CN1824607A - Vanadium extraction technology of high aluminium slag - Google Patents
Vanadium extraction technology of high aluminium slag Download PDFInfo
- Publication number
- CN1824607A CN1824607A CNA2005100203948A CN200510020394A CN1824607A CN 1824607 A CN1824607 A CN 1824607A CN A2005100203948 A CNA2005100203948 A CN A2005100203948A CN 200510020394 A CN200510020394 A CN 200510020394A CN 1824607 A CN1824607 A CN 1824607A
- Authority
- CN
- China
- Prior art keywords
- vanadium
- leaching
- slag
- extraction process
- vanadium extraction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention discloses a process for extracting vanadium from waste slag-aluminous slag produced in production of high-vanadium iron. It can raise percent recovery of vanadium. Said invention adopts Na2Co3 as calcinations additive, and adds MgSO4 as conversion agent and makes the aluminous slag undergo the processes of oxidation, calcinations and carbon-ammonium leaching-out treatment to extract vanadium pentoxide V2O5. Its percent recovery of vanadium is up to 65%-75%, and V2O5 product quality can be up to 98%.
Description
Technical Field
The invention relates to a process for recovering and extracting vanadium, in particular to a process for extracting vanadium from high-aluminum slag, which is used for extracting vanadium from waste slag generated in the production of high-vanadium iron.
Background
Currently, there are basically two ways to extract vanadium in the world: firstly, extracting vanadium from vanadium ore; secondly, vanadium is recovered secondarily from the production process of other products or vanadium is extracted from vanadium-containing waste residues, for example, vanadium is extracted from waste residues for producing high vanadium iron. The waste slag for producing the high vanadium iron is high aluminum slag, and the main components and the weight percentage thereofThe ratio is as follows: 4-6% of V2O580-84% of Al2O320-15% of CaO, 6-8% of MgO and a small amount of SiO2. The high-alumina slag contains 80-84% of V2O5，V2O5The content of (A) is high, and the complex recovery and utilization of the (A) are required. The domestic manufacturers recover V from high-alumina slag produced in the production of high-vanadium iron2O5In general, the high-alumina slag is mixed with an alkaline additive such as NaCl or Na2CO3、Na2SO4Mixing, sodium oxide roasting in a roasting furnace, leaching the roasted material with water, alkaline solution or dilute acid solution, separating vanadate from useless components, hydrolyzing and precipitating the vanadium-containing solution to separate red hydrated vanadium pentoxide, or adding NH4Cl or (NH)4)2SO4Precipitating ammonium metavanadate or ammonium vanadate crystals, heating and dehydrating or dissolving hydrated vanadium pentoxide to obtain vanadium pentoxide products so as to meet various different requirements. After sodium oxide roasting, it is difficult to separate aluminate and vanadate well in the leaching process, especially adding Na in roasting process2CO3And NaCl as additive, and the aluminate is suspended in the solution during leaching and is difficult to clarify and separate. At the same time, the addition of too much alkali during roasting tends to cause leaching to form a paste, which is a failure. In addition, since CaO in the high-alumina slag is a very harmful component, CaO and V are the same during the roasting process2O5In combination, insoluble Ca (VO) is formed3)2Therefore, when the vanadate is transferred into the leaching solution for leaching, the part of vanadate can not be separated from useless components, and the part of vanadate still remains in the slag after the leaching process, so that the recovery rate of vanadium is low and is only 30-50%. Therefore, the calcination conversion rate is sharply reduced as the CaO content in the high-alumina slag is increased. The production practice proves that: especially when NaCl is used as roasting additive, CaO has retarding effect on NaCl decomposition and thus has adverse effect on roasting conversion rateThe noise is more severe. The recycling rate is too low to be reproduced, and more seriously, the high-alumina slag passes throughThe secondary slag after roasting and vanadium extraction contains V2O5Only 2-3%, and the large amount of the materials are accumulated, and the production cannot be organized, thereby causing the waste of resources. Furthermore, Na is used2CO3And NaCl as roasting additive, and has high acid consumption, long vanadium precipitating time, difficult filtering, difficult vanadium content in the supernatant and V content2O5The quality is not good, and a sodium removal process is added to the supernatant liquid to be discharged after the vanadium is precipitated, so that the wastewater can be discharged.
Disclosure of Invention
In order to overcome the defect that V in the existing high-alumina slag recovered by high-alumina slag produced in the production of high-vanadium iron is utilized2O5The invention aims to solve the technical problem of providing a high-aluminum slag vanadium extraction process capable of improving the recovery rate of vanadium.
The technical scheme adopted by the invention for solving the technical problems is as follows: the vanadium extraction process of the high-aluminum slag adopts Na2CO3As a roasting additive, and adding MgSO4Sodium oxide roasting and ammonium carbonate leaching of high alumina slag as converting agent to extract V2O5。
As a further improvement on the technical scheme, the high-aluminum slag vanadium extraction process comprises the following process steps:
(1) crushing and ball-milling the high-alumina slag to ensure that the granularity of ball-milled particles is 70-80% of-120 meshes;
(2) mixing materials: mixing the high-alumina slag particles and Na2CO3、Mg SO4·7H2Mixing O uniformly according to the weight percentage of 100: 6.5-7.5: 2.4-3.2;
(3) roasting: feeding the mixed materials into a rotary furnace to carry out sodium oxide roasting at the temperature of 1000 +/-50 ℃ for 8 hours to form clinker;
(4) leaching: adding the clinker, water and (NH) into a leaching tank4)2CO3Mixing the raw materials according to the weight percentage of 100: 200-300: 2.5-4.5, keeping the mixture at the leaching temperature of 60-70 ℃ for 40 minutes, and then putting the leachate into a clarification tank;
(5) and (3) vanadium precipitation: putting the filtered leachate into a vanadium precipitation tank, stirring, adjusting the pH value to be 2 by using sulfuric acid, heating to 95-100 ℃, and keeping the temperature for more than 2 hours, wherein V is2O5And then can be precipitated.
The invention has the beneficial effects that: due to the adoption of Na2CO3As a roasting additive, and adding MgSO4Sodium oxide roasting and ammonium carbonate leaching of high alumina slag as converting agent to extract V2O5The recovery rate of vanadium is as high as 65-75%, V2O5The product quality can reach 98%, the filtration is easy, the leachate is clarified quickly, the process flow is simple, and the process of removing sodium from the supernatant liquid to be discharged after vanadium precipitation is cancelled; no sewage is discharged in the whole production process, and the sediments contain AL2O3Up to80-84% of the total weight of the aluminum alloy, and can be used as a refractory material and a raw material for producing aluminate products. The process can be widely applied to recovering V from high-aluminum slag produced in high-vanadium iron production2O5In the production of (1).
Detailed Description
As CaO contained in the high-alumina slag is extremely harmful component, the CaO and the V are the same during the roasting process2O5In combination, insoluble Ca (VO) is formed3)2And is not leached in the leaching process, so that the recovery rate of vanadium is low. In order to increase the conversion of vanadium, Ca (VO) must be destroyed3)2The calciumsalt which has high melting point and is insoluble in water is formed and remained in the slag, and metavanadate is converted into metavanadate which is easy to leach out and is dissolved in the solution to separate the metavanadate.
Therefore, the process for extracting vanadium from high-aluminum slag adopts Na in the roasting process2CO3As a roasting additive, and adding MgSO with a melting point of 1124 DEG C4Sodium oxide roasting and ammonium carbonate leaching of high alumina slag as converting agent to extract V2O5. Calcium in the high-aluminum slag is combined with sulfate radical to form Ca SO with the melting point as high as 1450 DEG C4Residual in the slag, metavanadate is converted into easily leached and dissolvedNaVO in water3The reaction equation is as follows:
placing the roasted clinker in a leaching tank, and extracting V by using an ammonium carbonate leaching method2O5While preventing AL (OH) in the slag3Hydrolysis to al (oh)3The generated basic aluminum carbonate remains in the slag and is separated from soluble vanadate, and the reaction equation is as follows:
thus, after the leaching solution is filtered, the leaching solution is placed into a vanadium precipitation tank to be heated in an acid environment, and vanadium precipitation is carried out for a certain time, so that V is obtained2O5The crystalline precipitate, the reaction equation of which is as follows:
example (b): specifically, the high-aluminum slag vanadium extraction process comprises the following process steps:
(1) the high-aluminum slag is crushed and ball-milled, so that the granularity of ball-milled particles is 70-80% of-120 meshes, and the aim of the method is to ensure that a better leaching effect is obtained.
(2) Mixing materials: mixing the high-alumina slag particles and Na2CO3、Mg SO4·7H2The O is uniformly mixed according to the weight percentage of 100: 6.5-7.5: 2.4-3.2.
(3) Roasting: and (3) feeding the mixed materials into a rotary furnace to carry out sodium oxide roasting at the temperature of 1000 +/-50 ℃, wherein the roasting time is 8 hours to form clinker, and the temperature is controlled to prevent the clinker from sintering to influence the leaching effect.
(4) Leaching: adding the clinker, water and (NH) into a leaching tank4)2CO3Mixing according to the weight percentage of 100: 200-300: 2.5-4.5, in the process, stirring continuously, preferably injecting water into a leaching tank, starting a stirrer to stir at the speed of 60-70 r/min, slowly adding clinker, and then adding (NH)4)2CO3And keeping the temperature at 60-70 ℃ for 40 minutes, and then putting the leachate into a clarification tank.
In order to further improve the recovery rate of vanadium, the sediment of the leaching process can be washed with sediment, water and (NH)4)2CO3Mixing according to theweight percentage of 100: 200-300: 1, keeping for 0.5 hour at the temperature of 40-50 ℃, and returning slag washing water to the leaching tank.
(5) And (3) vanadium precipitation: putting the filtered leachate into a vanadium precipitation tank, stirring, adjusting the pH value to be 2 by using sulfuric acid, heating to 95-100 ℃, and keeping the temperature for more than 2 hours, wherein V is2O5Then the crystal can be precipitated.
In order to increase the rate of vanadium precipitation, it is preferable to add V after adjusting the pH to 2 with sulfuric acid2O5As a seed crystal, heating to 95-100 ℃, and keeping for 2-3 hours to obtain V2O5Precipitation of crystals, V2O5The purity of the product can reach 98 percent.
The supernatant after vanadium precipitation contains V2O5And (4) about 70-120 mg/L, and the mixture is neutralized by lime water to a pH value of 7-9 and then can be discharged.
Claims (7)
1. The vanadium extraction process of high-aluminum slag adopts Na2CO3As a roasting additive, and adding MgSO4Sodium oxide roasting and ammonium carbonate leaching of high alumina slag as converting agent to extract V2O5。
2. The high-aluminum slag vanadium extraction process of claim 1, comprising the following process steps:
(1) crushing and ball-milling the high-alumina slag to ensure that the granularity of ball-milled particles is 70-80% of-120 meshes;
(2) mixing materials: mixing the high-alumina slag particles and Na2CO3、MgSO4·7H2Mixing O uniformly according to the weight percentage of 100: 6.5-7.5: 2.4-3.2;
(3) roasting: feeding the mixed materials into a rotary furnace to carry out sodium oxide roasting at the temperature of 1000 +/-50 ℃ for 8 hours to form clinker;
(4) leaching: adding the clinker, water and (NH) into a leaching tank4)2CO3Mixing the raw materials according to the weight percentage of 100: 200-300: 2.5-4.5, keeping the mixture at the leaching temperature of 60-70 ℃ for 40 minutes, and then putting the leachate into a clarification tank;
(5) and (3) vanadium precipitation: putting the filtered leachate into a vanadium precipitation tank, stirring, adjusting the pH value to be 2 by using sulfuric acid, heating to 95-100 ℃, and keeping the temperature for more than 2 hours, wherein V is2O5And then can be precipitated.
3. The high-aluminum slag vanadium extraction process as claimed in claim 2, which is characterized in that: stirring is continuously carried out in the leaching process.
4. The high-aluminum slag vanadium extraction process as claimed in claim 3, which is characterized in that: in the leaching procedure, firstly, water is injected into a leaching tank, a stirrer is started to stir at the speed of 60-70 r/min, then clinker is slowly added, and then (NH) is added4)2CO3。
5. The high-aluminum slag vanadium extraction process as claimed in claim 2, which is characterized in that: in the vanadium precipitation process, after the pH value is adjusted to 2 by sulfuric acid, V is added2O5As seed crystal, heating to 95-100 deg.C, and maintainingfor 2-3 hr.
6. The high-aluminum slag vanadium extraction process as claimed in claim 2, which is characterized in that: after the leaching process, the sediment is washed, sediment, water and (NH)4)2CO3According to the weight percentage of 100: 200-300: 1Mixing, keeping at 40-50 deg.C for 0.5 hr, and returning the residue washing water to the leaching tank.
7. The high-aluminum slag vanadium extraction process as claimed in claim 2, which is characterized in that: and neutralizing the supernatant subjected to vanadium precipitation with lime water to a pH value of 7-9, and discharging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100203948A CN1824607A (en) | 2005-02-22 | 2005-02-22 | Vanadium extraction technology of high aluminium slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100203948A CN1824607A (en) | 2005-02-22 | 2005-02-22 | Vanadium extraction technology of high aluminium slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1824607A true CN1824607A (en) | 2006-08-30 |
Family
ID=36935479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005100203948A Pending CN1824607A (en) | 2005-02-22 | 2005-02-22 | Vanadium extraction technology of high aluminium slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1824607A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100449010C (en) * | 2006-10-24 | 2009-01-07 | 郴州市金龙铁合金有限公司 | Process for smelting ferrovanadium by extraction of vanadium from vanadium-containing errophosphorus |
| CN101289705B (en) * | 2007-04-20 | 2010-07-14 | 北京化工大学 | Process for abstracting vanadium from iron-smelting waste slag of vanadium -containing iron ore |
| CN102560086A (en) * | 2012-03-14 | 2012-07-11 | 重庆大学 | Method for extracting vanadium from vanadium slag clinker leached by ammonium carbonate |
| CN102586610A (en) * | 2012-03-19 | 2012-07-18 | 河北钢铁股份有限公司承德分公司 | Cleaner production process for synchronously extracting vanadium and aluminum from aluminothermic vanadium iron slag |
| CN103276218A (en) * | 2013-06-05 | 2013-09-04 | 周长祥 | Method for recycling vanadium from vanadium-containing electrolysis aluminum slag ash |
| CN104017993A (en) * | 2014-06-11 | 2014-09-03 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for preparing vanadium oxide by using sodium salt roasting lixivium of titanium tetrachloride refined tailings |
| CN104694811A (en) * | 2015-02-06 | 2015-06-10 | 铜陵百荣新型材料铸件有限公司 | Method for preparing aluminum-vanadium-iron alloy by using aluminium ash and slag generated during production of high vanadium-iron alloy |
| CN111304453A (en) * | 2020-04-20 | 2020-06-19 | 承德燕北冶金材料有限公司 | Method for utilizing vanadium-containing waste refractory bricks |
-
2005
- 2005-02-22 CN CNA2005100203948A patent/CN1824607A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100449010C (en) * | 2006-10-24 | 2009-01-07 | 郴州市金龙铁合金有限公司 | Process for smelting ferrovanadium by extraction of vanadium from vanadium-containing errophosphorus |
| CN101289705B (en) * | 2007-04-20 | 2010-07-14 | 北京化工大学 | Process for abstracting vanadium from iron-smelting waste slag of vanadium -containing iron ore |
| CN102560086B (en) * | 2012-03-14 | 2014-04-16 | 重庆大学 | Method for extracting vanadium from vanadium slag clinker leached by ammonium carbonate |
| CN102560086A (en) * | 2012-03-14 | 2012-07-11 | 重庆大学 | Method for extracting vanadium from vanadium slag clinker leached by ammonium carbonate |
| CN102586610A (en) * | 2012-03-19 | 2012-07-18 | 河北钢铁股份有限公司承德分公司 | Cleaner production process for synchronously extracting vanadium and aluminum from aluminothermic vanadium iron slag |
| CN102586610B (en) * | 2012-03-19 | 2013-07-31 | 河北钢铁股份有限公司承德分公司 | Cleaner production process for synchronously extracting vanadium and aluminum from aluminothermic vanadium iron slag |
| CN103276218A (en) * | 2013-06-05 | 2013-09-04 | 周长祥 | Method for recycling vanadium from vanadium-containing electrolysis aluminum slag ash |
| CN103276218B (en) * | 2013-06-05 | 2015-07-08 | 周长祥 | Method for recycling vanadium from vanadium-containing electrolysis aluminum slag ash |
| CN104017993A (en) * | 2014-06-11 | 2014-09-03 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for preparing vanadium oxide by using sodium salt roasting lixivium of titanium tetrachloride refined tailings |
| CN104017993B (en) * | 2014-06-11 | 2016-11-16 | 攀钢集团攀枝花钢铁研究院有限公司 | The method that vanadium oxide prepared by the sodium roasting leachate of tailings is refined with titanium tetrachloride |
| CN104694811A (en) * | 2015-02-06 | 2015-06-10 | 铜陵百荣新型材料铸件有限公司 | Method for preparing aluminum-vanadium-iron alloy by using aluminium ash and slag generated during production of high vanadium-iron alloy |
| CN104694811B (en) * | 2015-02-06 | 2017-01-11 | 铜陵百荣新型材料铸件有限公司 | Method for preparing aluminum-vanadium-iron alloy by using aluminium ash and slag generated during production of high vanadium-iron alloy |
| CN111304453A (en) * | 2020-04-20 | 2020-06-19 | 承德燕北冶金材料有限公司 | Method for utilizing vanadium-containing waste refractory bricks |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1824607A (en) | Vanadium extraction technology of high aluminium slag | |
| WO2010088863A1 (en) | Method for depositing metal ions | |
| CN1865460A (en) | Method for extracting vanadium,molybdenum,nickel,cobalt,aluminium from waste aluminium base catalyst | |
| CN1752022A (en) | Method of extracting vanadium pentoxide from vanadium ore | |
| CN111705228B (en) | Method for mixed precipitation of tetra-and pentavalent vanadium | |
| CN1479795A (en) | Method for recovering titanium dioxide from titanium dioxide bearing materials like steel making slags | |
| CN1384214A (en) | Carbon reducting roast process of producing RE chloride with mixed RE concentrate | |
| CN116716480B (en) | Method for recycling multiple metals in red mud by high-acid leaching crystallization precipitation method | |
| CN100515955C (en) | Method for preparing iron oxide red from red mud | |
| CN112111661A (en) | Method for extracting vanadium by calcium-manganese composite roasting of vanadium slag | |
| CN109911909B (en) | Recovery processing method of waste sagger in preparation process of lithium cobaltate positive electrode material | |
| CN112981100A (en) | Comprehensive utilization method of red mud by full wet method | |
| CN112410561A (en) | Treatment method for neutralizing gypsum slag in vanadium precipitation wastewater | |
| CN1024565C (en) | Comprechensive utilization of serpentine tailings | |
| CN105948084B (en) | A kind of method that magnesium sulfate monohydrate is produced using copper tailing as raw material | |
| CN102839282B (en) | Method for producing high-purity nano zinc oxide from low-grade zinc oxide ores | |
| CN1057069C (en) | Wet process for preparing industrial pure antimony sulfide by removing load, arsenic, selenium, tin and mercury impurities in antimonic ore | |
| CN112813284A (en) | Method for extracting aluminum from aluminum-containing mineral | |
| CN1555343A (en) | Recovery of titanium from titanium bearing materials | |
| CN110607452B (en) | Comprehensive utilization method of iron ore sintering smoke dust leaching solution | |
| CN109022800B (en) | Ultrasonic-assisted preparation of high-purity V from titanium tetrachloride refining tailings2O5Method (2) | |
| CN102863009B (en) | Method of using low-grade zinc oxide ore to produce high-purity zinc oxide | |
| CN113149048B (en) | Method for treating sodium oxalate solid waste residues in alumina production process | |
| CN114231732A (en) | Method for deeply extracting vanadium from vanadium-containing slurry | |
| CN112011692B (en) | Method for extracting vanadium by composite roasting of solid waste slag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |