CN102978313A - Sinter feeding system and method for improving burden distribution of blast furnace - Google Patents
Sinter feeding system and method for improving burden distribution of blast furnace Download PDFInfo
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- CN102978313A CN102978313A CN2012105691755A CN201210569175A CN102978313A CN 102978313 A CN102978313 A CN 102978313A CN 2012105691755 A CN2012105691755 A CN 2012105691755A CN 201210569175 A CN201210569175 A CN 201210569175A CN 102978313 A CN102978313 A CN 102978313A
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Abstract
The invention relates to a sinter feeding system and method for improving burden distribution of a blast furnace. The feeding system is characterized in that a three-level sieving machine is arranged between a sinter conveying rubber belt and finished sinter grooves; a feeding hole and four discharge holes are arranged on the three-level sieving machine; and the finished sinter grooves are two storage grooves in big and small particle sizes. The sinters in big and small particle sizes are fed to the blast furnace alternately and orderly by adopting the system. The feeding system and the feeding method have the advantages that the sinters are divided into big and small particle sizes and are fed to the blast furnace alternately and orderly, thus changing the original charging structure of the blast furnace, not only effectively controlling segregation of the charging process and improving the air permeability of the material layer but also enabling burden distribution at the furnace top to be regulated more flexibly and creating favourable conditions for stable and smooth operation of the blast furnace.
Description
Technical field
The present invention relates to a kind of raw mineral materials agglomerate feed technique, especially a kind of agglomerate feeding system and feeding method that improves blast furnace material distribution.
Background technology
In blast-furnace smelting is produced, agglomerate accounts for furnace charge ratio about about～85%, granularity is at 5～150mm, therefore the granularity of agglomerate and distribution determine the ventilation property of the bed of material in the blast furnace chamber, wherein〉the major end item grade agglomerate of 20mm partly accounts for finished product agglomerate～52%, the little finished product grade of 5～20mm partly accounts for finished product agglomerate～48%, when conventional raw mineral materials agglomerate is carried, be that the 5-150mm grade mixes and together sends into blast furnace by same conveyor drive with big or small finished product agglomerate, agglomerate becomes " w " shape cloth after sending into blast furnace, because the segregation effect of granularity, large grade agglomerate (〉=50mm) be enriched in blast furnace walls, because the furnace wall is relatively level and smooth, the agglomerate granularity does not wait and forms material break joint crack, and the agglomerate of little grade is gathered in bed of material middle part, cause bed of material density large, force the hot blast major part that is blown into by the blast furnace bottom from bed of material edge, pass through in large grade agglomerate along the furnace wall, form " edge " effect, namely the large grade agglomerate of close furnace wall is by superheated, and bed of material middle part can not in time be grilled thoroughly, occur " giving birth to core " phenomenon, not only affect blast furnace production, and cause a large amount of hot blasts not to be used effectively from the major end item agglomerate, running off.
Summary of the invention
The object of the invention provides a kind of agglomerate feeding system that improves blast furnace material distribution and utilizes this system to the method for the feed of blast furnace material distribution.This system and method has changed traditional blast furnace sinter ore deposit feed-type, and agglomerate is divided into big or small grade.Be conducive to the handiness of blast furnace material distribution system operation, improve bed permeability in the blast furnace, reduce working of a furnace fluctuation, be conducive to reduce the blast furnace energy consumption.
Be achieved through the following technical solutions on the purpose of the present invention:
The agglomerate feeding system that improves blast furnace material distribution of the present invention, comprise the agglomerate feeding device, central cooler, the agglomerate adhesive tape conveying machine, finished product ore deposit groove and be arranged on finished product ore deposit adhesive tape conveying machine between finished product ore deposit groove and the blast furnace roof material distributing device, it is characterized in that between agglomerate tape carrier and finished product ore deposit groove, being provided with sieve apparatus, described sieve apparatus is three grades of sieve apparatus, be provided with opening for feed and corresponding with one-level sieve oversize at three grades of sieve apparatus〉the large grade discharge port in finished product ore deposit of 20mm, grade grate-layer material discharge port in the 10-20mm finished product ore deposit corresponding with secondary sieve oversize, with three grades of 5-10mm grade finished product ore deposit granule level discharge ports corresponding to sieve oversize and with three grades of sieve screen undersizes corresponding＜the cold discharge port of returning mine of 5mm grade, described finished product ore deposit groove is two finished product ore deposit storage tankss, one is the large grade storage tanks in finished product ore deposit, one is finished product ore deposit agglomerate granule level storage tanks, the feed end of two finished product ore deposit storage tanks is connected with finished product ore deposit granule level discharge port with the large grade discharge port in the finished product ore deposit of sieve apparatus with finished product ore deposit agglomerate granule level adhesive tape conveying machine by the large grade adhesive tape conveying machine of finished product ore deposit agglomerate respectively, and the discharge end of two finished product ore deposit storage tankss is connected with blast furnace roof material distributing device with finished product ore deposit granule level adhesive tape conveyor by the large grade adhesive tape conveyor in the finished product ore deposit of two blast furnace feeds respectively.
The method of improving the agglomerate feed of blast furnace material distribution of the present invention comprises the following steps:
1) will be down to below 150 ℃ from finished product agglomerate temperature after the central cooler cooling of agglomerate feeding device 0-150mm out, be transported into three grades of sieve apparatus by the agglomerate adhesive tape conveying machine, the finished product agglomerate at first enters one-level and sieves, its oversize〉20mm grade 26% the agglomerate that accounts for the agglomerate total stuff amount feeds the large grade storage tanks in finished product ore deposit as the major end item agglomerate through the large grade adhesive tape conveying machine of finished product ore deposit agglomerate, and the screen undersize of one-level sieve feeds secondary and sieves, the oversize 10-20mm grade of its secondary sieve accounts for 24% of agglomerate total stuff amount, wherein 9% transport sintering machine feeding device to as grate-layer material, all the other 15% agglomerate feed finished product ore deposit groove granule level storage tanks, the screen undersize of secondary sieve feeds three grades of sieves and sieves, 5-10mm grade agglomerate feeds finished product ore deposit groove granule level storage tanks as little finished product through finished product ore deposit agglomerate granule level adhesive tape conveying machine on the sieve of its three grades of sieves, and the screen undersize of three grades of sieves＜5mm grade agglomerate returns proportioning room as cold returning mine, recycle
2) the finished product agglomerate after the classification carries out buffer memory at the large grade storage tanks of finished product ore deposit groove and two storages of finished product ore deposit groove granule level storage tanks ore deposit groove respectively, when need are just opened the large grade adhesive tape conveyor in finished product ore deposit when blast furnace provides the major end item agglomerate, the finished product ore deposit granule level adhesive tape conveyor of stopping transport simultaneously, after blast furnace is finished major end item agglomerate cloth, start finished product ore deposit granule level adhesive tape conveyor to blast furnace feeding by instruction, realize big or small grade agglomerate alternately, in order to blast furnace feeding.
Compared with prior art, the invention has the advantages that: because the present invention has changed traditional blast furnace sinter ore deposit feeding method, agglomerate is divided into big or small grade.And alternately, in order to blast furnace feeding, changed former shaft furnace charging structure, not only effectively controlled the particle segregation of charging process, improved the ventilation property of the bed of material, also so that roof material distributing regulate more flexible, for the stable smooth operation of blast furnace has been created favourable condition.
Description of drawings
Fig. 1 is agglomerate feeding system block diagram of the present invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, the agglomerate feeding system that improves blast furnace material distribution of the present invention, comprise agglomerate feeding device 1, central cooler 2, agglomerate adhesive tape conveying machine 3, finished product ore deposit groove and be arranged on finished product ore deposit adhesive tape conveying machine between finished product ore deposit groove and the blast furnace roof material distributing device, it is characterized in that between agglomerate tape carrier 3 and finished product ore deposit groove, being provided with sieve apparatus 4, described sieve apparatus 4 is three grades of sieve apparatus, be provided with opening for feed 16 and corresponding with one-level sieve oversize at three grades of sieve apparatus〉the large grade discharge port 12 in finished product ore deposit of 20mm, grade grate-layer material discharge port 15 in the 10-20mm finished product ore deposit corresponding with secondary sieve oversize, with three grades of 5-10mm grade finished product ore deposit granule level discharge ports 13 corresponding to sieve oversize and with three grades of sieve screen undersizes corresponding＜the cold discharge port 14 of returning mine of 5mm grade, described finished product ore deposit groove is two finished product ore deposit storage tankss, one is the large grade storage tanks 8 in finished product ore deposit, one is finished product ore deposit agglomerate granule level storage tanks 7, the feed end of two finished product ore deposit storage tanks is connected with finished product ore deposit granule level discharge port 13 with the large grade discharge port 12 in the finished product ore deposit of sieve apparatus with finished product ore deposit agglomerate granule level adhesive tape conveying machine 5 by the large grade adhesive tape conveying machine 6 of finished product ore deposit agglomerate respectively, and the discharge end of two finished product ore deposit storage tankss is connected with blast furnace roof material distributing device 10 with finished product ore deposit granule level adhesive tape conveyor 9 by the large grade adhesive tape conveyor 11 in the finished product ore deposit of two blast furnace feeds respectively.
A kind of method of improving the agglomerate feed of blast furnace material distribution of the present invention comprises the following steps:
1) will be down to below 150 ℃ from finished product agglomerate temperature after central cooler 2 coolings of agglomerate feeding device 1 0-150mm out, be transported into three grades of sieve apparatus 4 by agglomerate adhesive tape conveying machine 3, the finished product agglomerate at first enters one-level and sieves, its oversize〉20mm grade 26% the agglomerate that accounts for the agglomerate total stuff amount feeds the large grade storage tanks 8 in finished product ore deposit as the major end item agglomerate through the large grade adhesive tape conveying machine 6 of finished product ore deposit agglomerate, and the screen undersize of one-level sieve feeds secondary and sieves, the oversize 10-20mm grade of its secondary sieve accounts for 24% of agglomerate total stuff amount, wherein 9% transport sintering machine feeding device 1 to as grate-layer material, all the other 15% agglomerate feed finished product ore deposit groove granule level storage tanks 7, the screen undersize of secondary sieve feeds three grades of sieves and sieves, 5-10mm grade agglomerate feeds finished product ore deposit groove granule level storage tanks 7 as little finished product through finished product ore deposit agglomerate granule level adhesive tape conveying machine 5 on the sieve of its three grades of sieves, and the screen undersize of three grades of sieves＜5mm grade agglomerate returns proportioning room 17 as cold returning mine through the cold discharge port 14 of returning mine, recycle
2) the finished product agglomerate after the classification carries out buffer memory at the large grade storage tanks 8 of finished product ore deposit groove and 7 two storages of finished product ore deposit groove granule level storage tanks ore deposit groove respectively, when need are just opened the large grade adhesive tape conveyor 11 in finished product ore deposit when blast furnace provides the major end item agglomerate, the finished product ore deposit granule level adhesive tape conveyor 9 of stopping transport simultaneously, after blast furnace is finished major end item agglomerate cloth, start finished product ore deposit granule level adhesive tape conveyor 9 to blast furnace feeding by instruction, realize big or small grade agglomerate alternately, in order to blast furnace feeding.
Arrow represents sintering mineral aggregate flow path direction among the figure.
The present invention is because finished product ore deposit groove has certain volume reserves, can guarantee big or small grade finished product alternately, in order to blast furnace feeding, alleviate simultaneously the impact that the sintering mill (plant) is produced.
Claims (2)
1. agglomerate feeding system that improves blast furnace material distribution, comprise the agglomerate feeding device, central cooler, the agglomerate adhesive tape conveying machine, finished product ore deposit groove and be arranged on finished product ore deposit adhesive tape conveying machine between finished product ore deposit groove and the blast furnace roof material distributing device, it is characterized in that between agglomerate tape carrier and finished product ore deposit groove, being provided with sieve apparatus, described sieve apparatus is three grades of sieve apparatus, be provided with opening for feed and corresponding with one-level sieve oversize at three grades of sieve apparatus〉the large grade discharge port in finished product ore deposit of 20mm, grade grate-layer material discharge port in the 10-20mm finished product ore deposit corresponding with secondary sieve oversize, with three grades of 5-10mm grade finished product ore deposit granule level discharge ports corresponding to sieve oversize and with three grades of sieve screen undersizes corresponding＜the cold discharge port of returning mine of 5mm grade, described finished product ore deposit groove is two finished product ore deposit storage tankss, one is the large grade storage tanks in finished product ore deposit, one is finished product ore deposit agglomerate granule level storage tanks, the feed end of two finished product ore deposit storage tanks is connected with finished product ore deposit granule level discharge port with the large grade discharge port in the finished product ore deposit of sieve apparatus with finished product ore deposit agglomerate granule level adhesive tape conveying machine by the large grade adhesive tape conveying machine of finished product ore deposit agglomerate respectively, and the discharge end of two finished product ore deposit storage tankss passes through respectively the large grade adhesive tape conveyor in finished product ore deposit and finished product ore deposit granule level adhesive tape conveyor and the blast furnace roof material distributing dress of two blast furnace feeds
Put and be connected.
2. a method of improving the agglomerate feed of blast furnace material distribution comprises the following steps:
1) will be down to below 150 ℃ from finished product agglomerate temperature after the central cooler cooling of agglomerate feeding device 0-150mm out, be transported into three grades of sieve apparatus by the agglomerate adhesive tape conveying machine, the finished product agglomerate at first enters one-level and sieves, its oversize〉20mm grade 26% the agglomerate that accounts for the agglomerate total stuff amount feeds the large grade storage tanks in finished product ore deposit as the major end item agglomerate through the large grade adhesive tape conveying machine of finished product ore deposit agglomerate, and the screen undersize of one-level sieve feeds secondary and sieves, the oversize 10-20mm grade of its secondary sieve accounts for 24% of agglomerate total stuff amount, wherein 9% transport sintering machine feeding device to as grate-layer material, all the other 15% agglomerate feed finished product ore deposit groove granule level storage tanks, the screen undersize of secondary sieve feeds three grades of sieves and sieves, 5-10mm grade agglomerate feeds finished product ore deposit groove granule level storage tanks as little finished product through finished product ore deposit agglomerate granule level adhesive tape conveying machine on the sieve of its three grades of sieves, and the screen undersize of three grades of sieves＜5mm grade agglomerate returns proportioning room as cold returning mine through the cold discharge port of returning mine, recycle
2) the finished product agglomerate after the classification carries out buffer memory at the large grade storage tanks of finished product ore deposit groove and two storages of finished product ore deposit groove granule level storage tanks ore deposit groove respectively, when need are just opened the large grade adhesive tape conveyor in finished product ore deposit when blast furnace provides the major end item agglomerate, the finished product ore deposit granule level adhesive tape conveyor of stopping transport simultaneously, after blast furnace is finished major end item agglomerate cloth, start finished product ore deposit granule level adhesive tape conveyor to blast furnace feeding by instruction, realize big or small grade agglomerate alternately, in order to blast furnace feeding.
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| CN103643038A (en) * | 2013-11-22 | 2014-03-19 | 攀钢集团攀枝花钢钒有限公司 | Paving method for sintering machine's bilayer bedding materials |
| CN104142069A (en) * | 2014-07-28 | 2014-11-12 | 中冶南方工程技术有限公司 | Recovery system for waste heat of blast furnace raw materials and recovery method thereof |
| CN110709663A (en) * | 2017-05-22 | 2020-01-17 | 保尔伍斯股份有限公司 | Method for operating a sintering device |
| CN113816381A (en) * | 2021-11-08 | 2021-12-21 | 宁夏天净隆鼎碳化硅有限公司 | Method for smelting silicon carbide by utilizing sealed environment-friendly silicon carbide smelting furnace |
| CN114251948A (en) * | 2020-09-22 | 2022-03-29 | 中冶长天国际工程有限责任公司 | Sintering fuel segregation distributing device and method |
| CN115069554A (en) * | 2022-06-17 | 2022-09-20 | 武汉钢铁有限公司 | Flow dividing and screening system and working method thereof |
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| JP2020521050A (en) * | 2017-05-22 | 2020-07-16 | ポール ワース エス．アー． | Sinter plant operation method |
| JP7116089B2 (en) | 2017-05-22 | 2022-08-09 | ポール ワース エス．アー． | Sintering plant operation method |
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| CN114251948A (en) * | 2020-09-22 | 2022-03-29 | 中冶长天国际工程有限责任公司 | Sintering fuel segregation distributing device and method |
| CN113816381A (en) * | 2021-11-08 | 2021-12-21 | 宁夏天净隆鼎碳化硅有限公司 | Method for smelting silicon carbide by utilizing sealed environment-friendly silicon carbide smelting furnace |
| CN115069554A (en) * | 2022-06-17 | 2022-09-20 | 武汉钢铁有限公司 | Flow dividing and screening system and working method thereof |
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Application publication date: 20130320 |