CN106367604A - Method for extracting vanadium pentoxide from secondary vanadium slag - Google Patents
Method for extracting vanadium pentoxide from secondary vanadium slag Download PDFInfo
- Publication number
- CN106367604A CN106367604A CN201610748549.8A CN201610748549A CN106367604A CN 106367604 A CN106367604 A CN 106367604A CN 201610748549 A CN201610748549 A CN 201610748549A CN 106367604 A CN106367604 A CN 106367604A
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- China
- Prior art keywords
- vanadium
- slag
- vanadium slag
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- ammonium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
-
- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention belongs to the technical field of vanadium ore processing, and particularly relates to a method for extracting vanadium pentoxide from secondary vanadium slag. The method comprises the following steps of regulating content of vanadium in the secondary vanadium slag, grinding the secondary vanadium slag, mixing the ground secondary vanadium slag with sodium carbonate to obtain a mixture, heating the mixture through a rotary kiln, adding water into the mixture, and filtering the mixture to obtain filtrate; adding calcium chloride into the filtrate to generate precipitates, regulating the pH value, adding ammonium chloride to obtain ammonium polyvanadate; and heating the ammonium polyvanadate to dehydrate and remove ammonium, thereby obtaining the vanadium pentoxide. According to the method for extracting vanadium pentoxide from secondary vanadium slag, vanadium can be effectively extracted from the secondary vanadium slag with relative low vanadium content, so that the secondary vanadium slag is changed into things of value, and therefore, a utilization rate of natural resources is increased.
Description
Technical field
The invention belongs to navajoite processing technique field and in particular to a kind of from secondary vanadium slag extract vanadic anhydride side
Method.
Background technology
Vanadium metal plays the role of important in steel and iron industry.Vanadium is typically association in other ore deposits, before producing vanadium,
Need first to obtain vanadium slag from ore processing containing vanadium, then obtain vanadic anhydride from vanadium slag processing.Obtained by ore processing containing vanadium
Vanadium slag is primary slag, and vanadium content is higher, extracts relatively easy.But vanadium slag passes through once to extract it is impossible to extract vanadium slag completely
In vanadium.Vanadium slag after by once extracting is referred to as secondary vanadium slag.Because in secondary vanadium slag, vanadium content is low, using commonly use at present
Extracting method, relatively costly, do not have real economy to be worth.
Content of the invention
The present invention is directed to the problems referred to above, provides a kind of method extracting vanadic anhydride from secondary vanadium slag, to secondary vanadium
Slag extracts while obtaining high-recovery, also has relatively low cost.
The present invention is achieved in that
A kind of method extracting vanadic anhydride from secondary vanadium slag, comprises the following steps:
S1, detects the content of secondary Vanadium in Vanadium Residue, when content of vanadium is less than 4% by weight, adds a vanadium slag, makes mixing vanadium
The content of vanadium of slag is more than 4% by weight；
S2, mixing vanadium slag is ground into 80-120 mesh post-drying, and water content is less than 5% by weight；
S3, by mixing vanadium slag and sodium carbonate, with mass ratio 100:1.5-3 mixing；
S4, feeds the mixture into rotary kiln, is heated to 790-830 DEG C of insulation, is measured by sampling, and v element is converted into navo3
Reach and when more than 80%, stop heating；
S5, the mixture after heating is mixed with water 1:3 in mass ratio, obtains filtrate after filtration；
S6, adds calcium chloride in filtrate, generates calcium phosphate precipitation, when in detection filtrate, phosphorus content is less than 0.02 g/l,
Take out supernatant；
S7, adds sulphuric acid, adjustment ph value is standby after 2-3 in supernatant；
S8, detects navo3Concentration, by navo in liquid30.9-1.3 times of quality adds ammonium chloride, overanxious after take filtering residue to obtain
To ammonium poly-vanadate；
S9, ammonium poly-vanadate adds melting furnace thermal dehydration to obtain finished product vanadic anhydride after taking off ammonium.
Further, in s4 step, v element is converted into navo3Reach and when more than 90%, stop heating.
The method extracting vanadic anhydride from secondary vanadium slag of the present invention, is mixed with a vanadium slag by secondary vanadium slag,
The content of adjustment mixing Vanadium in Vanadium Residue, can extract the vanadium in secondary vanadium slag to greatest extent.Carried out by knot mixing vanadium slag
Grind, the conversion ratio of mixing Vanadium in Vanadium Residue can be improved.By adding sodium carbonate, it is right to prevent from having generated during the course of the reaction
The material that environment is harmful to, or generate the material that some later stages are difficult to remove.Heated by adding rotary kiln, can be in energy-conservation
On the basis of improve vanadium conversion ratio, thus improving the recycled in its entirety rate of vanadium.After mixture after heating adds water, add chlorine
Change calcium, effectively remove the P elements in solution, reduce harmful element content in finished product.After sulphuric acid adjusts ph value, add
Ammonium chloride, generates ammonium poly-vanadate precipitation, effectively removes unwanted other materials, makees for obtaining highly purified vanadic anhydride
Good preparation.Finally heated dehydration obtains finished product vanadic anhydride after taking off ammonium.The present invention extracts five oxidations two from secondary vanadium slag
The method of vanadium, effectively can propose vanadium from the relatively low secondary vanadium slag of content, so that secondary vanadium slag is turned waste into wealth.Improve nature
The utilization rate of resource.
Specific embodiment
Embodiment 1
The method extracting vanadic anhydride from secondary vanadium slag of the present embodiment, comprises the following steps:
S1, detects the content of secondary Vanadium in Vanadium Residue, when content of vanadium is less than 4% by weight, adds a vanadium slag, makes mixing vanadium
The content of vanadium of slag is more than 4% by weight；
S2, mixing vanadium slag is ground into 80 mesh post-dryings, and water content is less than 5% by weight；
S3, by mixing vanadium slag and sodium carbonate, with mass ratio 100:1.5 mixing；
S4, feeds the mixture into rotary kiln, is heated to 790 DEG C of insulations, is measured by sampling, and v element is converted into navo3Reach
Stop heating when more than 80%；
S5, the mixture after heating is mixed with water 1:3 in mass ratio, obtains filtrate after filtration；
S6, adds calcium chloride in filtrate, generates calcium phosphate precipitation, when in detection filtrate, phosphorus content is less than 0.02 g/l,
Take out supernatant；
S7, adds sulphuric acid in supernatant, and adjustment ph value is standby after 2；
S8, detects navo3Concentration, by navo in liquid30.9 times of quality addition ammonium chloride, overanxious after to take filtering residue to obtain many
Ammonium vanadate；
S9, ammonium poly-vanadate adds melting furnace thermal dehydration to obtain finished product vanadic anhydride after taking off ammonium.
Embodiment 2
The method extracting vanadic anhydride from secondary vanadium slag of the present embodiment, comprises the following steps:
S1, detects the content of secondary Vanadium in Vanadium Residue, when content of vanadium is less than 4% by weight, adds a vanadium slag, makes mixing vanadium
The content of vanadium of slag is more than 4% by weight；
S2, mixing vanadium slag is ground into 100 mesh post-dryings, and water content is less than 5% by weight；
S3, by mixing vanadium slag and sodium carbonate, with mass ratio 100:2 mixing；
S4, feeds the mixture into rotary kiln, is heated to 800 DEG C of insulations, is measured by sampling, and v element is converted into navo3Reach
Stop heating when more than 80%；
S5, the mixture after heating is mixed with water 1:3 in mass ratio, obtains filtrate after filtration；
S6, adds calcium chloride in filtrate, generates calcium phosphate precipitation, when in detection filtrate, phosphorus content is less than 0.02 g/l,
Take out supernatant；
S7, adds sulphuric acid in supernatant, and adjustment ph value is standby after 1.5；
S8, detects navo3Concentration, by navo in liquid31.1 times of quality addition ammonium chloride, overanxious after to take filtering residue to obtain many
Ammonium vanadate；
S9, ammonium poly-vanadate adds melting furnace thermal dehydration to obtain finished product vanadic anhydride after taking off ammonium.
Embodiment 3
The method extracting vanadic anhydride from secondary vanadium slag of the present embodiment, comprises the following steps:
S1, detects the content of secondary Vanadium in Vanadium Residue, when content of vanadium is less than 4% by weight, adds a vanadium slag, makes mixing vanadium
The content of vanadium of slag is more than 4% by weight；
S2, mixing vanadium slag is ground into 120 mesh post-dryings, and water content is less than 5% by weight；
S3, by mixing vanadium slag and sodium carbonate, with mass ratio 100:3 mixing；
S4, feeds the mixture into rotary kiln, is heated to 830 DEG C of insulations, is measured by sampling, and v element is converted into navo3Reach
Stop heating when more than 80%；
S5, the mixture after heating is mixed with water 1:3 in mass ratio, obtains filtrate after filtration；
S6, adds calcium chloride in filtrate, generates calcium phosphate precipitation, when in detection filtrate, phosphorus content is less than 0.02 g/l,
Take out supernatant；
S7, adds sulphuric acid in supernatant, and adjustment ph value is standby after 3；
S8, detects navo3Concentration, by navo in liquid31.3 times of quality addition ammonium chloride, overanxious after to take filtering residue to obtain many
Ammonium vanadate；
S9, ammonium poly-vanadate adds melting furnace thermal dehydration to obtain finished product vanadic anhydride after taking off ammonium.
Embodiment 4
The method extracting vanadic anhydride from secondary vanadium slag of the present embodiment, comprises the following steps:
S1, detects the content of secondary Vanadium in Vanadium Residue, when content of vanadium is less than 4% by weight, adds a vanadium slag, makes mixing vanadium
The content of vanadium of slag is more than 4% by weight；
S2, mixing vanadium slag is ground into 80-120 mesh post-drying, and water content is less than 5% by weight；
S3, by mixing vanadium slag and sodium carbonate, with mass ratio 100:1.5-3 mixing；
S4, feeds the mixture into rotary kiln, is heated to 790-830 DEG C of insulation, is measured by sampling, and v element is converted into navo3
Reach and when more than 90%, stop heating；
S5, the mixture after heating is mixed with water 1:3 in mass ratio, obtains filtrate after filtration；
S6, adds calcium chloride in filtrate, generates calcium phosphate precipitation, when in detection filtrate, phosphorus content is less than 0.02 g/l,
Take out supernatant；
S7, adds sulphuric acid, adjustment ph value is standby after 2-3 in supernatant；
S8, detects navo3Concentration, by navo in liquid30.9-1.3 times of quality adds ammonium chloride, overanxious after take filtering residue to obtain
To ammonium poly-vanadate；
S9, ammonium poly-vanadate adds melting furnace thermal dehydration to obtain finished product vanadic anhydride after taking off ammonium.
The method extracting vanadic anhydride from secondary vanadium slag of the present invention, can be low from grade, containing vanadium below 3%
Vanadic anhydride is extracted, extraction recovery is high simultaneously in secondary vanadium slag.The waste after extracting method extraction through the present invention,
Vanadium content only 0.3-0.35%, makes the most v elements in vanadium slag be extracted utilization.
Claims (2)
1. a kind of method extracting vanadic anhydride from secondary vanadium slag, is characterized in that following steps:
S1, detects the content of secondary Vanadium in Vanadium Residue, when content of vanadium is less than 4% by weight, adds a vanadium slag, makes mixing vanadium slag
Content of vanadium is more than 4% by weight；
S2, mixing vanadium slag is ground into 80-120 mesh post-drying, and water content is less than 5% by weight；
S3, by mixing vanadium slag and sodium carbonate, with mass ratio 100:1.5-3 mixing；
S4, feeds the mixture into rotary kiln, is heated to 790-830 DEG C of insulation, is measured by sampling, and v element is converted into navo3 and reaches
Stop heating when more than 80%；
S5, the mixture after heating is mixed with water 1:3 in mass ratio, obtains filtrate after filtration；
S6, adds calcium chloride in filtrate, generates calcium phosphate precipitation, when phosphorus content is less than 0.02 g/l in detection filtrate, takes out
Supernatant；
S7, adds sulphuric acid, adjustment ph value is standby after 2-3 in supernatant；
S8, detects navo3Concentration, by navo in liquid30.9-1.3 times of quality adds ammonium chloride, overanxious after to take filtering residue to obtain many
Ammonium vanadate；
S9, ammonium poly-vanadate adds melting furnace thermal dehydration to obtain finished product vanadic anhydride after taking off ammonium.
2. the method extracting vanadic anhydride from secondary vanadium slag according to claim 1, is characterized in that vanadium unit in s4 step
Element is converted into navo3Reach and when more than 90%, stop heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610748549.8A CN106367604A (en) | 2016-08-27 | 2016-08-27 | Method for extracting vanadium pentoxide from secondary vanadium slag |
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| CN201610748549.8A CN106367604A (en) | 2016-08-27 | 2016-08-27 | Method for extracting vanadium pentoxide from secondary vanadium slag |
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| CN201610748549.8A Pending CN106367604A (en) | 2016-08-27 | 2016-08-27 | Method for extracting vanadium pentoxide from secondary vanadium slag |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108383165A (en) * | 2018-04-26 | 2018-08-10 | 攀枝花市红杉钒制品有限公司 | A kind of method that ferric vandate prepares and produces vanadic anhydride using it |
| CN109234521A (en) * | 2018-11-28 | 2019-01-18 | 承德燕北冶金材料有限公司 | A method of the vanadium extraction again of the ferric vandate of byproduct containing vanadium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899582A (en) * | 2010-07-30 | 2010-12-01 | 四川省川威集团有限公司 | Method for extracting vanadium pentoxide from vanadium slag |
| CN103014361A (en) * | 2013-01-11 | 2013-04-03 | 西昌新钒钛有限公司 | Process for preparing vanadium pentoxide through leaching vanadium slag roasting clinker in metatitanic acid washing water |
| CN103194603A (en) * | 2013-04-01 | 2013-07-10 | 攀枝花学院 | Preparation method of high-purity vanadium pentoxide |
| CN105331822A (en) * | 2015-11-26 | 2016-02-17 | 河北钢铁股份有限公司承德分公司 | Method for recycling vanadium in waste containing vanadium |
-
2016
- 2016-08-27 CN CN201610748549.8A patent/CN106367604A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899582A (en) * | 2010-07-30 | 2010-12-01 | 四川省川威集团有限公司 | Method for extracting vanadium pentoxide from vanadium slag |
| CN103014361A (en) * | 2013-01-11 | 2013-04-03 | 西昌新钒钛有限公司 | Process for preparing vanadium pentoxide through leaching vanadium slag roasting clinker in metatitanic acid washing water |
| CN103194603A (en) * | 2013-04-01 | 2013-07-10 | 攀枝花学院 | Preparation method of high-purity vanadium pentoxide |
| CN105331822A (en) * | 2015-11-26 | 2016-02-17 | 河北钢铁股份有限公司承德分公司 | Method for recycling vanadium in waste containing vanadium |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108383165A (en) * | 2018-04-26 | 2018-08-10 | 攀枝花市红杉钒制品有限公司 | A kind of method that ferric vandate prepares and produces vanadic anhydride using it |
| CN109234521A (en) * | 2018-11-28 | 2019-01-18 | 承德燕北冶金材料有限公司 | A method of the vanadium extraction again of the ferric vandate of byproduct containing vanadium |
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Application publication date: 20170201 |
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