CN108251582A - A kind of hot vanadium slag treatment method - Google Patents
A kind of hot vanadium slag treatment method Download PDFInfo
- Publication number
- CN108251582A CN108251582A CN201810115614.2A CN201810115614A CN108251582A CN 108251582 A CN108251582 A CN 108251582A CN 201810115614 A CN201810115614 A CN 201810115614A CN 108251582 A CN108251582 A CN 108251582A
- Authority
- CN
- China
- Prior art keywords
- vanadium slag
- flue gas
- vanadium
- treatment method
- hot
- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/08—Cooling 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
- C22B1/005—Preliminary treatment of scrap
-
- 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
- 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
-
- 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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Abstract
The present invention relates to industrial waste residue disposal fields, and in particular to a kind of hot vanadium slag treatment method.Mainly include step：It by hot vanadium slag slow cooling 6h~12h, walks and rolls repeatedly, be cooled to≤900 DEG C, granularity is in below 200mm；Vanadium slag secondary cooling is sent after carrying out crushing-magnetic selection again to vanadium extraction processing.The method of the present invention accurately controls vanadium slag temperature retention time, ensure vanadium slag in the case where follow-up vanadium extraction reaches maximum vanadium conversion ratio but also with certain mobility, to avoid the generation that bulk slag sticks together, conducive to follow-up break process.Deslagging and crushing operation are carried out, and set dust removal installation between the vanadium slag processing of closing, avoid pollution of the airborne dust to power house environment.
Description
Technical field
The present invention relates to industrial waste residue disposal fields, and in particular to a kind of hot vanadium slag treatment method.
Background technology
The processing mode of vanadium slag is usually the vanadium slag first slow cooling in slag ladle at present, then transports to vanadium slag Treatment stations and carries out heat
It sprinkles, then is pounded by water-spraying control, drop weight rammer and vanadium slag to be made to be fragmented into after fritter carry out crushing-magnetic selection processing again.Topple over and drop weight rammer is pounded
During can generate a large amount of dust and noise and long processing period, inefficiency occupies a large amount of place.
Research at present about vanadium slag processing is seldom, and the present invention has found that vanadium slag treatment process is improper, meeting in the course of the research
Leading to treated, vanadium slag is difficult to be directly entered follow-up process for extracting vanadium, for example it is difficult to take into account vanadium recovery rate and ball milling energy consumption problem.
In addition, the slow cooling of vanadium slag makes vanadic spinel particle constantly grow up, and the growing state of vanadic spinel particle directly affects vanadium conversion
Rate, slow cooling need suitable temperature and time, and the time is too short to reduce vanadium conversion ratio, and overlong time temperature is too low to cause vanadium slag
Crust, topples over difficulty, and forms bulk slag after toppling over and stick together, and needs processing of dropping hammer.
Existing vanadium slag processing mode temperature retention time span is very big, does not carry out accurate time and temperature control, follow-up vanadium
The effect of Slag treatment and vanadium conversion ratio is all unstable.
Invention content
The defects of for vanadium slag treatment method, this application provides a kind of efficient hot vanadium slag treatment methods.
The object of the present invention is to provide a kind of hot vanadium slag treatment methods.
The method according to the present invention that hot vanadium slag is handled before converter extracting vanadium, mainly includes the following steps that：
(1) the hot vanadium slag slow cooling that will be come out of the stove, temperature retention time are controlled in 6h~12h；
(2) vanadium slag after slow cooling is shakeout, carries out walking repeatedly and roll；
(3) water-spraying control is carried out to the vanadium slag after rolling, is cooled to≤900 DEG C, granularity is in 200mm hereinafter, selecting slag steel；
(4) by vanadium slag secondary cooling, water-spraying control is within 80 DEG C；
(5) vanadium slag after secondary cooling is crushed to≤50mm, and is sent after selecting bulk slag steel to vanadium extraction processing.
Efficient hot vanadium slag treatment method according to the present invention, wherein, in the step (1), temperature retention time control
In 8h~10h.
Efficient hot vanadium slag treatment method according to the present invention, wherein, in the step (3), be cooled to 200 DEG C~
800℃。
Efficient hot vanadium slag treatment method according to the present invention, wherein, in the step (3), be cooled to 300 DEG C~
400℃。
Efficient hot vanadium slag treatment method according to the present invention, wherein, in the step (4), pass through rotary type
Water cover carries out water-spraying control.
Efficient hot vanadium slag treatment method according to the present invention, in the envelope for being mounted with dry flue gas pipeline and wet flue gas pipeline
It closes and implements hot vanadium slag processing procedure in space.
Efficient hot vanadium slag treatment method according to the present invention, dry flue gas and wet flue gas pipe pass through dry flue gas pipeline respectively
It is discharged with wet flue gas pipeline, the different phase generated between the dry flue gas pipeline and wet flue gas pipeline according to dry, wet flue gas
Carry out automation switching.
Efficient hot vanadium slag treatment method according to the present invention, wherein, the rotary type water cover rotating range is
0~90 °, the row's of setting steam pipe line in rotary cover is discharged by wind turbine auxiliary exhaust from chimney.
Efficient hot vanadium slag treatment method according to the present invention, wherein, it is secondary cold the vanadium slag after rolling is transported to
But it during, deslagging and pushes away the dry flue gas of slag generation and is collected by bag filter, the wet cigarette generated during water-spraying control
Gas is dusted by acoustic agglomeration facility, and dry and wet flue gas ash removal facility is switched over by automation control.
Specific embodiment according to the present invention can implement the efficient hot vanadium slag processing side in enclosure space
Method is equipped with the dedusting pipeline of dry flue gas and wet flue gas in space, has conversion valve between dry flue gas and wet flue gas pipeline, according to place
The different phase that dry and wet flue gas generates in reason flow carries out automation switching.
The efficient hot vanadium slag treatment method of the present invention has following technical advantage：
(1) take up little area, can be arranged before the converter extracting vanadium of spaces compact, slag tap, slow cooling, roll broken and secondary cooling it
Between Connection between Processes it is close, accurately control the time of each flow.
(2) vanadium slag temperature retention time is accurately controlled, ensures vanadium slag in the case where follow-up vanadium extraction reaches maximum vanadium conversion ratio again
Has certain mobility, to avoid the generation that bulk slag sticks together, conducive to follow-up break process.
(3) deslagging and crushing operation are carried out, and set dust removal installation between the processing of the vanadium slag of closing, avoids airborne dust to workshop
The pollution of environment.
(4) dry and wet flue gas can be alternately produced in vanadium slag processing procedure, the characteristics of dry flue gas is dust content height (about 3g/
m3), but easily handled by bag filter；The characteristics of wet flue gas is low (the about 100mg/m of dust content3), but bag filter
It can not handle.As two kinds of flue gas mixed processings can be brought, line clogging, dust removal installation investment is big, occupation of land is big and a large amount of mud can not
The problem of processing.The time point that monitoring dry and wet flue gas of the invention accurate generates, using automation control to dry and wet dust removal installation into
Row switching solves the problems, such as mixed flue gas processing and ensures that final smoke emissioning concentration is respectively less than 20mg/m3。
(5) vanadium slag roll by the way of mechanization broken, treatment effeciency is high, solves because temperature retention time is long
And being formed needs the problem of inefficiency, dust and the noise pollution for handling and bringing are serious and occupation of land is big of dropping hammer after slag sticks together.
(6) broken vanadium slag temperature is rolled at 300~400 DEG C, and setting rotary type water cover had carried out secondary cooling both
Can complete vanadium slag be quickly cooled down and fragmentation, and steam can be made to discharge in a organized way.
Description of the drawings
Fig. 1 shows the flow chart of according to embodiments of the present invention 1 hot vanadium slag treatment method.
Fig. 2 shows the vanadium slag roasting conversion rate of different temperature retention times (6h, 8h, 10h, 12h).
Specific embodiment
As shown in Figure 1, the method according to the present invention that hot vanadium slag is handled before converter extracting vanadium, mainly including following step
Suddenly：
(1) vanadium slag tank is hung in into slag ladle slow cooling area by overhead traveling crane after converter extracting vanadium slag and carries out slow cooling, temperature retention time point
It does not control in 6h, 8h, 10h, 12h；
(2) the vanadium slag tank after slow cooling by overhead traveling crane be hung to vanadium slag processing between, vanadium slag treatment bench is poured onto by ladle tunbler, is passed through
It pushes away slag device to shakeout vanadium slag, carries out walking repeatedly to the vanadium slag on treatment bench by rail mounted breaker and roll；
(3) spray equipment between vanadium slag processing carries out water-spraying control to the vanadium slag after rolling, and is cooled to 200 DEG C respectively,
300,400 DEG C, 800 DEG C, 900 DEG C, granularity is in 200mm hereinafter, selecting slag steel；
(4) vanadium slag slot is hoisted to secondary cooling zone, water-spraying control is carried out within 80 DEG C by rotary type water cover；
(5) vanadium slag after secondary cooling is crushed to 50mm hereinafter, and select bulk slag steel send to vanadium extraction handle.
The method according to the present invention that hot vanadium slag is handled before converter extracting vanadium, by pushing away slag device by vanadium slag from treatment bench
It is pushed into vanadium slag slot, deslagging and pushes away the dry flue gas generated during slag and collected by bag filter, generated during water-spraying control
Wet flue gas be dusted by acoustic agglomeration facility, dry or wet flue gas dust removal installation is switched over by automation control.
Efficient hot vanadium slag treatment method according to the present invention, wherein, the hot vanadium slag slow cooling in tank come out of the stove, to not
It is sampled with the vanadium slag under temperature retention time and carries out viscosity test, vanadic spinel particle electron-microscope scanning and roasting vanadium conversion ratio experiment,
Result of study shows：It is vanadic spinel granule growth stage within temperature retention time 8h, 8h changes unobvious later；Within slow cooling 8h
Slag specimen with temperature retention time extend roasting conversion rate become larger, slow cooling 8h more than vanadium slags roasting conversion rate variation unobvious；It is slow
The slag specimen of cold more than 12h is greatly reduced under flowing, viscosity significantly increases, and is easily formed slag and is sticked together, so it is slow to take slow cooling 8h~10h
The Best Times of cooling working procedure.
As shown in Fig. 2, vanadium slag roasting conversion rate is obtained when changing over time trend based on the following conditions：
(1) vanadium slag of different temperature retention times is taken.
(2) by vanadium slag sample crushing grinding into -160 mesh powder, magnetic separation terminates until MFe contents are no more than 5%.
(3) according to Na/V (mol)=2 with addition of industrial sodium carbonate, then vanadium slag/residue (butt)=1 is pressed:1 respectively with addition of residual
Slag is uniformly mixed.
(4) sample is placed in oxidizing roasting in Muffle furnace, control time：Room temperature to 800 DEG C (30 minutes), 800 DEG C (150
~170 minutes), 800 DEG C to 600 DEG C (30 minutes).
(5) quick tapping is air-cooled when roasting material and cool to 600 DEG C, to room temperature after be ground to granularity by hand and be no more than
100 mesh.
Claims (9)
1. a kind of hot vanadium slag treatment method, which is characterized in that the described method comprises the following steps：
(1) the hot vanadium slag slow cooling that will be come out of the stove, temperature retention time are controlled in 6h~12h；
(2) vanadium slag after slow cooling is shakeout, carries out walking repeatedly and roll；
(3) water-spraying control is carried out to the vanadium slag after rolling, is cooled to≤900 DEG C, granularity≤200mm selects slag steel；
(4) by vanadium slag secondary cooling, water-spraying control is to≤80 DEG C；
(5) vanadium slag after secondary cooling is crushed to≤50mm, and is sent after selecting bulk slag steel to vanadium extraction processing.
2. hot vanadium slag treatment method according to claim 1, which is characterized in that in the step (1), temperature retention time
Control is in 8h~10h.
3. hot vanadium slag treatment method according to claim 1, which is characterized in that in the step (3), be cooled to
200 DEG C~800 DEG C.
4. hot vanadium slag treatment method according to claim 3, which is characterized in that in the step (3), be cooled to
300 DEG C~400 DEG C.
5. hot vanadium slag treatment method according to claim 1, which is characterized in that in the step (4), by that can revolve
Rotatable water cover carries out water-spraying control.
6. hot vanadium slag treatment method according to claim 5, which is characterized in that the rotary type water cover rotates model
It is 0~90 ° to enclose, the row's of setting steam pipe line in rotary cover.
7. hot vanadium slag treatment method according to claim 1, which is characterized in that be mounted with dry flue gas pipeline and wet cigarette
Implement hot vanadium slag processing procedure in the enclosure space of feed channel.
8. hot vanadium slag treatment method according to claim 7, which is characterized in that dry flue gas and wet flue gas pipe pass through respectively
Dry flue gas pipeline and wet flue gas pipeline are discharged, and are generated between the dry flue gas pipeline and wet flue gas pipeline according to dry, wet flue gas
Different phase carry out automation switching.
9. hot vanadium slag treatment method according to claim 7, which is characterized in that the vanadium slag after rolling is being transported to two
It during secondary cooling, deslagging and pushes away the dry flue gas of slag generation and is collected by bag filter, generate during water-spraying control
Wet flue gas is dusted by acoustic agglomeration facility.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810115614.2A CN108251582A (en) | 2018-02-06 | 2018-02-06 | A kind of hot vanadium slag treatment method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810115614.2A CN108251582A (en) | 2018-02-06 | 2018-02-06 | A kind of hot vanadium slag treatment method |
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| CN108251582A true CN108251582A (en) | 2018-07-06 |
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| CN201810115614.2A Pending CN108251582A (en) | 2018-02-06 | 2018-02-06 | A kind of hot vanadium slag treatment method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109395514A (en) * | 2018-10-11 | 2019-03-01 | 广州华鑫工程技术有限公司 | For handling the device and method for the dust that hot slag generates |
| CN112458298A (en) * | 2020-10-27 | 2021-03-09 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for extracting vanadium by direct sodium treatment of thermal vanadium slag |
| CN113198607A (en) * | 2021-04-28 | 2021-08-03 | 河南省煜晟镍业有限责任公司 | Low nickel matte comprehensive treatment method |
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|---|---|---|---|---|
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-
2018
- 2018-02-06 CN CN201810115614.2A patent/CN108251582A/en active Pending
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| JP2005256083A (en) * | 2004-03-11 | 2005-09-22 | Nippon Steel Corp | Method for cooling iron-making slag |
| CN102191343A (en) * | 2010-03-08 | 2011-09-21 | 中冶建筑研究总院有限公司 | Aircooled crushing device and method of molten steel slag |
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Non-Patent Citations (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109395514A (en) * | 2018-10-11 | 2019-03-01 | 广州华鑫工程技术有限公司 | For handling the device and method for the dust that hot slag generates |
| CN112458298A (en) * | 2020-10-27 | 2021-03-09 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for extracting vanadium by direct sodium treatment of thermal vanadium slag |
| CN113198607A (en) * | 2021-04-28 | 2021-08-03 | 河南省煜晟镍业有限责任公司 | Low nickel matte comprehensive treatment method |
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Application publication date: 20180706 |
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