CN110205487A - The production method of fluorine-containing vanadium-titanium pellet - Google Patents
The production method of fluorine-containing vanadium-titanium pellet Download PDFInfo
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- CN110205487A CN110205487A CN201910604596.9A CN201910604596A CN110205487A CN 110205487 A CN110205487 A CN 110205487A CN 201910604596 A CN201910604596 A CN 201910604596A CN 110205487 A CN110205487 A CN 110205487A
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- fluorine
- containing vanadium
- production method
- pellet
- pelletizing
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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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
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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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
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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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/243—Binding; Briquetting ; Granulating with binders inorganic
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- Manufacturing & Machinery (AREA)
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- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to pellet field of smelting, especially a kind of production method of the fluorine-containing vanadium-titanium pellet for the metallurgical performance for being effectively improved high titanium clinker, include the following steps: 93~97 parts by weight of sefstromite concentrate fine ore, after 1~3 part of fluorite miberal powder and 1~3 part of bentonite mix well, moisten 5~10min of mill through ball mill, then water pelletizing is added to obtain the pelletizing of 8~16mm through disk, wherein, moisture content in green-ball is 6~10%, the temperature that green-ball is dried is 200~600 DEG C, the dry time is 10~15min, pelletizing preheating temperature is 800~1000 DEG C, preheating time is 15~25min, it is 1150~1300 DEG C that pelletizing, which carries out maturing temperature, calcining time is 20~40min, contained after roasting Fluorine vanadium-titanium pellet.The present invention solves the problems, such as the use of fluorite fine ore, can more uniform raising clinker CaF2The metallurgical performance that blast furnace process can also be effectively improved high titanium clinker is added in content, fluorine-containing vanadium-titanium pellet, is particularly suitable among the production preparation of fluorine-containing vanadium-titanium pellet.
Description
Technical field
The present invention relates to pellet field of smelting, especially a kind of production method of fluorine-containing vanadium-titanium pellet.
Background technique
Due to the mineral structure of ferrotitanium symbiosis in vanadium titano-magnetite, cause iron content in vanadium titano-magnetite lower, Ti content
It is higher, it causes the smelting difficulty in blast furnace process big, is mainly manifested in clinker TiO2Content is up to 20% or more, and clinker melts
It is high to change warm-natured degree, poor fluidity, slag iron separation is difficult, and iron loss is high.In order to improve the metallurgical performance of high titanium clinker, it usually needs
With addition of the fluorite lump ore of a small amount of ratio on blast furnace, to reduce the melting temperature of clinker.This method matches dosage due to fluorite lump ore
Only 0.5% or so, it will cause CaF in clinker2Content is uneven, and fluctuation is big, and the effect that Performance of Slag improves receives centainly
Influence, and cannot use fluorite fine ore, cause the waste of fluorite resource, meanwhile, the metallurgical performance of product obtained is also difficult
To satisfy the use demand.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of fluorine-containing vanadium of metallurgical performance for being effectively improved high titanium clinker
The production method of titanium pellet.
The technical solution adopted by the present invention to solve the technical problems is: the production method of fluorine-containing vanadium-titanium pellet, including
Following steps: by 93~97 parts by weight of sefstromite concentrate fine ore, 1~3 part of fluorite miberal powder and 1~3 part of swelling
After soil mixes well, moistens 5~10min of mill through ball mill, then add water pelletizing to obtain the pelletizing of 8~16mm through disk, wherein raw
Moisture content in ball is 6~10%, and the temperature that green-ball is dried is 200~600 DEG C, and the dry time is 10~15min,
Pelletizing preheating temperature is 800~1000 DEG C, and preheating time is 15~25min, and it is 1150~1300 DEG C that pelletizing, which carries out maturing temperature,
Calcining time is 20~40min, the fluorine-containing vanadium-titanium pellet prepared after roasting.
Further, the ingredient of the v-ti magnetite concentrate contains by weight percentage not less than 56% TFe, small
In 4% SiO2, 0.5~1% CaO, 2~3% Al2O3, 0.5~0.8% V2O5, 9~11% TiO2, be less than
0.01% P, the S less than 0.5%, and FeO content is 20~30%.
Further, the ingredient of the fluorite fine ore contains the CaF not less than 60% by weight percentage2And 10
~20% SiO2。
Further, the bentonitic ingredient contains the SiO not less than 60% by weight percentage2, be not less than
5% CaO and Al not higher than 10%2O3。
Further, 200 meshes can be passed through in the v-ti magnetite concentrate in the step of formation mixture
Particle accounts for 80% or more.
Further, the granularity of the fluorite miberal powder is not more than 1mm.
Further, in the bentonite 98% or more can be accounted for by the particle of 200 meshes.
Further, the moisture content in green-ball is 7.0~8.0%.
Further, green-ball drying temperature is 300~500 DEG C.
Further, pelletizing preheating temperature is 850~950 DEG C, pellet roasting temperature is 1200~1250 DEG C.
The beneficial effects of the present invention are: in practical applications, since the pelletizing material structure of the invention used is " vanadium ferrotianium
Concentrate+Fluorspar Powder+bentonite " can get pellet compression strength at 2000N/ after through green-ball preparation and green-ball roasting
More than, TFe Pin Wei≤53% or more.The present invention not only solves the use problem of fluorite fine ore, can more uniform raising furnace
Slag CaF2Content, and the metallurgical performance that blast furnace process can also be effectively improved high titanium clinker is added in fluorine-containing vanadium-titanium pellet.This
Invention is particularly suitable among the production preparation of fluorine-containing vanadium-titanium pellet.
Specific embodiment
The production method of fluorine-containing vanadium-titanium pellet includes the following steps: 93~97 parts by weight of sefstromite concentrate
After fine ore, 1~3 part of fluorite miberal powder and 1~3 part of bentonite mix well, moistens 5~10min of mill through ball mill, then pass through
Disk adds water pelletizing to obtain the pelletizing of 8~16mm, wherein the moisture content in green-ball is 6~10%, the temperature that green-ball is dried
Degree be 200~600 DEG C, the dry time be 10~15min, pelletizing preheating temperature be 800~1000 DEG C, preheating time be 15~
25min, it is 1150~1300 DEG C that pelletizing, which carries out maturing temperature, and calcining time is 20~40min, and what is prepared after roasting contains
Fluorine vanadium-titanium pellet.
Existing smelting vanadium-titanium magnetite by blast furnace, in order to improve the metallurgical performance of high titanium clinker, blast furnace is with addition of a small amount of firefly
Stone mine causes clinker CaF2Content fluctuation is big, and cannot use fluorite fine ore, causes the waste of resource.The present invention is in pelletizing
With addition of certain fluorite fine ore in production process, the resource of fluorite fine ore can be not only efficiently used, but also can be more uniform
Improve clinker CaF2Content can be improved Business Economic Benefit, have apparent feasibility and application prospect.It is prepared by the present invention
Fluorine-containing vanadium-titanium pellet, TFe >=53%, TiO:29~10%, CaF2>=1%, finished ball nodulizing compression strength >=2000N/,
Technical advantage is fairly obvious.
In order to further improve the quality of product obtained, there is following preferred embodiment to be selected: the vanadium titanium magnetic
The ingredient of iron ore concentrate contains the TFe not less than 56%, the SiO less than 4% by weight percentage2, 0.5~1% CaO, 2~
3% Al2O3, 0.5~0.8% V2O5, 9~11% TiO2, the P less than 0.01%, the S less than 0.5%, and FeO content
It is 20~30%.Can also be preferred: the ingredient of the fluorite fine ore contains the CaF not less than 60% by weight percentage2With
And 10~20% SiO2.Alternatively, it is also possible to preferred: the bentonitic ingredient contains by weight percentage not less than 60%
SiO2, the CaO not less than 5% and the Al not higher than 10%2O3。
For the mixture of formation, in order to improve the quality of final products, Ke Yixuan by the quality for promoting raw material
It selects in the formation mixture the step of, 80% or more can be accounted for by the particle of 200 meshes in the v-ti magnetite concentrate.
Also can choose: the granularity of the fluorite miberal powder is not more than 1mm.It can also be preferred: 200 meshes can be passed through in the bentonite
Particle account for 98% or more.
In addition, the moisture content preferably in green-ball is 7.0~8.0% in green-ball step, or the preferably dry temperature of green-ball
Degree is 300~500 DEG C, to advanced optimize the technological parameter of green-ball, obtains more preferably product quality.In pelletizing step
In, preferably pelletizing preheating temperature is 850~950 DEG C, or preferably pellet roasting temperature is 1200~1250 DEG C, thus further
Optimize pelletizing process parameter, obtains more preferably product quality.
Embodiment
Embodiment 1
Firstly, carrying out material proportion by following proportional region:
A, sefstromite concentrate proportion is 93~97%；
B, fluorite fine ore proportion is 1~3%；
C, bentonite ore ratio is 1~3%.
The above material is mixed according to the ratio, carries out profit mill, profit 5~10min of mill through ball mill, disc balling machine is made
Ball, pellet 8~16mm of granularity, moisture 6%~10%, 200~600 DEG C of green-ball drying temperature, 10~15min of drying time；
800~1000 DEG C of pelletizing preheating temperature, 15~25min of preheating time；1150~1300 DEG C of pellet roasting temperature, calcining time 20
~40min.
The ingredient of v-ti magnetite concentrate contains the TFe not less than 56%, the SiO less than 3% by weight percentage2、0.5
~1% CaO, 2~3% Al2O3, 0.5~0.8% V2O5, 9~11% TiO2, P less than 0.01%, less than 0.3%
S, and FeO content be 20~30%.The ingredient of the fluorite fine ore contains the CaF not less than 60% by weight percentage2、
10~20% SiO2；The bentonitic ingredient contains the SiO not less than 60% by weight percentage2, not less than 5%
CaO, the Al not higher than 10%2O3。
In the step of forming pelletizing, 80% or more will can be accounted in v-ti magnetite concentrate by the particle of 200 meshes, it is described
The granularity of fluorite miberal powder is not more than 1mm, can account for 98% or more by the particle of 200 meshes in the bentonite.
Mixture pelletizing after profit mill is formed, green-ball moisture 8.0% is controlled.400 DEG C of green-ball drying temperature, drying time
12min；900 DEG C of pelletizing preheating temperature, preheating time 20min；1250 DEG C of pellet roasting temperature, calcining time 30min.
Material composition is shown in Table 1, and pelletizing proportion is shown in Table 2, and the index of pellet is shown in Table 3.
1 raw material main chemical compositions of table/%
2 difference CaF of table2Content pelletizing matches (siccative)/parts by weight
| Example | Sefstromite concentrate | Fluorite fine ore | Bentonite |
| 1 | 96 | 2 | 2 |
| 2 | 95.5 | 2.5 | 2 |
| 3 | 95 | 3 | 2 |
3 difference CaF of table2Content pelletizing main indicator
As can be seen from Table 3, with the increase that fluorite fine ore matches, drum strength, compression strength, the CaF of pellet2?
There is certain increase, up to 95% or more, compression strength reaches the drum strength for the pellet that method of the invention obtains
2200N/ or more, while the CaF in pellet2Content reaches 1~2%, TFe and is maintained at 53% or more, to strengthen vanadium titanium magnetic
Iron ore blast furnace process, improvement Performance of Slag will play the role of preferable.
Claims (10)
1. the production method of fluorine-containing vanadium-titanium pellet, which comprises the steps of: by 93~97 parts by weight of vanadium
After concentrated ilmenite fine ore, 1~3 part of fluorite miberal powder and 1~3 part of bentonite mix well, through ball mill profit mill 5~
Then 10min adds water pelletizing to obtain the pelletizing of 8~16mm through disk, wherein the moisture content in green-ball is 6~10%, green-ball
The temperature being dried is 200~600 DEG C, and the dry time is 10~15min, and pelletizing preheating temperature is 800~1000 DEG C, in advance
The hot time is 15~25min, and it is 1150~1300 DEG C that pelletizing, which carries out maturing temperature, and calcining time is 20~40min, after roasting
The fluorine-containing vanadium-titanium pellet prepared.
2. the production method of fluorine-containing vanadium-titanium pellet as described in claim 1, it is characterised in that: the v-ti magnetite concentrate
Ingredient contains the TFe not less than 56%, the SiO less than 4% by weight percentage2, 0.5~1% CaO, 2~3%
Al2O3, 0.5~0.8% V2O5, 9~11% TiO2, the P less than 0.01%, the S less than 0.5%, and FeO content be 20~
30%.
3. the production method of fluorine-containing vanadium-titanium pellet as described in claim 1, it is characterised in that: the ingredient of the fluorite fine ore
By weight percentage containing the CaF not less than 60%2And 10~20% SiO2。
4. the production method of fluorine-containing vanadium-titanium pellet as described in claim 1, it is characterised in that: the bentonitic ingredient is pressed
Weight percent meter contains the SiO not less than 60%2, the CaO not less than 5% and the Al not higher than 10%2O3。
5. the production method of the fluorine-containing vanadium-titanium pellet as described in claim 1,2,3 or 4, it is characterised in that: described formed mixes
In the step of closing material, 80% or more can be accounted for by the particle of 200 meshes in the v-ti magnetite concentrate.
6. the production method of the fluorine-containing vanadium-titanium pellet as described in claim 1,2,3 or 4, it is characterised in that: the fluorite ore
The granularity of powder is not more than 1mm.
7. the production method of the fluorine-containing vanadium-titanium pellet as described in claim 1,2,3 or 4, it is characterised in that: the bentonite
In can account for 98% or more by the particle of 200 meshes.
8. the production method of the fluorine-containing vanadium-titanium pellet as described in claim 1,2,3 or 4, it is characterised in that: the water in green-ball
Dividing content is 7.0~8.0%.
9. the production method of the fluorine-containing vanadium-titanium pellet as described in claim 1,2,3 or 4, it is characterised in that: the dry temperature of green-ball
Degree is 300~500 DEG C.
10. the production method of the fluorine-containing vanadium-titanium pellet as described in claim 1,2,3 or 4, it is characterised in that: pelletizing preheating temperature
Degree is 850~950 DEG C, and pellet roasting temperature is 1200~1250 DEG C.
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| CN201910604596.9A CN110205487B (en) | 2019-07-05 | 2019-07-05 | Production method of fluorine-containing vanadium-titanium pellet ore |
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| CN201910604596.9A CN110205487B (en) | 2019-07-05 | 2019-07-05 | Production method of fluorine-containing vanadium-titanium pellet ore |
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| CN110205487B CN110205487B (en) | 2021-07-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110484722A (en) * | 2019-09-11 | 2019-11-22 | 中南大学 | A method of improving fluorine-containing iron ore pellet roasting performance |
| CN114635033A (en) * | 2022-04-21 | 2022-06-17 | 攀钢集团攀枝花钢铁研究院有限公司 | Metallized vanadium-titanium pellet and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101487067A (en) * | 2009-03-03 | 2009-07-22 | 北京金坤宏宇矿业科技有限公司 | Industrial production method for directly producing iron and vanadium-titanium-aluminum alloy from vanadium-titanium magnet placer |
| CN102061346A (en) * | 2011-01-14 | 2011-05-18 | 攀钢集团钢铁钒钛股份有限公司 | Method for improving metallurgical property of vanadium-titanium blast furnace slag |
| CN105907948A (en) * | 2016-06-27 | 2016-08-31 | 东北大学 | Magnetic separation method for low-grade chromium-containing vanadium titanium magnetite metalized pellet |
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2019
- 2019-07-05 CN CN201910604596.9A patent/CN110205487B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101487067A (en) * | 2009-03-03 | 2009-07-22 | 北京金坤宏宇矿业科技有限公司 | Industrial production method for directly producing iron and vanadium-titanium-aluminum alloy from vanadium-titanium magnet placer |
| CN102061346A (en) * | 2011-01-14 | 2011-05-18 | 攀钢集团钢铁钒钛股份有限公司 | Method for improving metallurgical property of vanadium-titanium blast furnace slag |
| CN105907948A (en) * | 2016-06-27 | 2016-08-31 | 东北大学 | Magnetic separation method for low-grade chromium-containing vanadium titanium magnetite metalized pellet |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110484722A (en) * | 2019-09-11 | 2019-11-22 | 中南大学 | A method of improving fluorine-containing iron ore pellet roasting performance |
| CN114635033A (en) * | 2022-04-21 | 2022-06-17 | 攀钢集团攀枝花钢铁研究院有限公司 | Metallized vanadium-titanium pellet and preparation method thereof |
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