CN103131867A - Method for extracting vanadium from vanadium containing slag - Google Patents
Method for extracting vanadium from vanadium containing slag Download PDFInfo
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- CN103131867A CN103131867A CN201310077492XA CN201310077492A CN103131867A CN 103131867 A CN103131867 A CN 103131867A CN 201310077492X A CN201310077492X A CN 201310077492XA CN 201310077492 A CN201310077492 A CN 201310077492A CN 103131867 A CN103131867 A CN 103131867A
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- 229910052720 vanadium Inorganic materials 0.000 title claims abstract description 151
- 238000000034 method Methods 0.000 title claims abstract description 106
- 239000002893 slag Substances 0.000 title claims abstract description 96
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 title claims abstract 22
- 238000002386 leaching Methods 0.000 claims abstract description 37
- 239000002253 acid Substances 0.000 claims abstract description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 92
- 238000000605 extraction Methods 0.000 claims description 83
- 239000007788 liquid Substances 0.000 claims description 76
- 229910000831 Steel Inorganic materials 0.000 claims description 51
- 239000010959 steel Substances 0.000 claims description 50
- 229910052742 iron Inorganic materials 0.000 claims description 46
- 239000012074 organic phase Substances 0.000 claims description 44
- 230000005484 gravity Effects 0.000 claims description 37
- 238000007654 immersion Methods 0.000 claims description 37
- 239000012141 concentrate Substances 0.000 claims description 32
- WQEVDHBJGNOKKO-UHFFFAOYSA-K vanadic acid Chemical compound O[V](O)(O)=O WQEVDHBJGNOKKO-UHFFFAOYSA-K 0.000 claims description 30
- 239000012535 impurity Substances 0.000 claims description 26
- 238000001556 precipitation Methods 0.000 claims description 22
- 239000000047 product Substances 0.000 claims description 22
- 238000000926 separation method Methods 0.000 claims description 17
- 150000003863 ammonium salts Chemical class 0.000 claims description 16
- 238000007885 magnetic separation Methods 0.000 claims description 14
- 239000000243 solution Substances 0.000 claims description 13
- 238000005406 washing Methods 0.000 claims description 13
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 12
- 230000003647 oxidation Effects 0.000 claims description 12
- 238000007254 oxidation reaction Methods 0.000 claims description 12
- 238000000227 grinding Methods 0.000 claims description 11
- 239000011259 mixed solution Substances 0.000 claims description 10
- 239000001117 sulphuric acid Substances 0.000 claims description 10
- 235000011149 sulphuric acid Nutrition 0.000 claims description 10
- 239000006228 supernatant Substances 0.000 claims description 10
- 238000001354 calcination Methods 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 239000002699 waste material Substances 0.000 claims description 7
- 238000013467 fragmentation Methods 0.000 claims description 6
- 238000006062 fragmentation reaction Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000013019 agitation Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000009628 steelmaking Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 229910001456 vanadium ion Inorganic materials 0.000 claims description 5
- GJEAMHAFPYZYDE-UHFFFAOYSA-N [C].[S] Chemical class [C].[S] GJEAMHAFPYZYDE-UHFFFAOYSA-N 0.000 claims description 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 3
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical group [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 2
- 235000011152 sodium sulphate Nutrition 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 10
- 238000000746 purification Methods 0.000 abstract description 4
- 238000009854 hydrometallurgy Methods 0.000 abstract description 3
- 239000002910 solid waste Substances 0.000 abstract description 3
- 238000000638 solvent extraction Methods 0.000 abstract description 3
- 235000021110 pickles Nutrition 0.000 abstract 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 129
- 238000002203 pretreatment Methods 0.000 description 15
- 239000000292 calcium oxide Substances 0.000 description 11
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 11
- 230000011218 segmentation Effects 0.000 description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 description 8
- 239000011707 mineral Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 229910021534 tricalcium silicate Inorganic materials 0.000 description 6
- 235000019976 tricalcium silicate Nutrition 0.000 description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 5
- 239000011575 calcium Substances 0.000 description 5
- 229910052791 calcium Inorganic materials 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000011160 research Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 238000005554 pickling Methods 0.000 description 4
- 239000011734 sodium Substances 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
- 238000009825 accumulation Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000001627 detrimental effect Effects 0.000 description 2
- WBZKQQHYRPRKNJ-UHFFFAOYSA-L disulfite Chemical compound [O-]S(=O)S([O-])(=O)=O WBZKQQHYRPRKNJ-UHFFFAOYSA-L 0.000 description 2
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- XTAZYLNFDRKIHJ-UHFFFAOYSA-N n,n-dioctyloctan-1-amine Chemical compound CCCCCCCCN(CCCCCCCC)CCCCCCCC XTAZYLNFDRKIHJ-UHFFFAOYSA-N 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 229910001784 vanadium mineral Inorganic materials 0.000 description 2
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical compound CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 239000001166 ammonium sulphate Substances 0.000 description 1
- 239000003637 basic solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- AOWKSNWVBZGMTJ-UHFFFAOYSA-N calcium titanate Chemical compound [Ca+2].[O-][Ti]([O-])=O AOWKSNWVBZGMTJ-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000021321 essential mineral Nutrition 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- -1 iron ions Chemical class 0.000 description 1
- MHKWSJBPFXBFMX-UHFFFAOYSA-N iron magnesium Chemical compound [Mg].[Fe] MHKWSJBPFXBFMX-UHFFFAOYSA-N 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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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
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Abstract
The invention relates to a method for extracting vanadium from vanadium containing slag and belongs to the field of beneficiation, hydrometallurgy and comprehensive utilization of resources. The method mainly comprises the following steps of: beneficiation pretreatment, roasting-free selective sectional acid leaching at normal temperature and pressure and purification and enrichment of vanadium containing pickle liquor. A novel process of extracting vanadium by roasting-free acid leaching of vanadium containing slag at normal temperature and pressure is established by the method which scientifically integrates single steps of beneficiation pretreatment, roasting-free selective sectional acid leaching at normal temperature and pressure and solvent extraction, so that the total recovery rate of vanadium is over 80%. Compared with conventional process in which the total recovery yield for extracting vanadium from vanadium solid waste is less than 70%, the novel process is greatly enhanced in vanadium extracting indexes.
Description
Technical field
The present invention relates to a kind of method of v-bearing steel slag vanadium extraction, belong to ore dressing, hydrometallurgy, comprehensive utilization of resources field, specifically the v-bearing steel slag not novel process of baking acid immersion vanadium extraction, i.e. " under v-bearing steel slag ore dressing pretreatment-normal temperature and pressure, the segmentation of not roasting selectivity is acid-leaching vanadium-extracted " under a kind of normal temperature and pressure.
Background technology
V-bearing steel slag results from the steelmaking process of vanadium-bearing hot metal, and following characteristics is arranged: one, and it is generally waste resource, measures large valency low; Two, calcium and iron level are high, content of vanadium is low; Three, it is more complex that the distribution of vanadium contains vanadium minerals than other, disperse, tiny, disperse in multi mineral mutually in.Belonged to utmost point refractory ore this not only the dispersion but also tiny people's dressing, is difficult to direct Mineral separation.
Vanadium extraction mainly contains two classpaths from v-bearing steel slag.The one, slag is carried out pyrometallurgical smelting, produce vanadium-rich slag, more further vanadium extraction.This method easily produces the circulation enrichment of phosphorus in molten iron, increases the weight of to make steel the dephosphorization task.Russia iron and steel affiliated company of Nizhni Tagil benefits our pursuits to this method, but has no successfully report.Climb steel and carried out the test of mineral hot furnace melting v-bearing steel slag since the eighties in last century, obtained success, but will get through flow process fully, still need do extensive work.The 2nd, as the direct vanadium extraction of raw material, this generally needs the process through hydrometallurgy with slag.Traditional wet method vanadium extraction mostly is the technique of sodium roasting, but this technique pollution is heavy, the rate of recovery is low, and is unsuitable for the slag vanadium extraction.Researcher also and sodium roasting-carbonating leaching process for extracting vanadium direct acid-leaching vanadium-extracted to not roasting of v-bearing steel slag carried out research, sodium roasting-carbonating extract technology has been got through whole process, the vanadium total yield is 55%～60%, but this technique material consumption amount is large, production cost is high, is only applicable to the higher raw material of grade; Though the direct process for extracting vanadium by acid leaching of not roasting of slag has the high advantage of leaching yield, acid consumption is too large, high cost, and not further research after exploratory experiment, this technique is not yet got through.Add, it is the key of slag vanadium extraction that vanadium, iron separate, and not roasting is directly acid-leaching vanadium-extracted, and a large amount of iron ions also can enter leach liquor together with vanadium, cause leach liquor to be difficult to purify, and have a strong impact on subsequent technique.Though existing iron purification method is many, these methods are mainly for solution, have but ignored source that from solution iron contamination produces and have namely leached operation and come deironing.If leaching stage realizes that vanadium, iron separate, can have more advantage at aspects such as purification and impurity removals, its process application has a extensive future.
Also have that research is devoted to that blank roasting-alkali soaks, oxygen presses to leach etc. and pollutes and improve transformation efficiency to reduce roasting, but alkali soaks that cost is high, index is undesirable, and how the acidleach of oxygen pressure realizes that industrial production is still waiting further research.Also occurred some new technologies in nearly more than 30 years, separated out etc. as in-pulp electrolysis, Microorganism Leaching, selectivity, its principle and method all have general applicability, part and have been used for the research of slag vanadium extraction, but technology is still immature, and many places are in the laboratory study stage.
For the ore dressing pretreatment of v-bearing steel slag, at present also without ripe technique.Based on the idea of " v-bearing steel slag is difficult to direct Mineral separation ", existing technique often at first forecloses " technique of preparing ", hardly realizes that the vanadium extraction technology is a large integral body, and the unit that much has little significance raises that whole meaning is just large altogether.Moreover the vanadium extraction cost is high now, energy consumption is large, and topmost reason or the vanadium grade is too low is if can have important practical significance undoubtedly by the vanadium grade that preliminary ore dressing improves in slag slightly.
In a word, though existing process for extracting vanadium method is many, ubiquity pollutes the shortcomings such as heavy, that the rate of recovery is low, and is difficult to adapt to the characteristics of v-bearing steel slag, applies being restricted.
Summary of the invention
For solving existing more existing problems of process for extracting vanadium method, as pollute heavily, the rate of recovery is low, uncomfortable
Be difficult to high efficiency separation, ore dressing pretreatment without maturation process etc. in v-bearing steel slag characteristics, vanadium and iron, the invention provides a kind of method of v-bearing steel slag vanadium extraction, it is the Novel process for extracting vanadium of clean and effective, novel process is selecting smelting combination technique, fully for the characteristics of v-bearing steel slag, cancelled calcining process, clean environment firendly, and integrated by the science of single operation, and the vanadium extraction index significantly promotes.
The object of the present invention is achieved like this, and the method for described v-bearing steel slag vanadium extraction mainly comprises ore dressing
Not roasting selectivity segmentation acidleach under pre-treatment, normal temperature and pressure, the purification that contains the vanadic acid immersion liquid and the large step of enrichment three, concrete steps comprise as follows:
(1) will carry out low intensity magnetic separation after v-bearing steel slag fragmentation, ore grinding under the condition that according to common process in magneticstrength is 0.08T～0.25T, the magnetic substance that obtains is the Armco magnetic iron concentrate, all the other are magnetic tailing, then the Armco magnetic iron concentrate is added water and be adjusted to pulp density 15～30wt%, carry out gravity treatment according to common process under the condition of stroke 6～14mm, jig frequency 280～440r/min, the heavy material that obtains is gravity concentrate, and the material that proportion is little is gravity tailings;
V-bearing steel slag is broken, ore grinding to the fineness that meets (greater than〉the 55%-200 order gets final product) after carry out ore dressing and locate in advance
Reason.Ore dressing pretreatment is (being low intensity magnetic separation and gravity treatment) in two steps, consider that magnetic plant is larger than gravitational separation equipment processing power, and first select the density variation that can increase different minerals after magnetic mineral, and be conducive to improve and select the vanadium decalcification effect, therefore the pretreatment mode by gravity treatment after first low intensity magnetic separation carries out.The magnetic such as the metallic iron in slag, Armco magnetic iron are better, enter the low intensity magnetic separation concentrate and obtain iron ore concentrate, contain vanadium minerals magnetic very weak, reside in the low intensity magnetic separation mine tailing.
By the low intensity magnetic separation pre-treatment, about 20% iron in the recyclable v-bearing steel slag of iron ore concentrate, thus reducing the accumulation of iron in follow-up leach liquor, the low intensity magnetic separation mine tailing that contains vanadium enters the gravity treatment pretreatment process.
According to the difference of magnetic between different minerals etc., first carrying out ore dressing pretreatment mode one is low intensity magnetic separation, and magneticstrength is 0.08T～0.25T, and purpose is the loss of reclaiming iron as far as possible and reducing vanadium.By pretreatment mode one, can obtain iron ore concentrate and contain the magnetic tailing of vanadium, about 20% iron in the recyclable slag of concentrate, thus reduce the accumulation of iron in follow-up leach liquor, contain the vanadium mine tailing and enter pretreatment mode two; Process mineralogy studies show that, v-bearing steel slag mainly is comprised of tricalcium silicate, calcium titanium oxide, iron magnesium phase, f-CaO, metallic iron etc.Wherein, f-CaO does not contain vanadium, tricalcium silicate vanadiumcontent lower than slag vanadium grade, and f-CaO, tricalcium silicate proportion are less, therefore, can adopt gravity separation method to throw in advance to remove f-CaO that in slag, proportion is less and partial solution from tricalcium silicate, think that follow-up leaching facilitates.
Difference according to essential mineral proportion and granularity in slag, the low intensity magnetic separation mine tailing is carried out gravity treatment (being pretreatment mode two), gravity treatment can be adopted hydrocyclone, jigging or shaking table, and obtain respectively gravity concentrate and gravity tailings, the enrichment in gravity concentrate of its vanadium, and entering follow-up leaching operation, gravity tailings is abandoned processing and is got final product; Pretreatment mode two can be thrown and partly consume sour impurity except light weight calcium etc., avoid its harm to leaching, directly acidleach under not roasting normal temperature and pressure after pre-treatment, leaching yield improve approximately 10%, save the acid consumption approximately 15%, extraction time shortens approximately 1/2, filtration efficiency also improves greatly.
Simultaneously, by above-mentioned two step ore dressing pretreatment, jettisoning do not contain vanadium metallic iron, f-CaO and part contain the lower tricalcium silicate of vanadium etc., vanadium enrichment to some extent after pre-treatment, V
2O
5Grade improve 1% or more than, for favourable condition has been created in follow-up wet method vanadium extraction.
(2) (not roasting selectivity segmentation acidleach under normal temperature and pressure) carry out I section preimpregnation removal of impurities under normal temperature and pressure conditions, the pH value of the gravity concentrate that obtains in step (1) being mixed according to solid-to-liquid ratio 1:1～6g/ml in sulphuric acid soln and adjusting mixed solution is 3～4, at stirring intensity be 100～500 turn/condition of min under agitation leach 0.5～6h, obtain the I section through solid-liquid separation and soak slag and Fe-laden acid immersion liquid (" iron liquid "); Carry out the II section and leach vanadium extraction under normal temperature and pressure conditions, the I section is soaked slag mixes according to solid-to-liquid ratio 1:1～6g/ml and the pH value of adjusting mixed solution is 0.3～2 in sulphuric acid soln, obtain the II section through solid-liquid separation and soak slag and contain the vanadic acid immersion liquid;
It is the acid-leaching vanadium-extracted key of slag that vanadium, iron separate.For namely realize separating of vanadium and iron in leaching stage, the slag after ore dressing pretreatment (being gravity concentrate) adopts " selectivity segmentation acidleach " novel method to leach at normal temperatures and pressures: V leaching rate is up to 95% left and right." selectivity segmentation acidleach " novel method, be that the leaching agent segmentation is added, leaching divides two sections and carries out, vanadium extraction is leached in I section preimpregnation removal of impurities, II section, and I section, the liquid-solid ratio when the II section leaches are controlled at that 1:1～5:1, extraction time are not less than 0.5h, leaching agent can adopt sulfuric acid.
Selectivity segmentation acidleach comprised for two steps: first paragraph leaches, i.e. I section preimpregnation removal of impurities: pretreated slag (being gravity concentrate) at first carries out first paragraph and leaches.It is that a kind of selectivity leaches that first paragraph leaches.During the acidleach of I section, the principle that is better than vanadium based on the solubility in acid of ferrous iron, magnesium, with a certain amount of diluted acid, the impurity such as FeO, MgO in slag is leached all first that (the acid amount when the I section leaches is come definite by the acidity pH value that the I section leaches terminal point, leach terminal point pH value and need to control 4 left and right, be not less than 3), thus obtain a kind of with Fe
2+Leach liquor for main component be referred to as " iron liquid " (disposing as waste liquid), and this moment, vanadium was not leached substantially, still resided in solid phase (the I section is soaked slag).The acidleach of I section is actually a kind of preimpregnation removal of impurities process.Second segment leaches, be that the II section leaches vanadium extraction: the I section soaks that in slag, soluble impurity reduces greatly, entering the II section leaches operation and carries out that acid-leaching vanadium-extracted (the acid amount when the II section leaches is come definite by the acidity pH value that the II section leaches terminal point equally again, leach terminal point pH value and need be controlled at 1 left and right, be not less than 0.3, not higher than 2), the leach liquor that obtains is referred to as " vanadium liquid " as the stock liquid of extraction vanadium extraction.First paragraph also can weaken CaSO after leaching
4In the impact of slag particle surface adhesion, improve the diffusion of leaching agent in mineral.
Above-mentioned I section preimpregnation removal of impurities in the situation that substantially do not lose vanadium, can be leached in advance and throw and remove approximately 45% iron, has realized the leaching separation of iron and vanadium; After the preimpregnation removal of impurities, then leach vanadium extraction and obtained the relatively pure vanadic acid immersion liquid (" vanadium liquid ") that contains.Simultaneously, compare with conventional acidleach, selectivity segmentation pickling process can be saved approximately 5% acid consumption, and segmented acid-adding has also reduced the severe degree of acid-leaching reaction, and the production process easy handling is controlled; It is also much lower that selectivity segmentation lixiviation process gained contains the pickling liquor of the relative common process of acidity of vanadic acid immersion liquid, the alkaline reagents consumption in the time of can reducing acidity adjustment before follow-up extraction.
(3) at first the vanadic acid immersion liquid that contains in step (2) is extracted front oxidation successively according to common process, acidity adjustment and extraction, the supernatant liquid of extraction is load organic phases, lower floor is abstraction waste liquor, levels is carried out washing impurity-removing with load organic phases after separating, under normal temperature condition, load organic phases is added in the activared carbon sulfur salts solution, according to washing 3～15min under the condition of comparing O/A=1～6, wash the supernatant liquid that obtains after complete for carrying a vanadium organic phase, lower floor is scrub raffinate, levels is separated, can obtain carrying vanadium organic phase and scrub raffinate, scrub raffinate returns to leaching after art breading routinely,
(4) the vanadium organic phase of carrying that obtains in step (3) is carried out back extraction according to common process, the upper strata liquid that obtains after back extraction is the unloading organic phase, subnatant is strip liquor, the unloading organic phase is returned to extraction step and is used, strip liquor carries out the ammonium salt precipitation according to common process, the precipitation product that the ammonium salt precipitation is obtained carries out calcining and decomposing according to common process, the smart vanadium product that finally makes.V in essence vanadium product
2O
5Content and contain assorted situation and reached national metallurgical V
2O
598 requirement.
Described v-bearing steel slag results from the steelmaking process of vanadium-bearing hot metal, and namely vanadium-bearing hot metal blows into steel, the vanadium conduct
A kind of impurity is blown into slag, and concrete composition comprises V
2O
51～5wt%, CaO 40%～60wt%, TFe 10%～25wt%.
Granularity after described v-bearing steel slag fragmentation, ore grinding is the 55wt% that accounts for v-bearing steel slag less than 74 μ m
Above.
Described contain the vanadic acid immersion liquid and extracted according to common process before extraction before oxidation be that the vanadium ion in containing the vanadic acid immersion liquid all is oxidized to 5 valencys, solution colour becomes brown color from blue-greenish colour, acidity adjustment is to adjust that to contain vanadic acid immersion liquid pH be 1.0～2.5.
Described active sulfate is sodium sulfate or ammonium sulfate, and concentration is 0.2～0.8mol/L.
Integrated by above-mentioned three large steps is more than Novel process for extracting vanadium vanadium total recovery provided by the present invention (the slag raw material is to smart vanadium product) reaches 80wt%.
Adopt extraction, washing, back extraction, ammonium salt precipitation, calcining and decomposing just can obtain the Vanadium Pentoxide in FLAKES product that grade reaches 99% left and right.Wherein extraction, back extraction, ammonium salt precipitation, calcining and decomposing and existing this type of operation are basic identical.
Before containing vanadic acid immersion liquid extraction, need carry out oxidation and acidity adjustment, so that the vanadium in pickling liquor all is oxidized to 5 valencys, and heightens and contain vanadic acid immersion liquid pH value the vanadium in pickling liquor is existed with the vanadium anionic form that can be extracted.Oxidation is regulated and can be adopted hydrogen peroxide, ozone, sodium chlorate or potassium permanganate etc. as oxygenant, and acidity adjustment generally adopts ammoniacal liquor, sodium hydroxide.
Amine extractant such as N are adopted in extraction
235, TOA, Alamine336.
During extraction, some impurity can inevitably enter load organic phases with vanadium.In order to obtain high-quality smart vanadium product, must thoroughly remove this part impurity, for this reason, the present invention is in the solvent extraction technology process, except extraction and back-extraction is got these two operations, newly increased the selectivity washing impurity-removing operation of one special load organic phases, and for the characteristics of load organic phases in the slag vanadium extraction, develop a kind of high duty detergent, i.e. certain activared carbon sulfur salts solution.
Reverse-extraction agent adopts 0.25M～1.5M basic solution such as Na
2CO
3, NaOH or NaCl+NaOH etc.
The ammonium salt precipitation of strip liquor can be adopted weakly alkaline ammonium salt precipitation method, slightly acidic ammonium salt precipitation method, acid ammonium salt precipitation method.The precipitation product can obtain high quality essence vanadium (V through calcining and decomposing
2O
5) product.
The invention has the beneficial effects as follows:
(1), the present invention proposes traditional " technique of preparing " is applied to the acid-leaching vanadium-extracted thought of slag innovatively, broken the conventional viewpoint of " the vanadium extraction Technical Board is limited to roasting and adds leaching ".Novel process combines the characteristic and advantage that " ore dressing " and " metallurgy " reclaims vanadium separately, can realize combination, the mutual supplement with each other's advantages of ore dressing and metallurgical integration of disciplines removal of impurities, vanadium extraction theory and technique, for the efficient utilization that contains the vanadium solid waste provides new thinking.
(2), processing method clean environment firendly of the present invention, good impurity removing effect, can obtain high-quality smart vanadium product: but ore dressing pretreatment decalcification removal of impurities, reclaim iron, Vanadium Concentrationin, be that follow-up wet method vanadium extraction is created convenient, and pre-treatment is physical separation, simple environmental protection; Selectivity segmentation acidleach under not roasting normal temperature and pressure after pre-treatment, can save huge roasting system or complicated oxygen pressing system, break through roasting and oxygen and pressed the limitation that leaches, both eliminate roasting and polluted, reduced facility investment, improve to leach again index, and can realize separating of vanadium and major impurity in leaching stage; Increase the active inorganic salt solution washing impurity-removing operation of one load organic phases, realized effectively separating of vanadium and impurity, finally can obtain high-quality smart vanadium product.
(3), processing method index of the present invention is high: the science by the single operations such as not roasting selectivity segmentation acidleach, solvent extraction under ore dressing pretreatment, normal temperature and pressure is integrated, build under normal temperature and pressure the not novel process of baking acid immersion vanadium extraction of v-bearing steel slag, the vanadium total yield is reached more than 80%, with traditional technology from contain the vanadium solid waste during vanadium extraction total yield less than 70% compare, novel process vanadium extraction index significantly promotes.
Description of drawings
Fig. 1 is process flow sheet of the present invention.
Embodiment
Embodiment 1: the v-bearing steel slag raw material of the present embodiment is taken from river, Sichuan Province Weiyuan Iron And Steel Co., Ltd of prestige group, is the slag that vanadium-bearing hot metal is directly discharged by general alkalescence " single slag process " steel-making in converter.The slag sample is Water Quenching Slag, and short texture, porous, granularity are equigranular less than 5mm, does not need to carry out break process.Concrete composition comprises V
2O
55wt%, CaO 40%wt%, TFe 10wt%.
(1) v-bearing steel slag is broken, ore grinding, equipment adopts wet-type ball mill, granularity after fragmentation, ore grinding is for more than the 60wt% that accounts for v-bearing steel slag less than 74 μ m, then carry out low intensity magnetic separation under the condition that according to common process in magneticstrength is 0.1T, the magnetic substance that obtains is the Armco magnetic iron concentrate, all the other are magnetic tailing, then the Armco magnetic iron concentrate is added water and be adjusted to pulp density 15wt%, carry out gravity treatment according to common process under the condition of stroke 6mm, jig frequency 330r/min, the heavy material that obtains is gravity concentrate, and the material that proportion is little is gravity tailings; Magnetic tailing carries out the gravity treatment pre-treatment again, and equipment adopts cloud tin formula shaking table, and the vanadium major part has entered gravity concentrate, and the rate of recovery of vanadium can reach more than 89%, and light weight calcium and other detrimental impurity of part have entered mine tailing, abandoned processing.
(2) carry out I section preimpregnation removal of impurities under normal temperature and pressure conditions, the pH value of the gravity concentrate that obtains in step (1) being mixed according to solid-to-liquid ratio 1:1g/ml in sulphuric acid soln and adjusting mixed solution is 3, at stirring intensity be 400 turn/condition of min under agitation leach 0.5h, obtain the I section through solid-liquid separation and soak slag and Fe-laden acid immersion liquid; Carry out the II section and leach vanadium extraction under normal temperature and pressure conditions, the I section is soaked slag mixes according to solid-to-liquid ratio 1:3g/ml and the pH value of adjusting mixed solution is 2 in sulphuric acid soln, obtain the II section through solid-liquid separation and soak slag and contain the vanadic acid immersion liquid; By the low intensity magnetic separation pre-treatment, recyclable 19.73% iron has reduced the accumulation of iron in leach liquor; The gravity treatment pre-treatment can be thrown except partly consuming sour impurity, avoids its harm to leaching, with respect to the direct acidleach of not pre-treatment, and acidleach after pre-treatment, leaching yield raising 11%, extraction time shortening 1/2, filtration efficiency also improve greatly; Simultaneously, the pre-treatment jettisoning do not contain metallic iron, the f-CaO of vanadium and contain the very low part tricalcium silicate of vanadium, vanadium enrichment to some extent after pre-treatment.From economy, adopt the ore dressing pretreatment technology, when recovery index improved, every processing 1t slag can be saved follow-up leaching acid consumption 0.2t (with respect to the direct acidleach of not pre-treatment), and can to obtain the 50.4kg grade be 72.87% iron ore concentrate byproduct, and benefit is very remarkable.
(3) at first the vanadic acid immersion liquid that contains in step (2) is extracted front oxidation successively according to common process, acidity adjustment and extraction, (contain the vanadic acid immersion liquid the extraction before extract according to common process before oxidation be that the vanadium ion in containing the vanadic acid immersion liquid all is oxidized to 5 valencys, solution colour becomes brown color from blue-greenish colour, acidity adjustment is to adjust that to contain vanadic acid immersion liquid pH be 1.0) supernatant liquid of extraction is load organic phases, lower floor is abstraction waste liquor, levels is carried out washing impurity-removing with load organic phases after separating, under normal temperature condition, it is in the metabisulfite solution of 0.8mol/L that load organic phases is added concentration, according to washing 10min under the condition of comparing O/A=1, wash the supernatant liquid that obtains after complete for carrying a vanadium organic phase, lower floor is scrub raffinate, levels is separated, can obtain carrying vanadium organic phase and scrub raffinate, scrub raffinate returns to leaching after art breading routinely,
(4) the vanadium organic phase of carrying that obtains in step (3) is carried out back extraction according to common process, the upper strata liquid that obtains after back extraction is the unloading organic phase, subnatant is strip liquor, the unloading organic phase is returned to extraction step and is used, strip liquor carries out the ammonium salt precipitation according to common process, the precipitation product that the ammonium salt precipitation is obtained carries out calcining and decomposing according to common process, the smart vanadium product that finally makes.Product vanadium grade and foreign matter content have all reached the requirement of national metallurgical 99 trades mark.Expect smart vanadium product from slag is former, the vanadium total yield is up to 82.02%.
Embodiment 2: the v-bearing steel slag raw material of the present embodiment is taken from and is climbed steel group.Vanadium is high owing to containing in vanadium titano-magnetite, therefore climb steel group and adopted blowing vanadium slag method, with most vanadium with this rich vanadium material (V of vanadium slag
2O
510%) mode reclaimed; But the half steel after the vanadium extraction of blowing vanadium slag method still contains higher residual vanadium, makes the V that climbs in the steel slag
2O
5Content still in 2.65% left and right.The slag raw material of getting does not pass through shrend, and its granularity and hardness are larger, and contains the bright iron that much crusher is had obvious destruction.Iron, calcium contents are higher, and calcium oxide content is up to 42%, and iron level reaches 18.6%.Concrete composition comprises V
2O
52.65wt%, CaO 42wt%, TFe 18.6wt%.
(1) v-bearing steel slag is broken, ore grinding, equipment adopts wet-type ball mill, granularity after fragmentation, ore grinding is for more than the 58wt% that accounts for v-bearing steel slag less than 74 μ m, then carry out low intensity magnetic separation under the condition that according to common process in magneticstrength is 0.08T, the magnetic substance that obtains is the Armco magnetic iron concentrate, all the other are magnetic tailing, then the Armco magnetic iron concentrate is added water and be adjusted to pulp density 25wt%, carry out gravity treatment according to common process under the condition of stroke 10mm, jig frequency 280r/min, the heavy material that obtains is gravity concentrate, and the material that proportion is little is gravity tailings; Magnetic tailing carries out the gravity treatment pre-treatment again, and for saving equipment takes up an area, equipment adopts spiral chute, and the vanadium major part has entered gravity concentrate, and the rate of recovery of vanadium can reach 88.6%, and light weight calcium and other detrimental impurity of part have entered mine tailing, abandoned processing.
(2) carry out I section preimpregnation removal of impurities under normal temperature and pressure conditions, the pH value of the gravity concentrate that obtains in step (1) being mixed according to solid-to-liquid ratio 1:4g/ml in sulphuric acid soln and adjusting mixed solution is 3.5, at stirring intensity be 100 turn/condition of min under agitation leach 3h, obtain the I section through solid-liquid separation and soak slag and Fe-laden acid immersion liquid; Carry out the II section and leach vanadium extraction under normal temperature and pressure conditions, the I section is soaked slag mixes according to solid-to-liquid ratio 1:6g/ml and the pH value of adjusting mixed solution is 1 in sulphuric acid soln, obtain the II section through solid-liquid separation and soak slag and contain the vanadic acid immersion liquid;
(3) at first the vanadic acid immersion liquid that contains in step (2) is extracted front oxidation successively according to common process, acidity adjustment and extraction, (contain the vanadic acid immersion liquid the extraction before extract according to common process before oxidation be that the vanadium ion in containing the vanadic acid immersion liquid all is oxidized to 5 valencys, solution colour becomes brown color from blue-greenish colour, acidity adjustment is to adjust that to contain vanadic acid immersion liquid pH be 2.5) supernatant liquid of extraction is load organic phases, lower floor is abstraction waste liquor, levels is carried out washing impurity-removing with load organic phases after separating, under normal temperature condition, it is in the ammoniumsulphate soln of 0.2mol/L that load organic phases is added concentration, according to washing 3min under the condition of comparing O/A=6, wash the supernatant liquid that obtains after complete for carrying a vanadium organic phase, lower floor is scrub raffinate, levels is separated, can obtain carrying vanadium organic phase and scrub raffinate, scrub raffinate returns to leaching after art breading routinely,
(4) the vanadium organic phase of carrying that obtains in step (3) is carried out back extraction according to common process, the upper strata liquid that obtains after back extraction is the unloading organic phase, subnatant is strip liquor, the unloading organic phase is returned to extraction step and is used, strip liquor carries out the ammonium salt precipitation according to common process, the precipitation product that the ammonium salt precipitation is obtained carries out calcining and decomposing according to common process, the smart vanadium product that finally makes.Essence vanadium product V
2O
5Grade is up to 99.9%.Expect smart vanadium product from slag is former, the vanadium total yield is up to 80.25%.
Embodiment 3: the v-bearing steel slag of the present embodiment is the steelmaking process that results from vanadium-bearing hot metal, and namely vanadium-bearing hot metal blows into steel, and vanadium is blown into slag as a kind of impurity, and concrete composition comprises V
2O
51wt%, CaO 60wt%, TFe 25wt%.
(1) v-bearing steel slag is broken, ore grinding, equipment adopts wet-type ball mill, granularity after fragmentation, ore grinding is the 55wt% that accounts for v-bearing steel slag less than 74 μ m, then carry out low intensity magnetic separation under the condition that according to common process in magneticstrength is 0.25T, the magnetic substance that obtains is the Armco magnetic iron concentrate, all the other are magnetic tailing, then the Armco magnetic iron concentrate is added water and be adjusted to pulp density 30wt%, carry out gravity treatment according to common process under the condition of stroke 14mm, jig frequency 440r/min, the heavy material that obtains is gravity concentrate, and the material that proportion is little is gravity tailings;
(2) carry out I section preimpregnation removal of impurities under normal temperature and pressure conditions, the pH value of the gravity concentrate that obtains in step (1) being mixed according to solid-to-liquid ratio 1:6g/ml in sulphuric acid soln and adjusting mixed solution is 4, at stirring intensity be 500 turn/condition of min under agitation leach 6h, obtain the I section through solid-liquid separation and soak slag and Fe-laden acid immersion liquid; Carry out the II section and leach vanadium extraction under normal temperature and pressure conditions, the I section is soaked slag mixes according to solid-to-liquid ratio 1:1g/ml and the pH value of adjusting mixed solution is 0.3 in sulphuric acid soln, obtain the II section through solid-liquid separation and soak slag and contain the vanadic acid immersion liquid;
(3) at first the vanadic acid immersion liquid that contains in step (2) is extracted front oxidation successively according to common process, acidity adjustment and extraction, (contain the vanadic acid immersion liquid the extraction before extract according to common process before oxidation be that the vanadium ion in containing the vanadic acid immersion liquid all is oxidized to 5 valencys, solution colour becomes brown color from blue-greenish colour, acidity adjustment is to adjust that to contain vanadic acid immersion liquid pH be 2) supernatant liquid of extraction is load organic phases, lower floor is abstraction waste liquor, levels is carried out washing impurity-removing with load organic phases after separating, under normal temperature condition, it is in the metabisulfite solution of 0.6mol/L that load organic phases is added concentration, according to washing 15min under the condition of comparing O/A=3, wash the supernatant liquid that obtains after complete for carrying a vanadium organic phase, lower floor is scrub raffinate, levels is separated, can obtain carrying vanadium organic phase and scrub raffinate, scrub raffinate returns to leaching after art breading routinely,
(4) the vanadium organic phase of carrying that obtains in step (3) is carried out back extraction according to common process, the upper strata liquid that obtains after back extraction is the unloading organic phase, subnatant is strip liquor, the unloading organic phase is returned to extraction step and is used, strip liquor carries out the ammonium salt precipitation according to common process, the precipitation product that the ammonium salt precipitation is obtained carries out calcining and decomposing according to common process, the smart vanadium product that finally makes, and the rate of recovery of vanadium is up to 81wt%.
Claims (5)
1. the method for a v-bearing steel slag vanadium extraction is characterized in that concrete steps comprise as follows:
(1) will carry out low intensity magnetic separation after v-bearing steel slag fragmentation, ore grinding under the condition that according to common process in magneticstrength is 0.08T～0.25T, the magnetic substance that obtains is the Armco magnetic iron concentrate, all the other are magnetic tailing, then the Armco magnetic iron concentrate is added water and be adjusted to pulp density 15～30wt%, carry out gravity treatment according to common process under the condition of stroke 6～14mm, jig frequency 280～440r/min, the heavy material that obtains is gravity concentrate, and the material that proportion is little is gravity tailings;
(2) carry out I section preimpregnation removal of impurities under normal temperature and pressure conditions, the pH value of the gravity concentrate that obtains in step (1) being mixed according to solid-to-liquid ratio 1:1～6g/ml in sulphuric acid soln and adjusting mixed solution is 3～4, at stirring intensity be 100～500 turn/condition of min under agitation leach 0.5～6h, obtain the I section through solid-liquid separation and soak slag and Fe-laden acid immersion liquid; Carry out the II section and leach vanadium extraction under normal temperature and pressure conditions, the I section is soaked slag mixes according to solid-to-liquid ratio 1:1～6g/ml and the pH value of adjusting mixed solution is 0.3～2 in sulphuric acid soln, obtain the II section through solid-liquid separation and soak slag and contain the vanadic acid immersion liquid;
(3) at first the vanadic acid immersion liquid that contains in step (2) is extracted front oxidation successively according to common process, acidity adjustment and extraction, the supernatant liquid of extraction is load organic phases, lower floor is abstraction waste liquor, levels is carried out washing impurity-removing with load organic phases after separating, under normal temperature condition, load organic phases is added in the activared carbon sulfur salts solution, according to washing 3～15min under the condition of comparing O/A=1～6, wash the supernatant liquid that obtains after complete for carrying a vanadium organic phase, lower floor is scrub raffinate, levels is separated, can obtain carrying vanadium organic phase and scrub raffinate, scrub raffinate returns to leaching after art breading routinely,
(4) the vanadium organic phase of carrying that obtains in step (3) is carried out back extraction according to common process, the upper strata liquid that obtains after back extraction is the unloading organic phase, subnatant is strip liquor, the unloading organic phase is returned to extraction step and is used, strip liquor carries out the ammonium salt precipitation according to common process, the precipitation product that the ammonium salt precipitation is obtained carries out calcining and decomposing according to common process, the smart vanadium product that finally makes.
2. the method for v-bearing steel slag vanadium extraction according to claim 1, it is characterized in that: described v-bearing steel slag results from the steelmaking process of vanadium-bearing hot metal, and concrete composition comprises V
2O
51～5wt%, CaO 40%～60wt%, TFe 10%～25wt%.
3. the method for v-bearing steel slag vanadium extraction according to claim 1 is characterized in that: described v-bearing steel slag is broken, the granularity after ore grinding is for more than the 55wt% that accounts for v-bearing steel slag less than 74 μ m.
4. the method for v-bearing steel slag vanadium extraction according to claim 1, it is characterized in that: described contain the vanadic acid immersion liquid the extraction before extract according to common process before oxidation be that the vanadium ion in containing the vanadic acid immersion liquid all is oxidized to 5 valencys, solution colour becomes brown color from blue-greenish colour, and acidity adjustment is to adjust that to contain vanadic acid immersion liquid pH be 1.0～2.5.
5. the method for v-bearing steel slag vanadium extraction according to claim 1, it is characterized in that: described active sulfate is sodium sulfate or ammonium sulfate, concentration is 0.2～0.8mol/L.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397187A (en) * | 2013-07-16 | 2013-11-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for vanadium extraction by activating high-calcium high-phosphorus vanadium slag with nitric acid |
| CN106676275A (en) * | 2016-12-16 | 2017-05-17 | 攀枝花浩恒钒钛科技有限公司 | Vanadium extraction method based on waste steel slag and acid-base property waste water |
| CN108374082A (en) * | 2018-02-08 | 2018-08-07 | 北京科技大学 | A method of vanadium grade in vanadium concentrate is improved by oxidation processes-magnetic separation separation |
| CN108467945A (en) * | 2018-04-09 | 2018-08-31 | 攀枝花市红杉钒制品有限公司 | A kind of processing method of slag, titanium white waste acid |
| CN113549769A (en) * | 2021-07-30 | 2021-10-26 | 攀枝花钢城集团有限公司 | Method for enriching vanadium in vanadium-containing steel slag |
-
2013
- 2013-03-12 CN CN201310077492XA patent/CN103131867A/en active Pending
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397187A (en) * | 2013-07-16 | 2013-11-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for vanadium extraction by activating high-calcium high-phosphorus vanadium slag with nitric acid |
| CN106676275A (en) * | 2016-12-16 | 2017-05-17 | 攀枝花浩恒钒钛科技有限公司 | Vanadium extraction method based on waste steel slag and acid-base property waste water |
| CN108374082A (en) * | 2018-02-08 | 2018-08-07 | 北京科技大学 | A method of vanadium grade in vanadium concentrate is improved by oxidation processes-magnetic separation separation |
| CN108467945A (en) * | 2018-04-09 | 2018-08-31 | 攀枝花市红杉钒制品有限公司 | A kind of processing method of slag, titanium white waste acid |
| CN113549769A (en) * | 2021-07-30 | 2021-10-26 | 攀枝花钢城集团有限公司 | Method for enriching vanadium in vanadium-containing steel slag |
| CN113549769B (en) * | 2021-07-30 | 2022-09-27 | 攀枝花钢城集团有限公司 | Method for enriching vanadium in vanadium-containing steel slag |
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Application publication date: 20130605 |