WO2004090179A1 - Methode de recuperation de copeaux d'oxyde de vanadium a partir de cendres volantes de carburant diesel ou de cendres volantes d'orimulsion - Google Patents
Methode de recuperation de copeaux d'oxyde de vanadium a partir de cendres volantes de carburant diesel ou de cendres volantes d'orimulsion Download PDFInfo
- Publication number
- WO2004090179A1 WO2004090179A1 PCT/KR2004/000742 KR2004000742W WO2004090179A1 WO 2004090179 A1 WO2004090179 A1 WO 2004090179A1 KR 2004000742 W KR2004000742 W KR 2004000742W WO 2004090179 A1 WO2004090179 A1 WO 2004090179A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- vanadium
- ash
- fly
- orimulsion
- diesel oil
- Prior art date
Links
- 239000010881 fly ash Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000002283 diesel fuel Substances 0.000 title claims abstract description 22
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910001935 vanadium oxide Inorganic materials 0.000 title claims abstract description 20
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 54
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 54
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 24
- LOUBVQKDBZRZNQ-UHFFFAOYSA-M [O-2].[O-2].[OH-].O.[V+5] Chemical compound [O-2].[O-2].[OH-].O.[V+5] LOUBVQKDBZRZNQ-UHFFFAOYSA-M 0.000 claims abstract description 22
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000002386 leaching Methods 0.000 claims abstract description 11
- 238000002844 melting Methods 0.000 claims abstract description 9
- 230000008018 melting Effects 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 230000004907 flux Effects 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 230000003472 neutralizing effect Effects 0.000 claims abstract description 7
- 238000000926 separation method Methods 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims abstract description 6
- 238000013019 agitation Methods 0.000 claims abstract description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 150000002739 metals Chemical class 0.000 claims description 8
- 239000003638 chemical reducing agent Substances 0.000 claims description 6
- -1 vanadium and nickel Chemical class 0.000 claims description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical group [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 4
- 239000004323 potassium nitrate Substances 0.000 claims description 2
- 235000010333 potassium nitrate Nutrition 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 14
- 230000008569 process Effects 0.000 description 13
- 238000002360 preparation method Methods 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 229910000628 Ferrovanadium Inorganic materials 0.000 description 6
- PNXOJQQRXBVKEX-UHFFFAOYSA-N iron vanadium Chemical compound [V].[Fe] PNXOJQQRXBVKEX-UHFFFAOYSA-N 0.000 description 6
- 235000011121 sodium hydroxide Nutrition 0.000 description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical compound [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000009279 wet oxidation reaction Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229910001456 vanadium ion Inorganic materials 0.000 description 1
- 239000000341 volatile oil Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/20—Obtaining niobium, tantalum or vanadium
- C22B34/22—Obtaining vanadium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/08—Sulfuric acid, other sulfurated acids or salts thereof
-
- 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
Definitions
- the present invention relates, in general, to methods of recovering a vanadium oxide flake. More specifically, the present invention is directed to a method of recovering a vanadium pentoxide flake, which is a raw material for preparation of fer- rovanadium, from diesel oil fly-ash or Orimulsion fly-ash generated upon burning bunker oil or Orimulsion.
- diesel oil fly-ash is very light black powders having an apparent specific gravity of 0.4, recovered into an electric dust collector upon burning bunker oil fuel in a boiler, and contains 3-15% vanadium and 2-10% nickel.
- Orimulsion fly-ash is obtained upon burning an emulsion fuel comprising bitumen (residue remaining after volatile oil components in the petroleum are evaporated) mined in Orinoco province, Venezuela , in mixture with water and a surfactant.
- the Orimulsion fly-ash having an apparent specific gravity of about 0.2 consists of 5-20% vanadium, 1-5% nickel and 2-15% magnesium.
- Orimulsion has been spotlighted as a replacement for conventional fuel oil.
- Youngnam Power Plant in Ulsan province and F nam Power Plant in Yeosu , Korea have plans to substitute Orimulsion for bunker oil as a boiler fuel in 2003 and 2004, respectively.
- the Orimulsion fly-ash is expected to be generated in drastically increased amounts.
- diesel oil fly-ash or Orimulsion fly-ash is leached with sulfuric acid to dissolve vanadium and other valuable metals. Then, through a wet oxidation process using steam and air in a high-pressure reactor or using an oxidizing agent of NaClO , all the dissolved vanadium is oxidized to a pentavalent state.
- pentavalent vanadium-containing solution is added with a neutralizing agent, such as ammonia or caustic soda, and pH thereof is adjusted to 2.5-3 or 8. Thereafter, the solution is maintained at 80-120 ° C or higher for 1 hour or more, whereby vanadium is precipitated in the state of a red cake consisting mainly of vanadium pentoxide or ammonium vanadate and separated from the solution.
- the red cake or ammonium vanadate is melted at 800-1000 ° C and is prepared in the flake state, which is used as a preparation material of ferrovanadium.
- F wever the above method is disadvantageous in terms of use of expensive
- an object of the present invention is to alleviate the problems of conventional recovery treatments encountered in the prior art and to provide a method of recovering a vanadium, which is advantageous in terms of considerably decreased energy consumption to remarkably lower preparation cost of ferrovanadium, thus generating economic benefits.
- a method of recovering a vanadium oxide flake from diesel oil fly-ash or Orimulsion fly-ash comprising the steps of leaching a mixture of diesel oil fly-ash or Orimulsion fly-ash and water in an agitation leaching bath to dissolve valuable metals, such as vanadium and nickel, followed by subjecting the leached mixture to solid-liquid separation, thereby separating a leached solution from insoluble residues; adding the leached solution with a neutralizing agent to adjust pH to 5-6 to precipitate, separate and recover vanadium tetraoxide from the leached solution, thereby preparing vanadium tetraoxide; drying the prepared vanadium tetraoxide at high temperatures to remove water contained in vanadium tetraoxide; and adding the dried vanadium tetraoxide with a flux and melting vanadium tetraoxide in a melting furnace to prepare a vanadium oxide flake, thereby recovering vana
- FIG. 1 is a diagram showing a process of recovering a vanadium oxide flake according to the present invention.
- FIG. 1 there is shown a process for recovering a vanadium oxide flake according to the present invention.
- diesel oil fly-ash or Orimulsion fly-ash is mixed with water or a weak sulfuric acid to dissolve valuable metals, such as vanadium and nickel, in an agitation leaching bath (ST 1), and a solid- liquid separation process is performed by use of a filter to separate a leached solution from insoluble residues (ST 2).
- vanadium tetraoxide ST 4
- vanadium tetraoxide V O
- the flux is selected from the group consisting of potassium nitrate, sodium carbonate or mixtures thereof.
- parts of the recovered vanadium flake are present in the form of vanadium tetraoxide, which functions to decrease the amount of the reducing agent to be used upon preparation of ferrovanadium.
- a reducing agent was added in the amount of 20 wt% relative to the total weight of vanadium to reduce pentavalent vanadium to tetravalent vanadium.
- pentavalent vanadium concentration was decreased to 0.4 g/1.
- vanadium in the leached solution was recovered at a yield of 99.9 wt%, and parts of iron and nickel were precipitated and recovered together.
- the recovered vanadium cake was sufficiently dried upon performing a drying process, and then mixed with KNO at a suitable mixing ratio.
- KNO KNO
- the mixed vanadium flake was fed together with air, to obtain a vanadium oxide flake containing 60 wt% of vanadium (pentavalent vanadium 79%, tetravalent vanadium 21%).
- the recovered vanadium cake was sufficiently dried upon performing a drying process, and then mixed with Na CO and KNO as a flux at a suitable mixing ratio.
- the mixed vanadium cake was fed together with air into a melting furnace of 900-1000 ° C, to obtain a vanadium oxide flake containing 57 wt% of vanadium (pentavalent vanadium 82%, tetravalent vanadium 18%).
- the contents and the recovery yields of the metals according to each process are shown in Table 2, below.
- the present invention provides a method of recovering vanadium pentoxide from diesel oil fly-ash or Orimulsion fly-ash.
- the wet oxidation process using an oxidizing agent or using steam and air is not used, large quantities of energy are not required, therefore resulting in remarkably lowered preparation cost of ferrovanadium.
- problems of hazardous work environment and reactor corrosion due to chlorine gas or ammonia gas generated by the oxidizing agent and the ammonia compound can be overcome.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
L'invention concerne une méthode de récupération de copeaux d'oxyde de vanadium à partir de cendres volantes de carburant diesel ou de cendres volantes d'orimulsion. La méthode consiste à: lixivier un mélange de cendres volantes de carburant diesel ou de cendres volantes d'orimulsion dans un bain de lixiviation par agitation pour dissoudre le vanadium et le nickel; soumettre le mélange lixivié à une séparation solide-liquide pour obtenir une solution lixiviée; ajouter un agent neutralisant à la solution lixiviée pour régler le pH à 5-6 et récupérer du tétraoxyde de vanadium à partir de la solution lixiviée; sécher le tétraoxyde de vanadium récupéré à des températures élevées pour éliminer l'eau présente dans le tétraoxyde de vanadium; et ajouter un flux au tétraoxyde de vanadium séché et porter à fusion le tétraoxyde de vanadium dans un four de fusion afin de préparer un copeau d'oxyde de vanadium.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2003-0023043A KR100516976B1 (ko) | 2003-04-11 | 2003-04-11 | 중유회 또는 오리멀젼회로 부터 산화바나듐 플레이크를회수하는 방법 |
| KR10-2003-0023043 | 2003-04-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004090179A1 true WO2004090179A1 (fr) | 2004-10-21 |
Family
ID=33157292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2004/000742 WO2004090179A1 (fr) | 2003-04-11 | 2004-03-31 | Methode de recuperation de copeaux d'oxyde de vanadium a partir de cendres volantes de carburant diesel ou de cendres volantes d'orimulsion |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100516976B1 (fr) |
| WO (1) | WO2004090179A1 (fr) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220492A (zh) * | 2011-06-16 | 2011-10-19 | 保靖天瑞钒业有限公司 | 一种石煤酸浸提钒浸出液中和还原处理装置及处理方法 |
| CN102560096A (zh) * | 2010-12-15 | 2012-07-11 | 张广林 | 一种罐式循环堆浸法提钒工艺 |
| CN105087932A (zh) * | 2015-09-01 | 2015-11-25 | 攀钢集团攀枝花钢铁研究院有限公司 | 酸性富钒液中硅的去除方法及氧化钒的制备方法 |
| CN108913894A (zh) * | 2018-07-27 | 2018-11-30 | 攀钢集团攀枝花钢铁研究院有限公司 | 钒铁合金冶炼的自搅拌工艺 |
| CN111041243A (zh) * | 2020-01-13 | 2020-04-21 | 攀钢集团攀枝花钢铁研究院有限公司 | 酸性高磷钒液提钒的方法 |
| WO2024019625A1 (fr) | 2022-07-18 | 2024-01-25 | Re-Solve Sp. Z O.O. | Procédé de gestion de cendres volantes issues de la combustion de produits pétroliers |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100892436B1 (ko) * | 2007-06-19 | 2009-04-16 | 주식회사 한국환경사업단 | 사산화바나듐으로부터 제조되는 바나듐 플레이크 제조방법 및 바나듐 단광 |
| JP7117325B2 (ja) * | 2017-12-04 | 2022-08-12 | 昭和電工株式会社 | バナジン酸塩の製造方法 |
| CN110436452B (zh) * | 2019-07-31 | 2021-09-21 | 四川省有色冶金研究院有限公司 | 一种从石墨型钒矿富集五氧化二钒和石墨的方法 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3873669A (en) * | 1972-06-09 | 1975-03-25 | Philippe Guillaud | Process for treatment of vanadium containing fly ash |
| US20020112968A1 (en) * | 2000-12-15 | 2002-08-22 | Chiyoda Corporation | Production of high purity vanadium compound from vanadium-containing carbonaceous residues |
-
2003
- 2003-04-11 KR KR10-2003-0023043A patent/KR100516976B1/ko not_active IP Right Cessation
-
2004
- 2004-03-31 WO PCT/KR2004/000742 patent/WO2004090179A1/fr active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3873669A (en) * | 1972-06-09 | 1975-03-25 | Philippe Guillaud | Process for treatment of vanadium containing fly ash |
| US20020112968A1 (en) * | 2000-12-15 | 2002-08-22 | Chiyoda Corporation | Production of high purity vanadium compound from vanadium-containing carbonaceous residues |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102560096A (zh) * | 2010-12-15 | 2012-07-11 | 张广林 | 一种罐式循环堆浸法提钒工艺 |
| CN102220492A (zh) * | 2011-06-16 | 2011-10-19 | 保靖天瑞钒业有限公司 | 一种石煤酸浸提钒浸出液中和还原处理装置及处理方法 |
| CN105087932A (zh) * | 2015-09-01 | 2015-11-25 | 攀钢集团攀枝花钢铁研究院有限公司 | 酸性富钒液中硅的去除方法及氧化钒的制备方法 |
| CN105087932B (zh) * | 2015-09-01 | 2017-08-25 | 攀钢集团攀枝花钢铁研究院有限公司 | 酸性富钒液中硅的去除方法及氧化钒的制备方法 |
| CN108913894A (zh) * | 2018-07-27 | 2018-11-30 | 攀钢集团攀枝花钢铁研究院有限公司 | 钒铁合金冶炼的自搅拌工艺 |
| CN111041243A (zh) * | 2020-01-13 | 2020-04-21 | 攀钢集团攀枝花钢铁研究院有限公司 | 酸性高磷钒液提钒的方法 |
| WO2024019625A1 (fr) | 2022-07-18 | 2024-01-25 | Re-Solve Sp. Z O.O. | Procédé de gestion de cendres volantes issues de la combustion de produits pétroliers |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20040089324A (ko) | 2004-10-21 |
| KR100516976B1 (ko) | 2005-09-26 |
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