CN110714105A - Long-life converter liquid steel slag retaining wall - Google Patents
Long-life converter liquid steel slag retaining wall Download PDFInfo
- Publication number
- CN110714105A CN110714105A CN201911039119.9A CN201911039119A CN110714105A CN 110714105 A CN110714105 A CN 110714105A CN 201911039119 A CN201911039119 A CN 201911039119A CN 110714105 A CN110714105 A CN 110714105A
- Authority
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- China
- Prior art keywords
- steel
- wall body
- rail
- slag
- reinforced concrete
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 125
- 239000010959 steel Substances 0.000 title claims abstract description 125
- 239000002893 slag Substances 0.000 title claims abstract description 60
- 239000007788 liquid Substances 0.000 title claims abstract description 16
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 37
- 229910001208 Crucible steel Inorganic materials 0.000 claims abstract description 32
- 239000004567 concrete Substances 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 15
- 229910001141 Ductile iron Inorganic materials 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 13
- 239000000126 substance Substances 0.000 abstract description 5
- 238000006703 hydration reaction Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000003628 erosive effect Effects 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 2
- 239000004540 pour-on Substances 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 230000000887 hydrating effect Effects 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005580 one pot reaction Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/08—Cooling slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/02—Physical or chemical treatment of slags
- C21B2400/022—Methods of cooling or quenching molten slag
- C21B2400/024—Methods of cooling or quenching molten slag with the direct use of steam or liquid coolants, e.g. water
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/066—Receptacle features where the slag is treated
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Revetment (AREA)
Abstract
A long-life liquid steel slag retaining wall of a converter belongs to the technical field of converter steel slag treatment facilities and is used for placing converter steel slag. The technical scheme is as follows: the wall body of reinforced concrete wall body encircles hot splashing slag pool, and polylith steel sheet built-in fitting is pour on one side wall body surface towards hot splashing slag pool of reinforced concrete wall body, and many steel rails encircle hot splashing slag pool order vertical arrangement along the wall body of reinforced concrete wall body, and the bottom surface of many steel rails respectively with the steel sheet built-in fitting welded connection on the wall body surface of reinforced concrete wall body, polylith cast steel sheet and connect respectively between adjacent steel rail. The invention has reasonable structure, has the comprehensive performances of water resistance, high temperature resistance and impact resistance, can endure the chemical erosion generated by the steel slag, the steam-water mixture and the hydration reaction substance of water and the steel slag at about 1000 ℃ for a long time, can bear the actions of knocking, bumping and colliding a wall body of a loader to a certain extent, can realize maintenance-free, has the service life not less than 15 years and improves the economic benefit of enterprises.
Description
Technical Field
The invention relates to a steel slag retaining wall of a hot splashing slag pool for placing converter steel slag, and belongs to the technical field of converter steel slag treatment facilities.
Background
The steel slag hot splashing process includes spraying water to steel slag at 200-1300 deg.c, utilizing afterheat to produce supersaturated steam, hydrating reaction with f-CaO and f-MgO, volume expansion and pulverization, CaO hydration volume expansion 97.8%, MgO hydration volume expansion 148%, and steel slag pulverization to separate steel from slag naturally.
The converter steel slag is transported to a steel slag hot splashing treatment line by a cross-over vehicle, a bridge crane lifts a slag pot to tip the hot-melt steel slag to a hot splashing slag pool, a small amount of water is sprayed for cooling after one pot is tipped each time, the steel slag is properly loosened, after the hot splashing pool is filled with the steel slag, water pipes on two sides of each hot splashing pool are opened to pour water and hot splashing, and the hot splashing water amount and time are carried out according to the regulation requirements. After the hot splashing of the steel slag is finished, the pulverized steel slag in the pool is grabbed and transported to a steel slag transportation dump truck by a loader and is pulled to a screening, crushing and magnetic separation production line.
Retaining walls are arranged on three sides of the hot splashing slag pool and are constructed by adopting C30 impervious heat-resistant concrete. In production and use, the concrete retaining wall is easy to damage due to the long-term action of high-temperature liquid steel slag and gas-water. In production and use, the concrete retaining wall cracks can appear at first, the reinforcing steel bar protective layer of the concrete retaining wall slowly falls off, the retaining wall becomes thinner and the strength is reduced gradually, and the retaining wall is required to be dismantled and rebuilt again in 3 to 5 years generally.
Disclosure of Invention
The invention aims to solve the technical problem of providing a long-life converter liquid steel slag retaining wall, which can endure the high temperature and chemical erosion of high-temperature steel slag for a long time, can bear the effects of knocking, bumping and colliding a wall body of a loader during working, has the double characteristics of impermeability, waterproofness, heat resistance and high strength, and can realize long service life and maintenance-free.
The technical scheme for solving the technical problems is as follows:
the utility model provides a converter liquid slag barricade of long-life, it includes concrete structure main part and steel protective structure, concrete structure main part is upright reinforced concrete wall body, reinforced concrete wall body's wall body encircles hot application slag bath, reinforced concrete wall body's lower extreme has horizontal base, horizontal base is connected with the bottom of the pool in hot application slag bath, steel protective structure includes the steel sheet built-in fitting, the rail, cast the steel sheet, polylith steel sheet built-in fitting is pour on one side wall surface towards hot application slag bath at reinforced concrete wall body, many rails encircle hot application slag bath order vertical arrangement along reinforced concrete wall body's wall body, the bottom surface of many rails respectively with reinforced concrete wall body's wall surface steel sheet built-in fitting welded connection, polylith cast the steel sheet and connect between adjacent rail respectively.
According to the long-life converter liquid steel slag retaining wall, the plurality of steel plate embedded parts are arranged discontinuously in the longitudinal and transverse directions on the surface of the wall body of the reinforced concrete wall, the transverse distance of the steel plate embedded parts is not more than 1 meter, and the longitudinal distance of the steel plate embedded parts is not more than 0.6 meter.
According to the long-life converter liquid steel slag retaining wall, the steel plate embedded part and the steel rail are welded through the pressing plate, the lower portion of the pressing plate is in welded connection with the steel plate embedded part, the upper portion of the pressing plate is pressed on the surface of the rail seat on the lower portion of the steel rail, and the pressing plate is in welded connection with the steel rail.
Above-mentioned long-life converter liquid slag barricade, the below welding position piece of rail upper portion rail face, the locating piece is along the length direction of rail, and the locating piece is for leading to long and being interrupted the welding on rail length direction, and the locating piece is located the both sides of the rail body respectively, and rail body both sides are respectively with the perpendicular welding in side of two locating pieces, and the upper surface of locating piece is parallel with rail face lower surface and gapped, and the clearance and the cast steel plate thickness phase-match of locating piece and rail face below cast steel plate, and the cast steel plate is inserted in the clearance of locating piece and rail face lower surface.
According to the long-life converter liquid steel slag retaining wall, the cast steel plate is a nodular cast iron steel plate, the width of the cast steel plate is matched with the distance between two adjacent steel rails of the wall body of the reinforced concrete wall body, the length of the cast steel plate is matched with the height of the wall body of the reinforced concrete wall body, and the thickness of the cast steel plate is 20-30 mm.
The invention has the beneficial effects that:
the converter liquid steel slag retaining wall body adopts a concrete-steel composite structure, on one hand, the concrete structure main body is an upright reinforced concrete wall body and has high strength, impermeability and water resistance, and on the other hand, the steel protection structure consists of steel rails and ductile cast iron steel plates and has high temperature resistance, collision resistance and impact resistance, and the steel slag retaining wall has reliable overall performance, long service life and is maintenance-free.
The concrete steel composite slag-stopping wall has a reasonable structure, has comprehensive performances of water resistance, high temperature resistance and impact resistance, can withstand chemical erosion caused by hydration reaction substances of the steel slag, steam-water mixture and water and the steel slag at about 1000 ℃ for a long time, can bear the effects of knocking, bumping and colliding of a loader on the wall to a certain extent, can realize that the one-time investment of the concrete steel composite slag-stopping wall is maintenance-free and has a long service life which is not less than 15 years, and improves the economic benefit of enterprises.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a partial view of FIG. 1;
fig. 3 is a schematic view of the state of use of the present invention.
The figures are labeled as follows: the steel reinforced concrete hot pouring device comprises a reinforced concrete wall body 1, a horizontal base 2, a steel plate embedded part 3, a steel rail 4, a cast steel plate 5, a pressing plate 6, a positioning block 7, a hot splashing slag pool 8, a pool bottom 9 and steel slag 10.
Detailed Description
The concrete structure comprises a concrete structure main body and a steel protection structure, wherein the concrete structure main body comprises a reinforced concrete wall body 1 and a horizontal base 2, and the steel protection structure comprises a steel plate embedded part 3, a steel rail 4, a cast steel plate 5, a pressing plate 6 and a positioning block 7.
The figure shows that a reinforced concrete wall body 1 is vertical, the wall body of the reinforced concrete wall body 1 surrounds a hot splashing slag pool 8, a horizontal base 2 is arranged at the lower end of the reinforced concrete wall body 1, and the horizontal base 2 is connected with the pool bottom 9 of the hot splashing slag pool 8.
The drawing shows that the steel protection structure is formed by pouring a plurality of steel plate embedded parts 3 on the surface of a wall body wall facing a hot splashing slag pool 8 of a reinforced concrete wall body 1, the steel plate embedded parts 3 are arranged discontinuously in the longitudinal and transverse directions of the wall body wall surface of the reinforced concrete wall body 1, the transverse distance between the steel plate embedded parts 3 is not more than 1 meter, and the longitudinal distance is not more than 0.6 meter.
The figure shows that a plurality of steel rails 4 are vertically arranged around a hot slag splashing pool 8 along the wall body of the reinforced concrete wall body 1 in sequence. The section of the steel rail 4 is I-shaped, the upper part of the I-shaped is a rail surface, the middle part is a rail body, and the lower part is a rail seat. And when the steel rails 4 are connected with the steel plate embedded parts 3 on the surface of the wall body of the reinforced concrete wall body 1, the pressing plates 6 are adopted for welding connection. The lower part of the pressing plate 6 is welded with the steel plate embedded part 3, the upper part of the pressing plate 6 is pressed on the surface of a rail seat at the lower part of the steel rail 4, and the pressing plate 6 is welded with the rail seat of the steel rail 4. The selection range of the steel rail 4 is QU70-QU120 hoisting steel rail
The connection of the cast steel plate 5 to the rail 4 is shown in the figure in the form of a plug-in connection. And a positioning block 7 is welded below the upper rail surface of the steel rail 4, the positioning block 7 is welded along the length direction of the steel rail 4, and the positioning block 7 is welded in a full-length and discontinuous mode in the length direction of the steel rail 4. Since the steel casting plates 5 are attached to both sides of the rail 4, the positioning blocks 7 need to be welded to both sides of the rail 4. The positioning blocks 7 are respectively positioned on two sides of the rail body of the steel rail 4, and two sides of the rail body of the steel rail 4 are respectively and vertically welded with the side surfaces of the two positioning blocks 7. In order to place the cast steel plate 5 between the positioning block 7 and the rail surface of the steel rail 4, the upper surface of the positioning block 7 is parallel to the lower surface of the rail surface of the steel rail 4, a gap is reserved between the positioning block 7 and the lower surface of the rail surface of the steel rail 4, the gap between the positioning block 7 and the lower surface of the rail surface of the steel rail 4 is matched with the thickness of the cast steel plate 5, the cast steel plate 5 is inserted into the gap between the positioning block 7 and the lower surface of the rail surface of. The advantage of the splicing connection is that the cast steel plates 5 can be conveniently taken out from between the rails 4 after long-term corrosion and impact damage, and replaced by new cast steel plates 5.
The figure shows that the cast steel plate 5 is a nodular cast iron steel plate, the width of the cast steel plate 5 is matched with the distance between two adjacent steel rails 4 of the wall body of the reinforced concrete wall body 1, the length of the cast steel plate 5 is matched with the height of the wall body of the reinforced concrete wall body 1, and the thickness of the cast steel plate 5 is 20-30 mm.
One embodiment of the invention is as follows:
the reinforced concrete wall 1 is made of C30 impervious concrete, the height of the reinforced concrete wall 1 is 6m, the thickness of the lower end is 0.8m, and the thickness of the upper end is 0.4 m;
the width of the horizontal base 2 is 4.5m, and the height is 0.7 m;
the length of the steel plate embedded part 3 is 600mm, the width is 300mm, and the thickness is 20 mm;
the steel rail 4 is a U71Mn steel rail;
the length of the pressing plate 6 is 150mm, the width is 40mm, and the thickness is 20 mm;
the cast steel plate 5 is a nodular cast iron steel plate, the width of the cast steel plate is 1000mm, the thickness of the cast steel plate is 30mm, and the length of the cast steel plate is set along the whole height of the wall body;
the positioning block 7 is 600mm long, 30mm wide and 20mm thick.
Claims (5)
1. The utility model provides a converter liquid steel slag barricade of long-life which characterized in that: the concrete structure comprises a concrete structure main body and a steel protection structure, wherein the concrete structure main body is an upright reinforced concrete wall body (1), the wall body of the reinforced concrete wall body (2) surrounds a hot splashing slag pool (8), a horizontal base (2) is arranged at the lower end of the reinforced concrete wall body (1), the horizontal base (2) is connected with the pool bottom (9) of the hot splashing slag pool (8), the steel protection structure comprises a steel plate embedded part (3) and a steel rail (4), cast steel plate (5), one side wall surface towards hot splashing slag bath (8) of reinforced concrete wall body (1) is pour in polylith steel sheet built-in fitting (3), many rail (4) encircle hot splashing slag bath (8) order vertical arrangement along the wall body of reinforced concrete wall body (1), the bottom surface of many rail (4) respectively with steel sheet built-in fitting (3) welded connection on the wall body surface of reinforced concrete wall body (1), polylith cast steel sheet (5) is connected respectively between adjacent rail (4).
2. The long-life retaining wall made of liquid steel slag of converter according to claim 1, wherein: the steel plate embedded parts (3) are discontinuously arranged on the surface of the wall body wall of the reinforced concrete wall body (1) in the longitudinal and transverse directions, the transverse distance between every two adjacent steel plate embedded parts (3) is not more than 1 meter, and the longitudinal distance is not more than 0.6 meter.
3. The long-life retaining wall made of liquid steel slag of converter according to claim 1, wherein: the steel plate embedded part (3) and the steel rail (4) are welded through the pressing plate (6), the lower portion of the pressing plate (6) is in welded connection with the steel plate embedded part (3), the upper portion of the pressing plate (6) is pressed on the surface of a rail seat on the lower portion of the steel rail (4), and the pressing plate (6) is in welded connection with the steel rail (4).
4. The long-life retaining wall made of liquid steel slag of converter according to claim 1, wherein: the steel rail is characterized in that positioning blocks (7) are welded below the upper rail surface of the steel rail (4), the positioning blocks (7) are arranged along the length direction of the steel rail (4), the positioning blocks (7) are welded on the length direction of the steel rail (4) in a full-length mode and in a discontinuous mode, the positioning blocks (7) are respectively arranged on two sides of the rail body of the steel rail (4), two sides of the rail body of the steel rail (4) are respectively welded with the side faces of the two positioning blocks (7) in a perpendicular mode, the upper surface of the positioning blocks (7) is parallel to the lower surface of the rail surface of the steel rail (4) and has a gap, the gap between the positioning blocks (7) and the lower surface of the rail surface of the steel rail (4) is matched with the thickness of the cast steel plate (5), the cast steel plate (5) is inserted into the gap between.
5. The long-life retaining wall made of liquid steel slag of converter according to claim 1, wherein: the cast steel plate (5) is a nodular cast iron steel plate, the width of the cast steel plate (5) is matched with the distance between two adjacent steel rails (4) of the wall body of the reinforced concrete wall body (1), the length of the cast steel plate (5) is matched with the height of the wall body of the reinforced concrete wall body (1), and the thickness of the cast steel plate (5) is 20-30 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911039119.9A CN110714105B (en) | 2019-10-29 | 2019-10-29 | Liquid steel slag retaining wall of converter with long service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911039119.9A CN110714105B (en) | 2019-10-29 | 2019-10-29 | Liquid steel slag retaining wall of converter with long service life |
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| Publication Number | Publication Date |
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| CN110714105A true CN110714105A (en) | 2020-01-21 |
| CN110714105B CN110714105B (en) | 2024-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911039119.9A Active CN110714105B (en) | 2019-10-29 | 2019-10-29 | Liquid steel slag retaining wall of converter with long service life |
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| Country | Link |
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| CN (1) | CN110714105B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115786604A (en) * | 2022-11-28 | 2023-03-14 | 钢城集团凉山瑞海实业有限公司 | Long-life protection method for slag-turning line counterfort retaining wall |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201321463Y (en) * | 2008-12-12 | 2009-10-07 | 上海梅山钢铁股份有限公司 | High-temperature steel slag treating pond |
| CN201785405U (en) * | 2010-09-03 | 2011-04-06 | 鞍钢集团工程技术有限公司 | Steel slag hot-integrating pool |
| CN202107709U (en) * | 2011-04-29 | 2012-01-11 | 四川省达州钢铁集团有限责任公司 | Hot splashing slag box system |
| CN206052060U (en) * | 2016-08-30 | 2017-03-29 | 中冶南方工程技术有限公司 | The heat-insulated hot splashing slag railway carriage or compartment of overhead type |
| KR101774887B1 (en) * | 2016-10-06 | 2017-09-05 | 유한회사 강남이앤씨 | Cutoff wall structure of continuous wall type with variable steel plate, and construction method of cutoff wall of temporary facility using the same |
| CN211112058U (en) * | 2019-10-29 | 2020-07-28 | 宣化钢铁集团有限责任公司 | Long-life converter liquid steel slag retaining wall |
-
2019
- 2019-10-29 CN CN201911039119.9A patent/CN110714105B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201321463Y (en) * | 2008-12-12 | 2009-10-07 | 上海梅山钢铁股份有限公司 | High-temperature steel slag treating pond |
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| CN202107709U (en) * | 2011-04-29 | 2012-01-11 | 四川省达州钢铁集团有限责任公司 | Hot splashing slag box system |
| CN206052060U (en) * | 2016-08-30 | 2017-03-29 | 中冶南方工程技术有限公司 | The heat-insulated hot splashing slag railway carriage or compartment of overhead type |
| KR101774887B1 (en) * | 2016-10-06 | 2017-09-05 | 유한회사 강남이앤씨 | Cutoff wall structure of continuous wall type with variable steel plate, and construction method of cutoff wall of temporary facility using the same |
| CN211112058U (en) * | 2019-10-29 | 2020-07-28 | 宣化钢铁集团有限责任公司 | Long-life converter liquid steel slag retaining wall |
Non-Patent Citations (2)
| Title |
|---|
| 李献军;王晨;李勇;: "浅谈热焖池设计与施工", 四川建材, no. 05, pages 159 - 160 * |
| 杨伦光;: "宁钢炼钢热泼渣箱改造加固方案优化及实施", 浙江冶金, no. 04 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115786604A (en) * | 2022-11-28 | 2023-03-14 | 钢城集团凉山瑞海实业有限公司 | Long-life protection method for slag-turning line counterfort retaining wall |
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| CN110714105B (en) | 2024-03-01 |
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