CN210845528U - Water filtering equipment after molten slag granulation in smelting process of blast furnace or submerged arc furnace - Google Patents
Water filtering equipment after molten slag granulation in smelting process of blast furnace or submerged arc furnace Download PDFInfo
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- CN210845528U CN210845528U CN201921397302.1U CN201921397302U CN210845528U CN 210845528 U CN210845528 U CN 210845528U CN 201921397302 U CN201921397302 U CN 201921397302U CN 210845528 U CN210845528 U CN 210845528U
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- slag
- filter screen
- shell
- water
- blast furnace
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- 239000002893 slag Substances 0.000 title claims abstract description 154
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 238000001914 filtration Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000003723 Smelting Methods 0.000 title claims abstract description 23
- 238000005469 granulation Methods 0.000 title claims abstract description 23
- 230000003179 granulation Effects 0.000 title claims abstract description 23
- 239000004575 stone Substances 0.000 claims abstract description 17
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000009825 accumulation Methods 0.000 claims description 9
- 238000005192 partition Methods 0.000 claims description 4
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 9
- 238000010248 power generation Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000012141 concentrate Substances 0.000 abstract description 2
- 238000011010 flushing procedure Methods 0.000 description 18
- 239000000203 mixture Substances 0.000 description 10
- 238000011001 backwashing Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 240000007643 Phytolacca americana Species 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- WSNMPAVSZJSIMT-UHFFFAOYSA-N COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 Chemical compound COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 WSNMPAVSZJSIMT-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
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Abstract
The utility model relates to a water filtering device after slag granulation in the smelting process of a blast furnace or an ore-smelting furnace, which belongs to the technical field of slag treatment of the blast furnace or the ore-smelting furnace. The technical scheme is as follows: the shell (9) is of an upper opening groove type, and a feeding port (29) and a discharging port (28) of the shell (9) are respectively connected with the granulating equipment and the slag processing equipment; at least one layer (25) is arranged at the bottom of the shell (9), and filtering stones (13) are arranged on the filter screen (25). The utility model has the advantages that: a special water filter is added between the granulation equipment and the slag treatment equipment to concentrate slag hydrate, so that the production efficiency is improved, and the failure rate is reduced; in addition, the filtered water has good quality and can be directly used for heating and power generation.
Description
Technical Field
The utility model relates to a water filtering device after slag granulation in the smelting process of a blast furnace or an ore-smelting furnace, which belongs to the field of slag treatment equipment of the blast furnace or the ore-smelting furnace.
Background
Currently, in the field of metal smelting, there are many blast furnace or submerged arc furnace slag treatment technologies in use, including: the slag treatment technical methods of the Lassah method, the Yinba method, the Czochralski method and the like have some problems in different degrees, such as large slag content of filtered water, high failure rate and the like. For example: the technological process of the Lasa method, the Yinba method, the Czochralski method and the like includes that blast furnace or ore-smelting furnace slag is granulated by high-pressure water of granulating equipment, enters a slag flushing channel, enters a slag inlet chute from the slag flushing channel, then enters slag treatment equipment, a slag-water mixture is dehydrated in the slag treatment equipment (a rotary filter), falls into a slag outlet chute, then enters a belt conveyor, and is conveyed to a designated place by the belt conveyor, water and fine slag filtered out from the bottom of the slag treatment equipment (the rotary filter) return to a pump station water pool through a slag-water conveying pipeline, and the problems of high equipment failure rate, high production consumption and the like are caused by large slag content of filtered water. The most important reasons for the above problems are: no water filtration is carried out behind the slag sluiceway of the granulation equipment, so that the water content of the slag-water mixture is too high; because no special water filtering equipment after slag granulation exists, how to filter water after slag granulation becomes a technical problem to be solved urgently in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a water filtering equipment after the slag granulation in the smelting process of a blast furnace or a submerged arc furnace, which adds a special water filtering treatment equipment between the granulation equipment and the slag treatment equipment and solves the above problems existing in the background technology.
The technical scheme of the utility model is that:
a water filtering device after slag granulation in the smelting process of a blast furnace or a submerged arc furnace comprises a shell, a filter screen and filter stones; the shell is of an upper opening groove type, and a feeding port and a discharging port of the shell are respectively connected with the granulating equipment and the slag processing equipment; at least one layer of filter screen is arranged at the bottom of the shell, and filtering stones are arranged on the filter screen.
The quantity of filter screen is the multilayer, all sets up between each layer filter screen and filters the stone. For example: two layers of filter screens are arranged, a second filter screen is arranged on the bottom filter screen, and the filtering stones are arranged between the second filter screen and the filter screens.
The filter screen is made of stainless steel, carbon fiber, nylon and the like.
In order to prevent the slag accumulation in the water filtering equipment, a waterproof slag accumulation propelling device is arranged in the shell and comprises a first slag extractor; the first slag extractor is arranged close to the discharge hole and is formed by installing a slag extractor on a central shaft.
The waterproof slag accumulation propelling device further comprises a slag water distributor, the slag water distributor is arranged close to the feeding port, and the slag water distributor is formed by installing a slag poking device on a central shaft.
One or more slag extractor II is/are arranged between the slag water distributor and the slag extractor I, and the slag extractor II is formed by installing a slag extractor on a central shaft.
The slag poking device is formed by combining one or more than two of a plurality of poking teeth, helical blades, poking sheets and poking rods, and the slag poking device rotates along with the central shaft to poke surrounding materials.
The first slag extractor has three structures:
the structure I is as follows: helical blades are arranged on two sides of the central shaft, and a plurality of shifting teeth are arranged in the middle of the central shaft; the spiral blades on the two sides have opposite rotating directions and convey materials to the center; the first structure is applicable when the discharge port is on the central axis of the upper opening groove type shell and the width of the discharge port is smaller than the width of the notch of the upper opening groove type shell.
The structure II is as follows: the slag extractor I is formed by installing a plurality of shifting teeth on a central shaft and is not provided with a helical blade; and the second structure is suitable for the case that the discharge port is arranged on the central axis of the upper opening groove type shell, and the width of the discharge port is more than or equal to the width of the notch of the upper opening groove type shell.
The structure is three: all the spiral blades are arranged on the central shaft, and materials are conveyed to one side; the discharge port is arranged on the side face of the shell, and the structure is applicable to the third structure.
The shell is a groove-shaped steel structural member, and can also be made into a groove-shaped structure by reinforced concrete.
Criss-cross steel clapboards are arranged between the second filter screen and between the second filter screen and the bottom of the shell, a space between the second filter screen and a space between the second filter screen and the bottom of the shell are divided into a plurality of lattices, and filtering stones are arranged in the lattices; the criss-cross steel partition plates are provided with holes which are communicated with an exhaust pipe outside the shell.
A plurality of front baffles and rear baffles which are vertically arranged are arranged on the second filter screen, the front baffles are arranged on one side close to the feeding port, and the rear baffles are arranged on one side close to the discharging port; the height of the front baffle is higher than that of the rear baffle, and a groove is formed in the front baffle.
The granulation equipment comprises various granulation treatment facilities, such as a granulation tower, and is connected with the feeding port of the shell through a slag flushing ditch; the width of the notch of the shell is larger than that of the slag sluiceway of the granulating equipment.
The slag treatment facility includes various slag treatment facilities, such as bucket wheel slag extractors.
And a back washing system consisting of a water return pipeline and a valve is arranged at the bottom of the shell and is connected with a slag flushing pump station. The water return pipeline and the slag flushing pump station can be connected with heating and power generation facilities.
The bucket-wheel slag extractor is composed of a plurality of hoppers arranged along the circumference, the hoppers rotate around the circle center, and filter holes are formed in the hoppers.
Liquid slag in the production and smelting of a blast furnace or a submerged arc furnace enters a granulation tower, is granulated by high-pressure water to form a slag-water mixture, flows downwards along a slag flushing channel under the action of water flow, enters a water filter, the slag-water mixture filters a large part of water in the water filter, the filtered water enters a backwashing system and returns to a slag flushing pump station, and the high-pressure water is pumped out by a water pump of the slag flushing pump station to be used for granulating the slag; hot water of the back washing system and the slag flushing pump station can be used for heating and power generation;
the slag-water mixture after being concentrated in the water filter enters slag treatment equipment, the slag-water mixture continues to filter water in the slag treatment equipment, and slag after being filtered is transported to a designated place;
the water filter is periodically back flushed by gas and pressure water, so that the water permeability and the filtering performance of the water filter are ensured.
The utility model filters water through the water filter arranged between the granulating device and the slag treatment device, reduces the water quantity entering the slag treatment device, has good water filtering effect, improves the conveying capacity and efficiency of the slag treatment device, reduces the abrasion to the device and prolongs the service life of the device; the water quality is ensured, a wear-resistant pipeline and a slurry pump are not needed, the equipment investment and the failure rate are greatly reduced, and the residual hot water can be used for power generation and heating.
The utility model has the advantages that: a special water filter is added between the granulation equipment and the slag treatment equipment to concentrate slag hydrate, so that the production efficiency is improved, and the failure rate is reduced; in addition, the filtered water has good quality and can be directly used for heating and power generation.
Drawings
FIG. 1 is a process flow diagram suitable for use with embodiments of the present invention;
FIG. 2 is a front view of an embodiment of the present invention;
FIG. 3 is a top view of an embodiment of the present invention;
FIG. 4 is a side view of an embodiment of the present invention;
FIG. 5 is a schematic view of a front baffle of a water filter according to an embodiment of the present invention;
FIG. 6 is a schematic view of a back baffle of a water filter according to an embodiment of the present invention;
FIG. 7 is a top view of a second embodiment of the present invention;
figure 8 is a third top view of an embodiment of the present invention;
FIG. 9 is a schematic view of a slag extractor according to an embodiment of the present invention;
FIG. 10 is a schematic view of a slag extractor according to a second embodiment of the present invention;
FIG. 11 is a schematic view of a slag extractor according to a third embodiment of the present invention;
in the figure: the slag filtering device comprises a slag filtering pool 1, a belt conveyor 2, a bucket wheel slag extractor 3, a water filter 5, a slag flushing ditch 6, a back flushing system 7, a shell 9, a first slag extractor 10, a second slag extractor 11, a slag water distributor 12, a filtering stone 13, a second filter screen 14, an exhaust pipe 15, a water return pipeline 16, a blast furnace or ore heating furnace 17, a granulation tower 18, a slag flushing pump station 19, a groove 20, a front baffle 21, a rear baffle 22, a steel partition plate 23, a hole 24, a filter screen 25, a central shaft 26, spiral blades 27, a discharge hole 28 and a feed inlet 29.
Detailed Description
The present invention will be further explained by embodiments with reference to the accompanying drawings.
A water filtering device after slag granulation in the smelting process of a blast furnace or a submerged arc furnace comprises a shell 9, a filter screen 25 and filter stones 13; the shell 9 is of an upper opening groove type, and a feeding port 29 and a discharging port 28 of the shell 9 are respectively connected with granulating equipment and slag processing equipment; at least one layer of filter screen 25 is arranged at the bottom of the shell 9, and the filter stones 13 are arranged on the filter screen 25.
The quantity of filter screen is the multilayer, all sets up between each layer filter screen and filters the stone. For example: two layers of filter screens are arranged, a second filter screen 14 is arranged on the bottom filter screen 25, and the filtering stones are arranged between the second filter screen and the filter screens.
The filter screen is made of stainless steel.
A water filtering device is arranged between the granulating device and the slag treatment device, so that molten slag accumulation can be caused, and in order to prevent the molten slag accumulation from occurring in the water filtering device, a waterproof slag accumulation propelling device is arranged in the shell 9 and comprises a first slag extractor 10; the first slag extractor 10 is arranged close to the discharge hole 28, and the first slag extractor 10 is formed by installing a slag extractor on a central shaft.
The waterproof slag accumulation propelling device further comprises a slag water distributor 12, the slag water distributor 12 is arranged close to the feeding port 29, and the slag water distributor 12 is formed by installing a slag poking device on a central shaft.
One or more slag extractor II 11 is/are arranged between the slag water distributor 12 and the slag extractor I10, and the slag extractor II 11 is formed by installing a slag extractor on a central shaft.
The slag poking device is formed by combining one or more than two of a plurality of poking teeth, helical blades, poking sheets and poking rods, and the slag poking device rotates along with the central shaft to poke surrounding materials.
The slag water distributor 12 and the slag extractor II 11 are formed by mounting shifting teeth on a central shaft.
The first slag extractor 10 has three embodiments:
the first embodiment is as follows: helical blades 27 are also arranged on both sides of the central shaft, and a plurality of shifting teeth are arranged in the middle; the spiral blades 27 on the two sides have opposite rotating directions and convey materials to the center; the first structure is suitable for the case that the width of the discharge port 28 is smaller than the width of the notch of the upper opening groove type of the shell on the central axis of the upper opening groove type of the shell.
Example two: the slag extractor I10 is formed by installing a plurality of shifting teeth on a central shaft and is not provided with a helical blade; the second structure is suitable for the case that the discharge port 28 is on the central axis of the upper opening groove type casing and the width of the discharge port is larger than or equal to the width of the opening groove of the upper opening groove type casing.
Example three: all the spiral blades are arranged on the central shaft, and materials are conveyed to one side; the discharge port 28 is arranged on the side surface of the shell, and the structure is suitable for the third structure.
The shell 9 is a groove-shaped steel structural member, and can also be made into a groove-shaped structure by reinforced concrete.
Criss-cross steel clapboards 23 are arranged between the second filter screen 14 and the second filter screen 25 and between the second filter screen 25 and the bottom of the shell 9, a space between the second filter screen 14 and the second filter screen 25 and a space between the second filter screen 25 and the bottom of the shell 9 are divided into a plurality of lattices, and filter stones 13 are arranged in the lattices; holes 24 are arranged on the criss-cross steel partition plates, and the holes 24 are communicated with the exhaust pipe 15 outside the shell.
A plurality of front baffles 21 and rear baffles 22 which are vertically arranged are arranged on the second filter screen 14, the front baffles 21 are arranged on one side close to the feeding port 29, and the rear baffles 22 are arranged on one side close to the discharging port 28; the height of the front baffle 21 is higher than that of the rear baffle 22, and the front baffle 21 is provided with a groove 20.
The granulation equipment comprises various granulation treatment facilities, such as a granulation tower 18, which are connected with the feed inlet of the shell through the slag sluiceway 6; the width of the notch of the shell is larger than the width of the slag sluiceway 6 of the granulating equipment.
The slag treatment plant includes various slag treatment facilities, such as a bucket wheel slag extractor 3.
And a back washing system consisting of a water return pipeline and a valve is arranged at the bottom of the shell and is connected with a slag flushing pump station. The water return pipeline and the slag flushing pump station can be connected with heating and power generation facilities.
The bucket-wheel slag extractor is composed of a plurality of hoppers arranged along the circumference, the hoppers rotate around the circle center, and filter holes are formed in the hoppers.
Liquid slag in the production and smelting of a blast furnace or a submerged arc furnace enters a granulation tower, is granulated by high-pressure water to form a slag-water mixture, flows downwards along a slag flushing channel under the action of water flow, enters a water filter, the slag-water mixture filters a large part of water in the water filter, the filtered water enters a backwashing system and returns to a slag flushing pump station, and the high-pressure water is pumped out by a water pump of the slag flushing pump station to be used for granulating the slag; hot water of the back washing system and the slag flushing pump station can be used for heating and power generation;
the slag-water mixture after being concentrated in the water filter enters slag treatment equipment, the slag-water mixture continues to filter water in the slag treatment equipment, and slag after being filtered is transported to a designated place;
the water filter is periodically back flushed by gas and pressure water, so that the water permeability and the filtering performance of the water filter are ensured.
The utility model filters water through the water filter arranged between the granulating device and the slag treatment device, reduces the water quantity entering the slag treatment device, has good water filtering effect, improves the conveying capacity and efficiency of the slag treatment device, reduces the abrasion to the device and prolongs the service life of the device; the water quality is ensured, a wear-resistant pipeline and a slurry pump are not needed, the equipment investment and the failure rate are greatly reduced, and the residual hot water can be used for power generation and heating.
Claims (8)
1. A water filtering device after slag granulation in the smelting process of a blast furnace or a submerged arc furnace is characterized in that: comprises a shell (9), a filter screen (25) and a filter stone (13); the shell (9) is of an upper opening groove type, and a feeding port (29) and a discharging port (28) of the shell (9) are respectively connected with the granulating equipment and the slag processing equipment; at least one layer of filter screen (25) is arranged at the bottom of the shell (9), and filtering stones (13) are arranged on the filter screen (25); the number of the filter screens is multiple, and filtering stones are arranged among the filter screens; a waterproof slag accumulation propelling device is arranged in the shell (9), and comprises a first slag puller (10); the first slag extractor (10) is arranged close to the discharge hole (28), and the first slag extractor (10) is formed by installing a slag extractor on a central shaft.
2. The water filtering equipment for the granulated molten slag in the smelting process of the blast furnace or the submerged arc furnace as claimed in claim 1, wherein: the waterproof slag accumulation propelling device further comprises a slag water distributor (12), the slag water distributor (12) is arranged close to the feeding port (29), and the slag water distributor (12) is formed by installing a slag poking device on a central shaft.
3. The water filtering equipment for the granulated molten slag in the smelting process of the blast furnace or the submerged arc furnace as claimed in claim 2, wherein: one or more slag extractor II (11) are arranged between the slag water distributor (12) and the slag extractor I (10), and the slag extractor II (11) is formed by installing a slag extracting device on a central shaft.
4. The water filtering equipment for the granulated molten slag in the smelting process of the blast furnace or the submerged arc furnace as claimed in claim 1, wherein: the slag poking device is composed of one or more than two of a plurality of poking teeth, helical blades, poking sheets and poking rods.
5. The water filtering equipment for the granulated molten slag in the smelting process of the blast furnace or the submerged arc furnace as claimed in claim 2, wherein: the slag water distributor (12) and the slag extractor II (11) are formed by mounting shifting teeth on a central shaft.
6. The water filtering equipment for the granulated molten slag in the smelting process of the blast furnace or the submerged arc furnace as claimed in claim 1, wherein: the shell (9) is a groove-shaped steel structural member or a groove-shaped structure made of reinforced concrete.
7. The water filtering equipment for the granulated molten slag in the smelting process of the blast furnace or the submerged arc furnace as claimed in claim 1, wherein: two layers of filter screens are arranged, a second filter screen (14) is arranged on the bottom filter screen (25), and filtering stones are arranged between the second filter screen and the filter screens; criss-cross steel clapboards (23) are arranged between the second filter screen (14) and the second filter screen (25) and between the second filter screen (25) and the bottom of the shell (9), a space between the second filter screen (14) and the second filter screen (25) and a space between the second filter screen (25) and the bottom of the shell (9) are divided into a plurality of lattices, and filtering stones (13) are arranged in the lattices; holes (24) are arranged on the criss-cross steel partition plates, and the holes (24) are communicated with an exhaust pipe (15) outside the shell.
8. The water filtering equipment for the granulated molten slag in the smelting process of the blast furnace or the submerged arc furnace as claimed in claim 7, wherein: a plurality of front baffles (21) and rear baffles (22) which are vertically arranged are arranged on the second filter screen (14), the front baffles (21) are arranged on one side close to the feeding port (29), and the rear baffles (22) are arranged on one side close to the discharging port (28); the height of the front baffle (21) is higher than that of the rear baffle (22), and a groove (20) is formed in the front baffle (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921397302.1U CN210845528U (en) | 2019-08-27 | 2019-08-27 | Water filtering equipment after molten slag granulation in smelting process of blast furnace or submerged arc furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921397302.1U CN210845528U (en) | 2019-08-27 | 2019-08-27 | Water filtering equipment after molten slag granulation in smelting process of blast furnace or submerged arc furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210845528U true CN210845528U (en) | 2020-06-26 |
Family
ID=71294552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921397302.1U Expired - Fee Related CN210845528U (en) | 2019-08-27 | 2019-08-27 | Water filtering equipment after molten slag granulation in smelting process of blast furnace or submerged arc furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210845528U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112619250A (en) * | 2021-01-07 | 2021-04-09 | 戚晓芳 | Metal smelting blast furnace slag bottom filtration method filtration system |
-
2019
- 2019-08-27 CN CN201921397302.1U patent/CN210845528U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112619250A (en) * | 2021-01-07 | 2021-04-09 | 戚晓芳 | Metal smelting blast furnace slag bottom filtration method filtration system |
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| GR01 | Patent grant | ||
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Granted publication date: 20200626 |