CN221108976U - Screen framework protection device for raw material fed into blast furnace - Google Patents
Screen framework protection device for raw material fed into blast furnace Download PDFInfo
- Publication number
- CN221108976U CN221108976U CN202322823743.6U CN202322823743U CN221108976U CN 221108976 U CN221108976 U CN 221108976U CN 202322823743 U CN202322823743 U CN 202322823743U CN 221108976 U CN221108976 U CN 221108976U
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- Prior art keywords
- shaped steel
- blast furnace
- screen
- raw material
- notch
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- 239000002994 raw material Substances 0.000 title claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 58
- 239000010959 steel Substances 0.000 claims abstract description 58
- 239000000919 ceramic Substances 0.000 claims abstract description 29
- 239000004744 fabric Substances 0.000 claims abstract description 10
- 238000003466 welding Methods 0.000 claims abstract description 5
- 230000001012 protector Effects 0.000 claims description 2
- 238000004080 punching Methods 0.000 claims 2
- 238000005299 abrasion Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000009991 scouring Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract description 2
- 238000011010 flushing procedure Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000617 Mangalloy Inorganic materials 0.000 description 1
- 241001417490 Sillaginidae Species 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003211 malignant effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Blast Furnaces (AREA)
Abstract
The utility model relates to a screen framework protection device for raw materials fed into a blast furnace, and belongs to the technical field of blast furnace production equipment in the metallurgical industry. The technical proposal is as follows: contain H shaped steel (1), ceramic wear-resisting piece and screen cloth skeleton (8), screen cloth skeleton (8) are the rectangular frame that is in the same place by a plurality of square steel transverse and vertical welding, all fixes an H shaped steel (1) on every square steel, the last notch of H shaped steel (1) is the raw materials of screen cloth skeleton (8) and dashes the face, pastes on the raw materials of screen cloth skeleton (8) and has ceramic wear-resisting piece, and the lower notch of H shaped steel (1) is ridden on the square steel, and two sides of notch are in the same place under H shaped steel (1) through bolt (7). The beneficial effects of the utility model are as follows: can play a protective role on the screen framework of the raw material fed into the furnace of the blast furnace, reduce the scouring abrasion of the raw material fed into the furnace of the blast furnace on the screen framework and prolong the service life.
Description
Technical Field
The utility model relates to a screen framework protection device for raw materials fed into a blast furnace, and belongs to the technical field of blast furnace production equipment in the metallurgical industry.
Background
The transportation link of blast furnace smelting raw materials is the necessary stage of guaranteeing normal production of blast furnace, combines conveying equipment such as belt, feed bin, swift current mouth, skip, goes into the stove through blast furnace charging bucket, choke and smelts, in the blast furnace charging system, in order to prevent in the transportation big piece raw materials card swift current mouth and blast furnace inside center choke etc. according to blast furnace pan feeding choke diameter dimension proportion, specially designed is in the feed bin, the certain size of installation such as in the production of upper hopper: 300MM-400MM square steel plate grid mesh ensures that large raw materials are not fed into a bin and a hopper, and ensures smooth blanking of a central throat inside a blast furnace, thereby ensuring normal production. Because the blast furnace is operated for 24 hours, a large amount of raw materials are worn and scoured on a steel grid mesh, the steel plate grid mesh framework has limited wear resistance, the worn frameworks are required to be thoroughly repaired in about 3-5 months according to different scour positions and materials, the worn frameworks are cut off and welded one by one, the service period is not consistent with the fixed repair period of the blast furnace, the service period is short, the repair is required to be carried out by local shutdown, the workload is large, the overhaul time is long, if the overhaul is not timely, the blocking of a large raw material mouth is extremely easy to cause, the feeding is influenced, and if the blocking is blocked into a central throat blanking hole in the blast furnace, the embarrassing situation of forced damping down is caused, and the normal production of the blast furnace is directly influenced. For example: 2000m, the blast furnace roof receives hopper comb net, its hopper comb net skeleton is by a plurality of 60MM square steel, field word check combination welding mode, the length of a side is about 350MM, according to the blast furnace output about 5000 tons every day, the comb net is washed the ton volume about 10000 tons every day, wear and tear violently to the comb net skeleton, cause the comb net skeleton wearing and tearing to disappear, fracture, drop, lost the effect of granularity screening, massive raw materials card very easily in the central throat of about 600MM of blast furnace inside diameter, cause the blast furnace to be unable to feed, forced the malignant accident of damping down.
Disclosure of utility model
The utility model aims to provide a screen framework protecting device for raw materials fed into a blast furnace, which can protect the screen framework of the raw materials fed into the blast furnace, reduce the scouring abrasion of the raw materials fed into the blast furnace on the screen framework, prolong the service life and solve the problems in the background technology.
The technical scheme of the utility model is as follows:
The utility model provides a blast furnace raw materials screen cloth skeleton protector, contains H shaped steel, ceramic wear-resisting piece and screen cloth skeleton, the screen cloth skeleton is the rectangular frame that is in the same place by a plurality of square steel transverse and vertical welding, all fixes an H shaped steel on every square steel, the last notch of H shaped steel is the raw materials of screen cloth skeleton and dashes the face, pastes on the raw materials of screen cloth skeleton dashes the face and has ceramic wear-resisting piece.
The lower notch of the H-shaped steel rides on the square steel, and two side faces of the lower notch of the H-shaped steel are connected together through bolts.
The ceramic wear-resistant block I is stuck to the upper horizontal plane on the inner side of the notch on the H-shaped steel, the ceramic wear-resistant block IV is stuck to the vertical plane on the inner side of the notch on the H-shaped steel, the ceramic wear-resistant block III is stuck to the horizontal plane on the top of the notch on the H-shaped steel, and the ceramic wear-resistant block II is stuck to the vertical plane on the outer side of the H-shaped steel.
The width of the H-shaped steel is matched with the size of square steel in the screen framework.
The beneficial effects of the utility model are as follows: can play a protective role on the screen framework of the raw material fed into the furnace of the blast furnace, reduce the scouring abrasion of the raw material fed into the furnace of the blast furnace on the screen framework and prolong the service life.
Drawings
FIG. 1 is a front view of the present utility model;
FIG. 2 is a left side view of the present utility model;
FIG. 3 is a schematic view of the installation of the present utility model;
in the figure: h-shaped steel 1, a first ceramic wear-resistant block 2, a second ceramic wear-resistant block 3, a third ceramic wear-resistant block 4, a fourth ceramic wear-resistant block 5, a bolt hole 6, a bolt 7 and a screen framework 8.
Detailed Description
The utility model is further illustrated by way of example with reference to the accompanying drawings.
Referring to figures 1, 2 and 3, the blast furnace raw material screen framework protection device comprises H-shaped steel 1, ceramic wear-resistant blocks and a screen framework 8, wherein the screen framework 8 is a rectangular frame formed by horizontally and vertically welding a plurality of square steels, each square steel is fixedly provided with an H-shaped steel 1, an upper notch of the H-shaped steel 1 is a raw material flushing surface of the screen framework 8, and the ceramic wear-resistant blocks are adhered to the raw material flushing surface of the screen framework 8.
In this embodiment, referring to fig. 1 and 2, the H-shaped steel is welded by steel plates, a certain thick ceramic block is stuck inside and outside an upper notch of the H-shaped steel and on the side surface of the H-shaped steel, and the ceramic block is used as a raw material flushing surface, that is, a ceramic abrasion-resistant block one 2 is stuck on the inner side of the H-shaped steel 1 in a horizontal plane, a ceramic abrasion-resistant block four 5 is stuck on the inner side vertical plane of the H-shaped steel 1, a ceramic abrasion-resistant block two 3 is stuck on the outer side vertical plane of the H-shaped steel 1, and a ceramic abrasion-resistant block three 4 is stuck on the top horizontal plane of the H-shaped steel 1, so that not only the flushing resistance of ceramics is utilized, but also the abrasion resistance of the material in the notch is combined.
Referring to fig. 3, during installation, the lower notch of each H-shaped steel is sleeved on the grid framework 8, and two opposite faces of the lower notch of the H-shaped steel are connected by bolts 7, so that the combined block is prevented from tilting, overturning and falling off on the framework, as shown in fig. 3.
By adopting the utility model, the grate net framework is effectively protected, the Rockwell hardness of the ceramic block is HRA80-90, which is just inferior to that of diamond, far super wear-resistant steel and stainless steel, the wear resistance is equivalent to 266 times of manganese steel, the density of cast iron is 171.5 times, and the density is 3.6-3.9/cubic centimeter, which is only half of that of steel, thereby greatly reducing the load of equipment, prolonging the service life of the equipment, ensuring the normal production of a blast furnace, optimizing the overhaul scheme and saving overhaul resources.
Claims (4)
1. A blast furnace raw materials screen cloth skeleton protector that goes into stove, its characterized in that: the novel ceramic abrasive-resistant screen comprises H-shaped steel (1), ceramic abrasive-resistant blocks and a screen framework (8), wherein the screen framework (8) is a rectangular frame formed by welding a plurality of square steels together transversely and vertically, each square steel is fixedly provided with one H-shaped steel (1), an upper notch of the H-shaped steel (1) is a raw material punching surface of the screen framework (8), and the ceramic abrasive-resistant blocks are adhered to the raw material punching surface of the screen framework (8).
2. The blast furnace charging raw material screen frame protection device according to claim 1, wherein: the lower notch of the H-shaped steel (1) is ridden on square steel, and two side surfaces of the lower notch of the H-shaped steel (1) are connected together through bolts (7).
3. The blast furnace charging raw material screen frame protection device according to claim 1, wherein: the ceramic wear-resistant block I (2) is adhered to the inner side upper horizontal plane of the notch on the H-shaped steel (1), the ceramic wear-resistant block IV (5) is adhered to the inner side vertical plane of the notch on the H-shaped steel (1), the ceramic wear-resistant block III (4) is adhered to the top horizontal plane of the notch on the H-shaped steel (1), and the ceramic wear-resistant block II (3) is adhered to the outer side vertical plane of the H-shaped steel (1).
4. The blast furnace charging raw material screen frame protection device according to claim 1, wherein: the width of the H-shaped steel (1) is matched with the size of square steel in the screen framework (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322823743.6U CN221108976U (en) | 2023-10-20 | 2023-10-20 | Screen framework protection device for raw material fed into blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322823743.6U CN221108976U (en) | 2023-10-20 | 2023-10-20 | Screen framework protection device for raw material fed into blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221108976U true CN221108976U (en) | 2024-06-11 |
Family
ID=91342607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322823743.6U Active CN221108976U (en) | 2023-10-20 | 2023-10-20 | Screen framework protection device for raw material fed into blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221108976U (en) |
-
2023
- 2023-10-20 CN CN202322823743.6U patent/CN221108976U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |