CN103898258B - A kind of Burden distribution method of blast furnace - Google Patents
A kind of Burden distribution method of blast furnace Download PDFInfo
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- CN103898258B CN103898258B CN201410141294.XA CN201410141294A CN103898258B CN 103898258 B CN103898258 B CN 103898258B CN 201410141294 A CN201410141294 A CN 201410141294A CN 103898258 B CN103898258 B CN 103898258B
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- cloth
- time
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Abstract
The invention belongs to blast furnace ironmaking field, particularly, the present invention relates to a kind of Burden distribution method of blast furnace.Burden distribution method of blast furnace of the present invention, comprises the following steps: according to the gear α of adjustment
ncloth time t corresponding thereto
ncarry out cloth, the gear α of described adjustment
ncloth time t corresponding thereto
npass be: gear α
1cloth time t
1=t
0× Q
1+ t '-t "+t; α
ncloth time t
n=t
0× Q
n-t "+t, n>=2; Wherein, t
0for the rotating speed of blast furnace chute, t
0=7 ~ 8s/ encloses; Q1 is the cloth number of turns; T ' for material through chute to the time in stove, unit is s; " be the time delay after conversion gear, unit is s to t; T is blast furnace adjustment regulation time, t=-5 ~ 5s.Time cloth method provided by the invention, can simplify blast furnace material distribution operation, when charge adjusts, only need adjust stream γ aperture just can adjust to the right place, cloth total time and each gear cloth time need not be readjusted, and reach the object of uniform distribution, simplify blast furnace operating.
Description
Technical field
The invention belongs to blast furnace ironmaking field, particularly, the present invention relates to a kind of Burden distribution method of blast furnace.
Background technology
Can blast furnace material distribution system has material impact to the shape of gas flow distribution in stove and soft melt zone and position, be related to gas energy and make full use of and can furnace charge decline smoothly.From body of heater longitudinal section, best burden distribution should be that ore and coke present hierarchical overlay structure, and on stove inner periphery direction, the distribution of coal gas and furnace charge should be all even or substantially uniform; Existing polycyclic distributing mode, adopting the visualize of method as cloth situation of the statistics cloth number of turns, there is Railway Project in this method, when chute high speed rotating when being the statistics cloth number of turns, likely can't detect β stub bar, the cloth number of turns of statistics will be less than the actual cloth number of turns; Two when being the discontented circles of cloth, and system is added up according to the way rounded up automatically, and truly can not reflect actual cloth situation, error is large; Three is when needing conversion between different gear α in cloth process, and due to chute inertia and system call interception hysteresis quality, the cloth number of turns truly cannot describe actual cloth situation.Four is that the cloth number of turns of feedback itself is inaccurate, and when it with when pre-set value is inconsistent, will adjust blast furnace according to the cloth number of turns of feedback, frequent adjustment stream γ aperture, in the hope of reaching set(ting)value, causes the difficult control of cloth process.In a word, in blast furnace adjustment process, the simple adjustment cloth number of turns accurately cannot control burden distribution, can not truly reflect cloth track, the homogeneity of cloth can not be ensured, affect gas fluid in blast furnace distribution, the advantage of bell-less furnace top is not in full use, the lifting of the every economic and technical norms of restriction blast furnace.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, provide a kind of Burden distribution method of blast furnace---time cloth method (using second (S) as statistics dimension), with the cloth number of turns for reference, entering furnace charge criticizes necessarily, if known wherein one of the logical doses these two of cloth total time and unit time stream γ, just can determine another.Concrete adjustment process: according to the time setting the cloth number of turns and cloth one circle needs of different gear α, tentatively determine each gear cloth time, consider the actual cloth situation changed between stub bar material tail, different gear again and actual adjustment of blast furnace needs the cloth time to setting to revise, determine the cloth time of different gear, accurately control the distribution situation into furnace charge.
Burden distribution method of blast furnace of the present invention, comprises the following steps:
According to the gear α of adjustment
ncloth time t corresponding thereto
ncarry out cloth, the gear α of described adjustment
ncloth time t corresponding thereto
npass be:
Gear α
1cloth time t
1=t
0× Q
1+ t '-t "+t; α
ncloth time t
n=t
0× Q
n-t "+t, n>=2; Wherein, t
0for the rotating speed of blast furnace chute, t
0=7 ~ 8s/ encloses; Q
1, Q
nbe respectively α
1, α
nthe gear cloth number of turns; T ' for material through chute to the time in stove, unit is s; " be the time delay after conversion gear, unit is s to t; T is actual blast furnace adjustment regulation time, t=-5 ~ 5s, Dispensing principle: increase coke or reduce ore in the cloth time of a certain shelves, be conducive to the air flow method of this grade loose, reduces coke or increase ore is conducive in the cloth time of a certain shelves the air flow method suppressing this grade; During blast furnace adjustment process need adjustment air flow method, simple and flexible can realize adjusting object fast by mentioned above principle.
In the Burden distribution method of blast furnace of the invention described above, when from gear α
1transfer the files gear α successively
ncloth time sum lower than cloth total time time, if blast furnace cloth ore deposit, then gear is adjusted back successively and is carried out cloth, namely by α
npull back to α
n-1, the like until cloth time sum reaches cloth total time T; If blast furnace cloth coke, gear adjusts to last gear α
nafter, with gear α
nterminate gear as cloth until reach cloth total time T, and do not carry out gear readjustment.Wherein, P criticizes (ore deposit is criticized or coke (per) charge) for entering furnace charge described cloth total time T=P/P ', and P ' is the furnace charge amount passed through for 1 second.
Particularly: set and criticize as P into furnace charge, after stream γ reaches setting aperture, the furnace charge amount passed through for 1 second is P ', then cloth total time is T=P/P ', and according to actual needs, cloth is divided into the α of different gear
1, α
2, α
3α
n, each gear cloth time is respectively t
1, t
2, t
3t
n, chute normal speed is generally t
0: 7 ~ 8(S/ encloses), with reference to the cloth number of turns, adjust the actual cloth time of different gear α, chute when starting cloth from gear α
1start, the known set cloth number of turns is Q
1, then cloth time t
1for: t
0× Q
1, t
1inaccurate, must revise.Open furnace charge due to stream and in chute to stove, need certain hour t ', therefore, to t
1revise, t
1=t
0× Q
1+ t '.When gear is by α
1adjust to α
2time, adjust because inertia etc. is because have hysteresis quality between chute gear, when sending conversion gear instruction chute by α
1adjust to α
2during gear, have certain time-delay t ", " interior furnace charge or cloth are to original α for time t
1on gear, therefore, α is set
1during cloth time of gear, should to t
1again revise, t
1=t
0× Q
1+ t '-t "; In blast furnace actual production process, when operator need to finely tune burden distribution system according to the working of a furnace, the adjustment number of turns cannot produce a desired effect, and can not be a definite value by the adjustment of cloth time t, the t on gear α, just can bear, be generally-5 ~ 5s; Finally set cloth time t
1=t
0× Q
1+ t '-t "+t, due to chute start cloth after be a continuous blanking process, cloth gear is by α
1adjust to α successively
n(n>=2) gear, cloth terminates, therefore, α
n(n>=2) gear cloth time t
ndo not need to carry out t ' correction, need to carry out t " and t revises, and therefore, sets the actual cloth time t of each gear
n=t
0× Q
1"+t, n>=2, due in cloth process, between different gear, angular difference is substantially certain, therefore thinks that corrected time t " is a fixed number for-t.When from gear α
1transfer the files gear α successively
ncloth time sum lower than cloth total time T time, if blast furnace cloth ore deposit, then gear is adjusted back successively and is carried out cloth, namely by α
npull back to α
n-1, the like until cloth time sum reaches cloth total time T; If blast furnace cloth coke, gear adjusts to last gear α
nafter, with gear α
nterminate gear as cloth and do not carry out gear readjustment; The object of such setting is exactly that the cloth temporal summation in a word on all cloth gears equals T in order to dredge central gas stream, and according to this method, furnace charge can arrive expection cloth point, improves roof material distributing accuracy and homogeneity.
Time cloth method provided by the invention, blast furnace material distribution operation can be simplified, when charge adjustment (increase or reduce), only need adjust stream γ aperture (increase or reduce) just can adjust to the right place, cloth total time and each gear cloth time need not be readjusted, reach the object of uniform distribution, simplify blast furnace operating.
Embodiment
According to the gear α of adjustment
ncloth time t corresponding thereto
ncarry out cloth, the gear α of described adjustment
ncloth time t corresponding thereto
npass be:
Gear α
1cloth time t
1=t
0× Q
1+ t '-t "+t; α
ncloth time t
n=t
0× Q
n-t "+t, n>=2; Wherein, t
0for the rotating speed of blast furnace chute, t
0=7 ~ 8s/ encloses; Q
1, Q
nbe respectively α
1, α
nthe gear cloth number of turns; T ' for material through chute to the time in stove, unit is s; " be the time delay after conversion gear, unit is s to t; T is blast furnace actual adjustment regulation time, t=-5 ~ 5s, Dispensing principle: increase coke or reduce ore in the cloth time of a certain shelves, be conducive to the air flow method of this grade loose, reduces coke or increase ore is conducive in the cloth time of a certain shelves the air flow method suppressing this grade; During blast furnace adjustment process need adjustment air flow method, simple and flexible can realize adjusting object fast by mentioned above principle.
In the Burden distribution method of blast furnace of the invention described above, when from gear α
1transfer the files gear α successively
ncloth time sum lower than cloth total time time, if blast furnace cloth ore deposit, then gear is adjusted back successively and is carried out cloth, namely by α
npull back to α
n-1, the like until cloth time sum reaches cloth total time T; If blast furnace cloth coke, gear adjusts to last gear α
nafter, with gear α
ngear is terminated as cloth.Wherein, P criticizes (ore deposit is criticized or coke (per) charge) for entering furnace charge described cloth total time T=P/P ', and P ' is the furnace charge amount passed through for 1 second.
Embodiment 1
For blast furnace cloth ore deposit, burden distribution system is:
Cloth angle: K
43 2k
41 3k
39 3k
37 2k
35 2k
33 2
The cloth number of turns: 233222
Setting cloth total time T=105s
1, time cloth method: cloth time after revising: 15s, 22s, 22s, 15s, 15s, 10s, cloth total time T=99s
Blast furnace material distribution process starts cloth successively according to α gear (43 °, 41 °, 39 °, 37 °, 35 °, 33 °), α gear cloth total time at the end of 33 ° of clothes is 99s, do not reach setting-up time, then turn back to 35 ° and terminate cloth, complete cloth time 105S.
If 2 by number of turns cloth, each circle cloth time is 7.5s, then each gear cloth time is:
15s, 22.5s, 22.5s, 15s, 15s, 15s, cloth total time T=105s
Time cloth method is with compared with number of turns cloth, and time cloth method, using second as cloth control dimension, by cloth time and the cloth total time accurately controlling each grade second, compared with the cloth number of turns, can improve the accuracy of cloth and the tolerance range of adjustment.The error of 1 ~ 3 circle is generally had, time cloth method error 1 ~ 3 second when adding up the cloth number of turns, can only by enclosing adjustment when blast furnace is adjusted, when blast furnace needs to finely tune, adjustment one circle amplitude is excessive, does not reach control overflow, can not meet blast furnace adjustment needs.
Certainly; the present invention can also have various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art can openly make various corresponding change and modification according to of the present invention, but these change accordingly and are out of shape the protection domain that all should belong to the claim appended by the present invention.
Claims (6)
1. a Burden distribution method of blast furnace, comprises the following steps:
According to the gear α of adjustment
ncloth time t corresponding thereto
ncarry out cloth, the gear α of described adjustment
ncloth time t corresponding thereto
npass be:
Gear α
1cloth time t
1=t
0× Q
1+ t '-t "+t; α
ncloth time t
n=t
0× Q
n-t "+t, n>=2; Wherein, t
0for the rotating speed of blast furnace chute, t
0=7 ~ 8s/ encloses; Q
1for the cloth number of turns; T ' for material through chute to the time in stove, unit is s; " be the time delay after conversion gear, unit is s to t; T is blast furnace adjustment regulation time, t=-5 ~ 5s; Dispensing principle is: increase coke or reduce ore in the cloth time of a certain shelves, be conducive to the air flow method of this grade loose, reduces coke or increase ore to be conducive in the cloth time of a certain shelves the air flow method suppressing this grade.
2. Burden distribution method of blast furnace according to claim 1, is characterized in that, from gear α
1transfer the files gear α successively
n.
3. Burden distribution method of blast furnace according to claim 1 and 2, is characterized in that, uses blast furnace cloth ore deposit, from gear α
1transfer the files gear α successively
ncloth time sum lower than cloth total time T, gear is by α
npull back to α
n-1, until cloth time sum reaches cloth total time.
4. Burden distribution method of blast furnace according to claim 3, is characterized in that, wherein, P criticizes for entering furnace charge described cloth total time T=P/P ', and P ' is the furnace charge amount passed through for 1 second.
5. Burden distribution method of blast furnace according to claim 1 and 2, is characterized in that, uses blast furnace cloth coke, from gear α
1transfer the files gear α successively
ncloth time sum lower than cloth total time T, gear adjusts to last gear α
nafter, with gear α
ngear is terminated until reach cloth total time T as cloth.
6. Burden distribution method of blast furnace according to claim 5, is characterized in that, wherein, P criticizes for entering furnace charge described cloth total time T=P/P ', and P ' is the furnace charge amount passed through for 1 second.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410141294.XA CN103898258B (en) | 2014-04-09 | 2014-04-09 | A kind of Burden distribution method of blast furnace |
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|---|---|---|---|
| CN201410141294.XA CN103898258B (en) | 2014-04-09 | 2014-04-09 | A kind of Burden distribution method of blast furnace |
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| CN103898258A CN103898258A (en) | 2014-07-02 |
| CN103898258B true CN103898258B (en) | 2016-03-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106755670B (en) * | 2016-12-14 | 2019-01-01 | 四川德胜集团钒钛有限公司 | A kind of smelting process of vanadium titano-magnetite |
| CN113186363A (en) * | 2021-04-14 | 2021-07-30 | 鞍钢股份有限公司 | Method for inhibiting periodic fluctuation of blast furnace airflow |
| CN114540563A (en) * | 2022-02-20 | 2022-05-27 | 山西太钢不锈钢股份有限公司 | Method for setting material distribution parameters of blast furnace |
| CN115232899B (en) * | 2022-07-29 | 2024-01-19 | 马鞍山钢铁股份有限公司 | Method for precisely controlling distribution amount of specific area in multi-ring distribution process of blast furnace |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103088174A (en) * | 2011-10-31 | 2013-05-08 | 上海宝信软件股份有限公司 | Blast furnace time distribution device |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103088174A (en) * | 2011-10-31 | 2013-05-08 | 上海宝信软件股份有限公司 | Blast furnace time distribution device |
Non-Patent Citations (1)
| Title |
|---|
| 张钢1350m3高炉上料程序的改进;刘昌明等;《科学之友》;20110930;63-64 * |
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Effective date of registration: 20220623 Address after: 271104 Shuangquan Road, Gangcheng District, Jinan City, Shandong Province Patentee after: LAIGANG GROUP YINSHAN SHAPED STEEL Co.,Ltd. Address before: 271104 No.99, Fuqian street, Gangcheng District, Laiwu City, Shandong Province Patentee before: LAIWU STEEL Group Ltd. |
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