CN202989184U - Sintering ore feeding system for improving blast furnace material distribution - Google Patents
Sintering ore feeding system for improving blast furnace material distribution Download PDFInfo
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- CN202989184U CN202989184U CN 201220722572 CN201220722572U CN202989184U CN 202989184 U CN202989184 U CN 202989184U CN 201220722572 CN201220722572 CN 201220722572 CN 201220722572 U CN201220722572 U CN 201220722572U CN 202989184 U CN202989184 U CN 202989184U
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Abstract
The utility model relates to a sintering ore feeding system for improving blast surface material distribution. A screening machine which is a three-stage screening machine is arranged between a singer conveying adhesive tape and a finished ore groove, a feeding port and four discharging ports are formed in the three-stage screening machine, and the finished ore groove is provided with two storage grooves for sintering ores in two size fractions. By adopting the system, the sintering ores in large and small size fractions are alternately and orderly fed to the blast surface. The system provided by the utility model has the advantages that the sintering ores are classified into large and small size fractions and alternately and orderly fed to the blast furnace, the original loading structure of the blast surface is changed, the granularity segregation in the loading process is effectively controlled to improve the air permeability of the material layer, and the material distribution at the furnace top is adjusted more flexibly, thereby creating an advantageous condition for the stable and smooth operation of the blast furnaced.
Description
Technical field
The utility model relates to a kind of raw mineral materials agglomerate feed technique, especially a kind of agglomerate feeding system that improves blast furnace material distribution.
Background technology
in blast-furnace smelting is produced, agglomerate accounts for furnace charge ratio approximately～85% left and right, granularity is at 5～150mm, therefore the granularity of agglomerate and distribution determine the ventilation property of the bed of material in 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, segregation effect due to 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 gap, and the agglomerate of little grade is gathered in the middle part of the bed of material, cause bed of material density large, force the hot blast major part that is blown into bottom blast furnace 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 can not in time grill thoroughly in the middle part of the bed of material, 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 running off from the major end item agglomerate.
Summary of the invention
The utility model purpose is to provide a kind of agglomerate feeding system that improves blast furnace material distribution.This system 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 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 this utility model:
the agglomerate feeding system that improves blast furnace material distribution of the present utility model, 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 blast furnace roof material distributing device, it is characterized in that being provided with sieve apparatus between agglomerate tape carrier and finished product ore deposit groove, described sieve apparatus is three grades of sieve apparatus, be provided with opening for feed and corresponding with one-level sieve oversize on three grades of sieve apparatus〉the large grade discharge port in finished product ore deposit of 20mm, grade grate-layer material discharge port in corresponding with secondary sieve oversize 10-20mm finished product ore deposit, 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 large grade discharge port in finished product ore deposit by the large grade adhesive tape conveying machine of finished product ore deposit agglomerate and finished product ore deposit agglomerate granule level adhesive tape conveying machine and sieve apparatus respectively is connected with finished product ore deposit granule level discharge port, the discharge end of two the finished product ore deposit storage tankss large grade adhesive tape conveyor in finished product ore deposit by two blast furnace feeds respectively is connected with blast furnace roof material distributing device with finished product ore deposit granule level adhesive tape conveyor.
Finished product agglomerate after classification stores the ore deposit groove at the finished product large grade storage tanks of ore deposit groove and two of finished product ore deposit groove granule level storage tankss respectively and carries out buffer memory, when providing the major end item agglomerate, just opens in blast furnace the large grade adhesive tape conveyor in finished product ore deposit when need, the finished product ore deposit granule level adhesive tape conveyor of stopping transport simultaneously, after blast furnace is completed 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 utility model has the advantage of: because the utility model 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 make 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 utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
as shown in Figure 1, the agglomerate feeding system that improves blast furnace material distribution of the present utility model, 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 blast furnace roof material distributing device, it is characterized in that being provided with sieve apparatus 4 between agglomerate tape carrier 3 and finished product ore deposit groove, described sieve apparatus 4 is three grades of sieve apparatus, be provided with opening for feed 16 and corresponding with one-level sieve oversize on 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 corresponding with secondary sieve oversize 10-20mm finished product ore deposit, the 5-10mm grade finished product ore deposit granule level discharge port 13 corresponding with three grades of sieve oversizes 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 large grade discharge port 12 in finished product ore deposit by the large grade adhesive tape conveying machine 6 of finished product ore deposit agglomerate and finished product ore deposit agglomerate granule level adhesive tape conveying machine 5 and sieve apparatus respectively is connected with finished product ore deposit granule level discharge port 13, the discharge end of two the finished product ore deposit storage tankss large grade adhesive tape conveyor 11 in finished product ore deposit by two blast furnace feeds respectively is connected with blast furnace roof material distributing device 10 with finished product ore deposit granule level adhesive tape conveyor 9.
The agglomerate feeding system that adopts the utility model to improve blast furnace material distribution carries out the method for feed to blast furnace, comprise the following steps:
1) will be down to below 150 ℃ from finished product agglomerate temperature after central cooler 2 is cooling of agglomerate feeding device 1 0-150mm out, be transported into three grades of sieve apparatus 4 by agglomerate adhesive tape conveying machine 3, at first the finished product agglomerate sieves in one-level, 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% agglomerate of 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, on the sieve of its three grades of 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, and the screen undersize of three grades of sieves＜5mm grade agglomerate returns to proportioning room 17 as cold returning mine through the cold discharge port 14 of returning mine, recycle,
2) the finished product agglomerate after classification stores the ore deposit groove at the finished product large grade storage tanks 8 of ore deposit groove and 7 two of finished product ore deposit groove granule level storage tankss respectively and carries out buffer memory, when providing the major end item agglomerate, just opens in blast furnace the large grade adhesive tape conveyor 11 in finished product ore deposit when need, the finished product ore deposit granule level adhesive tape conveyor 9 of stopping transport simultaneously, after blast furnace is completed 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.
In figure, arrow represents sintering mineral aggregate flow path direction.
The utility model 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 (1)
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 blast furnace roof material distributing device, it is characterized in that being provided with sieve apparatus between agglomerate tape carrier and finished product ore deposit groove, described sieve apparatus is three grades of sieve apparatus, be provided with opening for feed and corresponding with one-level sieve oversize on three grades of sieve apparatus〉the large grade discharge port in finished product ore deposit of 20mm, grade grate-layer material discharge port in corresponding with secondary sieve oversize 10-20mm finished product ore deposit, sieve 5-10mm grade finished product ore deposit granule level discharge port corresponding to oversize and sieve the cold discharge port of returning mine of corresponding＜5mm grade under products with three grades of sieves with three grades, 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 large grade discharge port in finished product ore deposit by the large grade adhesive tape conveying machine of finished product ore deposit agglomerate and finished product ore deposit agglomerate granule level adhesive tape conveying machine and sieve apparatus respectively is connected with finished product ore deposit granule level discharge port, the discharge end of two the finished product ore deposit storage tankss large grade adhesive tape conveyor in finished product ore deposit by two blast furnace feeds respectively is connected with blast furnace roof material distributing device with finished product ore deposit granule level adhesive tape conveyor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220722572 CN202989184U (en) | 2012-12-25 | 2012-12-25 | Sintering ore feeding system for improving blast furnace material distribution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220722572 CN202989184U (en) | 2012-12-25 | 2012-12-25 | Sintering ore feeding system for improving blast furnace material distribution |
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| Publication Number | Publication Date |
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| CN202989184U true CN202989184U (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220722572 Expired - Fee Related CN202989184U (en) | 2012-12-25 | 2012-12-25 | Sintering ore feeding system for improving blast furnace material distribution |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102978313A (en) * | 2012-12-25 | 2013-03-20 | 中冶北方（大连）工程技术有限公司 | Sinter feeding system and method for improving burden distribution of blast furnace |
-
2012
- 2012-12-25 CN CN 201220722572 patent/CN202989184U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102978313A (en) * | 2012-12-25 | 2013-03-20 | 中冶北方（大连）工程技术有限公司 | Sinter feeding system and method for improving burden distribution of blast furnace |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20201225 |