CN113737026A - Method for cleanly extracting vanadium from titanium tetrachloride refined vanadium slag - Google Patents
Method for cleanly extracting vanadium from titanium tetrachloride refined vanadium slag Download PDFInfo
- Publication number
- CN113737026A CN113737026A CN202110889949.1A CN202110889949A CN113737026A CN 113737026 A CN113737026 A CN 113737026A CN 202110889949 A CN202110889949 A CN 202110889949A CN 113737026 A CN113737026 A CN 113737026A
- Authority
- CN
- China
- Prior art keywords
- vanadium
- solution
- titanium tetrachloride
- slag
- valent
- 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.)
- Pending
Links
- 229910052720 vanadium Inorganic materials 0.000 title claims abstract description 101
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 title claims abstract description 101
- 239000002893 slag Substances 0.000 title claims abstract description 30
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000002386 leaching Methods 0.000 claims abstract description 23
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical compound [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 claims abstract description 16
- 239000012452 mother liquor Substances 0.000 claims abstract description 16
- 239000005708 Sodium hypochlorite Substances 0.000 claims abstract description 13
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims abstract description 13
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000001556 precipitation Methods 0.000 claims abstract description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims abstract description 8
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 claims abstract description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 7
- 235000019270 ammonium chloride Nutrition 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims abstract description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 6
- 238000005406 washing Methods 0.000 claims abstract description 6
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 5
- 230000001590 oxidative effect Effects 0.000 claims abstract description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims 1
- 238000000605 extraction Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 239000000284 extract Substances 0.000 abstract description 2
- 238000005272 metallurgy Methods 0.000 abstract description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007062 hydrolysis Effects 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
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 239000002351 wastewater Substances 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
- C22B34/00—Obtaining refractory metals
- C22B34/20—Obtaining niobium, tantalum or vanadium
- C22B34/22—Obtaining vanadium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G31/00—Compounds of vanadium
- C01G31/02—Oxides
-
- 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
- C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical 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
Abstract
The invention belongs to the technical field of vanadization metallurgy, and particularly relates to a method for cleanly extracting vanadium from titanium tetrachloride refined vanadium slag, wherein the vanadium slag is mixed with water and naturally leached to obtain vanadium-containing mother liquor; oxidizing the vanadium-containing mother liquor by using a sodium hypochlorite solution to convert the vanadium-containing mother liquor into a 5-valent vanadium solution; adjusting the pH value of the 5-valent vanadium solution to enable the 5-valent vanadium solution to have hydrolysis reaction to obtain a vanadium-rich red cake; through Na2CO3Carrying out secondary leaching on the red cake obtained in the step 3 by using the solution; adding ammonium chloride into the solution leached in the second step 4 according to a preset ammonium adding coefficient to carry out vanadium precipitation to obtain ammonium metavanadate; washing ammonium metavanadate with water, and drying the obtained ammonium metavanadate; roasting the obtained ammonium metavanadate under an aerobic condition to obtain vanadium pentoxide; the invention extracts from titanium tetrachloride refined waste residueThe vanadium extraction method provided by the invention has the advantages that the comprehensive utilization of resources is realized, and compared with the traditional roasting vanadium extraction method, the one-time investment of equipment is low and the operation cost is low.
Description
Technical Field
The invention belongs to the technical field of vanadization metallurgy, and particularly relates to a method for cleanly extracting vanadium from titanium tetrachloride refined vanadium slag.
Background
Titanium tetrachloride is an important intermediate for the production of metallic titanium and its compounds. In the greenhouse, titanium tetrachloride was a colorless liquid and fuming in air to produce a mixture of titanium dioxide solids and hydrochloric acid droplets.
In the prior process of producing titanium tetrachloride, a series of chemical reactions occur after a vanadium removing agent is added in a refining stage, a vanadium-containing compound precipitate is generated, the residual titanium tetrachloride is recovered, vanadium slag enriched in vanadium is obtained, and the vanadium slag enriched in the vanadium slag is extracted because the vanadium slag has high chlorine content and is not beneficial to stockpiling, so that the problem of treating the vanadium slag can be solved, and the resource recycling can be realized.
Disclosure of Invention
The invention provides a method for cleanly extracting vanadium from titanium tetrachloride refined vanadium slag, aiming at solving the problem of extracting vanadium from the vanadium slag.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for cleanly extracting vanadium from titanium tetrachloride refined vanadium slag comprises the following steps:
step 1: mixing vanadium slag with water, and naturally leaching to obtain vanadium-containing mother liquor;
step 2: oxidizing the vanadium-containing mother liquor by using a sodium hypochlorite solution to convert the vanadium-containing mother liquor into a 5-valent vanadium solution;
and step 3: adjusting the pH value of the 5-valent vanadium solution to enable the 5-valent vanadium solution to have hydrolysis reaction to obtain a vanadium-rich red cake;
and 4, step 4: through Na2CO3Carrying out secondary leaching on the red cake obtained in the step 3 by using the solution;
and 5: adding ammonium chloride into the solution leached in the second step 4 according to a preset ammonium adding coefficient to carry out vanadium precipitation to obtain ammonium metavanadate;
step 6: washing ammonium metavanadate with water, and drying the obtained ammonium metavanadate;
and 7: and roasting the obtained ammonium metavanadate under an aerobic condition to obtain vanadium pentoxide.
Compared with the prior art, the invention has the beneficial effects that: the method extracts vanadium from the titanium tetrachloride refined waste residue, realizes comprehensive utilization of resources, and has low operation cost and one-time investment of equipment compared with the traditional roasting vanadium extraction method.
The leaching rate of the slag generated after natural leaching in the step 1 cannot reach 100 percent, so that the residual vanadium in the slag can be leached in a repeated leaching mode, the overall yield can be improved, and the main component of the residual slag is TiO after repeated leaching2And the waste residues can be recycled by a mineral separation mode, so that the generated waste water is easy to treat, and the waste residues are recycled.
Drawings
FIG. 1 is a schematic diagram of a vanadium extraction process according to the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following detailed description of the preferred embodiment of the present invention is made with reference to fig. 1;
step 1: mixing vanadium slag with water, and naturally leaching to obtain vanadium-containing mother liquor; the solid-liquid ratio of the vanadium slag and water after mixing is 3:1, the leaching temperature is 25 ℃, and the leaching time is 24 hours; the leaching rate of the vanadium-containing mother liquor obtained by leaching the parameters can reach more than 87%;
step 2: oxidizing the vanadium-containing mother liquor by using a sodium hypochlorite solution to convert the vanadium-containing mother liquor into a 5-valent vanadium solution; the chlorine content in the sodium hypochlorite is more than or equal to 3 percent and less than or equal to 10 percent; the volume ratio of the sodium hypochlorite dosage to the vanadium-containing mother liquor is 1 to 2, and the arbitrary value ratio is 1; that is, the volume ratio of the sodium hypochlorite to the vanadium-containing mother liquor is any number of 1 to 2: 1. it should be noted that the concentration of sodium hypochlorite is not too low, otherwise, the addition of a large amount of sodium hypochlorite can cause the solution to be excessively diluted, which causes adverse effects on subsequent processes, and conversely, the higher the concentration of sodium hypochlorite, the smaller the amount of sodium hypochlorite, the shorter the oxidation time; the concentration of sodium hypochlorite here refers to the chlorine content.
And step 3: adjusting the pH value of the 5-valent vanadium solution to enable the 5-valent vanadium solution to have hydrolysis reaction to obtain a vanadium-rich red cake; in the step, NaOH is used for adjusting the pH value of a 5-valent vanadium solution, the pH value of the 5-valent vanadium solution is adjusted to 1 to 1.5 through the NaOH, and the concentration of the 5-valent vanadium solution is controlled to be more than 20 g/L; the hydrolysis temperature is controlled between 25 ℃ and 40 ℃.
And 4, step 4: through Na2CO3Carrying out secondary leaching on the red cake obtained in the step 3 by using the solution; the Na is2CO3The adding amount is 20 to 30 percent of the mass of the obtained red cake; the solid-liquid ratio is 5:1, namely the red cake and Na2CO3The ratio of the total mass of the water to the total mass of the water is 5: 1; the higher the temperature is, the higher the leaching rate is; the temperature is controlled between 25 ℃ and 100 ℃, and the average leaching rate can reach 85 percent or more.
And 5: adding ammonium chloride into the solution leached in the second step 4 according to a preset ammonium adding coefficient to carry out vanadium precipitation to obtain ammonium metavanadate; the ammonium addition coefficient is any number of K-1 to 2, K-m/cv, the vanadium precipitation temperature is 40-50 ℃, and the Ph of the vanadium precipitation solution is 4-6; the vanadium precipitation rate can reach 97 percent;
k … … plus ammonium coefficient;
mass of m … … ammonium chloride;
c … … mass concentration of vanadium in the leaching solution;
v … … volume of leachate.
Step 6: washing ammonium metavanadate with water, and drying the obtained ammonium metavanadate; the washing times are 1 to 2, and the drying temperature is 550 to 600 ℃.
And 7: and roasting the obtained ammonium metavanadate under an aerobic condition to obtain vanadium pentoxide. The roasting temperature is controlled between 550 ℃ and 600 ℃, and the roasting environment keeps sufficient oxygen.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. A method for cleanly extracting vanadium from titanium tetrachloride refined vanadium slag is characterized by comprising the following steps:
step 1: mixing vanadium slag with water, and naturally leaching to obtain vanadium-containing mother liquor;
step 2: oxidizing the vanadium-containing mother liquor by using a sodium hypochlorite solution to convert the vanadium-containing mother liquor into a 5-valent vanadium solution;
and step 3: adjusting the pH value of the 5-valent vanadium solution to enable the 5-valent vanadium solution to have hydrolysis reaction to obtain a vanadium-rich red cake;
and 4, step 4: through Na2CO3Carrying out secondary leaching on the red cake obtained in the step 3 by using the solution;
and 5: adding ammonium chloride into the solution leached in the second step 4 according to a preset ammonium adding coefficient to carry out vanadium precipitation to obtain ammonium metavanadate;
step 6: washing ammonium metavanadate with water, and drying the obtained ammonium metavanadate;
and 7: and (4) roasting the ammonium metavanadate obtained in the step (6) under an aerobic condition to obtain vanadium pentoxide.
2. The method for cleanly extracting vanadium from titanium tetrachloride refined vanadium slag according to claim 1, characterized in that the solid-to-liquid ratio of the vanadium slag to the liquid in the step 1 is 3: 1; the leaching temperature is 25 ℃; the leaching time was 24 hours.
3. The method for cleaning and extracting vanadium from titanium tetrachloride refined vanadium slag according to claim 1, wherein the volume ratio of the sodium hypochlorite to the vanadium-containing mother liquor in the step 2 is as follows: 1 to 2 in an arbitrary ratio of 1.
4. The method for cleanly extracting vanadium from titanium tetrachloride refined vanadium slag as claimed in claim 1, wherein NaOH is used for adjusting the pH value of the 5-valent vanadium solution in the step 3.
5. The method for cleanly extracting vanadium from titanium tetrachloride refined vanadium slag as claimed in claim 4, characterized in that in step 3, the pH value of a 5-valent vanadium solution is adjusted to 1 to 1.5 by NaOH, and the concentration of the 5-valent vanadium solution is controlled to be more than 20 g/L; the temperature is controlled between 25 degrees centigrade and 40 degrees centigrade.
6. The method for cleanly extracting vanadium from titanium tetrachloride refined vanadium slag according to claim 1, characterized in that Na is added in the step 42CO3The adding amount is 20 to 30 percent of the mass of the obtained red cake; solid-liquidThe ratio is 5:1, namely the ratio of the total mass of the red cake and the sodium carbonate to the water is 5: 1; the temperature of the secondary leaching is controlled between 25 ℃ and 100 ℃.
7. The method for cleanly extracting vanadium from the titanium tetrachloride refined vanadium slag according to claim 1, characterized in that in the step 5, the ammonium addition coefficient is any number from 1 to 2, K is m/cv, the vanadium precipitation temperature is 40-50 ℃, and the Ph of the vanadium precipitation solution is 4-6; k is the coefficient of ammonium addition, m is the mass of ammonium chloride, c is the mass concentration of vanadium in the leaching solution, and v is the volume of the leaching solution.
8. The method for cleanly extracting vanadium from titanium tetrachloride refined vanadium slag according to claim 1, characterized in that the washing times in the step 6 are 1 to 2 times, and the drying temperature is 550 to 600 ℃.
9. The method for cleanly extracting vanadium from titanium tetrachloride refined vanadium slag as claimed in claim 1, wherein the roasting temperature in the step 7 is controlled to be between 550 and 600 ℃, and the roasting environment is kept sufficient in oxygen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110889949.1A CN113737026A (en) | 2021-08-04 | 2021-08-04 | Method for cleanly extracting vanadium from titanium tetrachloride refined vanadium slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110889949.1A CN113737026A (en) | 2021-08-04 | 2021-08-04 | Method for cleanly extracting vanadium from titanium tetrachloride refined vanadium slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113737026A true CN113737026A (en) | 2021-12-03 |
Family
ID=78730010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110889949.1A Pending CN113737026A (en) | 2021-08-04 | 2021-08-04 | Method for cleanly extracting vanadium from titanium tetrachloride refined vanadium slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113737026A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1071079A (en) * | 1964-09-24 | 1967-06-07 | Alfred Gordon Evans Robiette | Process for the manufacture of vanadium oxide |
| GB8506660D0 (en) * | 1984-03-15 | 1985-04-17 | Intevep Sa | Leaching & recovering vanadium |
| CN101215005A (en) * | 2008-01-14 | 2008-07-09 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for producing vanadium pentoxide by utilizing vanadium slag |
| CN104609472A (en) * | 2015-02-17 | 2015-05-13 | 中信锦州金属股份有限公司 | Method for producing vanadium pentoxide from titanium tetrachloride refinement vanadium-removal slurry |
| US20170218479A1 (en) * | 2015-12-09 | 2017-08-03 | Institute Of Process Engineering, Chinese Academy Of Sciences | Method for converting and separating vanadium, titanium, and iron from vanadium-titanium-iron concentrate in one step |
| CA2954871A1 (en) * | 2017-01-12 | 2018-07-12 | Institute Of Process Engineering, Chinese Academy | Method for converting and separating vanadium, titanium, and iron from vanadium-titanium-iron concentrate |
| CN108754125A (en) * | 2018-08-21 | 2018-11-06 | 中南大学 | A kind of vanadium-containing material sodium roasting vanadium-extracting cleaning procedure |
| CN109022800A (en) * | 2018-08-31 | 2018-12-18 | 攀钢集团攀枝花钢铁研究院有限公司 | Titanium tetrachloride purification tailings ultrasonic wave added prepares high-purity V2O5Method |
-
2021
- 2021-08-04 CN CN202110889949.1A patent/CN113737026A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1071079A (en) * | 1964-09-24 | 1967-06-07 | Alfred Gordon Evans Robiette | Process for the manufacture of vanadium oxide |
| GB8506660D0 (en) * | 1984-03-15 | 1985-04-17 | Intevep Sa | Leaching & recovering vanadium |
| CN101215005A (en) * | 2008-01-14 | 2008-07-09 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for producing vanadium pentoxide by utilizing vanadium slag |
| CN104609472A (en) * | 2015-02-17 | 2015-05-13 | 中信锦州金属股份有限公司 | Method for producing vanadium pentoxide from titanium tetrachloride refinement vanadium-removal slurry |
| US20170218479A1 (en) * | 2015-12-09 | 2017-08-03 | Institute Of Process Engineering, Chinese Academy Of Sciences | Method for converting and separating vanadium, titanium, and iron from vanadium-titanium-iron concentrate in one step |
| CA2954871A1 (en) * | 2017-01-12 | 2018-07-12 | Institute Of Process Engineering, Chinese Academy | Method for converting and separating vanadium, titanium, and iron from vanadium-titanium-iron concentrate |
| CN108754125A (en) * | 2018-08-21 | 2018-11-06 | 中南大学 | A kind of vanadium-containing material sodium roasting vanadium-extracting cleaning procedure |
| CN109022800A (en) * | 2018-08-31 | 2018-12-18 | 攀钢集团攀枝花钢铁研究院有限公司 | Titanium tetrachloride purification tailings ultrasonic wave added prepares high-purity V2O5Method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104805302B (en) | A kind of method that vanadium and titanium are extracted from titanium slag containing vanadium | |
| CN105420488A (en) | Method for preprocessing wrapped uranium-molybdenum ores through oxidizing roasting | |
| CN101824554B (en) | Liquid alkali roasting decomposition extraction process of mixed rare earth concentrates | |
| CN103215463B (en) | Method for decomposing bastnaesite through calcification transformation-leaching | |
| CN103723765A (en) | Method for preparing titanium dioxide through sulfuric acid method | |
| CN106507815B (en) | A kind of method for improving uranium molybdenum ore leaching rate | |
| CN105087934B (en) | The recovery method of useless fluorescent powder middle rare earth metal | |
| CN101818250A (en) | Method for processing cobalt-copper-iron alloy | |
| CN106276820A (en) | A kind of be raw material production high purity tellurium with coarse tellurium powder technique | |
| CN101988154A (en) | New technology for preparing electrolytic manganese metal solution and recycling iron by reducing pyrolusite with iron scraps | |
| CN101397150A (en) | Method for extracting vanadium pentoxide from vanadium-containing rotary furnace steel slag | |
| CN114349048A (en) | Method for preparing high-purity vanadyl sulfate solution by recycling titanium tetrachloride refining tailings | |
| CN104876260A (en) | Method for preparing tin dioxide directly by using tin-electrolyzed anode mud | |
| CN106636615B (en) | The mica treatment process of lithium carbonate is prepared using lepidolite | |
| CN106586990B (en) | With the method for Wet-process Phosphoric Acid Production potassium dihydrogen phosphate | |
| CN104630485A (en) | Method for extracting vanadium from ferric vanadate mud | |
| CN113737026A (en) | Method for cleanly extracting vanadium from titanium tetrachloride refined vanadium slag | |
| CN113277483A (en) | Method for separating and recovering tellurium and selenium materials | |
| CN111270092B (en) | Method for decomposing mixed rare earth ore | |
| CN111057875B (en) | Method for separating vanadium and chromium from solution by using microemulsion | |
| CN114672668A (en) | Method for preparing vanadium pentoxide by reducing precipitated vanadium, vanadium pentoxide and application | |
| CN107746965A (en) | A kind of method of germanium vacuum distillation slag recovery indium germanium | |
| CN114606388A (en) | Method for leaching arsenic-containing copper smelting smoke and synchronously removing arsenic | |
| CN101824553A (en) | Liquid alkali high-temperature roasting decomposition process of caustic soda liquid of mixed rare earth concentrates | |
| US20240067522A1 (en) | Resource utilization method of crude sodium sulfate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211203 |