CN113981250A - Method for extracting vanadium by sodium salt roasting of vanadium slag - Google Patents
Method for extracting vanadium by sodium salt roasting of vanadium slag Download PDFInfo
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- CN113981250A CN113981250A CN202111253728.1A CN202111253728A CN113981250A CN 113981250 A CN113981250 A CN 113981250A CN 202111253728 A CN202111253728 A CN 202111253728A CN 113981250 A CN113981250 A CN 113981250A
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- vanadium
- vanadium slag
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- sodium salt
- slag
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- 229910052720 vanadium Inorganic materials 0.000 title claims abstract description 184
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 title claims abstract description 184
- 239000002893 slag Substances 0.000 title claims abstract description 103
- 238000000034 method Methods 0.000 title claims abstract description 40
- 159000000000 sodium salts Chemical class 0.000 title claims abstract description 29
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 56
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 38
- 229910052742 iron Inorganic materials 0.000 claims abstract description 28
- 238000007885 magnetic separation Methods 0.000 claims abstract description 25
- 238000000605 extraction Methods 0.000 claims abstract description 21
- 238000002386 leaching Methods 0.000 claims abstract description 21
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- CMZUMMUJMWNLFH-UHFFFAOYSA-N sodium metavanadate Chemical compound [Na+].[O-][V](=O)=O CMZUMMUJMWNLFH-UHFFFAOYSA-N 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910000166 zirconium phosphate Inorganic materials 0.000 claims abstract description 11
- 238000000227 grinding Methods 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims abstract description 7
- 238000000926 separation method Methods 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 239000000843 powder Substances 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 12
- 229910052751 metal Inorganic materials 0.000 abstract description 9
- 239000002184 metal Substances 0.000 abstract description 9
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract 1
- 238000003723 Smelting Methods 0.000 abstract 1
- 238000004537 pulping Methods 0.000 abstract 1
- 235000017550 sodium carbonate Nutrition 0.000 description 15
- 238000005245 sintering Methods 0.000 description 8
- 230000001590 oxidative effect Effects 0.000 description 5
- 238000001914 filtration Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 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 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PNXOJQQRXBVKEX-UHFFFAOYSA-N iron vanadium Chemical compound [V].[Fe] PNXOJQQRXBVKEX-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
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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
- C22B34/20—Obtaining niobium, tantalum or vanadium
- C22B34/22—Obtaining vanadium
-
- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
-
- 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
- C22B7/001—Dry processes
-
- 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
-
- 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
- C22B7/04—Working-up slag
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for extracting vanadium by sodium salt roasting of vanadium slag, belonging to the technical field of non-ferrous metal smelting. The method comprises the steps of finely grinding vanadium slag in a multistage vertical fine grinding machine, separating metal iron in the vanadium slag meeting the particle size requirement in a multistage magnetic separation system, mixing the vanadium slag after the metal iron is separated with sodium carbonate, roasting in a rotary kiln, mixing roasted clinker with water, pulping in a high-efficiency self-suction stirring device, leaching, and performing liquid-solid separation after leaching reaction to obtain sodium vanadate leaching solution and vanadium extraction tailings. The method does not need returning materials, only needs one-time roasting, improves the single treatment capacity by more than 80 percent, has low energy consumption and simple flow, ensures that the leaching rate of vanadium reaches more than 95 percent, and has high vanadium yield.
Description
Technical Field
The invention relates to the technical field of vanadium extraction by sodium salt roasting of vanadium slag, in particular to a method for extracting vanadium by sodium salt roasting of vanadium slag.
Background
The vanadium slag is obtained by oxidizing and converting vanadium-containing pig iron, is a main vanadium extraction raw material at home and abroad, and accounts for about 90 percent of the total amount of the vanadium extraction raw material. The sodium roasting vanadium extraction process is widely applied to vanadium slag vanadium extraction due to mature technology, and accounts for about 80% of the vanadium slag vanadium extraction industry at present, so the sodium roasting vanadium extraction is the mainstream vanadium extraction technology in the vanadium industry at present.
The vanadium slag sodium salt roasting is to mix vanadium slag and sodium carbonate and oxidize and roast the mixture at about 800 ℃. During the oxidizing roasting process, various reactions occur, including processes of oxidation of vanadium iron spinel, oxidation of metallic iron, sodium treatment of low-valence vanadium, oxidation of low-valence vanadium and the like, wherein the oxidation of iron can generate a large amount of heat, so that the material is locally overheated to generate melt, and the sintering of the roasting process is caused. The low-valence vanadium is oxidized into pentavalent vanadium, and then the pentavalent vanadium reacts with sodium carbonate to form sodium metavanadate, and the sodium metavanadate has a low melting point, so that a liquid-phase melt is easily formed, and the sintering of the roasted material is caused. The sintering of materials leads to a large amount of vanadium to be wrapped, influences the yield of vanadium on the one hand, and easily leads to ring formation of a rotary kiln or bonding inside a multi-hearth furnace on the other hand, worsens the roasting working condition, and leads to furnace shutdown and production stoppage. In order to solve the problems, in the prior art, part of vanadium extraction tailings is returned to be mixed with vanadium slag to reduce the liquid phase content in the roasting process of the vanadium slag, material sintering is avoided, the amount of returned tailings is about 0.8-1.2 times of the amount of the vanadium slag, the single material processing capacity of the roasting process is greatly reduced, and the production efficiency of a system is reduced.
Patent CN102477491A discloses a vanadium slag sodium salt roasting method, which is to carry out pre-reaction on vanadium slag and an oxidant to oxidize low-valence vanadium in the vanadium slag into pentavalent vanadium, and then cool the oxidized vanadium slag, mix the oxidized vanadium slag with sodium carbonate and heat up for roasting.
Patent CN102851507B discloses a method for solving the problem of sintering of vanadium slag during roasting, which comprises the steps of roasting a mixed material of vanadium slag and soda ash in a weak oxidizing atmosphere, and then roasting a roasted clinker for secondary roasting in a strong oxidizing atmosphere.
In summary, in the current vanadium slag sodium salt roasting vanadium extraction technology, the problem of material sintering in the vanadium slag sodium salt roasting process is solved by returning tailings or roasting in multiple stages, and the problems of long process, high energy consumption and low vanadium yield generally exist, so that a new vanadium slag sodium salt roasting method needs to be developed to solve the problems in the current vanadium slag sodium salt roasting process.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method for extracting vanadium by sodium salt roasting of vanadium slag, which does not need material returning and is short in flow and low in energy consumption by roasting once on the premise of solving the problem of material sintering.
In order to realize the technical purpose, the invention adopts the following scheme: the method for extracting vanadium by carrying out sodium salt roasting on vanadium slag comprises the following steps:
s1, pouring the vanadium slag into a multistage vertical mill for full grinding to obtain vanadium slag powder;
s2, removing simple substance iron from the vanadium slag powder through multiple magnetic separation (firstly carrying out weak magnetic dry separation and then carrying out strong magnetic dry separation) to obtain vanadium slag with the simple substance iron mass content less than or equal to 3%;
s3, mixing the vanadium slag powder subjected to iron removal with sodium carbonate according to a ratio, and roasting in a rotary kiln;
s4, after the roasting reaction is finished, mixing the roasted clinker with water to prepare slurry, and pouring the slurry into a high-efficiency self-suction type stirring reactor to carry out leaching reaction, wherein the structure of the self-suction type stirring reactor is disclosed in a patent of utility model No. CN 207822903U;
and S5, after the leaching reaction is finished, carrying out solid-liquid separation on the slurry to obtain a sodium vanadate solution and vanadium extraction tailings.
Compared with the prior art, the invention has the beneficial effects that: the method solves the problem of material sintering, and only needs one-time roasting without returning materials, thereby reducing the process energy consumption and shortening the flow time, and the single treatment capacity is improved by more than 80 percent compared with the prior method; and the vanadium yield is improved, and the leaching rate of vanadium reaches more than 95 percent.
The preferred scheme of the invention is as follows:
the particle size of the vanadium slag powder obtained by grinding S1 is less than 100 mu m, preferably the vanadium slag powder D9050 to 80 μm.
The number of magnetic separation stages in the S2 is 2-6 stages, preferably 3-5 stages. The iron content in the vanadium slag powder after magnetic separation is less than 3 percent, and preferably less than 0.5 percent.
The mixing ratio of the vanadium slag powder subjected to iron removal and sodium carbonate in the S3 is 1: 0.6-0.75, preferably 1: 0.6-0.65, in terms of the molar ratio of total vanadium to sodium carbonate in the vanadium slag.
The roasting temperature of the rotary kiln in S3 is 700-900 ℃, and preferably 800-850 ℃; the roasting time is 2-5 h, preferably 3-4 h.
The solid-liquid mass ratio of the roasting clinker to water in S4 is 3-5: 1, and preferably 4-5: 1.
The leaching temperature in S4 is 70-90 ℃, and preferably 80-85 ℃; the leaching time is 2-4 h, preferably 2-3 h.
Drawings
FIG. 1 is a process flow chart of a method for extracting vanadium by sodium salt roasting of vanadium slag provided by the embodiment of the invention.
Detailed Description
The present invention will be described in detail with reference to the following embodiments in order to fully understand the objects, features and effects of the invention, but the present invention is not limited thereto.
The process flow chart of the method for extracting vanadium by sodium salt roasting of vanadium slag is shown in figure 1, and the elementary substance iron and vanadium in the vanadium slag are calculated by mass percent.
Example 1
The embodiment provides a method for extracting vanadium by sodium salt roasting of vanadium slag without return slag and with high conversion rate, which comprises the following steps:
s1, fully grinding the vanadium slag containing 10 percent of simple substance iron and 6.8 percent of vanadium in a multi-stage vertical mill until the particle size of the vanadium slag is less than 100 microns.
And S2, performing magnetic separation on the obtained vanadium slag to obtain vanadium slag containing 1% of simple substance iron and 7% of vanadium, wherein the magnetic separation stage number is 3, performing first weak magnetic separation, and performing second strong magnetic separation.
S3, mixing sodium carbonate and the vanadium slag after the metal iron is separated according to the molar ratio of total vanadium to sodium carbonate in the vanadium slag of 1:0.6, and roasting for 1.5h in a rotary kiln at 750 ℃.
S4, adding water into the roasted vanadium slag by a self-suction paddle, wherein the solid-to-liquid ratio of the vanadium slag to the water is 3:1, and leaching for 2.5h at 65 ℃.
S5, filtering the obtained slurry to obtain a sodium vanadate solution and vanadium extraction tailings, wherein the content of vanadium in the sodium vanadate solution is 35 g/L, the mass percentage of vanadium in the vanadium extraction tailings is 0.3%, and the leaching rate of vanadium is 95.7%.
Example 2
The embodiment provides a method for extracting vanadium by sodium salt roasting of vanadium slag without return slag and with high conversion rate, which comprises the following steps:
s1, fully grinding vanadium slag containing 13% of simple substance iron and 7% of vanadium in a multi-stage vertical mill, and crushing until the particle size of the vanadium slag is less than 80 microns.
S2, separating metal iron from the obtained vanadium slag through magnetic separation to obtain vanadium slag containing 0.8% of simple substance iron and 7.5% of vanadium, wherein the magnetic separation stage number is 3, the vanadium slag is subjected to first weak magnetic separation and then to second strong magnetic separation.
S3, roasting the sodium carbonate and the vanadium slag after the metal iron is separated in a rotary kiln at 800 ℃ for 2 hours according to the molar ratio of total vanadium to sodium carbonate in the vanadium slag of 1: 0.65.
S4, adding water into the roasted vanadium slag by a self-suction paddle, wherein the solid ratio of the vanadium slag to water is 4:1, and leaching for 3 hours at 70 ℃.
S5, filtering the obtained slurry to obtain a sodium vanadate solution and vanadium extraction tailings, wherein the content of vanadium in the sodium vanadate solution is 38 g/L, the mass percentage of vanadium in the vanadium extraction tailings is 0.35%, and the leaching rate of vanadium is 95.3%.
Example 3
The embodiment provides a method for extracting vanadium by sodium salt roasting of vanadium slag without return slag and with high conversion rate, which comprises the following steps:
s1, fully grinding the vanadium slag containing 15% of simple substance iron and 6.7% of vanadium in a multi-stage vertical mill until the particle size of the vanadium slag is less than 90 microns.
S2, separating metal iron from the obtained vanadium slag through magnetic separation to obtain vanadium slag containing 0.9% of simple substance iron and 7.2% of vanadium, wherein the magnetic separation stage number is 4, the two times of weak magnetic separation are carried out firstly, and the two times of strong magnetic separation are carried out secondly.
S3, roasting the sodium carbonate and the vanadium slag after the metal iron is separated in a rotary kiln at 800 ℃ for 2.5h according to the molar ratio of total vanadium to sodium carbonate in the vanadium slag of 1: 0.65.
S4, adding water into the roasted vanadium slag by a self-suction paddle, wherein the solid ratio of the vanadium slag to water is 4:1, and leaching for 3 hours at 70 ℃.
S5, filtering the obtained slurry to obtain a sodium vanadate solution and vanadium extraction tailings, wherein the content of vanadium in the sodium vanadate solution is 30 g/L, the content of vanadium in the vanadium extraction tailings is 0.29%, and the leaching rate of vanadium is 95.97%.
Example 4
The embodiment provides a method for extracting vanadium by sodium salt roasting of vanadium slag without return slag and with high conversion rate, which comprises the following steps:
s1, fully grinding vanadium slag containing 8% of simple substance iron and 7.9% of vanadium in a multi-stage vertical mill until the particle size of the vanadium slag is less than 50 microns.
S2, carrying out magnetic separation on the obtained vanadium slag to obtain vanadium slag containing 1.2% of simple substance iron and 8% of vanadium, wherein the magnetic separation stage number is 4, carrying out two times of weak magnetic separation, and then carrying out two times of strong magnetic separation.
S3, roasting the sodium carbonate and the vanadium slag after the metal iron is separated at 850 ℃ for 3h according to the molar ratio of total vanadium to the sodium carbonate in the vanadium slag of 1: 0.6.
S4, adding water into the roasted vanadium slag by a self-suction paddle, wherein the solid ratio of the vanadium slag to water is 5:1, and leaching for 3.5 hours at 80 ℃.
S5, filtering the obtained slurry to obtain a sodium vanadate solution and vanadium extraction tailings, wherein the content of vanadium in the sodium vanadate solution is 37 g/L, the content of vanadium in the vanadium extraction tailings is 0.3%, and the leaching rate of the vanadium slag is 96.25%.
Finally, it is noted that: the above-mentioned list is only the preferred embodiment of the present invention, and naturally those skilled in the art can make modifications and variations to the present invention, which should be considered as the protection scope of the present invention provided they are within the scope of the claims of the present invention and their equivalents.
Claims (10)
1. A method for extracting vanadium by sodium salt roasting of vanadium slag is characterized by comprising the following steps:
s1, pouring the vanadium slag into a multi-stage vertical mill for full grinding to obtain vanadium slag powder;
s2, removing simple substance iron from the vanadium slag powder through multiple magnetic separation;
s3, mixing the vanadium slag powder subjected to iron removal with sodium carbonate according to a ratio, and roasting in a rotary kiln;
s4, mixing the roasted clinker with water to prepare slurry after the roasting reaction is finished, and pouring the slurry into a self-suction stirring reactor to carry out leaching reaction;
and S5, after the leaching reaction is finished, carrying out solid-liquid separation on the slurry to obtain a sodium vanadate solution and vanadium extraction tailings.
2. The method for extracting vanadium by sodium salt roasting of vanadium slag as claimed in claim 1, wherein the particle size of the vanadium slag powder in S1 is less than 100 μm.
3. The method for extracting vanadium through sodium salt roasting of vanadium slag as claimed in claim 1, wherein in S2, the vanadium slag powder is subjected to low-intensity magnetic separation and then to high-intensity magnetic separation, and the number of magnetic separation stages is 2-6.
4. The method for extracting vanadium by sodium salt roasting of vanadium slag as claimed in claim 1, wherein the iron content in the vanadium slag powder after magnetic separation is less than 3%.
5. The method for extracting vanadium through sodium salt roasting of vanadium slag according to claim 1, wherein the mixing ratio of vanadium slag powder subjected to iron removal and sodium carbonate in S3 is 1: 0.6-0.75 in terms of the molar ratio of total vanadium to sodium carbonate in the vanadium slag.
6. The method for extracting vanadium through sodium salt roasting of vanadium slag according to claim 1, wherein the roasting temperature of a rotary kiln in S3 is 700-900 ℃.
7. The method for extracting vanadium through sodium salt roasting of vanadium slag according to claim 1, wherein roasting time in S3 is 2-5 h.
8. The method for extracting vanadium through sodium salt roasting of vanadium slag as claimed in claim 1, wherein the mass ratio of the roasting clinker to water in S4 is 3-5: 1.
9. The method for extracting vanadium through sodium salt roasting of vanadium slag according to claim 1, wherein the leaching temperature in S4 is 70-90 ℃.
10. The method for extracting vanadium through sodium salt roasting of vanadium slag according to claim 1, wherein leaching time in S4 is 2-4 h.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115216635A (en) * | 2022-07-18 | 2022-10-21 | 中南大学 | Method for removing alkali metal by reinforced vanadium extraction tailings calcification roasting-leaching |
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| CN86108218A (en) * | 1986-12-01 | 1987-08-12 | 冶金工业部攀枝花钢铁研究院 | Rotary kiln bakes to burn the article vanadium slag-water logging extraction vanadium method |
| CN102477491A (en) * | 2010-11-30 | 2012-05-30 | 攀钢集团钢铁钒钛股份有限公司 | Method for extracting vanadium from vanadium slag |
| CN104561526A (en) * | 2015-01-29 | 2015-04-29 | 四川省川威集团有限公司 | High-all-vanadium sodium modification roasting method |
| CN106065435A (en) * | 2016-07-18 | 2016-11-02 | 江苏省冶金设计院有限公司 | A kind of method and system processing vanadium slag |
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- 2021-10-27 CN CN202111253728.1A patent/CN113981250A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86108218A (en) * | 1986-12-01 | 1987-08-12 | 冶金工业部攀枝花钢铁研究院 | Rotary kiln bakes to burn the article vanadium slag-water logging extraction vanadium method |
| CN102477491A (en) * | 2010-11-30 | 2012-05-30 | 攀钢集团钢铁钒钛股份有限公司 | Method for extracting vanadium from vanadium slag |
| CN104561526A (en) * | 2015-01-29 | 2015-04-29 | 四川省川威集团有限公司 | High-all-vanadium sodium modification roasting method |
| CN106065435A (en) * | 2016-07-18 | 2016-11-02 | 江苏省冶金设计院有限公司 | A kind of method and system processing vanadium slag |
Non-Patent Citations (1)
| Title |
|---|
| 浙江省煤炭工业局编: "《石煤的综合利用》", 北京：煤炭工业出版社, pages: 163 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115216635A (en) * | 2022-07-18 | 2022-10-21 | 中南大学 | Method for removing alkali metal by reinforced vanadium extraction tailings calcification roasting-leaching |
| CN115216635B (en) * | 2022-07-18 | 2023-07-21 | 中南大学 | Method for removing alkali metal by calcified roasting-leaching of reinforced vanadium extraction tailings |
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Application publication date: 20220128 |