel alloy product which is not crushed, wherein tungsten accounts for 90-98 wt%, and doping elements mainly comprise cobalt and nickel, and can also comprise a small amount of iron, titanium, copper and other doping elements.
The method comprises the steps of firstly adopting a zinc melting method, forming low-melting-point zinc-cobalt-nickel alloy by cobalt, nickel and the like in the tungsten-cobalt-nickel alloy and zinc, and separating a binding phase from hard alloy by the reaction, so that the tungsten-cobalt-nickel alloy is loosened. And then the zinc is volatilized by vacuum distillation, and the tungsten-cobalt-nickel alloy is entirely fragile and easy to break.
Preferably, in a specific embodiment, the mixing mass ratio of the tungsten-cobalt-nickel alloy to the zinc is 1:1 to 1:2.
preferably, in one embodiment, the smelting temperature is 820 ℃ to 900 ℃; the smelting time is 10-15 h.
Preferably, in one embodiment, the temperature of the vacuum distillation is 950 ℃ to 970 ℃ and the time of the vacuum distillation is 10 hours to 20 hours.
2) And mechanically crushing the zinc melt product to obtain zinc melt powder.
3) And (3) oxidizing and roasting the zinc melt powder in air to convert tungsten into tungsten oxide, thereby obtaining an oxidation product.
In one embodiment, the temperature of the oxidizing roasting is 500-900 ℃ and the time of the oxidizing roasting is 1-10 hours, so that tungsten is fully oxidized into tungsten trioxide.
4) And (3) alkaline leaching the oxidation product, and dissolving tungsten oxide by alkali to obtain a soluble tungstate leaching solution.
In the step, tungsten enters the leaching solution, and doped elements such as cobalt, nickel and the like are remained in filter residues, so that the separation of tungsten from cobalt and nickel is realized.
Preferably, in a specific embodiment, the alkaline solution used for alkaline leaching comprises NaOH and Na 2 CO 3 One or more of ammonia water.
Preferably, the alkaline leaching temperature is 90-100 ℃, and the alkaline leaching time is 2-6 h.
The following are specific examples.
Example 1
1) 100g of a tungsten cobalt nickel alloy sheet (W: 96.29wt.%; co:1.80wt.%; ni:1.77wt.% into WO 3 121.33 wt.%), and 150g of zinc, and then placing the mixture into a smelting furnace, heating to 850 ℃, reacting for 10 hours, vacuumizing and continuously heating to 960 ℃, and reacting for 15 hours to obtain a zinc melt product.
2) And mechanically crushing the zinc melt product to obtain zinc melt powder.
3) And (3) oxidizing and roasting the zinc melt powder in air at the temperature of 700 ℃ for 2 hours to obtain an oxidized product.
4) Immersing the oxidation product in 5mol/L NaOH solution, heating to 95 ℃, soaking for 2 hours, and filtering to obtain leaching liquid and filter residues.
Taking filter residues and testing WO in the filter residues 3 The content of tungsten is 38.4%, and the extraction rate of tungsten is 96.20% after calculation.
Examples 2 to 3
Examples 2 to 3 differ from example 1 only in that: the temperature of the oxidizing roasting is 500 ℃ and 900 ℃ respectively, and the rest are the same.
Taking filter residues and testing WO in the filter residues 3 The content of the tungsten is 81.98 percent and 60.6 percent respectively, and the rest tungsten enters the leaching solution to calculate the extraction rate of the tungsten63.33% and 84.5%, respectively.
It can be obtained from examples 1 to 3 that: the preferred temperature for oxidative calcination is 700 ℃, with the highest extraction of tungsten.
Examples 4 to 5
Examples 4 to 5 differ from example 1 only in that: the time of the oxidizing roasting is 1h and 10h respectively, and the rest are the same.
Taking filter residues and testing WO in the filter residues 3 The contents of (2) are 76.51% and 56.74%, and the extraction rates of the rest tungsten are 65.73% and 92.9% respectively.
As is clear from examples 1 and 4 to 5: the preferable time of the oxidizing roasting is 2 hours, and the extraction rate of tungsten is highest.
Comparative example 1
Comparative example 1 differs from example 1 in that: the steps are different in sequence, firstly, oxidizing and roasting, then zinc melting, then mechanical crushing and finally alkaline leaching are carried out. The method comprises the following steps:
1) 100g of a tungsten cobalt nickel alloy sheet (W: 96.29wt.%; co:1.80wt.%; ni:1.77wt.% into WO 3 121.33 wt.%) and oxidizing roasting in air at 700 deg.C for 2 hr to obtain the surface oxidized alloy.
2) Mixing the surface layer oxidized alloy with 150g of zinc, placing the mixture in a smelting furnace, heating to 850 ℃, reacting for 10 hours, vacuumizing and continuously heating to 960 ℃, and reacting for 15 hours to obtain a zinc melt product.
3) Mechanically crushing and sieving the zinc melt product to obtain zinc melt powder.
4) Immersing zinc melt powder in 5mol/L NaOH solution, heating to 95 ℃, soaking for 2 hours, and filtering to obtain leaching liquid and filter residues.
Taking filter residues and testing WO in the filter residues 3 The content of tungsten is 120.8%, and the extraction rate of tungsten is calculated to be 0.89%.
The reason why the tungsten extraction rate was low in comparative example 1 is that: firstly, directly oxidizing the blocky tungsten cobalt nickel alloy, wherein the compact surface of the alloy is only slightly oxidized, and secondly, the zinc melt powder is tungsten cobalt nickel mixed powder which does not react with alkali and has no effect in alkali leaching.
Comparative example 2
Comparative example 2 differs from example 1 in that: the sequence of the steps is different, firstly, the mechanical crushing is carried out, then zinc is melted, oxidized and roasted, and finally alkaline leaching is carried out. The method comprises the following steps:
1) 100g of a tungsten cobalt nickel alloy sheet (W: 96.29wt.%; co:1.80wt.%; ni:1.77wt.% into WO 3 Is 121.33 wt.%) and mechanically crushed to obtain alloy fragments.
2) Mixing the alloy fragments with 150g of zinc, placing the mixture in a smelting furnace, heating to 850 ℃, reacting for 10 hours, vacuumizing and continuously heating to 960 ℃, and reacting for 15 hours to obtain a zinc melt product.
3) And (3) oxidizing and roasting the zinc melt product in air at the temperature of 700 ℃ for 2 hours to obtain an oxidized product.
4) Immersing the oxidation product in a NaOH solution with the concentration of 5mol/L, heating to 95 ℃ for 2 hours, and filtering to obtain leaching liquid and filter residues after completion of the soaking.
Taking filter residues and testing WO in the filter residues 3 The content of tungsten is 90.1%, and the extraction rate of tungsten is 55.82% after calculation.
The reason why the tungsten extraction rate was low in comparative example 2 is that: after zinc is melted, cobalt and nickel are replaced on the surface, and unbroken tungsten and oxygen cannot be fully contacted and oxidized, so that the alkaline leaching effect is poor.
Comparative example 3
Comparative example 3 differs from example 1 in that: the lack of a zinc melting step is specifically as follows:
1) 100g of a tungsten cobalt nickel alloy sheet (W: 96.29wt.%; co:1.80wt.%; ni:1.77wt.% into WO 3 Is 121.33 wt.%) and mechanically crushed to obtain fragmented gold pieces.
2) And (3) oxidizing and roasting the fragmented gold flakes in air at the temperature of 700 ℃ for 2 hours to obtain surface oxidized alloy fragments.
3) Immersing the surface oxidized alloy fragments in 5mol/L NaOH solution, heating to 95 ℃, soaking for 2 hours, and filtering the leaching solution and the crushed alloy fragments after completion.
Testing the filtrate for WO 3 The content of tungsten was 1.25g/L, and the remaining tungsten remained in the crushed alloy flakes, and the extraction rate of tungsten was calculated to be 0.52%.
Comparative example 3 the reason for low tungsten extraction is that: the chip-shaped tungsten cobalt nickel alloy has high specific gravity and compact components, so that the chip alloy has only slight oxidation of the surface layer, and the alkaline leaching is ineffective.
Comparative example 4
The acid leaching method in the prior art is adopted, and the specific steps are as follows: 100g of tungsten cobalt nickel alloy sheet (W: 96.29 wt.; co:1.80 wt.; ni:1.77 wt.%) was taken and converted to WO 3 Is 121.33 wt.%) in an acid solution of 5mol/L salt (sulfur, nitrate, vinegar) for 8h.
The concentrations of cobalt ions and nickel ions in the leaching solution are detected to be 0.1g/L and 0.1g/L respectively, the surface layer of the tungsten-cobalt-nickel alloy is unchanged, and the extraction rate of tungsten is calculated to be 0.1%.
It can be seen that the cobalt and nickel cannot be separated by directly acid leaching the tungsten cobalt nickel alloy, because: the tungsten cobalt nickel alloy is a high specific gravity alloy, and the components are compact, so that cobalt nickel in the alloy is difficult to dissolve by acids.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (8)
1. The method for recycling tungsten from tungsten cobalt nickel alloy is characterized by comprising the following steps of:
mixing tungsten-cobalt-nickel alloy with zinc, smelting, wherein the zinc, binding phase metal cobalt and nickel form low-melting-point two-phase eutectic liquid, and then carrying out vacuum distillation to volatilize the zinc to obtain a zinc smelting product;
mechanically crushing the zinc melt product to obtain zinc melt powder;
oxidizing and roasting the zinc melt powder in air to convert tungsten into tungsten oxide to obtain an oxidation product;
and (3) alkaline leaching the oxidation product, wherein the tungsten oxide is dissolved by alkali to obtain a soluble tungstate leaching solution.
2. The method for recycling tungsten from tungsten cobalt nickel alloy according to claim 1, wherein the mixing mass ratio of the tungsten cobalt nickel alloy to the zinc is 1:1 to 1:2.
3. the method for recycling tungsten from tungsten cobalt nickel alloy according to claim 1, wherein the smelting temperature is 820 ℃ -900 ℃; the smelting time is 10-15 h.
4. The method for recycling tungsten from tungsten cobalt nickel alloy according to claim 1, wherein the temperature of the vacuum distillation is 950-970 ℃, and the time of the vacuum distillation is 10-20 h.
5. The method for recycling tungsten from tungsten cobalt nickel alloy according to claim 1, wherein the temperature of the oxidizing roasting is 500-900 ℃, and the time of the oxidizing roasting is 1-10 h.
6. The method for recycling tungsten from tungsten cobalt nickel alloy according to claim 1, wherein the alkaline solution comprises NaOH and Na 2 CO 3 One or more of ammonia water.
7. The method for recycling tungsten from tungsten cobalt nickel alloy according to claim 1, wherein the alkaline leaching temperature is 90 ℃ to 100 ℃.
8. The method for recycling tungsten from tungsten cobalt nickel alloy according to claim 1, wherein the alkaline leaching time is 2-6 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311609716.7A CN117431419A (en) | 2023-11-29 | 2023-11-29 | Method for recycling tungsten from tungsten cobalt nickel alloy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311609716.7A CN117431419A (en) | 2023-11-29 | 2023-11-29 | Method for recycling tungsten from tungsten cobalt nickel alloy |
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| CN117431419A true CN117431419A (en) | 2024-01-23 |
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| CN202311609716.7A Pending CN117431419A (en) | 2023-11-29 | 2023-11-29 | Method for recycling tungsten from tungsten cobalt nickel alloy |
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| Country | Link |
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| CN (1) | CN117431419A (en) |
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