CN104807328A - Method and equipment for bedding material layered material arrangement of sintering machine by using vibrating screen - Google Patents
Method and equipment for bedding material layered material arrangement of sintering machine by using vibrating screen Download PDFInfo
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- CN104807328A CN104807328A CN201510255504.2A CN201510255504A CN104807328A CN 104807328 A CN104807328 A CN 104807328A CN 201510255504 A CN201510255504 A CN 201510255504A CN 104807328 A CN104807328 A CN 104807328A
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Abstract
The invention provides a method and equipment for bedding material layered material arrangement of a sintering machine by using a vibrating screen. The vibrating screen is arranged between a bedding material hopper and a sintering machine trolley, the vibrating screen can be mounted in a suspension mode through a hanging damper spring or a hanger, and sitting mounting can also be realized through a spring upper support, a sitting damper spring and a spring lower support; a material receiving plate and rod type cantilever screen meshes are mounted on the vibrating screen, the rod type cantilever screen meshes are arranged in the vibrating screen in a stepped mode, and holes in each layer can be different or can also be the same. By using the equipment, the layered material arrangement of bedding materials of the sintering machine can be realized, particles greater than gaps between grid sections of the sintering machine trolley are firstly paved on the lower layer, and then particles equal to or smaller than the gaps between the grid sections of the sintering machine trolley are paved on the upper layer, so that smaller particles can be utilized as the bedding materials of the sintering machine, and greater particles can be remained for a blast furnace, therefore, the economic and technical indexes of the blast furnace are improved, the blockage of the gaps in the sintering machine trolley and the leakage of materials under the trolley are avoided, and the production efficiency and economic benefit of the sintering machine are improved.
Description
Technical field
The present invention relates to the grate-layer material of blast furnace ironmaking raw material system of processing sintering machine, mainly a kind of vibratory sieve is to the method for sintering machine grate-layer material layer-by-layer distribution and equipment.
Background technology
Using the iron and steel enterprise of blast fumance molten iron, because blast furnace uses native iron ore normally to smelt completely, therefore, the feed stock for blast furnace great majority that modern blast furnace uses all are through " grog " of roasting." grog " that current blast furnace uses mainly contains two kinds, and one is sintering deposit, and one is pellet, and wherein sintering deposit proportion is generally 70% ~ 80%, and these sintering deposits need to utilize sintering machine to produce.
Its main part of sintering machine is briefly an endless-chain be made up of several chassis, supporting corresponding process equipment again, as feeding system, cloth system, upper grate-layer material system, ignition system, exhausting system, finished product fragmentation and output system, also has the environmental protection equipment such as dedusting, desulfurization in addition.Sintering deposit production technology is, by the form of small iron particles ore of many mineral again with addition of a certain proportion of solid fuel (claiming compound in the industry), completely be taped against on sintering pallet according to certain thickness, then light a fire on the bed of material, exhausting below chassis, after the solid fuel of bed of material upper surface is lighted, the whole bed of material is made to be grilled thoroughly gradually take out wind action below chassis under, make the form of small iron particles ore in the bed of material at high operating temperatures physical and chemical reaction occur, make form of small iron particles ore be sintered into large agglomerate---sintering deposit.
Produce sintering deposit due to sintering machine to face down burning from the bed of material, owing to needing exhausting below sintering pallet, this just requires that namely sintering pallet will breathe freely and carries mineral aggregate again, therefore, sintering pallet is by arranging not only the mode of fire grate minor grid section makes it to breathe freely but also carry mineral aggregate, due to the sintering deposit bed of material be burned to bottom time, grid section is inevitably made to touch high temperature, in the course of time grid section will be caused to burn out, also easily cause Sinter grid section, bonding chassis, so sintering machine continuous seepage will be had a strong impact on, affect the production efficiency of sintering machine, cause grid section spare parts consumption amount large, producing cost is high, the final economic benefit affecting sintering machine.For this problem, from last century the nineties from the beginning of, start on sintering pallet, completely spread one deck finished product sintering deposit, according to this as grate-layer material, to isolate sintering deposit roasting heat to grid section transmission, solve the problem of Sinter grid section bonding chassis.
All on sintering machine on the producer of grate-layer material, gap (also can claim hole) on its sintering pallet between grid section and grid section is general all at 5mm ~ 6mm, for anti-leak-stopping material and blocking bogie grates hole, the grade being equal to or less than bogie grates hole all cannot be used as grate-layer material, the finished product sintering deposit of the even larger grade of 10mm ~ 20mm being far longer than grid section hole can only be selected as grate-layer material, due to 10mm in finished product sintering deposit ~ more than 20mm grade is that blast furnace aspect is preferred to use, when this grade is drawn out of after as grate-layer material, be sent to the little grade increasing proportion of 5mm ~ 10mm in the finished product sintering deposit of blast furnace, all know in the industry when in blast furnace feeding raw material, the little grade of 5mm ~ 10mm is too much, in State of Blast Furnace, gas permeability can be deteriorated, smooth operation of furnace can be affected, and then BF Technology in Bao Steel index can be affected, affect blast furnace economic benefit.
As sintering system itself, use the finished product sintering deposit of 10mm ~ 20mm even larger grade as sintering machine grate-layer material and uneconomical, except needing to arrange a set of heavy-duty shocks sieve and dust pelletizing system thereof at screening station more, increase outside operating cost, because selected particle diameter is larger, between its particle and particle, hole is larger, for preventing sintering form of small iron particles ore (claiming " compound " in the industry) to leaking material or blocking bogie grates hole below, need, by the grate-layer material bed of material is thickeied blocks drain material, to have impact on so again sintering machine production efficiency.
For the deficiency of prior art, the invention provides a kind of vibratory sieve to the method for sintering machine grate-layer material layer-by-layer distribution and equipment, the method and equipment can not change existing sintering machine bogie grates hole, only distribution device original between sintering pallet with grate-layer material hopper is removed and change the outfit into vibratory sieve, just can 10mm or close to the first spreading of 10mm grade below, form a separation layer, then 5mm or be less than above 5mm grade repaves and be sprinkling upon, thus realize grate-layer material layer-by-layer distribution, this makes it possible to make full use of blast furnace aspect does not like the little grade of 5mm ~ 10mm used as grate-layer material, thus displace the 10mm ~ 20mm grade sintering deposit liking using in blast furnace aspect.Owing to employing little grade as grate-layer material, between its particle and particle, hole is little, just can more effectively avoid compound small particles to leaking material below.
The application number of publicity is in a kind of " sintering machine double berth bed material method " of 201310598184.1, " before sintering machine spreads compound grate-layer material on sintering machine upper berth " namely above the exploitation of described the early 1990s in last century on sintering pallet, completely spread one deck finished product sintering deposit as grate-layer material technology, this technology has been the known technology generally applied in the industry, in fact the innovative point of 201310598184.1 patents is, sintering machine grate-layer material is divided in order to two-layer, and indicate the large grate-layer material of ground floor to be obtained by screening by sintering deposit finished product screen office, the little grate-layer material of the second layer is by (being local " soil claims " under blast furnace ditch, in fact in the industry more common appellation is " below blast furnace hopper ") screening gained of returning mine.The fundamental difference of the present invention and above-mentioned patent is: when existing sintering deposit finished product sieves dying grain system and grate-layer material hopper is substantially constant, between sintering pallet and grate-layer material hopper, vibratory sieve is installed, and be that layering is carried out in sintering machine grate-layer material by vibratory sieve, if select the screen cloth that each layer hole is identical, grate-layer material can be divided into two-layer (namely above screen cloth as one deck, through screen cloth drain to below as one deck), if select the screen cloth that each layer hole is different, grate-layer material can be divided into multilayer (namely above screen cloth as orlop, then often reduce with screen cloth hole and once namely can lay one deck, until smallest particles is laid on the superiors), therefore, what emphasis of the present invention embodied is that a kind of vibratory sieve is to the method for sintering machine grate-layer material layer-by-layer distribution and equipment (vibratory sieve mounting means and Structure of Vibrating Screen), the patent being 201310598184.1 with application number is essentially different.
Another publication number is the patent of CN1635167A is " the whole grain technique of sintering deposit less breakage granule little segregation grate-layer material ", grate-layer material layering is not mentioned inside document, vibratory sieve is not more used to be the content of its layering, therefore, with the present invention without any correlation.
Summary of the invention
Object of the present invention and technical assignment are, there is provided a kind of vibratory sieve to the method for sintering machine grate-layer material layer-by-layer distribution and equipment, the method and equipment is utilized to carry out layer-by-layer distribution to sintering machine grate-layer material, existing sintering deposit finished product screening dying grain system is screened, use is not liked in blast furnace aspect, and 5mm ~ 10mm grade that sintering machine grate-layer material in the past cannot use is as grate-layer material, blast furnace aspect is liked using 10mm ~ 20mm's leave blast furnace for, be beneficial to improve sintering system and blast furnace system economic benefit.
The present invention solves the problems of the technologies described above adopted technical scheme: it has vibratory sieve between grate-layer material hopper and sintering pallet, and vibratory sieve is placed in the below of grate-layer material hopper, the top of sintering pallet; There are splicing plate, Bar strip type Cantilevered screen and vibrator on the vibrating; Vibrator and vibratory sieve are connected and fixed, and have feed opening in the bottom of grate-layer material hopper, and grate-layer material hopper is fixed on superstructure component, and upper end and the superstructure component of suspension type shock-absorbing spring and suspender member are connected and fixed, and lower end and vibratory sieve are connected and fixed; Sintering pallet having chassis wheel, have chassis walking track girder below chassis wheel, is substrustion component below chassis walking track girder.
Described vibratory sieve can also be installed by sitting posture, and it is arranged on platform beams by upper bracket of the spring, sitting posture shock-absorbing spring and spring lower support, and platform beams is supported by platform legs, and the lower end of platform legs is fixed on substrustion component; Upper bracket of the spring and vibratory sieve are connected and fixed.
The incline direction of described vibratory sieve is consistent with flow direction during grate-layer material blanking, and the installation direction of vibratory sieve is contrary with the traffic direction of sintering pallet.
The splicing plate of described vibratory sieve is below grate-layer material hopper feed opening.
The incline direction of described splicing plate can be identical with the incline direction of Bar strip type Cantilevered screen, also can be anti-phase with the incline direction of Bar strip type Cantilevered screen.
Described Bar strip type Cantilevered screen is in the below of splicing front edge of board.
Described Bar strip type Cantilevered screen is stagger in vibratory sieve, and can arrange 2 ~ 10 layers.
The hole of described its each layer of Bar strip type Cantilevered screen can difference also can be identical, the hole come above when hole is different is little, and the hole come below is large.
By the 8mm ~ 10mm grade bed of material shown in accompanying drawing described in embodiment 1,2 on sintering pallet, 5mm ~ 7mm grade bed of material is on 8mm ~ 10mm grade bed of material.
A kind of vibratory sieve of the present invention, to the method for sintering machine grate-layer material layer-by-layer distribution and equipment, compared with prior art, has following outstanding advantage and beneficial effect:
Outstanding advantages and the feature of the method and equipment are, it is provided with vibratory sieve between sintering pallet and grate-layer material hopper, grate-layer material must by after vibratory sieve could equably spreading on sintering pallet, existing sintering deposit finished product screening dying grain system can be made full use of by this vibratory sieve to screen, blast furnace aspect does not like the 5mm ~ 10mm grade sintering deposit used as grate-layer material, the first spreading of the even 9mm ~ 10mm of 8mm ~ 10mm can be selected in bottom in 5mm ~ 10mm grade, form a separation layer, then remaining 5mm ~ 7mm or 5mm ~ 8mm is re-used as one deck, the screen cloth of different aperture can also be adopted, remaining 5mm ~ 7 or 5mm ~ 8mm are further divided into two-layer even multilayer, spreading the most minimum is topmost, realize layer-by-layer distribution according to this, that blast furnace aspect is liked the 10mm ~ 20mm used leaves blast furnace for.In addition, can be formed by vibratory sieve layer-by-layer distribution and isolate layer by layer, therefore, the passage of the granule " descending " in compound (namely adding the compound of certain solid fuel composition for the form of small iron particles ore of sintering for agglumeration) can be blocked, avoid granule to block sintering machine bogie grates hole and leak material below chassis, be conducive to sintering machine and reduce production cost, enhance productivity.
The method and equipment is adopted to also have a lot of beneficial effect except above-mentioned outstanding advantages and feature, one is to simplify finished product sintering deposit screening dying grain system process structure, save a set of heavy-duty shocks sieve and dust pelletizing system supporting with it, be conducive to reducing production run cost and saving energy and reduce the cost; Two is by realizing layer-by-layer distribution, can also improve sintering machine bed permeability, be conducive to sintering machine decline consume; Three is that granule owing to being equal to or less than sintering machine bogie grates hole grade can by spreading the top at the grate-layer material bed of material, therefore, it is possible to fully contact with needing the sintering deposit raw material of roasting, the waste heat of sintering process can be utilized, the granule on grate-layer material upper strata and sintering deposit raw material are bondd again, again agglomeration, the residual heat and energy of sintering deposit production process is fully used, is conducive to improving sintering deposit yield rate.
In a word, adopt a kind of vibratory sieve of the present invention to the method for sintering machine grate-layer material layer-by-layer distribution and equipment, can not only the little grade of Appropriate application 5mm ~ 10mm, reduce the little grade ratio of 5mm ~ 10mm in blast furnace feeding raw material, be conducive to the gas permeability improved in blast furnace, be conducive to conditions of blast furnace direct motion and improve BF Technology in Bao Steel index, but also optimizing further and cost declining space for sintering system leaves.
Accompanying drawing explanation
Accompanying drawing 1 is the basic structure schematic diagram of a kind of way of realization of the method for the invention and equipment;
Accompanying drawing 2 is the method for the invention and the basic structure schematic diagram equipping another kind of way of realization;
Accompanying drawing 3 is Bar strip type Therefore cantilever rod deck vibrating local of the present invention and the asynchronous schematic diagram of each layer hole.
Accompanying drawing 4 be Bar strip type Therefore cantilever rod deck vibrating local of the present invention and each layer hole identical time schematic diagram.
Description of reference numerals: in figure 1, grate-layer material hopper, 2, vibratory sieve, 3, sintering pallet, 4, feed opening, 5, splicing plate, 6, Bar strip type Cantilevered screen, 7, superstructure component, 8, suspension type shock-absorbing spring and suspender member, 9, chassis wheel, 10, chassis walking track girder, 11, substrustion component, 12, vibrator, 13, upper bracket of the spring, 14, sitting posture shock-absorbing spring, 15, spring lower support, 16, platform beams, 17, platform legs, 18, 8mm ~ 10mm grade bed of material (described in embodiment), 19, 5mm ~ 7mm grade bed of material (described in embodiment), →, sintering pallet traffic direction,
stream flow direction above screen cloth.
Detailed description of the invention
With reference to description and accompanying drawing thereof, to the specific embodiment of the method for sintering machine grate-layer material layer-by-layer distribution and equipment, following explaining is done to a kind of vibratory sieve of the present invention.
A kind of vibratory sieve of the present invention is to the method for sintering machine grate-layer material layer-by-layer distribution and equipment.
Embodiment one: have vibratory sieve (2) between grate-layer material hopper (1) and sintering pallet (3), vibratory sieve (2) is placed in the below of grate-layer material hopper (1), the top of sintering pallet (3), vibratory sieve (2) has splicing plate (5), Bar strip type Cantilevered screen (6) and vibrator (12), vibrator (12) and vibratory sieve (2) are connected and fixed, feed opening (4) is had in the bottom of grate-layer material hopper (1), grate-layer material hopper (1) is fixed on superstructure component (7), upper end and the superstructure component (7) of suspension type shock-absorbing spring and suspender member (8) are connected and fixed, lower end and vibratory sieve (2) are connected and fixed, sintering pallet (3) there is chassis wheel (9), chassis wheel (9) has chassis walking track girder (10) below, on substrustion component (11) fixing below chassis walking track girder (10).
Embodiment two: have vibratory sieve (2) between grate-layer material hopper (1) and sintering pallet (3), described vibratory sieve (2) sitting posture is arranged on the top of the below of grate-layer material hopper (1), sintering pallet (3); It is arranged on platform beams (16) by upper bracket of the spring (13), sitting posture shock-absorbing spring (14) and spring lower support (15), platform beams (16) is supported by platform legs (17), and the lower end of platform legs (17) is fixed on substrustion component (11); Upper bracket of the spring (13) and vibratory sieve (2) are connected and fixed.
The incline direction of described Bar strip type Cantilevered screen (6) (all has as water to the characteristic that lower flows because of all loose unpacked materials with stream flows above screen cloth, therefore, Bar strip type Cantilevered screen (6) is downward-sloping installation in vibratory sieve, i.e. accompanying drawing 1, the incline direction of vibratory sieve shown in 2 is consistent with the incline direction of Bar strip type Cantilevered screen (6), namely being all that feeding end height discharge end is low) direction is consistent, the installation direction of vibratory sieve (2) (refers to that vibratory sieve discharge end is front, the posterior direction of feeding end, accompanying drawing 1, shown in 2) contrary with the traffic direction of sintering pallet (3).
The splicing plate (5) of described vibratory sieve (2) is below grate-layer material hopper (1) feed opening (4).
The incline direction of described splicing plate (5) can be identical with the incline direction of Bar strip type Cantilevered screen (6), also can be anti-phase with the incline direction of Bar strip type Cantilevered screen (6).
Described Bar strip type Cantilevered screen (6) is in the below (characteristics design flowed downward according to loose unpacked material) of splicing plate (5) front end.
Described Bar strip type Cantilevered screen (6) is stagger (characteristics design flowed downward according to loose unpacked material) in vibratory sieve (2), and can arrange 2 ~ 10 layers.
The hole of described Bar strip type Cantilevered screen (6) its each layer can difference also can be identical, the hole that hole comes above time different is little, coming hole below, large (the present embodiment is according to shown in accompanying drawing 1,2,5mm ~ 10mm grade that the blast furnace aspect screened to make full use of existing screening system is not liked is for basic point, grate-layer material is divided into two-layer, namely above screen cloth as one deck, grade is 8mm ~ 10mm, first spreading below, through screen cloth fall as one deck, grade is 5mm ~ 7mm, repaves above being sprinkling upon; Except accompanying drawing 1,2 shownschematically except, according to shown in accompanying drawing 3, the screen cloth of different aperture can also be adopted, by the first spreading above screen cloth in bottom, then according to screen cloth hole is descending, grate-layer material is divided into multilayer, finally by the spreading of minimum grade topmost).
Shown in accompanying drawing 1,2, described 8mm ~ 10mm grade bed of material (18) is on sintering pallet (3), and the 5mm ~ 7mm grade bed of material particle bed of material (19) is on 8mm ~ 10mm grade bed of material (18).
Known by above-mentioned specific embodiment; no matter adopt which type of vibratory sieve; also which type of screen cloth no matter is adopted; as long as be provided with vibratory sieve between grate-layer material hopper and sintering pallet; as long as grate-layer material be by after vibratory sieve by spreading on sintering pallet; and layer-by-layer distribution can be realized, all belong to this patent protection domain.Certainly; above-mentioned explanation is not limitation of the present invention; the present invention is also not limited in above-mentioned citing, the change that all those skilled in the art make in essential scope of the present invention, remodeling, interpolation or replacement, also should belong to protection scope of the present invention.
Except the technical characteristic described in description, be the known technology of those skilled in the art.
Claims (8)
1. one kind with vibratory sieve to the method for sintering machine grate-layer material layer-by-layer distribution and equipment, it is characterized in that: it has vibratory sieve (2) between grate-layer material hopper (1) and sintering pallet (3), vibratory sieve (2) is placed in the below of grate-layer material hopper (1), the top of sintering pallet (3), vibratory sieve (2) has splicing plate (5), Bar strip type Cantilevered screen (6) and vibrator (12), vibrator (12) and vibratory sieve (2) are connected and fixed, feed opening (4) is had in the bottom of grate-layer material hopper (1), grate-layer material hopper (1) is fixed on superstructure component (7), upper end and the superstructure component (7) of suspension type shock-absorbing spring and suspender member (8) are connected and fixed, lower end and vibratory sieve (2) are connected and fixed, sintering pallet (3) there is chassis wheel (9), chassis wheel (9) has chassis walking track girder (10) below, substrustion component (11) below chassis walking track girder (10).
2. a kind of vibratory sieve according to claim 1 is to the method for sintering machine grate-layer material layer-by-layer distribution and equipment, it is characterized in that: described vibratory sieve (2) can also be installed by sitting posture, it is arranged on platform beams (16) by upper bracket of the spring (13), sitting posture shock-absorbing spring (14) and spring lower support (15), platform beams (16) is supported by platform legs (17), and the lower end of platform legs (17) is fixed on substrustion component (11); Upper bracket of the spring (13) and vibratory sieve (2) are connected and fixed.
3. a kind of vibratory sieve according to claim 1 is to the method for sintering machine grate-layer material layer-by-layer distribution and equipment, it is characterized in that: the incline direction of described Bar strip type Cantilevered screen (6) is consistent with stream flow direction above screen cloth, the installation direction of vibratory sieve (2) is contrary with the traffic direction of sintering pallet (3).
4. a kind of vibratory sieve according to claim 1 is to the method for sintering machine grate-layer material layer-by-layer distribution and equipment, it is characterized in that: the splicing plate (5) of described vibratory sieve (2) is below grate-layer material hopper (1) feed opening (4).
5. a kind of vibratory sieve according to claim 1 is to the method for sintering machine grate-layer material layer-by-layer distribution and equipment, it is characterized in that: the incline direction of described splicing plate (5) can be identical with the incline direction of Bar strip type Cantilevered screen (6), also can be anti-phase with the incline direction of Bar strip type Cantilevered screen (6).
6. a kind of vibratory sieve according to claim 1 is to the method for sintering machine grate-layer material layer-by-layer distribution and equipment, it is characterized in that: described Bar strip type Cantilevered screen (6) is in the below of splicing plate (5) front end.
7. a kind of vibratory sieve according to claim 1 is to the method for sintering machine grate-layer material layer-by-layer distribution and equipment, it is characterized in that: described Bar strip type Cantilevered screen (6) is stagger in vibratory sieve (2), and can arrange 2 ~ 10 layers.
8. a kind of vibratory sieve according to claim 1 is to the method for sintering machine grate-layer material layer-by-layer distribution and equipment, it is characterized in that: the hole of described Bar strip type Cantilevered screen (6) its each layer can difference also can be identical, the hole that hole comes above time different is little, and the hole come below is large.
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| CN108253797A (en) * | 2018-03-28 | 2018-07-06 | 柳州钢铁股份有限公司 | Pallet grate-layer material grading distributing device and method |
| CN108287534A (en) * | 2018-03-16 | 2018-07-17 | 马鞍山钢铁股份有限公司 | A kind of sintering process gas permeability partitive optimization method |
| CN108588407A (en) * | 2018-06-19 | 2018-09-28 | 德龙钢铁有限公司 | A kind of method and cloth ball device improving permeability of sintering material bed |
| CN108955259A (en) * | 2018-09-25 | 2018-12-07 | 陈伟 | Sintering machine grate-layer material device |
| CN110006252A (en) * | 2019-04-11 | 2019-07-12 | 中冶长天国际工程有限责任公司 | A kind of radial uniform thickness uniform distribution device of ring type roasting |
| CN114485179A (en) * | 2022-02-18 | 2022-05-13 | 广东韶钢松山股份有限公司 | Layered material distribution device and sintering machine |
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| CN108253797A (en) * | 2018-03-28 | 2018-07-06 | 柳州钢铁股份有限公司 | Pallet grate-layer material grading distributing device and method |
| CN108588407A (en) * | 2018-06-19 | 2018-09-28 | 德龙钢铁有限公司 | A kind of method and cloth ball device improving permeability of sintering material bed |
| CN108588407B (en) * | 2018-06-19 | 2019-09-24 | 德龙钢铁有限公司 | A kind of method and cloth ball device improving permeability of sintering material bed |
| CN108955259A (en) * | 2018-09-25 | 2018-12-07 | 陈伟 | Sintering machine grate-layer material device |
| CN110006252A (en) * | 2019-04-11 | 2019-07-12 | 中冶长天国际工程有限责任公司 | A kind of radial uniform thickness uniform distribution device of ring type roasting |
| CN114485179A (en) * | 2022-02-18 | 2022-05-13 | 广东韶钢松山股份有限公司 | Layered material distribution device and sintering machine |
| CN114485179B (en) * | 2022-02-18 | 2024-02-06 | 广东韶钢松山股份有限公司 | Layering distributing device and sintering machine |
| CN115351894A (en) * | 2022-09-07 | 2022-11-18 | 佛山市蓝之鲸科技有限公司 | One-step distributing device for solid ceramic powder |
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