CN213739539U - Optimized small slag flushing system for blast furnace - Google Patents
Optimized small slag flushing system for blast furnace Download PDFInfo
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- CN213739539U CN213739539U CN202022239884.XU CN202022239884U CN213739539U CN 213739539 U CN213739539 U CN 213739539U CN 202022239884 U CN202022239884 U CN 202022239884U CN 213739539 U CN213739539 U CN 213739539U
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- pump
- slag
- pump house
- sediment
- backwater
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- 239000002893 slag Substances 0.000 title claims abstract description 118
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 21
- 239000002002 slurry Substances 0.000 claims description 51
- 238000005469 granulation Methods 0.000 claims description 17
- 230000003179 granulation Effects 0.000 claims description 17
- 238000007599 discharging Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 35
- 239000013049 sediment Substances 0.000 abstract description 35
- 239000007788 liquid Substances 0.000 abstract description 19
- 239000003818 cinder Substances 0.000 abstract description 8
- 238000010079 rubber tapping Methods 0.000 abstract description 6
- 238000005453 pelletization Methods 0.000 abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 238000000926 separation method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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- Manufacture Of Iron (AREA)
Abstract
The utility model provides a blast furnace optimizes little flushing slag system, includes dehydrator, baffle-box, belt, sediment thick liquid return pump house pump, pelletization return pump house pump, sediment thick liquid return pump house sediment storehouse, two rows of cinder ponds, and the blast furnace is connected through arranging the cinder ditch the sediment storehouse of sediment thick liquid return pump house, two rows of cinder ponds of pipe connection are passed through to the entry of pelletization pump house pump, and the export of pelletization pump house pump passes through pipe connection sediment thick liquid return pump house sediment storehouse, and sediment thick liquid return pump house sediment storehouse passes through the entry of pipe connection sediment thick liquid return pump house pump, and the export of sediment thick liquid return pump house pump is respectively through pipe connection baffle-box and two rows of cinder ponds, is equipped with valve I on the connecting tube of sediment thick liquid return pump house pump and baffle-box, is equipped with valve II on the connecting tube of sediment thick liquid return pump house pump and two rows of cinder ponds. The utility model discloses jia constant method combines with accident slag technology, when the blast furnace tapping, can carry out two places tapping simultaneously and accompany supplementary towards the sediment operation, when can ensuring the crane and shut down, the operation of slagging tap of normal operating.
Description
Technical Field
The utility model relates to an iron-making process, in particular to an optimized small slag flushing system of a blast furnace.
Background
The 7 blast furnaces of a certain ironmaking central plant are put into operation in 2004. Because of the limitation of the field, the site and other factors, the 7 blast furnace slag flushing system adopts laggard wheel method process with a slag bath, slag bath method process and improved Jiaheng method process. Namely a slag slurry backwater pump room slag bin type small slag flushing method, a No. 1 dehydrator system rotation method process method and a No. 2 dehydrator system constant process method (as shown in figure 2). The slag bin type small slag flushing method system for the slag slurry backwater pump house mainly comprises 5 pumps of the slag slurry backwater pump house, 6 pumps of the granulation pump house, an overhead chute 10 and two rows of 2 cranes. The original process comprises the steps of crushing the red slag by pumping water through the granulation pump room 7, pumping the water through the slag slurry backwater pump room 9, returning the water to the slag pool 11 through the overhead chute 10, and then grabbing the slag by a crane and transporting the slag outwards. The method has the following defects of simple process, long equipment operating line, more faults, high crane operating frequency, serious system abrasion and aging and the like, and restricts the iron output of the blast furnace.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a little towards sediment system is optimized to blast furnace, squeezes into the dehydrator with blast furnace thick liquid backwater pump room pump grain sediment, and the sediment water separation back through the dehydrator will be dry the sediment and pass through the belt and export outward. The original accident slag flushing method and the Jiaheng method are fused, and the method is optimized into a small slag flushing process, so that the utilization rate of dehydrator equipment is improved, and the water slag outward conveying mode of a slag pulp backwater pump room pump is improved.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a blast furnace optimized small slag flushing system comprises a dehydrator, a buffer tank, a belt, a slag slurry backwater pump room pump, a granulating backwater pump room pump, a slag slurry backwater pump room slag bin and two rows of slag pools, wherein a blast furnace is connected with the slag slurry backwater pump room slag bin through a slag discharge ditch, the inlet of the granulating pump room pump is connected with the two rows of slag pools through a pipeline, the outlet of the granulating pump room pump is connected with the slag slurry backwater pump room slag bin through a pipeline, the slag slurry backwater pump room slag bin is connected with the inlet of the slag slurry backwater pump room pump through a pipeline, the outlet of the slag slurry backwater pump room pump is respectively connected with the buffer tank and the two rows of slag pools through a pipeline, a valve I is arranged on a connecting pipeline of the slag slurry backwater pump room pump and the buffer tank, the buffer tank is connected with the dehydrator for discharging slag to the belt, the dehydrator is connected with the inlet of the granulating backwater pump room pump through a pipeline, the outlet of the granulating backwater pump room is connected with the two rows of slag pools through a pipeline, and a valve II is arranged on a connecting pipeline between the slurry backwater pump room pump and the two-row slag pool.
The slurry backwater pump house pump is provided with 3-6 slurry pumps, the granulation pump house pump is provided with 4-6 granulation pumps, and the granulation backwater pump house pump is provided with 3-6 slurry pumps.
The inner diameter of the connecting pipeline between the slurry backwater pump room pump and the buffer tank is matched with the buffer tank.
Compared with the prior art, the beneficial effects of the utility model are that:
the small slag flushing process has the advantages that the jacobian method is combined with the accident slag process, two sets of slag flushing processes are used simultaneously when the blast furnace is subjected to tapping, once an accident occurs during single-field tapping, another set of slag flushing process can be used for tapping immediately, a slag water mixture entering a slag slurry return pump room is pumped into a dehydrator simultaneously, the smooth operation of tapping and slag discharging of the blast furnace is guaranteed, and the normal operation of the small slag flushing process during the shutdown of a crane (the accident slag process cannot be operated) can be guaranteed along with the auxiliary slag flushing operation.
Drawings
Fig. 1 is a process flow diagram of the present invention.
In the figure: 1 chimney, 2 dehydrator, 3 receiving tower, 4 baffle box, 5 belt, 6 connecting pipeline of slurry backwater pump room pump and baffle box, 7 slurry backwater pump room pump, 8 granulating backwater pump room pump, 9 granulating pump room pump, 10 slurry backwater pump room slag bin, 11 valve I, 12 two rows of slag bath, 13 blast furnace, 14 slurry backwater pump room pump and two rows of connecting pipeline of slag bath, 15 valve II.
FIG. 2 is a process flow diagram of an original slag flushing system.
In the figure: 1 receiving tower, 22 # dehydrator, 31 # dehydrator, 4 belts, 5 granulating backwater pump house slag bin, 6 slag slurry backwater pump house slag bin, 7 granulating pump house, 8 granulating backwater pump house, 9 slag slurry backwater pump house, 10 elevated chute, 11 two rows of slag pools, 12 slag ditches and 13 blast furnace.
Detailed Description
The following further describes the embodiments of the present invention:
see fig. 1, a blast furnace optimizes little flushing slag system, including dehydrator 2, surge tank 4, belt 5, sediment thick liquid backwater pump house pump 7, granulation pump house pump 9, granulation backwater pump house pump 8, sediment thick liquid backwater pump house slag storehouse 10, two rows of cinder ponds 12, blast furnace 13 is connected through the slag runner slag storehouse 10 of sediment thick liquid backwater pump house, the entry of granulation pump house pump 9 passes through pipe connection two rows of cinder ponds 12, the export of granulation pump house pump 9 passes through pipe connection sediment thick liquid backwater pump house slag storehouse 10, sediment thick liquid backwater pump house slag storehouse 10 passes through the entry of pipe connection sediment thick liquid backwater pump house pump 7, the export of sediment thick liquid backwater pump house pump 7 respectively through pipe connection surge tank 4 and two rows of cinder ponds 12 be equipped with valve I11 on the connecting tube 6 of sediment thick liquid backwater pump house pump 7 and surge tank 4, surge tank 4 connects dehydrator 2 to belt 5, the dehydrator 5 is connected with an inlet of a granulating backwater pump house pump 8 through a pipeline, an outlet of the granulating backwater pump house pump 8 is connected with a secondary slag discharging pool 12 through a pipeline, and a valve II 15 is arranged on a connecting pipeline 14 between the slag slurry backwater pump house pump 7 and the secondary slag discharging pool 12.
The slurry backwater pump house pump is provided with 3-6 slurry pumps, the granulation pump house pump is provided with 4-6 granulation pumps, and the granulation backwater pump house pump is provided with 3-6 slurry pumps.
The inner diameters of the connecting pipelines 6 of the slurry backwater pump house 7 and the buffer tank 4 are matched with the inlet of the buffer tank 4.
The technical process of the utility model is as follows: the blast furnace 13 discharges slag to the slag bin 7 of the slag slurry backwater pump house, the granulating pump house pump 9 sends water to the slag bin 10 of the slag slurry backwater pump house, the valve II 15 is cut off in the slag flushing process, the connecting pipeline 6 between the slag slurry backwater pump house pump 7 and the buffer tank 4 is used, namely, the slag-water mixture in the slag bin 10 of the slag slurry backwater pump house is pumped into the dehydrator 2 of the Jiaheng system, the system participates in the operation, the slag is further transported out from the belt 5, and the water after the slag-water separation is pumped back to the two-row slag pool 12 by the granulating backwater pump house pump 8. During maintenance, the valve I11 is cut off, and the connecting pipeline 14 of the slag slurry backwater pump house pump 7 and the two-row slag pool 12 is used, namely, the slag water mixture in the slag chamber 10 of the slag slurry backwater pump house is directly pumped back to the two-row slag pool 12.
The utility model discloses an utilized equipment facilities such as original sediment storehouse, water pump to fuse with jia constant method system, implement high-efficient ground sediment water separation, dry sediment defeated outward, the aquatic contains sediment volume greatly reduced, and then reduces pipeline, overhead chute wearing and tearing degree, has delayed 12 sediment boards knot speeds in two rows of sediment ponds.
In addition, the utility model discloses mainly utilize granulation pump house pump 9 to carry out the water-washed sediment granulation operation, the sediment thick liquid backwater pump house pump 7 is beaten water and is got into dehydrator 2 and dewaters, separate the operation, carries out the sediment water separation, realizes that accident slag pump and jia constant method equipment combine the sludging. That is, the water coming from the granulating pump house 9 and the water removed from the slurry backwater pump house 7 must be balanced, 2 granulating pumps correspond to 1 or 1 half of the slurry pumps of the slurry backwater pump house 7, and the water quantity is controlled by a valve.
Claims (3)
1. The optimized small slag flushing system for the blast furnace is characterized by comprising a dehydrator, a buffer tank, a belt, a slag slurry backwater pump house pump, a granulating backwater pump house pump, a slag slurry backwater pump house slag bin and two slag discharging pools, wherein the blast furnace is connected with the slag slurry backwater pump house slag bin through a slag discharging ditch, the inlet of the granulating pump house pump is connected with the two slag discharging pools through a pipeline, the outlet of the granulating pump house pump is connected with the slag slurry backwater pump house slag bin through a pipeline, the slag slurry backwater pump house slag bin is connected with the inlet of the slag slurry backwater pump house pump through a pipeline, the outlet of the slag slurry backwater pump house pump is respectively connected with the buffer tank and the two slag discharging pools through pipelines, a valve I is arranged on a connecting pipeline of the slag slurry backwater pump house pump and the buffer tank, the buffer tank is connected with the dehydrator, the dehydrator is used for discharging slag to the belt, and the dehydrator is connected with the inlet of the granulating pump house pump through a pipeline, the outlet of the granulating backwater pump room pump is connected with the two rows of slag pools through a pipeline, and a valve II is arranged on a connecting pipeline between the slag slurry backwater pump room pump and the two rows of slag pools.
2. The optimized small flushing slag system of the blast furnace as claimed in claim 1, wherein the slag slurry backwater pump house is provided with 3-6 slag slurry pumps, the granulation pump house is provided with 4-6 granulation pumps, and the granulation backwater pump house is provided with 3-6 slag slurry pumps.
3. The optimized small slag flushing system of the blast furnace as claimed in claim 1, wherein the inner diameter of the connecting pipeline of the slag slurry backwater pump room pump and the buffer tank is matched with that of the buffer tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022239884.XU CN213739539U (en) | 2020-10-10 | 2020-10-10 | Optimized small slag flushing system for blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022239884.XU CN213739539U (en) | 2020-10-10 | 2020-10-10 | Optimized small slag flushing system for blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213739539U true CN213739539U (en) | 2021-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022239884.XU Active CN213739539U (en) | 2020-10-10 | 2020-10-10 | Optimized small slag flushing system for blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213739539U (en) |
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2020
- 2020-10-10 CN CN202022239884.XU patent/CN213739539U/en active Active
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