CN103981309B - Simulation method of blast furnace burden distribution form - Google Patents
Simulation method of blast furnace burden distribution form Download PDFInfo
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- CN103981309B CN103981309B CN201410155588.8A CN201410155588A CN103981309B CN 103981309 B CN103981309 B CN 103981309B CN 201410155588 A CN201410155588 A CN 201410155588A CN 103981309 B CN103981309 B CN 103981309B
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Abstract
The invention provides a simulation method of a blast furnace burden distribution form. The simulation method comprises the following steps of calculating practical material-feeding cycle number of an iron-containing raw material and coke by monitoring practical total material-feeding time of the iron-containing raw material and practical total material-feeding time of the coke and correcting practical each-cycle material-feeding times of the iron-containing raw material and coke, drawing an iron-containing raw material distribution schematic diagram at a position of each-cycle material-distribution inclined angle of the iron-containing raw material distribution according to the corresponding practical material-distribution cycle number, and drawing a coke distribution schematic diagram at a position of each-cycle material-distribution inclined angle of the coke distribution according to a product of the corresponding practical material-distribution cycle number and a ratio of a coke volume to an iron-containing raw material volume. The simulation method only considers a relative change of a material distribution angle and material-feeding time, has simple simulation processes, accords with actual production, realizes more visual observation of a practical material-distribution form by graphical display and has a strong guidance meaning for production judgment and adjustment.
Description
Technical field
The present invention relates to metallurgical technology field, more particularly, relate to a kind of analogy method of blast furnace bellless furnace top spill form.
Background technology
Shaft furnace charging system (being also called burden distribution system) is one of important operating duty of blast furnace, it determines the initial configuration that blast furnace burden distributes in stove, then affect gas fluid distrbution and smooth operation of furnace state in State of Blast Furnace, blast furnace is normally produced and plays very important effect.Analog blast furnace cloth situation, in conjunction with actual production index, thus evaluate the reasonableness of cloth, the reasonableness of charging system, just can find the improvement adjustment direction of charging system, so promote gas fluid in blast furnace distribution more rationally, smooth operation of furnace situation and technico-economical comparison continuative improvement.The method of simulation blast furnace material distribution situation generally adopts according to blast furnace material distribution device parameter in current industry, uses Newton's laws of motion to calculate charging movement track and drop point site, and the method has the disadvantages such as calculation of complex, result accuracy influence factor are many.
Summary of the invention
For the deficiencies in the prior art, an object of the present invention is to solve in above-mentioned prior art the one or more problems existed.Such as, an object of the present invention be to provide a kind of can the method for simple analog blast furnace roof material distributing form.
To achieve these goals, the invention provides a kind of analogy method of blast furnace material distribution form.Described blast furnace material distribution adopts polycyclic distributing, each cloth ring position corresponds to a cloth angle of inclination, distributor chute carries out the multi-turn revolution of 360 ° with the cloth angle of inclination corresponding to it in each cloth ring position described, described furnace charge comprises iron-bearing material and coke, described method comprises: setting iron-bearing material and the predetermined blanking time of coke under different cloth ring position, monitoring reality total blanking time of iron-bearing material and reality total blanking time of coke, the actual blanking time of each the cloth ring position except last ring using the described predetermined blanking time as iron-bearing material and coke, remove the actual blanking time of difference as last ring of iron-bearing material of the actual blanking time sum of other cloth ring position outside last ring using the reality of iron-bearing material total blanking time and iron-bearing material, and remove the actual blanking time of difference as last ring of coke of the actual blanking time sum of other cloth ring position outside last ring using the reality of coke total blanking time and coke, according to actual blanking time and the chute rotating speed of iron-bearing material and the every ring of coke, calculate the actual cloth number of turns of iron-bearing material and the every ring of coke, draw iron-bearing material and coke distribution schematic diagram, comprise the following steps: every predetermined distance drafting scale marks and using described cloth angle of inclination as the unit of the first coordinate axis in the first coordinate axis, furnace charge distributing line is on a predetermined date drawn along the direction being parallel to described first coordinate axis centered by the point that the position apart from described first coordinate axis predetermined distance is determined by the cloth angle of inclination corresponding to furnace charge each cloth ring position, wherein, the actual cloth number of turns that the length of the distributing line corresponding to iron-bearing material each cloth ring position equals iron-bearing material each cloth ring position is multiplied by coefficient N, N >=1, the length of the distributing line corresponding to coke each cloth ring position equals the actual cloth number of turns of coke each cloth ring position and describedly often criticizes the long-pending of the volume ratio of coke and iron-bearing material in furnace charge and be multiplied by described coefficient N again, by described drafting furnace charge on a predetermined date the step of distributing line draw the distributing line of the furnace charge on multiple material loading date.
According to an exemplary embodiment of the analogy method of blast furnace material distribution form of the present invention, described coefficient N can ensure that the distributing line length of each ring of furnace charge is all not less than distance in described first coordinate axis between adjacent scale marks and each ring distributing line does not overlap.
According to an exemplary embodiment of the analogy method of blast furnace material distribution form of the present invention, described coefficient N is 64.
According to an exemplary embodiment of the analogy method of blast furnace material distribution form of the present invention, described distributing line has predetermined width.
According to an exemplary embodiment of the analogy method of blast furnace material distribution form of the present invention, in the distributing line step of the furnace charge on described drafting multiple material loading date, the distance between the distributing line of the furnace charge on each material loading date and described first coordinate axis becomes large according to the sequencing on material loading date.
According to an exemplary embodiment of the analogy method of blast furnace material distribution form of the present invention, the distributing line of described iron-bearing material and the distributing line of described coke indicate with different colours.
According to an exemplary embodiment of the analogy method of blast furnace material distribution form of the present invention, the cloth ring position of described iron-bearing material is 3, and the cloth ring position of described coke is 5.
According to an exemplary embodiment of the analogy method of blast furnace material distribution form of the present invention, described cloth angle of inclination is 13 ~ 53 °.
According to an exemplary embodiment of the analogy method of blast furnace material distribution form of the present invention, the cloth angle of inclination of described iron-bearing material is 30.8 ~ 33.8 °, and the cloth angle of inclination of described coke is 16.8 ~ 34.7 °.
According to an exemplary embodiment of the analogy method of blast furnace material distribution form of the present invention, described method coordinates the drafting realizing described iron-bearing material and coke distribution schematic diagram by EXCEL and VBA programming software.
Compared with prior art, beneficial effect of the present invention comprises: the relative change only considering cloth angle and blanking time, analogy method is simple and be close to and produce actual, and graphic software platform can observe actual cloth form more intuitively, to produce judge and the directive significance of adjustment stronger.
Accompanying drawing explanation
By the description carried out below in conjunction with accompanying drawing, above and other object of the present invention and feature will become apparent, wherein:
Fig. 1 is the schematic diagram of blast furnace bellless furnace top spill.
Fig. 2 is the parameter involved by the analogy method of blast furnace material distribution form according to an exemplary embodiment of the present.
Fig. 3 is the ore that obtains of the analogy method of exemplary embodiment of the present blast furnace material distribution form and coke distribution schematic diagram.
Embodiment
Hereinafter, the analogy method according to blast furnace material distribution form of the present invention will be described by reference to the accompanying drawings in detail with exemplary embodiment.
Fig. 1 is the schematic diagram of blast furnace bellless furnace top spill.Fig. 2 is the parameter involved by the analogy method of blast furnace material distribution form according to an exemplary embodiment of the present.Fig. 3 is the ore that obtains of the analogy method of exemplary embodiment of the present blast furnace material distribution form and coke distribution schematic diagram.
As shown in Figure 1, blast furnace material distribution adopts polycyclic distributing, polycyclic distributing refers to that the quantity of cloth ring position is more than or equal to 2, ring more than 10 can be reached at most, particularly, different (the i.e. α angles of Fig. 1, cloth angle of inclination is arranged at distributor chute, can referred to as cloth angle) condition under by furnace charge cloth in stove, form the several annulus being the center of circle with blast furnace center, wherein, each cloth ring position (referred to as ring position) is corresponding to a cloth angle of inclination, the cloth inclination angle scope that bell-less BF tep apparatus for distributing-chute allows: normal when producing 13 ~ 53 °, during maintenance 70 °, mechanical position limitation 54 °, so cloth inclination angle scope can by 13 ~ 53 ° of values, the number of turns that distributor chute carries out 360 ° of revolutions (the angle of revolution β namely in Fig. 1 is 360 °) in some cloth ring positions with the cloth angle of inclination corresponding to it is called the cloth number of turns, furnace charge mainly comprises iron-bearing material (such as, iron ore) and coke, and in the present embodiment, by cloth coke again after complete for whole for ore cloth during cloth, the cloth ring position of ore can be 3, the cloth ring position of coke can be 5.
The analogy method of blast furnace material distribution form comprises the following steps according to an exemplary embodiment of the present invention:
(1) the shaft furnace charging system of bell-less BF tep is resolved, charging system comprises multiple ore (i.e. iron ore) blanking angle (many rings) and corresponding blanking time, multiple coke blanking angle (many rings) and corresponding blanking time, namely obtains ore and the predetermined blanking time of coke under different cloth ring position (or being called the setting blanking time) according to existing charging system.
(2) according to ore total blanking time and coke total blanking time of actual measurement, obtain the actual blanking time of ore and coke each blanking angle (in other words every ring) correspondence, wherein, the actual blanking time of ore and coke each the cloth ring position except last ring equals the predetermined blanking time of ore and coke in existing charging system; Last ring of ore actual blanking time deducts all setting blanking time (i.e. the actual blanking time sum of other the ring position of ore except last ring) above by the ore recorded total blanking time, instead of the setting blanking time of last ring; Last ring of coke actual blanking time deducts all setting blanking time (i.e. the actual blanking time sum of other the ring position of coke except last ring) above by the coke recorded total blanking time, instead of the setting blanking time of last ring.
(3) according to ore and the actual blanking time of the every ring of coke and the rotating speed of distributor chute, the actual cloth number of turns of ore and the every ring of coke is calculated.
(4) ratio often criticizing char volume and ore volume in furnace charge is calculated.
(5) the analog information figure of blast furnace material distribution form is drawn, namely iron-bearing material and coke distribution schematic diagram is drawn, comprise the following steps: in the first coordinate axis (such as, transverse axis) on draw scale marks and unit using cloth angle of inclination as the first coordinate axis every predetermined distance, furnace charge distributing line is on a predetermined date drawn along the direction being parallel to described first coordinate axis centered by the point that the position apart from the first coordinate axis predetermined distance is determined by the cloth angle of inclination corresponding to furnace charge each cloth ring position, wherein, the actual cloth number of turns that the length of the distributing line corresponding to iron-bearing material each cloth ring position equals iron-bearing material each cloth ring position is multiplied by coefficient N, N >=1, the actual cloth number of turns that the length of the distributing line corresponding to coke each cloth ring position equals coke each cloth ring position is multiplied by described coefficient N again with the long-pending of volume ratio of often criticizing coke and iron-bearing material in furnace charge.
Preferably, coefficient N can ensure that the distributing line length of coke and each ring of ore is all not less than the distance on transverse axis between adjacent scale marks, and coefficient N can not be excessive, to avoid adjacent distributions line to overlap, thus can know the distribution of reaction furnace charge.
(6) draw the distributing line of the furnace charge on multiple material loading date by the mode of step (5), wherein, the distance between the distributing line of the furnace charge on each material loading date and described first coordinate axis becomes large gradually according to the sequencing on material loading date.
Further, described distributing line has predetermined width, so that observe, and close with coke in actual production and the ore situation in layered distribution in blast furnace.
In addition, for ease of differentiating, the distributing line (or histogram) of ore and coke can be indicated with different colours.For close with practical situation, represent that ore distributes with red rectangle (grey rectangle namely in Fig. 3), black rectangle represents coke distribution.Red rectangle is corresponding with the cloth angle of inclination of ring each in charging system with the display position of black rectangle.In addition, the carrier of red rectangle and black rectangle display includes but not limited to EXCEL electrical form, various advanced language programming environment etc.
In one example, according to above-mentioned steps, blast furnace bellless furnace top spill is simulated, according to reality total blanking time of surveying ore and coke, revise the actual blanking time of ore and each ring of coke, and calculate the actual cloth number of turns of ore and coke each ring oven material, in EXCEL electrical form, the various parameters of typing charging system, specifically as shown in Figure 2.
In addition, the ratio often criticizing furnace charge char volume and ore volume is 0.68, coefficient N is taken as 64, programmed by VBA according to the data of typing in EXCEL electrical form, operation result (part) is illustrated in fig. 3 shown below, wherein, the width of EXCEL cell is 24 pixels, is highly 26 pixels, and the distance value namely on transverse axis between adjacent scale marks is 24 pixels.Fig. 3 shows the cloth simulation situation of 5 days, is followed successively by the August 1 of certain year from top to bottom to August 5.One row word of transverse axis display is cloth inclination angle, the Far Left of transverse axis is 35.2 degree, rightmost is 29.9 degree, can very clearly find out according to Fig. 3, since the August, ore and coke distribution all move to centre, and corresponding Gas Flow is dredged to edge, and the width of each ring of ore and coke does not change.
In sum, according to the analogy method of blast furnace material distribution form of the present invention, need not the calculating of large amount of complex, shaft furnace charging institution adjustment every day direction can be shown easily, be close to and produce reality, only consider the relative change of cloth angle and blanking time, analog result to produce judge and the directive significance of adjustment stronger.
Although above by describing the present invention in conjunction with exemplary embodiment, it will be apparent to those skilled in the art that when not departing from the spirit and scope that claim limits, various amendment and change can be carried out to exemplary embodiment of the present invention.
Claims (10)
1. the analogy method of a blast furnace material distribution form, described blast furnace material distribution adopts polycyclic distributing, each cloth ring position corresponds to a cloth angle of inclination, distributor chute carries out the multi-turn revolution of 360 ° with the cloth angle of inclination corresponding to it in each cloth ring position described, the furnace charge of described cloth comprises iron-bearing material and coke, and described method comprises:
Setting iron-bearing material and the predetermined blanking time of coke under different cloth ring position, monitoring reality total blanking time of iron-bearing material and reality total blanking time of coke;
The actual blanking time of other each the cloth ring position except its separately last cloth ring position using the described predetermined blanking time as iron-bearing material and coke, the actual blanking time of difference as last cloth ring position of iron-bearing material of the actual blanking time sum of other cloth ring position outside its last cloth ring position is removed using the reality of iron-bearing material total blanking time and iron-bearing material, and the actual blanking time of difference as last cloth ring position of coke of the actual blanking time sum of other cloth ring position outside its last cloth ring position is removed using the reality of coke total blanking time and coke,
According to iron-bearing material and the actual blanking time of coke each cloth ring position and the rotating speed of distributor chute, calculate the actual cloth number of turns of iron-bearing material and coke each cloth ring position;
Every predetermined distance drafting scale marks and using described cloth angle of inclination as the unit of the first coordinate axis in the first coordinate axis, furnace charge distributing line is on a predetermined date drawn along the direction being parallel to described first coordinate axis centered by the point that the position apart from described first coordinate axis predetermined distance is determined by the cloth angle of inclination corresponding to furnace charge each cloth ring position, wherein, the actual cloth number of turns that the length of the distributing line corresponding to iron-bearing material each cloth ring position equals iron-bearing material each cloth ring position is multiplied by coefficient N, N >=1, the actual cloth number of turns that the length of the distributing line corresponding to coke each cloth ring position equals coke each cloth ring position is multiplied by described coefficient N again with the long-pending of volume ratio of often criticizing coke and iron-bearing material in furnace charge,
The distributing line of the furnace charge on multiple material loading date is drawn by the step of described drafting furnace charge distributing line on a predetermined date.
2. the analogy method of blast furnace material distribution form according to claim 1, is characterized in that, described coefficient N can ensure that the distributing line length of each ring of furnace charge is all not less than distance in described first coordinate axis between adjacent scale marks and each ring distributing line does not overlap.
3. the analogy method of blast furnace material distribution form according to claim 2, is characterized in that, described coefficient N is 64.
4. the analogy method of blast furnace material distribution form according to claim 1, is characterized in that, described distributing line has predetermined width.
5. the analogy method of blast furnace material distribution form according to claim 1, it is characterized in that, in the distributing line step of the furnace charge on described drafting multiple material loading date, the distance between the distributing line of the furnace charge on each material loading date and described first coordinate axis becomes large according to the sequencing on material loading date.
6. the analogy method of blast furnace material distribution form according to claim 1, is characterized in that, the distributing line of described iron-bearing material and the distributing line of described coke indicate with different colours.
7. the analogy method of blast furnace material distribution form according to claim 1, is characterized in that, the cloth ring position of described iron-bearing material is 3, and the cloth ring position of described coke is 5.
8. the analogy method of blast furnace material distribution form according to claim 1, is characterized in that, described cloth angle of inclination is 13 ~ 53 °.
9. the analogy method of blast furnace material distribution form according to claim 8, is characterized in that, the cloth angle of inclination of described iron-bearing material is 30.8 ~ 33.8 °, and the cloth angle of inclination of described coke is 16.8 ~ 34.7 °.
10. the analogy method of blast furnace material distribution form according to claim 1, is characterized in that, described method coordinates the drafting realizing described iron-bearing material and coke distribution schematic diagram by EXCEL and VBA programming software.
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| CN201410155588.8A CN103981309B (en) | 2014-04-18 | 2014-04-18 | Simulation method of blast furnace burden distribution form |
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| CN111394533B (en) * | 2020-04-29 | 2022-03-29 | 江苏省沙钢钢铁研究院有限公司 | Blast furnace burden distribution condition evaluation method and evaluation system |
| CN112308296B (en) * | 2020-10-12 | 2023-04-18 | 中冶赛迪信息技术(重庆)有限公司 | Method and system for predicting distribution of furnace burden in blast furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102732659A (en) * | 2011-04-11 | 2012-10-17 | 宝山钢铁股份有限公司 | Burden surface profile control method of blast furnace burden distribution and control system |
| CN103131809A (en) * | 2011-11-23 | 2013-06-05 | 经文波 | Mathematical model for blast furnace non-bell multi-ring burden distribution |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000178617A (en) * | 1998-01-23 | 2000-06-27 | Nippon Steel Corp | Method for charging charging material for activating furnace core part in blast furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102732659A (en) * | 2011-04-11 | 2012-10-17 | 宝山钢铁股份有限公司 | Burden surface profile control method of blast furnace burden distribution and control system |
| CN103131809A (en) * | 2011-11-23 | 2013-06-05 | 经文波 | Mathematical model for blast furnace non-bell multi-ring burden distribution |
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