CN101503744A - V-Ti-magnetite blast furnace smelting method - Google Patents
V-Ti-magnetite blast furnace smelting method Download PDFInfo
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- CN101503744A CN101503744A CNA2009100586873A CN200910058687A CN101503744A CN 101503744 A CN101503744 A CN 101503744A CN A2009100586873 A CNA2009100586873 A CN A2009100586873A CN 200910058687 A CN200910058687 A CN 200910058687A CN 101503744 A CN101503744 A CN 101503744A
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- vanadium
- sio
- blast furnace
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Abstract
The invention relates to smelting technology, in particular to a full vanadium-titanium mineral blast-furnace smelting method, which particularly comprises the following five steps: firstly, analysis of bulk samples; secondly, grouping according to different analysis results; thirdly, proportioning, namely various groups of concentrates are proportioned respectively, the weight percentage of the compositions is as follows: 1 to 8 percent of SiO2 and 99 to 92 percent of high-titanium vanadium-titanium magnetite concentrates, and sintered minerals are obtained by sintered compositions and binary basicity; fourthly, furnace entry, namely the sintered minerals enter a furnace, the furnace temperature is controlled to be between 1,390 and 1,440 DEG C, and the furnace entry time is between 60 and 150 minutes; and fifthly, blast furnace tapping, wherein the proportion of titania in furnace residue is less than 23 percent. The invention can overcome the defect of pollution of pig iron and vanadium products and can effectively reduce the cost of vanadium purification because beneficial elements such as vanadium in molten iron cannot be diluted.
Description
Affiliated field
The present invention relates to a kind of smelting technology, particularly a kind of V-Ti-magnetite blast furnace smelting method.
Background technology
The abundant vanadium titano-magnetite of Panxi Diqu is a high titanium type, be world's mineral of difficult smelting, country is in order to develop these valuable resources, front and back concentrate for three times national strength to carry out research of technique, invented the smelting technology of Chinese uniqueness, be that spray gun adds corresponding slag making smelting technology, solved the problem of tapping a blast furnace.
Climb the seventies after the steel operation, operation of blast furnace has some setbacks, and the capacity factor of a blast furnace is not high, is lower than 1 for a long time, the loss of enterprise, and production is difficult to tissue.It is to produce to join the ore deposit with the ore deposit that current tackling key problem changes prepurging, and operation of blast furnace is normal, and output improves gradually, has broken through 1.7 design utilization coefficient, climbs steel and moves towards profit.
The middle and later periods eighties tackles key problems for the third time, continue to improve the result that tackles key problems for the second time, that carries out high low-grade and usefulness in joining the ore deposit joins the ore deposit system, has cancelled spray gun, has realized coal powder injection, oxygen enrichment, computer control, utilization coefficient breaks through 2.0, every year new breakthrough is arranged all later on, has broken through 2.5 at present, come out at the top in the world, but this technology also has significant limitation:
1, joins ore resources and peter out, can't satisfy the needs of climbing the steel production development;
2, the difficult problem polluted of the pig iron and vanadium goods is difficult to overcome;
3, the beneficial elements such as vanadium that contain in the molten iron are diluted, and vanadiumcontent drops to present 0.27%-0.28% from 0.4% of V-Ti-magnetite, increased the consumption of vanadium extraction, has improved cost.
1997.06.11, Patent Office of the People's Republic of China discloses the patent of invention (notification number: CN1151439) of a kind of " with the blow-in method of the full vanadium titano-magnetite of schreyerite blast-furnace smelting " by name, blow-on material of the present invention adopts vanadium titano-magnetite (agglomerate and/or pellet) to account for 30～40% of furnace charge gross weight, metallurgical coke accounts for 50～65% of furnace charge gross weight, Wingdale and/or rhombspar as flux account for 4～8% of furnace charge gross weight, the present invention controls the full oven coke of blow-on material shove charge than 2.8～3.0, the pig iron contains Si0.9～1.1, Ti0.4～0.6, basicity of slag 1.20～1.35, slag iron is than 1.0～1.2.2006.06.21, Patent Office of the People's Republic of China discloses the patent of invention (notification number: CN1789432) of a kind of " process for smelting schreyerite by blast furnace with cooling block " by name, technical scheme is to mix containing the vanadium agglomerate and containing the vanadium pellet, smelts vanadium-bearing hot metal by the module blast furnace, sends into steel making working procedure; The main points that the module blast-furnace smelting goes out the vanadium-bearing hot metal operation are: 1. improve standard wind speed; 2. reduce the pig iron and contain vanadium; 3. reduce the slag dual alkalinity.The technical scheme of above-mentioned two patents still exists joins ore resources and peters out, can't satisfy that a difficult problem that needs, the pig iron and vanadium goods of climbing the steel production development are polluted is difficult to overcome, the beneficial elements such as vanadium that contain in the molten iron are diluted, increase the consumption of vanadium extraction, improved the problem of cost.
Summary of the invention
Purpose of the present invention promptly is to overcome the shortcoming of prior art, a kind of V-Ti-magnetite blast furnace smelting method that need not join the ore deposit is provided, it can overcome the difficult problem that the pig iron and vanadium goods are polluted, and containing beneficial elements such as vanadium and can not be diluted in the molten iron can reduce the cost of vanadium extraction.
V-Ti-magnetite blast furnace smelting method is characterized in that: comprise following steps:
A, bulk sample analysis: selecting the distinctive high-Ti type V-Ti magnetite concentrate of Panxi Diqu for use is raw material, carries out the bulk sample analysis;
B, grouping: divide into groups according to different analytical resultss;
C, batching: to each group concentrate batching, the weight percent of furnish component is SiO respectively
21～8%, high-Ti type V-Ti magnetite concentrate 99%～92% utilizes sintered material, adopts dual alkalinity, gets agglomerate;
D, advance stove: the agglomerate among the c is advanced stove, and Control for Kiln Temperature is advanced 60～150 minutes stove time at 1390～1440 ℃;
E, come out of the stove: the ratio of titanium dioxide is less than 23% in the slag.
After coming out of the stove, the slag of coming out of the stove is carried out the bulk sample analysis, with the batching reasonableness among the verification step c every 1.5～3.5 hours.
Preferably, the slag of coming out of the stove is carried out the bulk sample analysis, with the batching reasonableness among the verification step c every 2 hours.
For SiO in the batching
2The amount of allocating into, according to the SiO in the concentrate
2And TiO
2Content decide SiO in the batching
2Content.
Preferably, the weight percent of furnish component is SiO among the step c
22～7%, high-Ti type V-Ti magnetite concentrate 98%～93%.
More excellent, the weight percent of furnish component is SiO among the step c
24～6%, high-Ti type V-Ti magnetite concentrate 96%～94%.
Advancing the stove time among the step c is 100～140 minutes.
Described bulk sample analysis is meant the assay that the distinctive high-Ti type V-Ti magnetite concentrate of the Panxi Diqu of choosing is carried out constituent contents such as iron, vanadium, titanium.
Now the ore deposit with Flos Bombacis Malabarici ore deposit and red Ge Bei mining area is the TiO of example analysis in the vanadium ilmenite concentrate
2And SiO
2SiO when content is determined to smelt
2, the amount of allocating into.
1, Flos Bombacis Malabarici vanadium ilmenite concentrate, with the beginning of the seventies E Meikuang grind data, be that V-Ti-magnetite is smelted at that time.Concentrate Tfe52%, TiO
212.06, V
2O 0.52, SiO
25.5, CaO 2.7%, high slag composition SiO
220.868, CaO 22.6, MgO 7.459, Al
2O
312.5, TiO
224.06, Fe8.89% (metal Fe8.3), basicity R1.089.Calculate 2 tons of concentrate TiO by 1 ton of iron of 2 tons of concentrate without exception
224.12, SiO
211 (production brings 10 totally 21 into, and Si becomes nearly 0.3 total amount 20.868 of SiO2 in the deduction pig iron), two totally 44.988, and Flos Bombacis Malabarici is a gabbro, and pyroxenite becomes the ore deposit, the nearly 49+% of SiO2+TiO2 mean value in the gangue, and difference 4+% (presses TiO
2Calculate)
Press SiO
2Calculate 2 tons of concentrate SiO
2Nearly 11, sintering coal, Wingdale, ironmaking coke bring 10 into, button 0.3,20.87.Climb titandiopside 61+ altogether in the slag, ordinary production 65% * 900Kg (quantity of slag)=585Kg; 585 * 42 (pyroxene average content 44 is limit in getting on the lower side)=24.56; 585 * 44=25.94%; 24.56-20.87=3.69; 25.74-20.87=4.87% calculates 4,3.69,4.87%, Here it is climbs steel V-Ti-magnetite SiO when smelting
2Residual quantity.
After joining the ore deposit, climb and dropped to 15-20% after steel was joined common ore deposit 25-30% at that time, get 20% and calculate, press SiO
211%; 20 * 2 * 11%=4.4%, 25 * 2 * 12=6% allocates SiO into
2Amount.
2, Hongge Deposit (northern mining area), according to geologic information, the ore deposit in northern mining area and ore deposit, Baima are very similar, and just beneficial element is many, the ore deposit Tfe56% that our test is bought with the ore deposit (having up to 57, low to 55%), TiO
2(10.3+ conforming to) with Ministry of Geology and Mineral Resources experiment, SiO
24%, the high 17+% of coke ash of usefulness, sintering coal ash part 35%, lime CaO89-92% quality all is lower than climbs steel, and the smelting of vanadium titanium is suitable entirely then with climbing steel for the small furnace coke ratio.
Use TiO
2Calculate TiO22 * 10.3-0.4 (entering the molten iron part)=20.2
SiO
22 * 4 ore deposits+2 * 1.75 (sintering), 2 * 0.8 (lime)+850 * 17 * 1/2=8+3.5+1.6+7.25=20.35%
20.2+20.35＝40.55％
The highest by 46.12 (SiO2)+1.98 of gangue composition (TiO2)=48.10-40.55=7.55 ÷ 2=3.75%
Average 44.78+1.98=46.76-20.55=6.21 ÷ 2=3.16%
Use SiO
2Calculate SiO2 20.35%-0.23 (entering the part of Ti or Alkaline minerals)=20.12
900Kg (slag) * 65=585 * 45%=46.76-20.12=6.64% ÷ 2=3.32
Two kinds of algorithm basically identicals, I deduct and enter Si (SiO in the molten iron
20.8) adopt when testing and mend SiO
23.5% batching, blast-furnace smelting, the working of a furnace is normal, and slag, iron separate fine, and it is smooth and easy to flow, Fe0.3% in the slag ±.
The present invention has the following advantages:
1, abundant alum titanomagnetite development of resources provides sufficient resource to guarantee to China's Panxi Diqu in the utilization of present technique, has removed joining the dependence in ore deposit;
2, molten iron and the beneficial element pollution that causes in the ore deposit joined in the common ore deposit of having avoided China now to adopt;
3, avoided joining common ore deposit and caused dilution beneficial elements such as vanadium in the molten iron;
4, the material aboundresources is gathered materials on the spot, and has saved common chief of a pit way transport charge, has reduced production cost;
5, containing beneficial element such as vanadium in the molten iron increases more than the 1kg/t, increases to be worth more than 200 yuan/t, and iron loss reduces in the vanadium extraction, joins the minimizing of ore deposit freight charges, can increase income more than 300 yuan for these three.
6, iron and slag are mobile very good, do not have an accident, and it is much better that economic and technical norms also match well ore deposit production, and organization of production is more simple, can large-scale promotion.
Embodiment
The present invention will be further described below by embodiment:
Embodiment 1
The schreyerite blast furnace smelting method is characterized in that: comprise following steps:
A, bulk sample analysis: selecting the distinctive high-Ti type V-Ti magnetite concentrate of Panxi Diqu for use is raw material, carries out the bulk sample analysis;
B, grouping: divide into groups according to different analytical resultss;
C, batching: to each group concentrate batching, the weight percent of furnish component is SiO respectively
21～8%, high-Ti type V-Ti magnetite concentrate 99%～92% utilizes sintered material, adopts dual alkalinity, gets agglomerate;
D, advance stove: the agglomerate among the c is advanced stove, and Control for Kiln Temperature is advanced 60～150 minutes stove time at 1390～1440 ℃;
E, come out of the stove: the ratio of titanium dioxide is less than 23% in the slag.After coming out of the stove, the slag of coming out of the stove is carried out the bulk sample analysis, with the batching reasonableness among the verification step c every 1.5 hours.
According to the SiO in the concentrate
2And TiO
2Content decide SiO in the batching
2Content.
Advancing the stove time among the step c is 100～140 minutes.
Described bulk sample analysis is meant the assay that the distinctive high-Ti type V-Ti magnetite concentrate of the Panxi Diqu of choosing is carried out constituent contents such as iron, vanadium, titanium.
Embodiment 2
The schreyerite blast furnace smelting method is characterized in that: comprise following steps:
A, bulk sample analysis: selecting the distinctive high-Ti type V-Ti magnetite concentrate of Panxi Diqu for use is raw material, carries out the bulk sample analysis;
B, grouping: divide into groups according to different analytical resultss;
C, batching: to each group concentrate batching, the weight percent of furnish component is SiO respectively
22～7%, high-Ti type V-Ti magnetite concentrate 98%～93% utilizes sintered material, adopts dual alkalinity, gets agglomerate;
D, advance stove: the agglomerate among the c is advanced stove, and Control for Kiln Temperature is advanced 90～120 minutes stove time at 1390～1440 ℃;
E, come out of the stove: the ratio of titanium dioxide is less than 23% in the slag.After coming out of the stove, the slag of coming out of the stove is carried out the bulk sample analysis, with the batching reasonableness among the verification step c every 3.5 hours.
According to the SiO in the concentrate
2And TiO
2Content decide SiO in the batching
2Content.
Advancing the stove time among the step c is 100～140 minutes.
Described bulk sample analysis is meant the assay that the distinctive high-Ti type V-Ti magnetite concentrate of the Panxi Diqu of choosing is carried out constituent contents such as iron, vanadium, titanium.
Embodiment 3
The schreyerite blast furnace smelting method is characterized in that: comprise following steps:
A, bulk sample analysis: selecting the distinctive high-Ti type V-Ti magnetite concentrate of Panxi Diqu for use is raw material, carries out the bulk sample analysis;
B, grouping: divide into groups according to different analytical resultss;
C, batching: to each group concentrate batching, the weight percent of furnish component is SiO respectively
24～6%, high-Ti type V-Ti magnetite concentrate 96%～94% utilizes sintered material, adopts dual alkalinity, gets agglomerate;
D, advance stove: the agglomerate among the c is advanced stove, and Control for Kiln Temperature is advanced 90～150 minutes stove time at 1390～1440 ℃;
E, come out of the stove: the ratio of titanium dioxide is less than 23% in the slag.After coming out of the stove, the slag of coming out of the stove is carried out the bulk sample analysis, with the batching reasonableness among the verification step c every 2 hours.
According to the SiO in the concentrate
2And TiO
2Content decide SiO in the batching
2Content.
Advancing the stove time among the step c is 100～140 minutes.
Described bulk sample analysis is meant the assay that the distinctive high-Ti type V-Ti magnetite concentrate of the Panxi Diqu of choosing is carried out constituent contents such as iron, vanadium, titanium.
Embodiment 4
The schreyerite blast furnace smelting method is characterized in that: comprise following steps:
A, bulk sample analysis: selecting the distinctive high-Ti type V-Ti magnetite concentrate of Panxi Diqu for use is raw material, carries out the bulk sample analysis;
B, grouping: divide into groups according to different analytical resultss;
C, batching: to each group concentrate batching, the weight percent of furnish component is SiO respectively
2Greater than 5% and be less than or equal to 8%, high-Ti type V-Ti magnetite concentrate is not less than 92% and less than 95%, utilizes sintered material, adopts dual alkalinity, agglomerate;
D, advance stove: the agglomerate among the c is advanced stove, and Control for Kiln Temperature is advanced 100～140 minutes stove time at 1390～1440 ℃;
E, come out of the stove: the ratio of titanium dioxide is less than 23% in the slag.After coming out of the stove, the slag of coming out of the stove is carried out the bulk sample analysis, with the batching reasonableness among the verification step c every 2 hours.
According to the SiO in the concentrate
2And TiO
2Content decide SiO in the batching
2Content.
Advancing the stove time among the step c is 100～140 minutes.
Described bulk sample analysis is meant the assay that the distinctive high-Ti type V-Ti magnetite concentrate of the Panxi Diqu of choosing is carried out constituent contents such as iron, vanadium, titanium.
Claims (6)
1, a kind of V-Ti-magnetite blast furnace smelting method is characterized in that: comprise following steps:
A, bulk sample analysis: selecting the distinctive high-Ti type V-Ti magnetite concentrate of Panxi Diqu for use is raw material, carries out the bulk sample analysis;
B, grouping: divide into groups according to different analytical resultss;
C, batching: to each group concentrate batching, the weight percent of furnish component is SiO respectively
21～8%, high-Ti type V-Ti magnetite concentrate 99%～92% utilizes sintered material, adopts dual alkalinity, gets agglomerate;
D, advance stove: the agglomerate among the c is advanced stove, and Control for Kiln Temperature is advanced 60～150 minutes stove time at 1390～1440 ℃;
E, come out of the stove: the ratio of titanium dioxide is less than 23% in the slag;
F, slag assay: the slag of coming out of the stove is carried out the bulk sample analysis every 1.5～3.5 hours.
2, V-Ti-magnetite blast furnace smelting method according to claim 1 is characterized in that: the weight percent of furnish component is SiO among the step C
22～7%, high-Ti type V-Ti magnetite concentrate 98%～93%.
3, V-Ti-magnetite blast furnace smelting method according to claim 1 is characterized in that: the weight percent of furnish component is SiO among the step C
24～6%, high-Ti type V-Ti magnetite concentrate 96%～94%.
4, according to the described V-Ti-magnetite blast furnace smelting method of claim 1～3, it is characterized in that: according to the SiO in the concentrate
2And TiO
2Content decide SiO in the batching
2Content.
5, V-Ti-magnetite blast furnace smelting method according to claim 1 is characterized in that: every 2 hours the slag of coming out of the stove is carried out the bulk sample analysis in the step F.
6, V-Ti-magnetite blast furnace smelting method according to claim 1 is characterized in that: advancing the stove time among the step c is 100～140 minutes.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220441A (en) * | 2011-06-01 | 2011-10-19 | 邓元忠 | Detection and analysis method for use in blast-furnace smelting of high-titanium all vanadium titanium ore |
| CN102269993A (en) * | 2011-06-27 | 2011-12-07 | 攀钢集团有限公司 | Process optimization method for sintering vanadium-titanium magnetite concentrate by large-scale sintering machine |
| CN103820590A (en) * | 2014-02-11 | 2014-05-28 | 东北大学 | Ore and coke mixed blast furnace smelting method for vanadium-titanium magnetite ore |
| CN104894314A (en) * | 2015-06-30 | 2015-09-09 | 攀钢集团西昌钢钒有限公司 | Smelting method for converting natural magnetite to vanadium-titanium sinter in blast furnace and for rapidly reaching design capacity |
| CN114472176A (en) * | 2022-01-04 | 2022-05-13 | 承德信通首承科技有限责任公司 | Production method and device of high-vanadium pellet ore |
-
2009
- 2009-03-24 CN CNA2009100586873A patent/CN101503744A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220441A (en) * | 2011-06-01 | 2011-10-19 | 邓元忠 | Detection and analysis method for use in blast-furnace smelting of high-titanium all vanadium titanium ore |
| CN102269993A (en) * | 2011-06-27 | 2011-12-07 | 攀钢集团有限公司 | Process optimization method for sintering vanadium-titanium magnetite concentrate by large-scale sintering machine |
| CN102269993B (en) * | 2011-06-27 | 2013-07-17 | 攀钢集团有限公司 | Process optimization method for sintering vanadium-titanium magnetite concentrate by large-scale sintering machine |
| CN103820590A (en) * | 2014-02-11 | 2014-05-28 | 东北大学 | Ore and coke mixed blast furnace smelting method for vanadium-titanium magnetite ore |
| CN103820590B (en) * | 2014-02-11 | 2016-06-01 | 东北大学 | The blast-furnace smelting method for vanadium titano-magnetite of a kind of ore-coke mixed charging |
| CN104894314A (en) * | 2015-06-30 | 2015-09-09 | 攀钢集团西昌钢钒有限公司 | Smelting method for converting natural magnetite to vanadium-titanium sinter in blast furnace and for rapidly reaching design capacity |
| CN114472176A (en) * | 2022-01-04 | 2022-05-13 | 承德信通首承科技有限责任公司 | Production method and device of high-vanadium pellet ore |
| CN114472176B (en) * | 2022-01-04 | 2023-01-03 | 承德信通首承科技有限责任公司 | Production method and device of high-vanadium pellet ore |
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Open date: 20090812 |