CN106884089A - Method for recovering vanadium from non-blast furnace titanium slag - Google Patents
Method for recovering vanadium from non-blast furnace titanium slag Download PDFInfo
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- CN106884089A CN106884089A CN201510938906.2A CN201510938906A CN106884089A CN 106884089 A CN106884089 A CN 106884089A CN 201510938906 A CN201510938906 A CN 201510938906A CN 106884089 A CN106884089 A CN 106884089A
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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
- 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
- C22B7/007—Wet processes by acid leaching
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/04—Oxides; Hydroxides
- C01G23/047—Titanium dioxide
- C01G23/053—Producing by wet processes, e.g. hydrolysing titanium salts
-
- 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
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- 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 discloses a method for recovering vanadium from non-blast furnace titanium slag, and belongs to the technical field of vanadium resource recovery. The invention takes vanadium-titanium-iron ore concentrate non-blast furnace titanium slag as a raw material, adopts waste acid in the titanium dioxide production process to pre-leach the non-blast furnace titanium slag, and realizes effective control of vanadium and titanium behaviors in the pre-soaking process: strengthening the leaching of vanadium in the magnesium-aluminum silicate and inhibiting TiO in non-blast furnace titanium slag2Dissolution and TiO in titanium dioxide waste acid2The stability of vanadium in the waste acid is kept. The pre-impregnated titanium slag is used for producing titanium dioxide by a conventional sulfuric acid method; extracting after the reduction of the pre-leaching solutionThe vanadium-containing solution is obtained by the back extraction process to prepare the vanadium product. The method deeply excavates the mineral characteristics of non-blast furnace titanium slag, closely combines the traditional sulfuric acid process titanium dioxide production process, comprehensively recovers vanadium on the basis of recycling of titanium dioxide waste acid, further realizes the open circuit and purification of impurity vanadium in the titanium dioxide process flow, has simple and easy process, high vanadium recovery rate, is beneficial to producing high-quality titanium dioxide, and has better popularization and application prospects.
Description
Technical field
The invention belongs to vanadium resource recovery technology field, it is related to a kind of technique that vanadium is reclaimed from slag, and in particular to a kind of vanadium titanium magnetic
Using the new method for being reduced directly titanium slag recovery vanadium in the non-blast furnace process flow of iron ore.
Background technology
The application of vanadium is quite varied, is all in industrial circles such as steel, non-ferrous metal, chemical industry, alloy, superconductor, automobiles
Indispensable important element.A certain amount of vanadium is added in steel, non-ferrous metal and alloy, thus it is possible to vary its microstructure,
Wearability, the red hardness of steel are greatly improved, lightening material weight increases the service life；Vanadium catalyst is manufactured in chemical engineering industry,
Cheap, stable performance, anti-poisoning performance is strong；Meanwhile, the colorful color of vfanadium compound can be used to make paints, paint
Deng；In superconductor, vanadium has the characteristic of suiperconducting transition critical-temperature higher with silicon, gallium compound.Therefore, navajoite money
The comprehensive development and utilization in source has very important strategic importance and industry demand.
Panxi Area, Sichuan Province is the most abundant area of China's navajoite resource, V2O5Reserves account for the 58.4% of the whole nation.Climb western vanadium resource master
Preservation is wanted in vanadium titano-magnetite, the mutual symbiosis of iron, vanadium, titanium, by the exploitation of more than 40 years, has formd and be with iron at present
Main, the technical system of synthetical recovery vanadium titanium, Panxi Diqu has turned into the important vanadium resource base and vanadium production base of China.It is existing
Development System, vanadium titano-magnetite ore dressing obtains sefstromite concentrate, obtains vanadium-bearing hot metal after blast furnace ironmaking, current vanadium it is main from
Reclaimed in vanadium-bearing hot metal, about 70% vanadium enters vanadium-bearing hot metal in sefstromite concentrate.30% vanadium is entered into blast furnace ironmaking slag,
It is that a kind of serious vanadium resource is wasted.Vanadium, titanium are made a low multiple use, it has also become blast furnace ironmaking flow is difficult to the problem for overcoming.
In recent years, in order to improve the level of comprehensive utilization of sefstromite concentrate, around sefstromite concentrate direct-reduction technique exploitation I
State has carried out substantial amounts of work, develops the coal-based direct reductions such as rotary hearth furnace, tunnel cave, rotary kiln, multitube shaft furnace, or car
The gas base directly reducing technology such as bottom stove.The material discharged after direct-reduction selects isolated reduced iron and new through molten point of electric furnace or mill
Titanium slag --- non-blast furnace titaniferous slag.Direct-reduction technique because need not with ore deposit directly smelt vanadium in sefstromite concentrate, therefore non-blast furnace titaniferous slag,
Titanium grade is significantly larger than vanadium, the grade of titanium in blast furnace titaniferous slag, therefore for the synthetical recovery of vanadium, titanium is laid a good foundation.
For non-blast furnace titaniferous slag, containing V2O50.1~0.8%, it is consistent with magnalium behavior.Influenceed by non-blast furnace titaniferous slag forming process,
V2O5It is mainly distributed on two kinds of magnesium, aluminium thing phase：10~30% V2O5It is distributed in zeopan, 70~90%V2O5Point
Cloth is in magnesium aluminate spinel.Cost-effective mode there is no to realize V in non-blast furnace titaniferous slag magnalium mineral at present2O5Recovery：One
The conventional acidleach of aspect can not realize V2O5Effective dissolution, patent CN104805302A discloses a kind of from titanium slag containing vanadium
The middle method for extracting vanadium and titanium, it is necessary to concentrated hydrochloric acid could realize the leaching of vanadium in high temperature, high pressure and under conditions of oxidant,
Industrial realization difficulty is very big, is not preferable vanadium recovery process.On the other hand non-blast furnace titaniferous slag is used as a kind of new containing vanadium, titanium
Material, current domestic relevant research unit explores the report that sulfuric acid process reclaims titanium in non-blast furnace titaniferous slag, for the resource of vanadium
Recovery belongs to blank；In addition sulfuric acid process treatment ilmenite, the research of acid dissolution slag, also has no the report that vanadium is reclaimed.Vanadium conduct simultaneously
The maximum impurity element of titanium white quality is influenceed in sulfate process titanium dioxide production process, with spent acid circulation constantly accumulation, titanium white purity is reduced,
Influence titanium white quality.
In sum, the important navajoite resource of Panxi Diqu vanadium titano-magnetite Zhong Fanshi China, but due to current blast furnace smelting technology
The problem of system, causes the resource utilization of vanadium relatively low.Substantial amounts of research is carried out in vanadium titano-magnetite synthetical recovery field in recent years
Work, including direct reduction of V-Ti magnetite technology etc., center of gravity is placed on the synthetical recovery aspect of iron, titanium, for the synthesis of vanadium
It is limited using exploring, the breakthrough of essence is not yet obtained, vanadium is returned during still can not effectively solving current vanadium titano-magnetite commercial development
The low problem of yield.
The content of the invention
It is an object of the invention to provide a kind of method that vanadium is reclaimed from non-blast furnace titaniferous slag, it is related to a kind of non-blast furnace of sefstromite concentrate ore deposit
Using the new technological process for being reduced directly titanium slag recovery vanadium in smelting flow, belong to vanadium resource recycling field.The present invention is with sefstromite concentrate
Non- blast furnace titaniferous slag is raw material, and pre- leaching is carried out to non-blast furnace titaniferous slag using the spent acid of Producing Titanium Dioxide process, is realized by prepreg process
Vanadium, effective control of titanium behavior：TiO in the leaching of vanadium, the non-blast furnace titaniferous slag of suppression in reinforcing zeopan2Dissolution, control
TiO in titanium white waste acid2Hydrolysis, keep spent acid in vanadium stabilization.Preimpregnation titanium slag is cured with concentrated sulfuric acid acidolysis again, then through water logging,
The operation production titanium white such as concentration, hydrolysis, roasting；Using extraction after prepreg solution reduction -- stripping process is obtained and contains vanadium solution, enters one
Step ammonium is heavy, calcining prepares vanadic anhydride.The present invention deeply excavates the mineralogical character of non-blast furnace titaniferous slag, traditional sulfuric acid of combining closely
Method produces the production technology of titanium white, and the synthetical recovery of vanadium is realized on the basis of titanium white waste acid is recycled, and furthermore achieved that titanium
The open circuit of impurity vanadium, purification in white technological process.The present invention realizes and vanadium is reclaimed from non-blast furnace titaniferous slag, and process is simple is easy-to-use,
Vanadium recovery is high, while be conducive to producing high quality titanium white, with preferable popularizing application prospect.The purpose of the present invention is to pass through
What following technical scheme was realized.
A kind of method that vanadium is reclaimed from non-blast furnace titaniferous slag, with non-blast furnace titaniferous slag as raw material, comprises the following steps：
(1) it is pre- to leach：After by the non-blast furnace process gained titanium slag fine grinding of sefstromite concentrate, mixing with a certain amount of titanium white waste acid is carried out
Leach, then filter, obtain presoaking titanium slag and the low sour prepreg solution containing aluminium, vanadium；
(2) Producing Titanium Dioxide：By step (1) obtain preimpregnation titanium slag through acidolysis, leaching, concentration, hydrolysis, filtering, washing,
The known sulfate process titanium dioxide production technology production titanium white such as calcining, iron is removed without freezing and crystallizing, and titanium hydrolysis raffinate is titanium white waste acid,
Titanium white waste acid return to step (1) is recycled；
(3) ferric iron back：By step (1) obtain containing the Fe in aluminium, the low sour prepreg solution of vanadium3+It is reduced to Fe2+, obtain
Liquid after to reduction；
(4) extraction vanadium extraction：Liquid is through extraction after the reduction that step (3) is obtained -- and after back extraction, obtain and contain vanadium solution and raffinate,
Ammonium vanadate or vanadic anhydride are prepared into containing vanadium solution, raffinate return to step (2) is used as leaching water.
Further, described non-blast furnace titaniferous slag is with sefstromite concentrate as raw material, using reducing agent in the reduction furnace of non-blast furnace
Direct-reduction gained reduzate is through titanium slag obtained from slag sluicing system；Wherein described reducing agent is coal, Jiao, coal gas, natural gas
In one or more of mixture, the reduction furnace is rotary hearth furnace, continuous tunnel furnace, tube furnace, rotary kiln, shaft furnace, car-bottom furnace
Or one kind of microwave ore deposit stove.
Further, the slag sluicing system of described sefstromite concentrate direct-reduction gained reduzate, is using electricity by reduzate
Stove high temperature melting isolates metallic iron and non-blast furnace titaniferous slag, or by gained reduzate through broken, ore dressing physical separation mode point
Separate out metallic iron and non-blast furnace titaniferous slag；It is preferred that gained reduzate is isolated into metallic iron using electric furnace high-temperature is molten, slag is through water quenching
Obtain non-blast furnace titaniferous slag.
Further, titanium slag fine grinding described in step (1), is ratio >=90% of the particle that titanium slag is finely ground to less than 74 μm；
Preferably, titanium slag is finely ground to ratio >=90% of less than 45 μm of particle.
In the present invention unless otherwise indicated beyond, ratio, concentration and percentage are on the basis of quality.
Further, mixing the condition for being leached with a certain amount of titanium white waste acid after titanium slag fine grinding in step (1) is：Leach solid
Liquor ratio (mass volume ratio) is 1:10~1:2kg/L, 80 DEG C~200 DEG C of extraction temperature, 2~8h of extraction time, 1~5atm of partial pressure of oxygen；
It is preferred that solid-to-liquid ratio (mass volume ratio) is 1:5~1:3kg/L；130 DEG C~150 DEG C of extraction temperature, extraction time 3h, partial pressure of oxygen
3atm。
Further, leaching process can be added without leaching agent in step (1), it is also possible to add fluoride to make leaching agent, described
Fluoride be sodium fluoride, calcirm-fluoride, potassium fluoride one of which or several mixtures, additional proportion is non-blast furnace titaniferous slag
1~30%.
Further, the h 2 so 4 concentration described in step (1) in titanium white waste acid is 15%~25%, it is preferable that hydrolysis analysis
The raffinate gone out after titanium is through being concentrated by evaporation to h 2 so 4 concentration 25%~35% for leaching.
Further, step (3) Fe3+Reduction reducing agent used for the one kind in iron powder, sodium sulfite, sodium thiosulfate or
It is several, the preferred sodium sulfite of reducing agent.
Further, the extractant used by step (4) is the kerosene mixed solvent of P204 and TBP, or P507 and TBP
Kerosene mixed extractant；Back washing agent is H2SO4Or HCl；The kerosene mixed solvent of extractant preferred P204 and TBP,
The preferred H of back washing agent2SO4。
It is provided by the present invention it is a kind of vanadium is reclaimed from non-blast furnace titaniferous slag the advantage of method be：
(1) non-blast furnace titaniferous slag mineralogical character is deeply excavated, titanium is neutralized in prepreg process using non-blast furnace titaniferous slag neutral and alkali oxide
White spent acid, had both solved the treatment of titanium white waste acid and had recycled problem, and be V in titanium white waste acid2O5Effective recovery establish base
Plinth.The high efficiente callback for effectively realizing vanadium in sefstromite concentrate iron metallurgical slag of the invention, is the synthesis of China's v-ti magnetite ore resources
Recovery opens new thinking.
(2) effective control of vanadium, titanium behavior is realized by prepreg process：The leaching of vanadium, suppresses not high in reinforcing zeopan
TiO in stove titanium slag2Dissolution, control titanium white waste acid in TiO2Hydrolysis, keep spent acid in vanadium stabilization.
(3) for V2O5Complicated mineral composition, by preimpregnation, acidolysis substep separate different minerals in V2O5, it is effectively real
V in non-blast furnace titaniferous slag is showed2O5Efficient dissolution, V greatly improved2O5The rate of recovery.Preimpregnation separates V in zeopan2O5,
Total amount 10~30% is accounted for, the V for entering black titanium liquid by acidolysis is reduced2O5, reduce V2O5Influence to metatitanic acid quality；Acidolysis
V in dissolving magnesium aluminate spinel2O5, total amount 70~90% is accounted for, realize reclaiming in prepreg process, it is to avoid conventional sulfuric acid method titanium white
V caused by the circulation of flow waste acid concentration2O5It is enriched with and to the influence to metatitanic acid quality.
(4) it is tightly combined with non-blast furnace titaniferous slag Production By Sulfuric Acid Process titanium white technique, has effectively eliminated the elements such as vanadium, iron, aluminium to titanium
The influence of white product quality, for production high quality titanium white is laid a good foundation.
Brief description of the drawings
Fig. 1 is a kind of principle flow chart of method that vanadium is reclaimed from non-blast furnace titaniferous slag provided by the present invention.
Specific embodiment
In order to be best understood from the present invention, with reference to specific embodiment, the present invention is further elaborated, quotes embodiment only
For illustrating the present invention, rather than limitation the scope of the present invention.
The key component content that chemical analysis obtains certain direct-reduction titanium slag is shown in Table 1.
Table 1 certain direct-reduction titanium slag constituent content
| Element | Fe | CaO | MgO | ||||
| Content % | 50.08 | 2.34 | 5.33 | 10.06 | 12.15 | 14.05 | 0.62 |
Embodiment 1
Certain direct-reduction titanium slag is taken, its key component is shown in Table 1, titanium slag is finely ground into 45 μm (325 mesh sieves) particle below
Ratio >=90%；Finely ground titanium slag mixes with a certain amount of titanium white waste acid and is leached, and leaches solid-to-liquid ratio (mass volume ratio) and is
1:5kg/L, 130 DEG C of extraction temperature, extraction time 3h, partial pressure of oxygen 3atm；The h 2 so 4 concentration of leaching process is 20%,；
The pre- phase analysis for obtaining send Producing Titanium Dioxide technique productions titanium white, obtain the return of titanium white waste liquid and use, and the leachate for obtaining will using iron powder
Fe3+Reduction；Extracted using the kerosene mixed solvent of P204 and TBP, back washing agent is H2SO4；Obtain being prepared containing vanadium solution
Into ammonium vanadate or vanadic anhydride.The rate of recovery of whole piece flow vanadium is more than 90%, the purity of vanadic anhydride>99%, wherein
Fe<0.05%th, Ca<0.05%th, Al<0.2%th, Si<0.05%.
Embodiment 2
Certain direct-reduction titanium slag is taken, its key component is shown in Table 1, titanium slag is finely ground into 45 μm (325 mesh sieves) particle below
Ratio >=90%；Finely ground titanium slag mixes with a certain amount of titanium white waste acid and is leached, and leaches solid-to-liquid ratio (mass volume ratio) and is
1:4kg/L, 140 DEG C of extraction temperature, extraction time 3h, partial pressure of oxygen 3atm；The h 2 so 4 concentration of leaching process is 22%,
Leaching agent is 20% calcirm-fluoride；The pre- phase analysis for obtaining send Producing Titanium Dioxide technique productions titanium white, obtain the return of titanium white waste liquid and use, and obtain
The leachate for arriving utilizes sodium sulfite by Fe3+Reduction；Extracted using the kerosene mixed solvent of P507 and TBP, back washing agent
It is HCl；Obtain being prepared into ammonium vanadate or vanadic anhydride containing vanadium solution.The rate of recovery of whole piece flow vanadium is more than 90%, five oxidations
The purity of two vanadium>99%, wherein Fe<0.05%th, Ca<0.05%th, Al<0.2%th, Si<0.05%.
Embodiment 3
Certain direct-reduction titanium slag is taken, its key component is shown in Table 1, titanium slag is finely ground into 45 μm (325 mesh sieves) particle below
Ratio >=90%；Finely ground titanium slag mixes with a certain amount of titanium white waste acid and is leached, and leaches solid-to-liquid ratio (mass volume ratio) and is
1:3kg/L, 150 DEG C of extraction temperature, extraction time 3h, partial pressure of oxygen 3atm；The h 2 so 4 concentration of leaching process is 25%；
To pre- phase analysis send Producing Titanium Dioxide technique productions titanium white, obtain titanium white waste liquid return use, the leachate for obtaining utilizes sodium sulfite
By Fe3+Reduction；Extracted using the kerosene mixed solvent of P204 and TBP, back washing agent is H2SO4；Obtain containing vanadium solution
It is prepared into ammonium vanadate or vanadic anhydride.The rate of recovery of whole piece flow vanadium is more than 90%, the purity of vanadic anhydride>99%, wherein
Fe<0.05%th, Ca<0.05%th, Al<0.2%th, Si<0.05%.
Claims (9)
1. it is a kind of from non-blast furnace titaniferous slag reclaim vanadium method, with non-blast furnace titaniferous slag as raw material, it is characterised in that comprise the following steps：
(1) it is pre- to leach：After by the non-blast furnace process gained titanium slag fine grinding of sefstromite concentrate, mix with a certain amount of titanium white waste acid and leached, then
Filtering, obtains presoaking titanium slag and the low sour prepreg solution containing aluminium, vanadium；
(2) Producing Titanium Dioxide：Step (1) is obtained into preimpregnation titanium slag and produces titanium white through conventional sulfate process titanium dioxide production technology, iron is removed without freezing and crystallizing,
Titanium hydrolysis raffinate is titanium white waste acid, and titanium white waste acid return to step (1) is recycled；
(3) ferric iron back：By step (1) obtain containing the Fe in aluminium, the low sour prepreg solution of vanadium3+It is reduced to Fe2+, liquid after being reduced；
(4) extraction vanadium extraction：Liquid is through extraction after the reduction that step (3) is obtained -- and after back extraction, obtain and contain vanadium solution and raffinate, containing vanadium solution system
For into ammonium vanadate or vanadic anhydride, raffinate return to step (2) is used as leaching water.
2. method according to claim 1, it is characterised in that described non-blast furnace titaniferous slag is with sefstromite concentrate as raw material, using reducing agent
Reduzate obtained by direct-reduction is through titanium slag obtained from slag sluicing system in the reduction furnace of non-blast furnace；Wherein described reducing agent be coal, Jiao, coal gas,
One or more in natural gas of mixture, the reduction furnace is rotary hearth furnace, continuous tunnel furnace, tube furnace, rotary kiln, shaft furnace, car-bottom furnace or microwave
One kind of ore deposit stove.
3. method according to claim 2, it is characterised in that the slag sluicing system of described sefstromite concentrate direct-reduction gained reduzate,
It is that reduzate is isolated into metallic iron and non-blast furnace titaniferous slag using electric furnace high-temperature is molten, or by gained reduzate through broken, ore dressing physical separation
Mode isolates metallic iron and non-blast furnace titaniferous slag；It is preferred that gained reduzate is isolated into metallic iron using electric furnace high-temperature is molten, slag obtains non-through water quenching
Blast furnace titaniferous slag.
4. method according to claim 1, it is characterised in that titanium slag fine grinding described in step (1), be by titanium slag be finely ground to 74 μm with
Under particle ratio >=90%；Preferably, titanium slag is finely ground to ratio >=90% of less than 45 μm of particle.
5. method according to claim 1, it is characterised in that mixing with a certain amount of titanium white waste acid after titanium slag fine grinding in step (1) is carried out
The condition of leaching is：It is 1 to leach solid-to-liquid ratio:10~1:2kg/L, 80 DEG C~200 DEG C of extraction temperature, 2~8h of extraction time, 1~5atm of partial pressure of oxygen；It is excellent
It is 1 to select solid-to-liquid ratio:5~1:3kg/L；130 DEG C~150 DEG C of extraction temperature, extraction time 3h, partial pressure of oxygen 3atm.
6. method according to claim 1, it is characterised in that leaching process adds fluoride to make leaching agent, described fluorine in step (1)
Compound is sodium fluoride, calcirm-fluoride, potassium fluoride one of which or several mixtures, and additional proportion is the 1~30% of non-blast furnace titaniferous slag.
7. method according to claim 1, it is characterised in that the h 2 so 4 concentration described in step (1) in titanium white waste acid is 15%~25%,
Be concentrated by evaporation to h 2 so 4 concentration be 25%~35% after leach.
8. method according to claim 1, it is characterised in that step (3) Fe3+Reduction reducing agent used is iron powder, sodium sulfite,
One or more in sodium thiosulfate, the preferred sodium sulfite of reducing agent.
9. method according to claim 1, it is characterised in that extractant used by step (4) is molten for the kerosene mixing of P204 and TBP
Agent, or P507 and TBP kerosene mixed extractant；Back washing agent is H2SO4Or HCl；The kerosene of extractant preferred P204 and TBP is mixed
Bonding solvent, the preferred H of back washing agent2SO4。
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Cited By (6)
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| CN110468285A (en) * | 2019-09-11 | 2019-11-19 | 中南大学 | A kind of Ti-containing slag produces TiO2The method of powder |
| CN112320842A (en) * | 2020-11-13 | 2021-02-05 | 昆明理工大学 | Method for acidolysis of titanium slag |
| CN112830694A (en) * | 2021-01-15 | 2021-05-25 | 攀枝花恒通钛业有限公司 | Method for comprehensively treating vanadium-containing furnace slag and titanium dioxide waste acid |
| CN113025827A (en) * | 2021-03-05 | 2021-06-25 | 攀枝花学院 | Method for recovering vanadium from vanadium-containing waste |
| CN113337709A (en) * | 2021-06-01 | 2021-09-03 | 四川省有色矿冶科技有限公司 | Method for reducing titanium content in vanadium-titanium magnetite concentrate |
| CN115974123A (en) * | 2022-12-09 | 2023-04-18 | 四川大学 | Method for recycling sulfuric acid and valuable metals in titanium white waste acid |
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| CN113337709A (en) * | 2021-06-01 | 2021-09-03 | 四川省有色矿冶科技有限公司 | Method for reducing titanium content in vanadium-titanium magnetite concentrate |
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