CN103266223A - Furnace maintenance vanadium-titanium pellet for normal blast furnace and production method thereof - Google Patents
Furnace maintenance vanadium-titanium pellet for normal blast furnace and production method thereof Download PDFInfo
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- CN103266223A CN103266223A CN2013101972152A CN201310197215A CN103266223A CN 103266223 A CN103266223 A CN 103266223A CN 2013101972152 A CN2013101972152 A CN 2013101972152A CN 201310197215 A CN201310197215 A CN 201310197215A CN 103266223 A CN103266223 A CN 103266223A
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Abstract
The invention provides a furnace maintenance vanadium-titanium pellet for normal blast furnace and a production method thereof. The vanadium-titanium pellet comprises the following constituents: 50%-55% of TFe, 5%-8% of SiO2, 2%-4% of MgO, 2%-3% of Al2O3, less than 1% of MnO, less than 1% of V2O5 and 5%-15% of TiO2. The method comprises the following steps of: dosing with vanadium-titanium mineral powder, vanadium extraction tailings and iron ore concentrate powder; further adding 1%-5% of adhesive, and then, mixing materials while stirring; and after mixing the materials, further adding water for pelletizing, wherein the dosage of the vanadium-titanium mineral powder, the vanadium extraction tailings and the iron ore concentrate powder is determined according the requirements on the constituents of the furnace maintenance vanadium-titanium pellet for normal blast furnace. The furnace maintenance vanadium-titanium pellet can be used for improving the slag melting point and viscosity of the blast furnace in normal iron ore smelting process on the premise of meeting the normal production of the blast furnace, and after the furnace maintenance vanadium-titanium pellet is used, the furnace condition of the blast furnace can be improved, the smooth operation of the blast furnace is guaranteed, and the furnace age of the blast furnace is prolonged.
Description
Technical field
The present invention relates to field of iron and steel smelting, specifically, relate to a kind of ordinary blast furnace retaining vanadium titanium globe ore deposit and the production method thereof that can effectively utilize tailings in vanadium extraction.
Background technology
Usually, blast furnace is the most important main equipment of modern TECHNIQUE TO LARGE INTEGRATED STEEL WORKS, and it is related to the production direct motion of whole iron and steel enterprise.Therefore, whether the direct motion of blast furnace not only is related to the production cost of blast furnace, more is related to follow-up STEELMAKING PRODUCTION tissue.The length of campaign life is somewhat dependent upon the erosion degree of cupola well, furnace bottom.In order to prolong generation furnace service life, although people take multiple measure from aspects such as material, structure, construction quality, smelting technologyes, " erosion " is always inevitable.In a single day blast furnace has gone into operation, and the countermeasure that prolongs its life-span just only limits to smelting operation and two kinds of main means of cooling.At the furnace retaining process aspect, adopt the novel method of vanadium titano-magnetite furnace retaining can receive effect preferably, through titanium furnace retaining after a while, furnace bottom cupola well cooling stave water temperature difference descends, and heat flow rate per unit area descends, and cupola well titanium enriching quantity reduces gradually.When approaching zero, furnace bottom cupola well cooling stave water temperature difference no longer descends.Because the cooling effect of cooling stave, the titanium material in a part of molten iron condenses and is enriched in cupola well; Owing to the erosion of washing away of molten iron, the titanium material that a part is condensed enters molten iron.The amount that is enriched in titanium on the cupola well when condensing is greater than when washing away the amount that enters molten iron, furnace retaining again.Along with the enrichment of cupola well titanium material thickening, furnace bottom cupola well cooling stave water temperature difference descends, and causes the enrichment of condensing of titanium material in the molten iron to reduce, and finally the two reaches balance, this moment cupola well the titanium enrichment just near null value, furnace bottom cupola well cooling stave water temperature difference no longer descends.At this moment wanting furnace retaining can increase titanium content furnace retaining in the molten iron by improving stove titanium load and molten iron temperature, also can improve the cooling intensity of furnace bottom cupola well cooling stave.
Publication number discloses a kind of high-titanium protection stove pellet ore and preparation method thereof for the CN101343674A patent application, and it is high-titanium protection stove pellet ore more than 15% and preparation method thereof that the technical problem that this application solves has provided a kind of content of titanium dioxide.Wherein, TiO
2Content is that 15%～35%, TFe content is 35%～50%, and its preparation method comprises feed proportioning, makes ball, roasting, cooling step.The high-titanium protection stove pellet ore of this application is effective for the furnace retaining of blast furnace ironmaking, can effectively improve blast furnace campaign, has broad application prospects.
Yet, the lower and TiO of TFe content in the furnace retaining pelletizing of above-mentioned patent application
2Too high levels is bigger to furnace retaining stable operation influence.
Summary of the invention
The objective of the invention is to solve at least one in the above-mentioned prior art deficiency.
For example, one of purpose of the present invention is to provide a kind of ordinary blast furnace retaining vanadium titanium globe ore deposit and the production method thereof that can effectively utilize tailings in vanadium extraction and have good furnace retaining effect simultaneously.
An aspect of of the present present invention provides a kind of ordinary blast to use furnace retaining vanadium titanium globe ore deposit, and described ordinary blast comprises by weight percentage with the composition in furnace retaining vanadium titanium globe ore deposit: 50%～55% TFe, 5%～8% SiO
2, 2%～4% MgO, 2%～3% Al
2O
3, the MnO less than 1%, the V less than 1%
2O
5With 5%～15% TiO
2
Another aspect of the present invention provides the method for a kind of production ordinary blast with furnace retaining vanadium titanium globe ore deposit, said method comprising the steps of: schreyerite powder, tailings in vanadium extraction and fine iron breeze are proportionally prepared burden, form main compound; After adding 1%～5% the binding agent account for main compound weight by weight percentage, carry out stir mixing; After batch mixing is finished, add a certain amount of water and make the ball processing, make ordinary blast and use furnace retaining vanadium titanium globe ore deposit, wherein, the amount of allocating into of schreyerite powder, tailings in vanadium extraction and fine iron breeze requires to determine according to the composition of described ordinary blast with furnace retaining vanadium titanium globe ore deposit in the described batching step.
Compared with prior art, beneficial effect of the present invention comprises: can improve blast furnace slag fusing point and viscosity in the common iron ore smelting process under the prerequisite that satisfies the blast furnace ordinary production, can improve conditions of blast furnace after the use, effectively guarantee smooth operation of furnace, prolong the blast-furnace production campaign.
Embodiment
Hereinafter, will ordinary blast of the present invention furnace retaining vanadium titanium globe ore deposit and production method thereof be described by exemplary embodiment.
Ordinary blast according to an aspect of the present invention comprises by weight percentage with the composition in furnace retaining vanadium titanium globe ore deposit: 50%～55% TFe, 5%～8% SiO
2, 2%～4% MgO, 2%～3% Al
2O
3, the MnO less than 1%, the V less than 1%
2O
5With 5%～15% TiO
2Preferably, the composition in described furnace retaining vanadium titanium globe ore deposit comprises by weight percentage: 52%～54% TFe, 5.5%～7.5% SiO
2, 2.2%～3.8% MgO, 2.2%～2.8% Al
2O
3, 0.2%～0.9% MnO, 0.2%～0.9% V
2O
5With 9%～13% TiO
2The furnace retaining vanadium titanium globe ore deposit of this sample ingredient can be improved the stability of furnace retaining operation greatly, and can improve blast furnace slag fusing point and viscosity in the common iron ore smelting process, can improve conditions of blast furnace after the use, effectively guarantees smooth operation of furnace, prolongs the blast-furnace production campaign.
Production ordinary blast according to a further aspect of the invention may further comprise the steps with the method in furnace retaining vanadium titanium globe ore deposit: schreyerite powder, tailings in vanadium extraction and fine iron breeze are proportionally prepared burden, form main compound; After adding 1%～5% the binding agent account for main compound weight by weight percentage, carry out the mechanical stirring batch mixing; After batch mixing is finished, add that a certain amount of (add-on of water accounts for 3%～8% of main compound weight.) water make ball and handle, make ordinary blast with furnace retaining vanadium titanium globe ore deposit, wherein, the amount of allocating into of schreyerite powder, tailings in vanadium extraction and fine iron breeze requires to determine according to the composition of described ordinary blast with furnace retaining vanadium titanium globe ore deposit in the described batching step.
In the present invention, described tailings in vanadium extraction wherein contains the TFe more than 35% and 12% above TiO by weight percentage for adopting the solid waste after vanadium slag is produced the vanadium goods
2
Preferably, the amount of allocating into of tailings in vanadium extraction accounts for 10%～30% of main compound weight in the described batching step.More preferably, the amount of allocating into of tailings in vanadium extraction accounts for 18%～28% of main compound weight in the described batching step.
In another exemplary embodiment, production ordinary blast of the present invention also can realize by following mode with the method in furnace retaining vanadium titanium globe ore deposit.
Use sefstromite powder, tailings in vanadium extraction, fine iron breeze and wilkinite to be raw material, require to carry out the proportioning adjustment according to the composition of schreyerite powder, tailings in vanadium extraction, fine iron breeze and the composition of protection stove pellet ore, the wilkinite of adding 1%～5% carried out the mechanical stirring batch mixing after batching was finished, add a certain amount of water after batch mixing is finished and make the ball processing, the pellet composition range that obtains is: TFe 50%～55%, SiO
25%～8%, MgO 2%～4%, Al
2O
32%～3%, MnO＜1%, V
2O
5＜1%, TiO
25%～15%.
Wherein, tailings in vanadium extraction is for adopting the solid waste after vanadium slag is produced the vanadium goods, and it contains TFe and 12% above TiO more than 35%
2Fine iron breeze is generally the powdered iron ore that does not contain vanadium titanium composition; The bentonitic binding agent that act as, other organic or inorganic thing and the compositions thereof that can make the pellet binding agent all can be used for the present invention.
In sum, the present invention has advantages such as production technique is simple, result of use is good.
In order to understand exemplary embodiment of the present invention better, further specify the present invention below in conjunction with concrete example.
Example 1
Use sefstromite powder, tailings in vanadium extraction, fine iron breeze and wilkinite to be raw material, require to carry out the proportioning adjustment according to the composition of schreyerite powder, tailings in vanadium extraction, fine iron breeze and the composition of protection stove pellet ore, concrete batching is: 10wt% tailings in vanadium extraction+53wt% Baima sefstromite powder+37wt% fine iron breeze.Add the 1.5wt% wilkinite after batching is finished and carry out the mechanical stirring batch mixing, the water that adds 5wt% after batch mixing is finished is made the ball processing, and the pellet composition range that obtains is: TFe 53.55%, SiO
27.92%, MgO 2.55%, Al
2O
32.78%, MnO 0.78%, V
2O
50.57%, TiO
26.93%.
Example 2
Use sefstromite powder, tailings in vanadium extraction, fine iron breeze and wilkinite to be raw material, require to carry out the proportioning adjustment according to the composition of schreyerite powder, tailings in vanadium extraction, fine iron breeze and the composition of protection stove pellet ore, concrete batching is: 30wt% tailings in vanadium extraction+35wt% Baima sefstromite powder+35wt% fine iron breeze.Add the 1.5wt% wilkinite after batching is finished and carry out the mechanical stirring batch mixing, the water that adds 8wt% after batch mixing is finished is made the ball processing, and the pellet composition range that obtains is: TFe 52.86%, SiO
25.56%, MgO 2.82%, Al
2O
32.63%, MnO 0.20%, V
2O
50.61%, TiO
210.13%.
Although described the present invention in conjunction with exemplary embodiment above, those of ordinary skills should be clear, under the situation of the spirit and scope that do not break away from claim, can carry out various modifications to above-described embodiment.
Claims (7)
1. an ordinary blast is characterized in that with furnace retaining vanadium titanium globe ore deposit the composition in described furnace retaining vanadium titanium globe ore deposit comprises by weight percentage: 50%～55% TFe, 5%～8% SiO
2, 2%～4% MgO, 2%～3% Al
2O
3, the MnO less than 1%, the V less than 1%
2O
5With 5%～15% TiO
2
2. ordinary blast according to claim 1 is characterized in that with furnace retaining vanadium titanium globe ore deposit the composition in described furnace retaining vanadium titanium globe ore deposit comprises by weight percentage: 52%～54% TFe, 5.5%～7.5% SiO
2, 2.2%～3.8% MgO, 2.2%～2.8% Al
2O
3, 0.2%～0.9% MnO, 0.2%～0.9% V
2O
5With 9%～13% TiO
2
3. produce ordinary blast as claimed in claim 1 or 2 with the method in furnace retaining vanadium titanium globe ore deposit for one kind, it is characterized in that, said method comprising the steps of:
Schreyerite powder, tailings in vanadium extraction and fine iron breeze are proportionally prepared burden, form main compound;
After adding 1%～5% the binding agent account for main compound weight by weight percentage, carry out stir mixing;
After batch mixing is finished, add a certain amount of water and make the ball processing, make ordinary blast and use furnace retaining vanadium titanium globe ore deposit, wherein,
The amount of allocating into of schreyerite powder, tailings in vanadium extraction and fine iron breeze requires to determine according to the composition of described ordinary blast with furnace retaining vanadium titanium globe ore deposit in the described batching step.
4. production ordinary blast according to claim 3 is with the method in furnace retaining vanadium titanium globe ore deposit, it is characterized in that, described tailings in vanadium extraction wherein contains the TFe more than 35% and 12% above TiO by weight percentage for adopting the solid waste after vanadium slag is produced the vanadium goods
2
5. production ordinary blast according to claim 4 is characterized in that with the method in furnace retaining vanadium titanium globe ore deposit the amount of allocating into of tailings in vanadium extraction accounts for 10%～30% of main compound weight in the described batching step.
6. production ordinary blast according to claim 5 is characterized in that with the method in furnace retaining vanadium titanium globe ore deposit the amount of allocating into of tailings in vanadium extraction accounts for 18%～28% of main compound weight in the described batching step.
7. production ordinary blast according to claim 3 is characterized in that with the method in furnace retaining vanadium titanium globe ore deposit described binding agent is wilkinite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310197215.2A CN103266223B (en) | 2013-05-24 | 2013-05-24 | Furnace maintenance vanadium-titanium pellet for normal blast furnace and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310197215.2A CN103266223B (en) | 2013-05-24 | 2013-05-24 | Furnace maintenance vanadium-titanium pellet for normal blast furnace and production method thereof |
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| CN103266223A true CN103266223A (en) | 2013-08-28 |
| CN103266223B CN103266223B (en) | 2015-02-04 |
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|---|---|---|---|
| CN201310197215.2A Expired - Fee Related CN103266223B (en) | 2013-05-24 | 2013-05-24 | Furnace maintenance vanadium-titanium pellet for normal blast furnace and production method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106636628A (en) * | 2016-12-02 | 2017-05-10 | 江苏省冶金设计院有限公司 | Treatment system and method for vanadium extraction tailings |
| CN108660272A (en) * | 2018-02-23 | 2018-10-16 | 鞍钢股份有限公司 | It a kind of compound furnace retaining furnace charge of blast furnace and its prepares and furnace retaining method |
| CN113957185A (en) * | 2021-10-20 | 2022-01-21 | 中南大学 | Furnace charge formula for smelting vanadium-titanium magnetite in blast furnace |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102485921A (en) * | 2010-12-03 | 2012-06-06 | 攀钢集团钢铁钒钛股份有限公司 | Pellet production method of vanadium-titanium magnetite concentrate |
| CN102839281A (en) * | 2012-09-13 | 2012-12-26 | 莱芜钢铁集团有限公司 | Method of producing titanium-bearing metallic pellets used for protecting blast furnace with rotary hearth furnace through direct reduction |
-
2013
- 2013-05-24 CN CN201310197215.2A patent/CN103266223B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102485921A (en) * | 2010-12-03 | 2012-06-06 | 攀钢集团钢铁钒钛股份有限公司 | Pellet production method of vanadium-titanium magnetite concentrate |
| CN102839281A (en) * | 2012-09-13 | 2012-12-26 | 莱芜钢铁集团有限公司 | Method of producing titanium-bearing metallic pellets used for protecting blast furnace with rotary hearth furnace through direct reduction |
Non-Patent Citations (1)
| Title |
|---|
| 张亚平等: ""脉石含量对球团矿性能的影响"", 《烧结球团》, vol. 27, no. 4, 30 July 2002 (2002-07-30), pages 11 - 14 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106636628A (en) * | 2016-12-02 | 2017-05-10 | 江苏省冶金设计院有限公司 | Treatment system and method for vanadium extraction tailings |
| CN108660272A (en) * | 2018-02-23 | 2018-10-16 | 鞍钢股份有限公司 | It a kind of compound furnace retaining furnace charge of blast furnace and its prepares and furnace retaining method |
| CN113957185A (en) * | 2021-10-20 | 2022-01-21 | 中南大学 | Furnace charge formula for smelting vanadium-titanium magnetite in blast furnace |
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|---|---|
| CN103266223B (en) | 2015-02-04 |
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Owner name: PANGANG GROUP XICHANG STEEL + VANADIUM CO., LTD. Effective date: 20140130 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20140130 Address after: 617000 Taoyuan street, Panzhihua, Sichuan, No. 90 Applicant after: Pangang Group Panzhihua Iron & Steel Research Institute Co., Ltd. Applicant after: Pangang Group Xichang Steel & Vanadium Co., Ltd. Address before: 617000 Taoyuan street, Panzhihua, Sichuan, No. 90 Applicant before: Pangang Group Panzhihua Iron & Steel Research Institute Co., Ltd. |
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