CN104561418B - A kind of analog blast furnace without clock and tank cloth experimental system - Google Patents
A kind of analog blast furnace without clock and tank cloth experimental system Download PDFInfo
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- CN104561418B CN104561418B CN201310503787.9A CN201310503787A CN104561418B CN 104561418 B CN104561418 B CN 104561418B CN 201310503787 A CN201310503787 A CN 201310503787A CN 104561418 B CN104561418 B CN 104561418B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/18—Bell-and-hopper arrangements
- C21B7/20—Bell-and-hopper arrangements with appliances for distributing the burden
Abstract
The present invention disclose a kind of analog blast furnace without clock and tank cloth experimental system, belong to metallurgical test studying technological domain. this system is by charging bucket system, distributing system, experimental furnace system, with reference to system of bf body, supply air system forms, this system has and actual non material bell cloth system current status height, cut-and-try work amount is little, measure and observe convenient and swift, can according to the needs of blast furnace operating, arrange at given burden distribution matrix, batch can and material combinations, when chute sense of rotation and air-supply air quantity, the burden distribution information of blast furnace radial direction and the charge level segregation situation of blast furnace circumferential direction can be reproduced, it it is the experimental system that metallurgical test room research blast furnace bell-less cloth regular is suitable for, to actual blast furnace, without clock and tank cloth has guidance effect.
Description
Technical field
The present invention relates to a kind of analog blast furnace without clock and tank cloth experimental system, belong to metallurgical test studying technological domain.
Background technology
Blast furnace without clock and tank cloth furnace roof at home large blast furnace generally uses. Method without clock cloth is versatile and flexible, and tank system device is compact, it may also be useful to efficiency advantages of higher has obtained blast furnace ironmaking circle and generally admitted. For without clock and tank system, radial bed structure distribution, and circumferential direction segregation information to carry out blast furnace operating for operator significant. But under normal blast furnace production status, blast furnace is in sealed state, operator cannot directly obtain the bed of material in blast furnace throat radial distribution, and segregation information in a circumferential direction. Can only passing through cross temperature rifle, furnace roof infrared imaging, the collateral informations such as stock rod carry out the radial adjustment with circumferential direction of blast furnace. Therefore a lot of blast furnace researchist sets up small test model and simulates under the cloth parameter of setting furnace charge in the distribution of actual blast furnace throat radial direction. But these models or do not have charging bucket system can not react the discharge behavior of furnace charge from batch can, distributing mode is simply original, only simulate the decline behavior that upper shaft can not react furnace charge entirety, there is no supply air system, body of heater is as a whole, the situation of actual blast furnace charge level distribution can not be reacted, the handiness also lacking experiment and measuring comprehensively.
Summary of the invention
Without clock and tank roof material distributing model experimental systems combines charging bucket system to it is an object of the invention to provide a kind of blast furnace, cloth system, the experiment body of heater that can separate and combine and reference system of bf body, supply air system, consider the various factors of blast furnace material distribution comprehensively, different experiments demand can be met, cut-and-try work amount is little again, measure also convenient and swift, without clock and tank furnace roof can meet the requirement of blast furnace operating personnel in the bed structure distribution of radial direction and the segregation of circumferential direction at analog blast furnace to make this mock-up, solves Problems existing in background technology.
For achieving the above object, the technical scheme of the present invention is:
A kind of analog blast furnace without clock and tank cloth experimental system, this system is by charging bucket system, cloth system, experimental furnace system, with reference to system of bf body, supply air system forms, described charging bucket system is arranged symmetrically with by two identical batch cans (1) and is fixed together, manual blow-off valve (2) and material flow gate (3) it is provided with bottom two batch cans, manual blow-off valve (2) and batch can (1) weld together, and material flow gate (3) is fixed on two-layer platform (15-1); Described cloth system is fixed on two-layer platform (15-1), by center trunnion (4), wheel casing (5) and swivel chute (6) composition, center trunnion (4) is fixed on wheel casing, and rotating machine and tilting motor on wheel casing realize rotating and fascinating by gear and transmission shaft driven rotary chute (6); Described experimental furnace system is by testing body of heater (7), air port 8, blocking material plate (9), electronic blow-off valve (10-1), stockline scale (11), pressure tap (12), two-layer platform (15-1) and one layer of platform (15-2), main sheet glass (16), auxiliary glass plate (17), auxiliary widgets (18) composition; Described reference system of bf body by with reference to body of heater (13), electronic blow-off valve (10-2), intake stack (14) form; Described supply air system is by gas source (19), reducing valve (21), manual modulation valve (20), air quantity instrument (24), air quantity topworks (22), blast instrument (23) forms, described experiment body of heater (7) is with reference to body of heater (13) relatively independent sealing, it is bolted connection, cloth can be removed with reference to body of heater (13) after terminating, experiment body of heater (7) half cross section is observed and to be measured.
Further, described main sheet glass (16) is transparent.
Further, test body of heater and it is provided with 6 pressure taps (12); Experiment lower portion of furnace body is provided with 20 air ports (8) arranged side by side.
Further, described reference body of heater (13) top is symmetrical with experiment body of heater (7).
In the charging bucket system arranged side by side of the present invention, in the process of batch can charging, manual blow-off valve cuts out, and when batch can discharge, manual blow-off valve and material flow gate stay open, and whole charging and discharging process people stand in and operate on platform. Material flow gate is spherical valve, has and automatically opens pattern with manual two kinds.
In the cloth system of the present invention, the axis of the axis of center trunnion and the axis of batch can arranged side by side and experiment body of heater overlaps. The center of center trunnion end is the rotation center of swivel chute. Rotating machine and tilting motor can experimentally need to drive chute to carry out monocycle cloth, polycyclic distributing, fixed point cloth and screw distribution four kinds of patterns.
In the experimental furnace system of the present invention, the height of main sheet glass and auxiliary glass plate shape are determined by the calculated with mathematical model knot before experiment with height. Suitable auxiliary glass plate shape can reduce the number of times of experiment, the shape of charge level after being restrained as early as possible, and namely the shape of charge level before cloth one batch of material and the shape of charge level after the complete batch of material of cloth coincide. The effect of auxiliary widgets has two: when arranged in matrix changes, and adds auxiliary widgets to change the shape of original charge level; If testing body of heater and inconsistent with reference to body of heater charge level height in blanking process, the furnace charge of side is stoped to be pulled to another side and affect the accuracy of position, center charge level. Shaft has 6 pressure taps from top to bottom, in order to measure the pressure-losses of air-flow each section of body of heater, it is possible to checking air flow method mathematical model.
Described 20 air ports arranged side by side, the size in each air port, interval is all identical, evenly blows in order to realize circumferential direction. There is a Semicircular baffle the inside for the dead stock column in analog blast furnace inside, leaves certain distance in order to discharge to simulate in actual blast furnace coke in the consumption of Tuyere Raceway between baffle plate and furnace wall.
In the supply air system of the present invention, gas source is pressurized air, and gas source connects outside network, and container is enough big, and in air-supply process, air pressure keeps stable. Installing a reducing valve on air supply duct, for being reduced by the pressure in gas source, prevent owing to gaseous tension is excessive, stock column moment is blown afloat. Installing an air quantity instrument on the intake ducting of experiment body of heater, this air quantity instrument band air quantity control system, installs a pressure instrument in addition, for measuring the pressure-losses of air-flow by the bed of material; With reference on the intake ducting of body of heater, a tensimeter and manual valve are being installed, for controlling the air-supply size with reference to body of heater.
Experimental furnace system and the reference system of bf body of the present invention are closely linked by bolt in cloth process, after cloth terminates, one layer of platform carries out the measurement of circumferential direction cloth segregation, then can move away with reference to body of heater, to observe and to measure the burden distribution situation observed with experiments of measuring body of heater radial direction, size-grade distribution situation, and air flow method situation.
Compared with prior art, the advantage of the present invention is at least: (1) combines charging bucket system, cloth system, the experiment body of heater that can separate and combine and reference system of bf body, supply air system, considers the various factors of blast furnace material distribution, with actual blast furnace material distribution situation similarity height comprehensively; (2) cloth system level of automation height, distributor handiness is big, it is possible to meet various experiment demand; (2) experiment body of heater and reference Proper Design are flexible, have both saved test materials and test furnace charge, and have reduced again test work amount; (3) distribution situation of charge level can be observed through transparency glass plate clearly, measure accurately; (4) blast furnace material distribution circumferential direction and the full and accurate experimental data of radial distribution can be obtained, for actual blast furnace operating provides a large amount of information, it is the very practical research system of metallurgical test room research blast furnace material distribution rule.
Accompanying drawing illustrates:
Fig. 1 is front view of the present invention;
Fig. 2 is side-view of the present invention;
Fig. 3 is that the present invention tests body of heater half face figure;
Fig. 4 is air port of the present invention distribution plan;
Fig. 5 is stockline scale figure of the present invention;
Fig. 6 is supply air system figure of the present invention.
1 batch can in figure, 2 manual blow-off valves, 3 material flow gates, 4 center trunnions, 5 wheel casinges, 6 swivel chutes, 7 experiment bodies of heater, 8 air ports, 9 blocking material plates, electronic blow-off valve in 10-1 experimental furnace system, the electronic blow-off valve in 10-2 reference system of bf body, 11 stockline scales, 12 pressure taps, 13 reference bodies of heater, 14 intake stack, 15-1 two-layer platform, 15-2 mono-layer of platform, 16 main sheet glass, 17 auxiliary glass plates, 18 auxiliary widgets, 19 gas sources, 20 manual modulation valves, 21 reducing valve, 22 air quantity topworkies, 24 air quantity instrument, 23 blast instrument.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further details.
Obtain blast furnace material distribution circumferential direction and radially-arranged full and accurate experimental data, for actual blast furnace operating provides a large amount of information
A kind of analog blast furnace without clock and tank cloth experimental system, by charging bucket system, cloth system, experimental furnace system, with reference to system of bf body, supply air system forms. Described charging bucket system is arranged symmetrically with by two identical batch cans 1 and is fixed together, and respectively has one to manual blow-off valve 2 and to material flow gate 3 bottom two batch cans; Described distributing system is made up of center trunnion 4, wheel casing 5 and swivel chute 6; Described experimental furnace system by testing body of heater 7, blocking material plate 9, electronic blow-off valve 10-1, pressure tap 12, air port 8, main sheet glass 16, auxiliary glass plate 17, auxiliary widgets 18, stockline scale 11 forms; Described reference system of bf body by with reference to body of heater 13, electronic blow-off valve 10-2, intake stack 14 forms; Described supply air system is by gas source 19, and manual modulation valve 20, reducing valve 21, air quantity topworks 22, air quantity instrument 24, blast instrument 23 forms.
Implement mode more specifically:
Charging bucket system is by actual blast furnace bucket, keeps same shape, size, has reduced according to a certain percentage. Two batch cans 1 are welded together to form a unit with manual blow-off valve 2 below respectively, are fixed by girder steel between two unit. Manual blow-off valve is made up of valve body and valve plate, and valve body and batch can weld together, and valve body is a circular steel plate, and steel plate connects one handle, realizes the opening and closing of push-pull valve by rotating handle. When feeding, people stands in and is rotated counterclockwise handle on two-layer platform 15-1 so that push-pull valve cuts out and blocks bottom batch can, and turn clockwise handle when discharge so that is in the state of opening bottom batch can. Material flow gate 3 is fixed together by bolt and two-layer platform 15-1. It has two kinds of operating mode: automatic mode and manual pattern, and material flow gate is driven by PLC in automatic mode, opening speed 15 ��/s, and the signal of material valve action is transferred to distributor simultaneously; In a manual mode, the signal of material valve action is not transferred to distributor.
Distributing system is made up of center trunnion 4, wheel casing 5 and swivel chute 6, and center trunnion and swivel chute are connected by nut and wheel casing two, and wheel casing is fixed together by bolt and two-layer platform 15-1. Rotating machine and tilting motor is driven by PLC, gear, transmission rod driven rotary chute 6 realizes rotating and fascinating, can experimentally need to realize monocycle cloth, polycyclic distributing, screw distribution and polycyclic distributing, and fixed point cloth, chute speed of rotation and the speed of fascinating can experimentally need to set. Angle of rotation and turning angle precision are within the scope of 0.1 ��.
In experimental furnace system, the demarcation of stockline scale 11 is in order to the control of stockline during cloth, and the interval range controlled according to actual blast furnace operating is from 0m to 2m. In order to reduce the number of times of experiment, shape of charge level after being restrained as early as possible, namely the shape of charge level before cloth and the shape of charge level after the complete batch of material of cloth coincide, before experiment starts, go out the shape of charge level under current burden distribution matrix is arranged by calculated with mathematical model, then go out corresponding auxiliary glass plate 17 by laser cutting. The work of auxiliary widgets 18 has two: when arranged in matrix changes, and adds auxiliary widgets to change the shape of original charge level; If testing body of heater and inconsistent with reference to body of heater charge level height in blanking process, the furnace charge of side is stoped to be pulled to another side and affect the accuracy of position, center charge level. When burden distribution matrix shaft has 6 pressure taps from top to bottom, in order to measure the pressure-losses of air-flow each section of body of heater, it is possible to checking air flow method mathematical model. Each pressure tap realizes closing and opening by knob, keeps under normal circumstances closing, and when only needing to measure, opens pressure tap 12, measures with loadometer. Blocking material plate 9 acts on to accept furnace charge, form dead stock column, the height of slag iron liquid level in cupola well when it is highly set as actual blast furnace operating, distance between blocking material plate and furnace wall ensures that furnace charge declines smoothly, simulating the consumption of actual blast-furnace coke at raceway zone, the distance between blocking material plate and furnace wall is the 23% of cupola well radius. Experiment body of heater 7 circumferential direction is uniformly distributed 20 air ports, it is ensured that circumferential direction is evenly blown, and with reference to a body of heater 13 side only logical intake stack 14, to regulate air-supply size, enables experiment body of heater with reference body of heater simultaneously with identical speed blanking. Electronic blow-off valve 10-1 and 10-2 of experiment body of heater and reference lower portion of furnace body is by control panel control, size of current can be regulated on the control panel to control discharge velocity, in order to make experiment body of heater and stablize blanking with reference to body of heater simultaneously, it is achieved need to be applicable to experiment body of heater and the size of current with reference to body of heater.
In supply air system, gas source 19 is pressurized air, and gas source connects outside network, and container is enough big, and in air-supply process, air pressure keeps stable. Installing a reducing valve 21 on air supply duct, for being reduced by the pressure in gas source, prevent owing to gaseous tension is excessive, stock column moment is blown afloat. Installing an air quantity instrument 24 on the intake ducting of experiment body of heater, this air quantity Yi Dai air quantity topworks 22, installs a blast instrument 23, in addition for measuring the pressure-losses of air-flow by the bed of material; With reference on the intake ducting of body of heater, a blast instrument 23 and manual modulation valve 20 are being installed, for controlling the air-supply size with reference to body of heater.
Experimental furnace system and the reference system of bf body of the present invention are closely linked by bolt in cloth process, after cloth terminates, one layer of platform 15-2 carries out the measurement of circumferential direction cloth segregation, then can move away with reference to body of heater, to observe and the burden distribution situation of experiments of measuring body of heater radial direction, size-grade distribution situation, and air flow method situation.
Claims (4)
1. an analog blast furnace without clock and tank cloth experimental system, it is characterized in that, this system is by charging bucket system, cloth system, experimental furnace system, with reference to system of bf body, supply air system forms, described charging bucket system is arranged symmetrically with by two identical batch cans (1) and is fixed together, manual blow-off valve (2) and material flow gate (3) it is provided with bottom two batch cans, manual blow-off valve (2) and batch can (1) weld together, and material flow gate (3) is fixed on two-layer platform (15-1); Described cloth system is fixed on two-layer platform (15-1), by center trunnion (4), wheel casing (5) and swivel chute (6) composition, center trunnion (4) is fixed on wheel casing, and rotating machine and tilting motor on wheel casing realize rotating and fascinating by gear and transmission shaft driven rotary chute (6); Described experimental furnace system is by testing body of heater (7), air port 8, blocking material plate (9), electronic blow-off valve (10-1), stockline scale (11), pressure tap (12), two-layer platform (15-1) and one layer of platform (15-2), main sheet glass (16), auxiliary glass plate (17), auxiliary widgets (18) composition; Described reference system of bf body by with reference to body of heater (13), electronic blow-off valve (10-2), intake stack (14) form; Described supply air system is by gas source (19), reducing valve (21), manual modulation valve (20), air quantity instrument (24), air quantity topworks (22), blast instrument (23) forms, described experiment body of heater (7) is with reference to body of heater (13) relatively independent sealing, it is bolted connection, cloth can be removed with reference to body of heater (13) after terminating, experiment body of heater (7) half cross section is observed and to be measured.
2. a kind of analog blast furnace according to claim 1 without clock and tank cloth experimental system, it is characterised in that, described main sheet glass (16) is transparent.
3. a kind of analog blast furnace according to claim 1 without clock and tank cloth experimental system, it is characterised in that, experiment body of heater is provided with 6 pressure taps (12); Experiment lower portion of furnace body is provided with equally distributed 20 air ports (8) side by side.
4. a kind of analog blast furnace according to claim book 1 without clock and tank cloth experimental system, it is characterised in that, described reference body of heater (13) top is symmetrical with experiment body of heater (7).
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| CN104561418B true CN104561418B (en) | 2016-06-01 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105136623A (en) * | 2015-09-17 | 2015-12-09 | 重庆大学 | Potential energy change based method for quantitatively characterizing packing segregation state of particles after falling |
| CN106086258A (en) * | 2016-08-24 | 2016-11-09 | 山东钢铁股份有限公司 | A kind of analog blast furnace air blast cloth experimental provision and experimental technique |
| CN106929619B (en) * | 2017-03-09 | 2019-03-29 | 江苏省沙钢钢铁研究院有限公司 | A kind of distributing method improving blast furnace circumferencial direction work uniformity |
| CN107034327A (en) * | 2017-05-09 | 2017-08-11 | 重庆大学 | Method based on segregation status during mesh generation quantitatively characterizing particles fall |
| CN109487027A (en) * | 2018-12-21 | 2019-03-19 | 北京科技大学 | A kind of apparatus for distributing optimized and furnace charge is classified in pot type bell-less furnace top blast furnace |
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| JPH04183808A (en) * | 1990-11-20 | 1992-06-30 | Kawasaki Steel Corp | Method for changing coke in bell-less blast furnace |
| CN201148441Y (en) * | 2007-12-30 | 2008-11-12 | 重庆大学 | Blast furnace chute cloth regular experimental device |
| CN202011885U (en) * | 2011-01-01 | 2011-10-19 | 河北钢铁股份有限公司邯郸分公司 | Blast furnace bell-less top material distribution simulation system |
| CN103194555A (en) * | 2013-04-12 | 2013-07-10 | 北京首钢国际工程技术有限公司 | System for researching material distribution rule of furnace top equipment |
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2013
- 2013-10-23 CN CN201310503787.9A patent/CN104561418B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04183808A (en) * | 1990-11-20 | 1992-06-30 | Kawasaki Steel Corp | Method for changing coke in bell-less blast furnace |
| CN201148441Y (en) * | 2007-12-30 | 2008-11-12 | 重庆大学 | Blast furnace chute cloth regular experimental device |
| CN202011885U (en) * | 2011-01-01 | 2011-10-19 | 河北钢铁股份有限公司邯郸分公司 | Blast furnace bell-less top material distribution simulation system |
| CN103194555A (en) * | 2013-04-12 | 2013-07-10 | 北京首钢国际工程技术有限公司 | System for researching material distribution rule of furnace top equipment |
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