CN106755661B - Dry method centrifugal granulation method prepares vanadium slag powder - Google Patents
Dry method centrifugal granulation method prepares vanadium slag powder Download PDFInfo
- Publication number
- CN106755661B CN106755661B CN201611153065.5A CN201611153065A CN106755661B CN 106755661 B CN106755661 B CN 106755661B CN 201611153065 A CN201611153065 A CN 201611153065A CN 106755661 B CN106755661 B CN 106755661B
- Authority
- CN
- China
- Prior art keywords
- vanadium slag
- vanadium
- particle
- slag
- high temperature
- 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.)
- Active
Links
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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Furnace Details (AREA)
Abstract
The present invention relates to dry method centrifugal granulation methods to prepare vanadium slag powder, includes the following steps, S1: being centrifuged to obtain high temperature vanadium slag particle to molten condition Converter Vanadium-bearing Slag；S2: exchanging heat to the high temperature vanadium slag particle that the S1 is obtained using air at room temperature, the vanadium slag particle after collecting heat exchange, and collects the hot-air after heat exchange；S3: the vanadium slag particle after the heat exchange obtained to the S2 is ground, obtained vanadium slag powder.Vanadium slag is very rigid, is directly crushed with crusher, and energy consumption is big, and the service life of crushing plant is very low.Molten condition Converter Vanadium-bearing Slag is directly granulated into the vanadium slag particle of 0.5~3mm of partial size by dry method centrifugal granulation method, is replaced traditional bulk vanadium slag crusher broken process, is not only able to obtain the more tiny slag particle of size, while can substantially reduce energy consumption.
Description
Technical field
The present invention relates to metallurgical engineering technical fields, more particularly to a kind of dry method centrifugal granulation method to prepare vanadium slag powder.
Background technique
Vanadium is a kind of grand strategy value element, referred to as " monosodium glutamate of modern industry ".It has quality hard, fusing point
Height, it is nonmagnetic, the advantages that good toughness, it is widely used in steel and iron industry, chemical industry, aerospace industry, light and textile industries and doctor
Etc. fields.For main preservation in vanadium iron magnetite, China Panzhihua Region possesses v-ti magnetite abundant to vanadium in nature
Ore resources.And the conventional process that vanadium resource is recycled from vanadium iron magnetite is that reduction vanadium iron magnetite obtains vanadium-bearing hot metal, then
Vanadium oxidation in vanadium-bearing hot metal enters in slag, extracts V from vanadium slag later2O5。
Currently, using vanadium slag mainly to use roasting-extract technology in the process for extracting vanadium of raw material.Detailed process are as follows: first will
Vanadium slag is mixed with sodium salt (sodium carbonate, sodium chloride or part of sulfuric acid sodium), and sodium oxide baking is carried out in rotary kiln or multiple hearth furnace,
The purpose is to make the trivalent barium oxide in vanadium slag be converted into pentavalent barium oxide by oxidizing roasting, soluble vanadic acid is generated
Sodium.Clinker obtains sodium vanadate solution through leaching, and then is acidified to obtain sediment vanadic anhydride with sulfuric acid or adds people's ammonia salt simultaneously
(the acid ammonia salt precipitation method) obtain more vanadic acid ammonia.Wherein roasting is to determine vanadium conversion ratio, recovery rate and V2O5The key of production cost
Link.
The cause for influencing roasting conversion rate is known as the phase structure containing vanadium raw materials, the quantity of harmful constituent in vanadium raw materials, adds
Type, maturing temperature, raw material granularity of agent etc..Wherein the granularity of vanadium slag has a great impact to the rate of recovery of vanadium, it is improved
The specific surface area of vanadium slag guarantees that vanadium slag can be fully oxidized during oxidizing roasting.It climbs steel Wu envelope et al. and passes through experimental verification, with
The reduction of vanadium slag granularity, roasting vanadium conversion ratio increase.Vanadium slag should have a suitable particle size range when roasting, to vanadium slag grain in production
Degree is given range (granularity is less than 120um >=78%).
Climbing the type of cooling that steel converter vanadium slag is taken at present is that vanadium slag is laggard with 15~25h of tank natural cooling in slag ladle
Row break process, not only production procedure is longer, and the heat of vanadium slag also absolutely not recycles.Bulk vanadium slag is utilized first broken
Then broken crusher machine is ground into vanadium slag powder with ball mill.Traditional vanadium slag process flow is as shown in Figure 1.It is advantageous that vanadium slag is levigate
In the conversion of solvable vanadium, however due to vanadium iron spinel structure fine and close in vanadium slag, vanadium slag is very rigid, and Grinding procedure energy disappears
Consumption is big, and production cost is higher.In addition, according to the production practices at enterprise scene, the tapping temperature 1350 DEG C~1400 of Converter Vanadium-bearing Slag
DEG C, contain a large amount of sensible heats, recycling value with higher.
Therefore, finding one kind, low energy consumption, while capableing of the preparation process of the vanadium slag powder of recovery section heat, subtracts to enterprise
Few resource consumption improves energy efficiency and means a great, while also complying with the strategic requirement of national " energy-saving and emission-reduction, Green Development ".
Summary of the invention
In view of the above-mentioned problems existing in the prior art, the object of the present invention is to provide one kind, low energy consumption, while can also recycle
The preparation process of the vanadium slag powder of partial heat.
To achieve the above object, the present invention adopts the following technical scheme: dry method centrifugal granulation method prepares vanadium slag powder, including
Following steps:
S1: molten condition Converter Vanadium-bearing Slag is centrifuged to obtain high temperature vanadium slag particle；
S2: exchanging heat to the high temperature vanadium slag particle that the S1 is obtained using air at room temperature, the vanadium slag after collecting heat exchange
Grain, and collect the hot-air after heat exchange；
S3: the vanadium slag particle after the heat exchange obtained to the S2 is ground, obtained vanadium slag powder.
As optimization, molten condition Converter Vanadium-bearing Slag flows to high-speed rotating granulator through tundish in the S1, is being centrifuged
Under the action of power, molten condition Converter Vanadium-bearing Slag splashes, splits into molten drop, and molten drop is gradually cooling in flight course, solidifies, and obtains
High temperature vanadium slag particle.
As optimization, 1350 DEG C~1400 DEG C of the temperature of molten condition Converter Vanadium-bearing Slag in the S1.
As optimization, 600 DEG C~900 DEG C of high temperature vanadium slag particle temperature are obtained in the S1.
As optimization, it is 0.5~3mm that high temperature vanadium slag mean particle size is obtained in the S1.
As optimization, the high temperature vanadium slag particle for obtaining S1 in the S2 enters the fluidized bed with granulator one, carries out
Heat exchange is exchanged heat through fluidized bed and the high temperature vanadium slag particle by the air at room temperature that blower provides, is changed again subsequently into granulator
Heat finally collects the hot-air on granulation furnace top.
As optimization, the air at room temperature temperature that blower provides in the S2 is 25 DEG C.
As optimization, it is higher than 600 DEG C in the hot air temperature that granulation furnace upper collection arrives in the S2.
As optimization, through ball mill ball milling, obtain partial size is the vanadium slag particle after the heat exchange that the S3 obtains the S2
The vanadium slag powder of 74um~120um.
Compared with the existing technology, the present invention at least has the advantages that
1. climbing the type of cooling that steel converter vanadium slag is taken at present is after vanadium slag is mounted in slag ladle with 15~25h of tank natural cooling
Break process is carried out, production procedure is longer, and production efficiency is low.Using dry method centrifugal granulation technique, treating capacity is big, melts vanadium slag
It can divide rapidly, be frozen into vanadium slag particle, substantially increase production efficiency.
2. vanadium slag is very rigid, directly it is crushed with crusher, energy consumption is big, and the service life of crushing plant is very
It is low.Using broken crusher machine bulk vanadium slag, the crusher of different size is needed successively to be crushed vanadium slag, time-consuming, production effect
Rate is low；Molten condition Converter Vanadium-bearing Slag is directly granulated into the vanadium slag particle that partial size is 0.5~3mm by dry method centrifugal granulation method, is replaced
Traditional bulk vanadium slag crusher broken process, is not only able to obtain the more tiny slag particle of size, shortens production procedure, greatly
Production efficiency is improved greatly, while energy consumption can be substantially reduced.
3. climbing the type of cooling that steel converter vanadium slag is taken at present is after vanadium slag is mounted in slag ladle with 15~25h of tank natural cooling
Break process is carried out, the heat of vanadium slag also absolutely not recycles.Using dry method centrifugal granulation technique, the room provided by blower
Warm air exchanges heat through fluidized bed and high temperature vanadium slag particle, exchanges heat again subsequently into top granulation furnace, in granulation furnace upper collection
The hot air temperature arrived is higher than 600 DEG C, has recycled part vanadium slag heat.Being collected into the hot-air that temperature is 600 DEG C or more can be with
For cogeneration, heat exchange recycling heat can also be carried out by heat exchanger, there is very high recycling value.
4. dry method centrifugal granulation obtains vanadium slag particle of the partial size less than 0.5~3mm, it is easy to get through ball milling crusher machine to partial size
The vanadium slag powder of 74um~120um.It being prepared in vanadium slag powder process with tradition, the clinker that crusher obtains carries out ball milling and compares,
Energy consumption reduces.
Detailed description of the invention
Fig. 1 is that tradition prepares vanadium slag powder.
Fig. 2 is the procedure chart that dry method centrifugal granulation method of the present invention prepares vanadium slag powder.
Specific embodiment
Invention is further described in detail below.
Referring to fig. 2, dry method centrifugal granulation method prepares vanadium slag powder, includes the following steps:
S1: molten condition Converter Vanadium-bearing Slag is centrifuged to obtain high temperature vanadium slag particle；Specifically, molten condition Converter Vanadium-bearing Slag
Flow to high-speed rotating granulator through tundish, under the influence of centrifugal force, molten condition Converter Vanadium-bearing Slag splash, split into it is molten
Drop, molten drop is gradually cooling in flight course, solidifies, and obtains high temperature vanadium slag particle.
As optimization, according to the production practices at enterprise scene, 1350 DEG C~1400 DEG C of the temperature of molten condition Converter Vanadium-bearing Slag.
Contain a large amount of sensible heats, recycling value with higher.600 DEG C~900 DEG C of high temperature vanadium slag particle temperature are obtained in the S1.
It 600 DEG C~900 DEG C of vanadium slag particle temperature, will not be bonded between particle, there is no need to increase broken process.
0.5~3mm of high temperature vanadium slag grain diameter is obtained in the S1.
S2: exchanging heat to the high temperature vanadium slag particle that the S1 is obtained using air at room temperature, the vanadium slag after collecting heat exchange
Grain, and collect the hot-air after heat exchange；Specifically, high temperature vanadium slag particle S1 obtained enters the fluidisation with granulator one
Bed, exchanges heat, and is exchanged heat by the air at room temperature that blower provides through fluidized bed and the high temperature vanadium slag particle, subsequently into granulator
It exchanges heat again, finally collects the hot-air on granulation furnace top.
As optimization, the air at room temperature temperature that blower provides in the S2 is 25 DEG C.
It is higher than 600 DEG C in the hot air temperature that granulation furnace upper collection arrives in the S2.The temperature being collected into be 600 DEG C with
On hot-air can be used for cogeneration, heat exchange recycling heat can also be carried out by heat exchanger, has very high recycling sharp
With value.
S3: the vanadium slag particle after the heat exchange obtained to the S2 is ground, obtained vanadium slag powder；Specifically, to institute
Vanadium slag particle after stating the heat exchange that S2 is obtained obtains the vanadium slag powder that partial size is 74um~120um through ball mill ball milling.With vanadium
The reduction of slag particle degree, roasting vanadium conversion ratio increase.Vanadium slag should have suitable particle size range when roasting, and give in production to vanadium slag granularity
Range has been determined (granularity is less than 120um >=78%).
Dry granulation technology is either applied in terms of clinker or metal bath, remains in laboratory stage at present,
There are no large-scale industrial production is realized, by constantly test and data, creative applies it to inventor
Prepare vanadium slag powder.Crusher is widely used, and there are the crusher of different size in all iron and steel enterprises, other without reinvesting
Equipment.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (8)
1. dry method centrifugal granulation method prepares vanadium slag powder, which comprises the steps of:
S1: molten condition Converter Vanadium-bearing Slag is centrifuged to obtain high temperature vanadium slag particle；
S2: exchanging heat to the high temperature vanadium slag particle that the S1 is obtained using air at room temperature, the vanadium slag particle after collecting heat exchange, and
Hot-air after collecting heat exchange；
S3: the vanadium slag particle after the heat exchange obtained to the S2 is ground, obtained vanadium slag powder；
The high temperature vanadium slag particle for obtaining S1 in the S2 enters the fluidized bed with granulator one, exchanges heat, is mentioned by blower
The air at room temperature of confession exchanges heat through fluidized bed and the high temperature vanadium slag particle, exchanges heat again subsequently into granulator, finally collects grain
Change the hot-air on furnace top.
2. dry method centrifugal granulation method as described in claim 1 prepares vanadium slag powder, which is characterized in that molten condition in the S1
Converter Vanadium-bearing Slag flows to high-speed rotating granulator through tundish, and under the influence of centrifugal force, molten condition Converter Vanadium-bearing Slag splashes, divides
It is cleaved into molten drop, molten drop is gradually cooling in flight course, solidifies, and obtains high temperature vanadium slag particle.
3. dry method centrifugal granulation method as claimed in claim 2 prepares vanadium slag powder, which is characterized in that molten condition in the S1
1350 DEG C ~ 1400 DEG C of the temperature of Converter Vanadium-bearing Slag.
4. dry method centrifugal granulation method as claimed in claim 2 prepares vanadium slag powder, which is characterized in that obtain high temperature in the S1
600 DEG C ~ 900 DEG C of vanadium slag particle temperature.
5. dry method centrifugal granulation method as claimed in claim 2 prepares vanadium slag powder, which is characterized in that obtain high temperature in the S1
Vanadium slag mean particle size is 0.5 ~ 3mm.
6. dry method centrifugal granulation method as described in any one in claim 1-5 prepares vanadium slag powder, which is characterized in that in the S2
The air at room temperature temperature that blower provides is 25 DEG C.
7. dry method centrifugal granulation method as claimed in claim 6 prepares vanadium slag powder, which is characterized in that in granulation furnace in the S2
The hot air temperature that upper collection arrives is higher than 600 DEG C.
8. dry method centrifugal granulation method as described in claim 1 prepares vanadium slag powder, which is characterized in that the S3 obtains the S2
Vanadium slag particle after the heat exchange arrived obtains the vanadium slag powder that partial size is 74 μm ~ 120 μm through ball mill ball milling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611153065.5A CN106755661B (en) | 2016-12-14 | 2016-12-14 | Dry method centrifugal granulation method prepares vanadium slag powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611153065.5A CN106755661B (en) | 2016-12-14 | 2016-12-14 | Dry method centrifugal granulation method prepares vanadium slag powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106755661A CN106755661A (en) | 2017-05-31 |
| CN106755661B true CN106755661B (en) | 2018-12-21 |
Family
ID=58888538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611153065.5A Active CN106755661B (en) | 2016-12-14 | 2016-12-14 | Dry method centrifugal granulation method prepares vanadium slag powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106755661B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107520454A (en) * | 2017-09-30 | 2017-12-29 | 重庆赛迪热工环保工程技术有限公司 | A kind of metal granulating system and method |
| CN110016529B (en) * | 2019-05-31 | 2020-01-17 | 安徽中巨机电设备有限公司 | Slag pot on-line cleaning device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102559957A (en) * | 2012-02-09 | 2012-07-11 | 南京凯盛开能环保能源有限公司 | Centrifugal type fusion slag quenching and dry type granulating, and waste heat recovery power generation system and method |
| CN102827969A (en) * | 2012-09-06 | 2012-12-19 | 西安交通大学 | Afterheat recovery system and method of dry granulating liquid slag |
| CN103451329A (en) * | 2013-09-13 | 2013-12-18 | 北京科技大学 | Method for separating vanadium resource from vanadium slag by virtue of supergravity |
| CN105603135A (en) * | 2016-03-11 | 2016-05-25 | 西安交通大学 | High-temperature liquid-state slag dry type centrifugation and granulation waste heat recycling system and method |
-
2016
- 2016-12-14 CN CN201611153065.5A patent/CN106755661B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102559957A (en) * | 2012-02-09 | 2012-07-11 | 南京凯盛开能环保能源有限公司 | Centrifugal type fusion slag quenching and dry type granulating, and waste heat recovery power generation system and method |
| CN102827969A (en) * | 2012-09-06 | 2012-12-19 | 西安交通大学 | Afterheat recovery system and method of dry granulating liquid slag |
| CN103451329A (en) * | 2013-09-13 | 2013-12-18 | 北京科技大学 | Method for separating vanadium resource from vanadium slag by virtue of supergravity |
| CN105603135A (en) * | 2016-03-11 | 2016-05-25 | 西安交通大学 | High-temperature liquid-state slag dry type centrifugation and granulation waste heat recycling system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106755661A (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102010987B (en) | Vanadium and titanium pellet ore production process | |
| CN106065435A (en) | A kind of method and system processing vanadium slag | |
| CN105886786A (en) | Method for strengthening vanadium extraction from vanadium slags of converter through calcification | |
| CN106755661B (en) | Dry method centrifugal granulation method prepares vanadium slag powder | |
| CN105925813A (en) | Vanadium slag comprehensive treatment method and application thereof | |
| CN103305706B (en) | Method for calcium-roasting, cooling and extracting vanadium out of vanadium slag | |
| CN107090551A (en) | A kind of method of the direct vanadium extraction of vanadium titano-magnetite | |
| CN108179265A (en) | A kind of method from separation and Extraction vanadium in material containing chrome alum | |
| CN106995879A (en) | A kind of low-grade Oxidation Leaching of sodium containing chromic vanadium-titanium ferroferrite extraction vanadium method | |
| CN107267766A (en) | A kind of method of Selective Separation vanadium, titanium, iron from modified vanadium slag | |
| CN109400185A (en) | A kind of preparation process of lightweight white fused alumina | |
| CN105838839B (en) | It prepares the method for granulated iron and prepares the system of granulated iron | |
| CN107354304B (en) | A kind of method of Porous Medium Adsorption separation Vanadium in Vanadium Residue resource | |
| CN106636627A (en) | Method for producing cement clinker and oxide pellets | |
| RU2638487C2 (en) | Method for manufacturing agglomerates and reduced iron | |
| CN110055417A (en) | A method of efficiently separating vanadium titanium from vanadium slag mixing | |
| CN109722531A (en) | Vanadium titano-magnetite process for extracting vanadium | |
| CN106830721A (en) | A kind of steel-making slag powder and its preparation method and application | |
| CN104911342B (en) | A kind of preparation method of the pelletizing containing chromic vanadium-titanium ferroferrite of boracic | |
| CN100449010C (en) | Process for smelting ferrovanadium by extraction of vanadium from vanadium-containing errophosphorus | |
| CN205990444U (en) | Vanadium slag is carried out with the system of integrated treatment | |
| CN110042195A (en) | The method that molten iron adds lime production calcic vanadium slag and directly leaches vanadium extraction | |
| CN105969928B (en) | Prepare system and its application of reduced iron | |
| CN106957958A (en) | A kind of method of the low-grade Oxidation Leaching of calcification containing chromic vanadium-titanium ferroferrite vanadium extraction | |
| CN107312941A (en) | A kind of method that direct shotting produces acid-dissolved titanium slag powder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |