CN1036409A - Polycyclic distributing chute and cloth control method thereof - Google Patents
Polycyclic distributing chute and cloth control method thereof Download PDFInfo
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- CN1036409A CN1036409A CN 88101583 CN88101583A CN1036409A CN 1036409 A CN1036409 A CN 1036409A CN 88101583 CN88101583 CN 88101583 CN 88101583 A CN88101583 A CN 88101583A CN 1036409 A CN1036409 A CN 1036409A
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- chute
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Abstract
The novel chute of a kind of blast furnace bell-less roof material distributing, the cross section of chute is a rectangle, its discharge end still has the additional discharge port of at least one biasing except that main discharge port, have two bursts of materials flows cloth simultaneously at least.Under the constant situation of the constant and cloth meteor in chute inclination angle, utilize the difference of chute to turn to and forms a cloth cycle by several batch of materials, work out out tens kinds of adjusting furnace charges at the radially-arranged burden distribution system of furnace throat, for cloth control provides reliable means.
Description
The clock-type furnace roof can only be realized the monocycle cloth, and the charge level profile of furnace throat vertical section is the M type, and this type of blast furnace gas utilizes not good enough, can not satisfy production requirement.The no bell furnace roof of Luxembourg Legille invention adopts the chute cloth of adjustable inclination angle, but the cross section of its used chute is semicircle (seeing USPat № 3889791), have only one materials flow during cloth, in order to realize polycyclic distributing, each cloth process all will be adjusted the chute inclination angle.And how on earth the chute inclination angle is adjusted, and then will decide according to the coal gas distributions situation of stock column in the stove.Therefore instrument that can detect coal gas distributions in the stove automatically and the mathematical model of making corresponding adjustment according to measurement gained information energy immediate feedback commander chute inclination angle will be arranged.This is a difficult problem that waits to solve.On the other hand, for most of blast furnace, its volume is less than 2000 meters
3, each cloth time is very short, utilizes the way of adjusting the chute inclination angle to realize that polycyclic distributing is then more difficult.For above-mentioned reasons, domestic no bell furnace roof still can only the monocycle cloth at present.External no bell furnace roof also has only the minority blast furnace to realize polycyclic distributing.
At the problems referred to above, the present invention proposes a kind of polycyclic distributing chute and cloth control method thereof, and the cross section of this chute is a rectangle, and its discharge end still has the additional discharge port of at least one biasing except that main discharge port, have two bursts of materials flows cloth simultaneously at least, make the furnace throat charge level be many rings and distribute.Under the situation that the chute inclination angle is constant and the cloth flow is constant, utilize the difference of chute to turn to and form a cloth cycle by several batch of materials, just but permutation and combination becomes tens kinds to regulate the radially burden distribution system of cloth situation of furnace throats, for cloth control provides reliable and means easily.Illustrated below in conjunction with 12 width of cloth sketches.
Fig. 1 polycyclic distributing chute;
The connection of Fig. 2 chute and distributor and utilization loading and unloading frame loading and unloading chute;
Assembly relation between Fig. 3 chute afterbody cushion block and the distributor apron shell;
The special-purpose loading and unloading of Fig. 4 frame;
The streamline synoptic diagram of furnace charge in chute when Fig. 5 chute does not change;
The streamline synoptic diagram of furnace charge in chute when Fig. 6 chute is just changeing;
The streamline synoptic diagram of furnace charge in chute during the counter-rotating of Fig. 7 chute;
Fig. 8～10 utilize the difference of chute to turn to and form four kinds of typical clothes that a cloth cycle is obtained by three batch of materials;
Figure 12 utilizes the difference of chute to turn to and forms the radially diagrammatic sketch that distributes of coke percentage ratio of 24 kinds of reflection furnace throats that a cloth cycle obtained by three batch of materials.
Embodiment
The polycyclic distributing chute has been designed multiple series product, and wherein the width of 620 type chutes is 0.9m, and length is 2m, the about 4t of weight.With the special use loading and unloading frame width 1m that 620 type chutes match, length 3m, the about 2t of weight.This equipment has been implemented to go into operation on certain blast furnace.Utilize the difference of chute to turn to and regulate furnace charges also on certain blast furnace, to practice at the radially-arranged burden distribution system of furnace throat by 24 kinds of forming that a cloth cycle worked out of three batch of materials, respond well.
The polycyclic distributing chute of Fig. 1 has a main discharge port (M
01) and the additional discharge port (M of two biasings
02And M
03), cross section is rectangle and is made up of following part: what bottom surface was straight has two biasing breach at the curved bottom land (1) of feeding end (Mi) at discharge end, and the two sides has the side wall (4,5) of hook (2,3).Wherein the jagged breach with bottom land (1) of a side wall (5) is relative sharp, three and side wall (4,5) top board (6 of Xiang Lianing, 7,8), three suspension ring (9,10 that are fixed on the top board (6,8), 11), two charging guide plates (12,13) that link to each other with side wall (5) and top board (7,8), at bottom land (1) and side wall (4,5) and the inboard of charging guide plate (12,13) be fixed with removable abrasion-proof backing block (14), bottom land (1) arc tips extend the band chute (15) afterbody (16)).
Fig. 2 has represented that polycyclic distributing chute (17) comes distributor (structure of this distributor sees the patent that another part applied for simultaneously for details) and stretches on two gudgeons (19) of the apron shell (18) in the stove.Quoin (20) (see figure 3) that can change chute inclination angle (2) is housed in the lateral chute of chute afterbody (16) (15).By wedge-shaped indentation (21) self-centering and the location on cushion block (20 ┦ buy unit of weight measurement, about six liang Jia 7) and the apron shell.This assembly method makes chute (17) fixed and easy to loading and unloading.Use different cushion block (20) the chute bottom surface of size 40 °, 45 °, 50 ° and 55 ° four kinds selections (other angles also can design corresponding cushion block) can be arranged with respect to the inclination angle (2) of blast furnace medullary ray, but in actually operating,, can not carry out good cloth control so do not change cushion block because the stockline height can be selected yet.
Fig. 4 is a special use loading and unloading frame vertical view of changing chute, and the loading and unloading frame is to be meant total steelframe by the steelframe (32) that two longerons (22,23) and other members weldering system form, so (32) are represented with arrow among the figure, and this is the outer patent figure representation of figure.Be welded with two crossbeams (24,25) on the front end end face, two rods (26,27) end passes and leans out crossbeam (24), and the other end inserts crossbeam (25) and integrally welded.Kong Youyi the bolt (29) and the nut collar thereof that pass crossbeam (25) at steelframe (32) middle part have mounted one group of damper weight (28) at steelframe (32) afterbody.
Stretch into stove interior (Fig. 2) by the outer suspension hook (30) of stove by working hole (31) when changing chute and sling chute front end (17) to level attitude, at this moment chute (17) exposes outside the stove for preceding half section, utilize electric block to sling loading and unloading framves (32) again with rod (26,27) the suspension ring (10 that lean out end insertion chute, 11), the hole of running through loading and unloading frame crossbeam (25) and chute suspension ring (9) with bolt (29), and fix with nut collar, loading and unloading frame and chute are linked into an integrated entity, adjust damper weight (28) and make chute and loading and unloading frame thereof be in equilibrium state, chute is broken off relations and hangs out outside the stove from the gudgeon (10) of distributor apron shell.Also only need carry out inverse operation with loading and unloading frame and the outer crane of stove when new chute reinstalls gets final product.Change chute inclination angle (2) if desired and change cushion block (20), as long as open forward and backward working hole (31 simultaneously, 33), chute front end (17) is sling slightly, and the breach (21) that makes chute afterbody (16) and cushion block (20) thereof break away from apron shell (18) promptly can take out the cushion block (20) in the chute afterbody chute (15) and put into new cushion block from back working hole (33).
Streamline when Fig. 5 to 7 has represented furnace charge by chute; When Fig. 5 represented that chute does not change, materials flow is parallel lines flowed in the chute bottom surface, and the width of the flow of three discharge ports and three discharge ports is proportional; When Fig. 6 represents that chute just changes (counter clockwise direction of this figure), be subjected to the influence of Ke Shi power to produce traversing along the vertical mobile furnace charge of chute, therefore the direction that moves and the switched in opposite of chute make the i.e. materials flow amount increase of main discharge port of intact oral-lateral, and the materials flow amount of a jagged side reduces; When Fig. 7 represented chute counter-rotating (clockwise direction of this figure), streamline moved to jagged lateral deviation, and the materials flow amount by breach is increased, and the intact oral-lateral i.e. flow of main discharge port reduces.
According to the mechanical characteristic of above-mentioned materials flow, can regulate the cloth amount ratio of several bursts of materials flows of polycyclic distributing chute.Say that simply chute makes the edge load of blast furnace increase the weight of when just changeing; During the chute counter-rotating central concentrated load of blast furnace is increased the weight of.And rotating speed is high more obvious more.Therefore, under the situation of other parameter constants, utilize the difference of chute to turn to and different rotating speeds, can regulate furnace charge easily and distribute at the furnace throat radial.
Regulating furnace charge is the ventilation property of regulating stock column in the stove in the radially-arranged purpose of furnace throat, makes blast furnace gas composition or gas temperature more reasonable along the shaft radial distribution.The furnace charge that is distributed in the stove can be divided into two big classes: a class is mineral aggregate and flux, and the abbreviation ore deposit is criticized with O and represented; Another kind of is coke, is called for short coke (per) charge and represents with C.During no bell roof material distributing, every batch of material is all criticized with coke (per) charge by the ore deposit and is formed, and is distributed in the stove respectively at twice.Introduce the charge symbol that has subscript " 1 " and " 2 " below:
O
1-chute is just changeing the cloth ore deposit to be criticized;
O
2Criticize in-chute counter-rotating cloth ore deposit;
C
1-chute counter-rotating cloth coke (per) charge;
C
2-chute is just changeing the cloth coke (per) charge.
Chute is just changeing cloth ore deposit (being that blast furnace edge mineral aggregate is many) and counter-rotating cloth Jiao (being that the blast furnace central coke is many) helps the centre of development air-flow and suppresses the edge air-flow, therefore gets same subscript " 1 ".Otherwise, chute counter-rotating Bu Kuang and just changeing cloth Jiao and all help developing the edge air-flow and suppress central gas stream, so get same subscript " 2 ".
If shaft furnace charging adopts O
1C
1O
1C
1O
1C
1Replace cloth system, consequently criticize near furnace wall in the ore deposit, and coke is tending towards the stove heart, makes blast furnace suppress air-flow centre of development, edge air-flow.If blast furnace adopts O
2C
2O
2C
2O
2C
2Replace cloth system, the result is that development edge air-flow suppresses central gas stream.This is two kinds of egregious cases.Cooperate several batch of materials to form cloth cycles as long as utilize the chute difference to turn to, just can reach tens kinds of burden distribution systems.Corresponding with these burden distribution systems, can make furnace throat radially the coal gas distributions tens kinds of variations are also arranged.Specifically, if form the cloth cycle with two batch of materials, utilizing the difference of chute to turn to can have 10 kinds of different burden distribution systems; If form the cloth cycle with three batch of materials, 24 kinds of different burden distribution systems then arranged; If form the cloth cycle with four batch of materials, 64 kinds of different burden distribution systems then arranged; Or the like.Forming the cloth cycle with three batch of materials below is example, and handiness and feasibility that the polycyclic distributing chute is regulated the furnace throat cloth are described.
Table 1 is that the chute rotating speed is constant, the chute inclination angle is constant, furnace roof batch can discharge flow is constant, under same conditions such as stockline height, only utilizes the difference of chute to turn to three batch of materials and forms 24 kinds of different burden distribution systems that a cloth cycle is obtained.Every kind of burden distribution system has all been listed digital code in the table, and the tens of digital code is that target summation under the code name is criticized in three ore deposits, and units is a target summation under three coke (per) charge code names.
Fig. 8 to 11 is results of four kinds of typical clothes, and X-coordinate is represented throat diameter, and the ordinate zou dash area is represented through the coke percentage ratio height behind the one-period cloth.The digital code that the numeral in the upper left corner is promptly annotated in the table 1 among the figure is as code name " 33 " the expression O of Fig. 8
1C
1O
1C
1O
1C
1Be the burden distribution system in cycle, the code name of Figure 11 " 66 " expression O
2C
2O
2C
2O
2C
2Be the burden distribution system in cycle, above-mentioned two kinds of egregious cases that Here it is.The former centre of development air-flow suppresses the edge air-flow, because of big edge, coke percentage ratio height center little.The latter is opposite, and big center, coke percentage ratio height edge is little, therefore helps developing the edge air-flow and suppresses central gas stream.Be that cloth cycle of code name is O with " 44 " among Fig. 9
2C
1O
1C
1O
1C
2, to furnace wall, and criticize on the contrary by the ore deposit to the stove heart one substandard cloth for coke (per) charge two substandard cloth, so higher near the coke layer thickness stove medullary ray.Be that cloth cycle of code name is O with " 55 " among Figure 10
2C
1O
1C
2O
2C
2, twice employing of coke (per) charge just changeed, ought to be higher near the coke layer height furnace wall, but near the area the furnace wall is big, and adding once that the ore deposit criticizes also to adopt just changes, and therefore makes coke layer thickness milder along the radially-arranged percentage ratio curve ratio of furnace throat.
Figure 12 by model trial and computer calculates obtain utilize chute differently turn to and form the coke percentage ratio distribution curves of 24 kinds of combination charges in cloth cycle by three batch of materials, to make up charges corresponding with 24 kinds of table 1 for it.As seen from the figure, along with the code name numeral strengthens gradually, the percentage ratio height that thickness of coke layer radially distributes is increased toward the furnace wall direction gradually by the stove center.Wherein respectively there are three kinds of different loading sequences code name " 44 ", " 45 ", " 54 " with " 55 ", and the result is basic identical because of the identical event of code name cloth.
Adjust cloth when the Changing Pattern of table 1 and Figure 12 is given operation and seek best cloth and bring convenience.The main foundation that operator adjust cloth is the furnace throat that writes down of operation room or the coal gas curve on shaft top.For example the burden distribution system that is adopted is to be the cycle cloth system of code name with " 55 ", as the CO at stove center is less near the CO coal gas curve discovery furnace wall of obtaining is too much, illustrate and need to suppress air-flow centre of development, edge air-flow, regulate that cloth is appropriate to the occasion to be selected for use than the little numeral of " 55 " code name.When selecting, can subtract from the units of " 55 " 1 or tens subtract 1 direction and select.So desirable " 54 " and " 45 " these two kinds of cloth systems.Made moderate progress after these two kinds of systems but still disliked not enough if try out, then can be further from the units of " 54 " and " 45 " subtract 1 or tens subtract 1 direction and select, so available " 53 " " 44 " and " 35 " these three kinds of systems.If found that " 35 " relatively met the requirements after trying out these three kinds of systems, but dislike central gas stream higher, and then can use " 36 " instead and be the burden distribution system of code name.Certainly, how on earth each operator selects to depend on particular case and individual purpose, as long as electrical control is included the digital-to-analogue software of table 1 in the material loading program and is stored in the computer, just can select for use at any time during operation.
The combination charge of table 1 and the cloth result of Figure 12 are that conditions such as the rotating speed at chute is constant, the stockline height is constant, furnace roof batch can discharge flow is constant are not only utilized chute differently turns to and forms the result that cloth loop cycle cloth is obtained by three batch of materials.Therefore, operator select also can regulate roof material distributing in conjunction with the selection of chute rotating speed, stockline height and discharge gate opening degree and make cloth more reasonable the suitable burden distribution system except utilizing table 1.
More than introduced the cloth control method of polycyclic distributing chute under the constant situation in chute inclination angle.The polycyclic distributing chute at constant inclination angle also can be used for the processing of some accident of blast furnace.For example on the stove medullary ray, produce in " pipeline ", when promptly the central gas stream surplus needs stifled " pipeline ", then can temporarily use normal burden distribution system instead O
2C
2O
2C
2O
2C
2Cloth system, and adopt the top gear rotating speed, the ore deposit is criticized concentrate cloth to the stove center and coke cloth to the edge, treat to return normal burden distribution system after blast furnace transfers to normally.And for example collapse material, make the charge level of this side low excessively, then can adopt fan-shaped cloth, make chute low speed forward and backward in certain angular range, through transferring normal burden distribution system behind one or two batch of material again to when certain side generation of blast furnace.Chute is aimed at certain orientation fixed point cloth if desired, stop after then chute can being idled up to this orientation, and the cloth of fixing a point then, three strands of materials flow blanking simultaneously coverage rates are bigger, than one materials flow higher hit rate arranged.
Claims (4)
1, a kind of blast furnace bell-less roof material distributing polycyclic distributing chute is characterized in that having a main discharge port and at least one additional discharge port, and cross section is formed by rectangle and by following part:
The straight bottom land (1) that has a biasing breach at discharge end at least in bottom surface, the two sides has hook (2,3) side wall (4,5), wherein the jagged breach with bottom land (1) of a side wall (5) is corresponding, three and side wall (4,5) top board of Xiang Lianing (6,7,8), three are fixed on top board (6,8) suspension ring on (9,10,11), two and side wall (5) and top board (7,8) charging guide plate of Xiang Lianing (12,13) is at bottom land (1) and side wall (4,5) and the inboard of charging guide plate (12,13) be fixed with removable abrasion-proof backing block (14).
2, it is characterized in that by the said polycyclic distributing chute of claim 1 (1) at the bottom of the chute is curved and extend the afterbody (16) of band chute (15) at feeding end, the quoin (20) that can change chute inclination angle (2) is housed in chute (15).Cushion block (20) matches with the wedge-shaped indentation (21) that distributor stretches on the interior apron shell (18) of stove.
3, also be the special-purpose loading and unloading of this chute adapted frame by said its feature of polycyclic distributing chute of claim 1, said special-purpose loading and unloading frame is made up of following part: by two longerons (22,23) and the steelframe (32) formed of other members, on steelframe (32) front end end face, be welded with two crossbeams (24,25), two one ends pass and lean out crossbeam (24), the other end inserts crossbeam (25) and integrally welded rod (26,27), a bolt (29) and a nut collar thereof that passes crossbeam (25) mider hole, one group of damper weight (28) that is mounted on the steelframe afterbody.
4, press the cloth control method of the said polycyclic distributing chute of claim 1, it is characterized in that under the fixed condition of the cloth amount weighing apparatus of unit time, utilize the difference of chute to turn to, different rotating speeds and a few batch of material are formed a cloth periodic arrangement and are combined into tens kinds of adjusting furnace charges at the radially-arranged burden distribution system of furnace throat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88101583 CN1014995B (en) | 1988-04-01 | 1988-04-01 | Multi-ring loading chute and method of controlling feed distribution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88101583 CN1014995B (en) | 1988-04-01 | 1988-04-01 | Multi-ring loading chute and method of controlling feed distribution |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1036409A true CN1036409A (en) | 1989-10-18 |
| CN1014995B CN1014995B (en) | 1991-12-04 |
Family
ID=4831814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88101583 Expired CN1014995B (en) | 1988-04-01 | 1988-04-01 | Multi-ring loading chute and method of controlling feed distribution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1014995B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089810C (en) * | 1998-03-20 | 2002-08-28 | “图腾”科技生产及贸易中心内部股份公司 | Blast furnace charging apparatus |
| CN101285108B (en) * | 2008-05-30 | 2010-06-02 | 重庆钢铁(集团)有限责任公司 | Process for charging in bell-less top of blast furnace |
| CN101845528A (en) * | 2010-06-02 | 2010-09-29 | 首钢总公司 | Multi-ring matrix burden distribution process for bell-less top of blast furnace |
| CN101857909A (en) * | 2010-06-24 | 2010-10-13 | 沈阳哈维尔表面工程技术有限公司 | Material distributing chute |
| CN102137940A (en) * | 2008-09-12 | 2011-07-27 | 保尔伍斯股份有限公司 | Shaft furnace charging device and corresponding distribution chute |
| CN102827973A (en) * | 2012-09-20 | 2012-12-19 | 石家庄华海冶金科技有限公司 | Method for adjusting and controlling initial state of blast furnace ring-shaped material distributing chute |
| CN104946838A (en) * | 2015-07-21 | 2015-09-30 | 方大特钢科技股份有限公司 | Blast furnace fan-shaped distribution method |
| CN110317914A (en) * | 2019-07-25 | 2019-10-11 | 德龙钢铁有限公司 | Blast-furnace top distributing device for steel scrap fixed point charging |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880739B (en) * | 2010-06-02 | 2012-08-01 | 首钢总公司 | Bell-less top multi-ring matrix distribution center coke charging method of blast furnace |
-
1988
- 1988-04-01 CN CN 88101583 patent/CN1014995B/en not_active Expired
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089810C (en) * | 1998-03-20 | 2002-08-28 | “图腾”科技生产及贸易中心内部股份公司 | Blast furnace charging apparatus |
| CN101285108B (en) * | 2008-05-30 | 2010-06-02 | 重庆钢铁(集团)有限责任公司 | Process for charging in bell-less top of blast furnace |
| CN102137940A (en) * | 2008-09-12 | 2011-07-27 | 保尔伍斯股份有限公司 | Shaft furnace charging device and corresponding distribution chute |
| CN102137940B (en) * | 2008-09-12 | 2013-10-30 | 保尔伍斯股份有限公司 | Shaft furnace charging device and corresponding distribution chute |
| CN101845528A (en) * | 2010-06-02 | 2010-09-29 | 首钢总公司 | Multi-ring matrix burden distribution process for bell-less top of blast furnace |
| CN101857909A (en) * | 2010-06-24 | 2010-10-13 | 沈阳哈维尔表面工程技术有限公司 | Material distributing chute |
| CN101857909B (en) * | 2010-06-24 | 2012-06-06 | 沈阳哈维尔表面工程技术有限公司 | Material distributing chute |
| CN102827973A (en) * | 2012-09-20 | 2012-12-19 | 石家庄华海冶金科技有限公司 | Method for adjusting and controlling initial state of blast furnace ring-shaped material distributing chute |
| CN104946838A (en) * | 2015-07-21 | 2015-09-30 | 方大特钢科技股份有限公司 | Blast furnace fan-shaped distribution method |
| CN110317914A (en) * | 2019-07-25 | 2019-10-11 | 德龙钢铁有限公司 | Blast-furnace top distributing device for steel scrap fixed point charging |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1014995B (en) | 1991-12-04 |
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