CN112195303A - Process layout structure of steelmaking workshop with horizontal continuous feeding electric furnace - Google Patents
Process layout structure of steelmaking workshop with horizontal continuous feeding electric furnace Download PDFInfo
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- CN112195303A CN112195303A CN202011186418.8A CN202011186418A CN112195303A CN 112195303 A CN112195303 A CN 112195303A CN 202011186418 A CN202011186418 A CN 202011186418A CN 112195303 A CN112195303 A CN 112195303A
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 230000008569 process Effects 0.000 title claims abstract description 43
- 238000009628 steelmaking Methods 0.000 title claims abstract description 39
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 138
- 239000010959 steel Substances 0.000 claims abstract description 138
- 238000007670 refining Methods 0.000 claims abstract description 68
- 239000002994 raw material Substances 0.000 claims abstract description 22
- 238000003860 storage Methods 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 238000010791 quenching Methods 0.000 claims description 4
- 230000008439 repair process Effects 0.000 claims description 4
- 239000002918 waste heat Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 239000002893 slag Substances 0.000 abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 32
- 229910052742 iron Inorganic materials 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
- C21C5/527—Charging of the electric furnace
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
- C21C5/5294—General arrangement or layout of the electric melt shop
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/56—Manufacture of steel by other methods
- C21C5/562—Manufacture of steel by other methods starting from scrap
- C21C5/565—Preheating of scrap
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
本发明为一种含有水平连续加料电炉的炼钢车间工艺布置结构，包括，至少一座水平连续加料电炉，包括水平连续加料段、预热段和电炉本体；废钢跨，用于废钢分类和堆存，废钢跨内设置多个废钢存放区，水平连续加料段位于废钢跨；废钢预热跨，预热段位于废钢预热跨；电炉跨，电炉本体位于电炉跨；原料跨，原料跨内设置上投料设施；精炼跨，设置精炼炉，上投料设施用于为电炉本体和精炼炉上投料。本发明保证废钢、钢水、钢渣物流顺畅，工艺顺行，布局紧凑合理，占地面积小，是一种非常合理的工艺布置。
The invention is a process layout structure of a steelmaking workshop containing a horizontal continuous feeding electric furnace, including at least one horizontal continuous feeding electric furnace, including a horizontal continuous feeding section, a preheating section and an electric furnace body; , there are multiple scrap storage areas in the scrap span, and the horizontal continuous feeding section is located in the scrap span; the scrap preheat span, the preheating section is located in the scrap preheat span; the electric furnace span, the electric furnace body is located in the electric furnace span; the raw material span, the raw material span is set on the upper Feeding facility; Refining span, setting refining furnace, upper feeding facility is used for feeding the electric furnace body and refining furnace. The invention ensures smooth flow of scrap steel, molten steel and steel slag, smooth process flow, compact and reasonable layout, small footprint, and is a very reasonable process layout.
Description
Technical Field
The invention relates to the technical field of steel making, in particular to a process arrangement structure of a steel making workshop with a horizontal continuous charging electric furnace.
Background
With the implementation of a new environmental protection method, the emission standard requirements of main pollutants are more strict, and a new challenge is provided for the survival and development of iron and steel enterprises. Compared with long-process converter steelmaking by taking molten iron as a raw material, the short-process electric furnace steelmaking by taking scrap steel as a raw material has obvious advantages of energy conservation and emission reduction. According to calculation, compared with a long-flow process, the short-flow process can reduce the consumption of 1.7t of concentrate per ton of steel, save 75% of energy and 40% of fresh water, and reduce the emission of 86% of waste gas, 76% of waste water and 72% of waste residues. Therefore, the development of the electric furnace short-flow steelmaking production process taking scrap steel as a main raw material is generally emphasized in all countries in the world.
At present, the electric furnace steelmaking technology has wide market prospect in China, is encouraged by the nation, and particularly becomes a new favorite in the industry for scrap steel preheating type electric furnace technology which is characterized by feeding without opening a cover and smelting in a flat molten pool. In the scrap steel preheating electric furnace, a horizontal continuous charging electric furnace with mature technology, reliable equipment operation and relatively low investment is favored by domestic steel.
Compared with a common charging basket top charging electric furnace, the horizontal continuous charging electric furnace is limited in arrangement mode of a workshop due to the fact that the horizontal continuous charging section and the preheating section are long, the workshop with the horizontal continuous charging electric furnace is large in occupied area due to the traditional arrangement mode, particularly the workshop with two horizontal continuous charging electric furnaces is large in occupied area, and many iron and steel enterprises are difficult to select the horizontal continuous charging electric furnace due to the fact that the workshop with the two horizontal continuous charging electric furnaces is not large in enough area.
Therefore, the inventor provides a process arrangement structure of a steel-making workshop with a horizontal continuous charging electric furnace by virtue of experience and practice of related industries for many years, so as to overcome the defects in the prior art.
Disclosure of Invention
The invention aims to provide a process arrangement structure of a steel-making workshop with a horizontal continuous charging electric furnace, which ensures smooth logistics of scrap steel, molten steel and steel slag, smooth process, compact and reasonable layout and small occupied area, and is a very reasonable process arrangement.
The object of the invention is achieved by a process arrangement for a steelmaking plant with a horizontal continuous-feed electric furnace, comprising,
the horizontal continuous charging electric furnace comprises a horizontal continuous charging section, a preheating section and an electric furnace body which are sequentially connected in the width-spanning direction;
the scrap steel bay is used for classifying and stacking scrap steel, a plurality of scrap steel storage areas are arranged in the scrap steel bay, a scrap steel transportation channel extending along the width direction is arranged between every two adjacent scrap steel storage areas, and the horizontal continuous feeding section is positioned in the scrap steel bay;
the scrap steel preheating span is arranged adjacent to the scrap steel span, and the preheating section is positioned on the scrap steel preheating span;
the electric furnace span is arranged adjacent to the scrap steel preheating span, and the electric furnace body is positioned on the electric furnace span;
the raw material span is arranged adjacent to the electric furnace span, and an upper feeding facility is arranged in the raw material span along the span length direction;
and the refining span is arranged adjacent to the raw material span, a refining furnace is arranged in the refining span and corresponds to the electric furnace body, and the upper feeding facility is used for feeding materials to the electric furnace body and the refining furnace.
In a preferred embodiment of the present invention, the number of the horizontal continuous charging electric furnaces is two, and the two horizontal continuous charging electric furnaces are arranged in parallel at intervals along the length-spanning direction.
In a preferred embodiment of the present invention, the scrap steel bay includes a scrap steel bay and a scrap steel bay which are adjacently disposed in a bay width direction, each of the scrap steel transport passages is disposed to penetrate through the scrap steel bay and the scrap steel bay, and the horizontal continuous feeding section is disposed in the scrap steel bay and the scrap steel bay.
In a preferred embodiment of the present invention, a preheating zone transportation channel communicated with the scrap transportation channel is disposed on a wide side of the scrap preheating bay, and the preheating zone transportation channel extends along a length direction of the bay.
In a preferred embodiment of the present invention, a combustion settling chamber adjacent to the preheating section is further disposed in the scrap preheating bay, and a waste heat boiler or a quench tower is disposed on a side of the combustion settling chamber away from the preheating section.
In a preferred embodiment of the invention, the outlet of the electric furnace body is communicated with an electric furnace steel outlet wire, and the electric furnace steel outlet wire extends along the length-spanning direction.
In a preferred embodiment of the invention, an electric furnace tipping and iron-charging facility is arranged on one side of the electric furnace body in the electric furnace span, and a hot metal ladle pouring and storing facility is arranged on one side of the electric furnace tipping and iron-charging facility far away from the electric furnace body.
In a preferred embodiment of the present invention, an electric furnace transformer building and a finery transformer building are further disposed in the raw material bay, the electric furnace body is electrically connected to the electric furnace transformer building, and the finery is electrically connected to the finery transformer building.
In a preferred embodiment of the present invention, the refining furnace is a ladle refining furnace, ladle car transport lines are respectively disposed on both sides of the refining furnace in the span-width direction, and one end of the ladle car transport line can be communicated with an outlet of the electric furnace body.
In a preferred embodiment of the invention, the refining bay is also provided with ladle hot repair facilities.
In a preferred embodiment of the invention, a vacuum refining furnace is further arranged in the refining span.
In a preferred embodiment of the present invention, the steelmaking shop process arrangement including a horizontal continuous charging electric furnace further includes a ladle passing-through transport line, at least one, provided between the refining span and the electric furnace span, for passing-through transport of heavy or empty ladles between the electric furnace span and the refining span.
From the above, the steelmaking workshop process arrangement structure containing the horizontal continuous charging electric furnace provided by the invention has the following beneficial effects:
according to the steelmaking workshop process arrangement structure containing the horizontal continuous feeding electric furnace, the electric furnace span where the electric furnace body of the horizontal continuous feeding electric furnace is located in the middle of the workshop, the scrap steel preheating span and the scrap steel span are arranged on one side, and the raw material span and the refining span are arranged on the other side, so that smooth logistics of the scrap steel, the molten steel and the steel slag can be ensured, the process is smooth, the layout is compact and reasonable, the process arrangement structure occupies a small area, the arrangement requirements of two or more horizontal continuous feeding electric furnaces can be met, and the popularization of the short-flow steelmaking production process of the electric furnace is facilitated.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention.
Wherein:
FIG. 1: is a schematic diagram of a steelmaking shop process layout structure with a horizontal continuous charging electric furnace according to the present invention.
In the figure:
100. a steel-making workshop process arrangement structure comprising a horizontal continuous charging electric furnace;
1. a horizontal continuous charging electric furnace;
11. a horizontal continuous feeding section; 12. a preheating section; 13. an electric furnace body; 131. discharging a steel wire from the electric furnace;
2. a scrap steel bay;
21. a scrap steel storage area; 22. a scrap steel transport channel; 23. one span of scrap steel; 24. secondary span of scrap steel;
3. preheating scrap steel;
31. a preheating zone transport corridor; 32. a combustion settling chamber; 33. a waste heat boiler; 34. a quench tower;
4. spanning an electric furnace;
41. tipping an electric furnace and charging iron; 42. a hot metal ladle back-filling and storing facility;
5. spanning raw materials;
51. feeding facilities; 52. an electric furnace transformer building; 53. a finery transformer building;
6. refining;
61. a refining furnace; 62. a buggy ladle transport line; 63. a ladle hot repair facility; 64. a vacuum refining furnace;
7. the ladle crosses the transport line.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
The specific embodiments of the present invention described herein are for the purpose of illustration only and are not to be construed as limiting the invention in any way. Any possible variations based on the present invention may be conceived by the skilled person in the light of the teachings of the present invention, and these should be considered to fall within the scope of the present invention. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, indirect connections through intermediaries, and the like. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, the present invention provides a steelmaking shop process arrangement 100 including a horizontal continuous-feed electric furnace, including,
at least one horizontal continuous charging electric furnace 1, in the present embodiment, the number of the horizontal continuous charging electric furnaces 1 is two, and the two horizontal continuous charging electric furnaces 1 are arranged in parallel at intervals along the length-spanning direction; the horizontal continuous charging electric furnace 1 comprises a horizontal continuous charging section 11, a preheating section 12 and an electric furnace body 13 which are connected in sequence along the width-spanning direction;
the scrap steel bay 2 is used for classifying and stacking scrap steel, a plurality of scrap steel storage areas 21 are arranged in the scrap steel bay 2, a scrap steel transportation channel 22 extending in the width direction is arranged between every two adjacent scrap steel storage areas 21, and the horizontal continuous feeding section 11 is positioned on the scrap steel bay 2;
the scrap steel preheating span 3 is arranged adjacent to the scrap steel span 2, and the preheating section 12 is positioned on the scrap steel preheating span 3;
the electric furnace span 4 is arranged adjacent to the scrap steel preheating span 3, and the electric furnace body 13 is positioned on the electric furnace span 4;
the raw material span 5 is arranged adjacent to the electric furnace span 4, and an upper feeding facility 51 is arranged in the raw material span 5 along the span length direction;
the refining span 6 is arranged adjacent to the raw material span 5, the refining furnace 61 is arranged in the refining span 6 and corresponds to the electric furnace body 13, and the feeding facility 51 is used for feeding materials to the electric furnace body 13 and the refining furnace 61.
According to the steelmaking workshop process arrangement structure containing the horizontal continuous feeding electric furnace, the electric furnace span where the electric furnace body of the horizontal continuous feeding electric furnace is located in the middle of the workshop, the scrap steel preheating span and the scrap steel span are arranged on one side, and the raw material span and the refining span are arranged on the other side, so that smooth logistics of the scrap steel, the molten steel and the steel slag can be ensured, the process is smooth, the layout is compact and reasonable, the process arrangement structure occupies a small area, the arrangement requirements of two or more horizontal continuous feeding electric furnaces can be met, and the popularization of the short-flow steelmaking production process of the electric furnace is facilitated.
Further, as shown in fig. 1, the scrap steel bay 2 includes a scrap steel first bay 23 and a scrap steel second bay 24 which are adjacently disposed in the bay width direction, each of the scrap steel transportation passages 22 is disposed to penetrate through the scrap steel first bay 23 and the scrap steel second bay 24, and the horizontal continuous feeding section 11 is disposed in the scrap steel first bay 23 and the scrap steel second bay 24.
The first scrap steel bay 23 and the second scrap steel bay 24 are used for classifying and stockpiling the scrap steel, the scrap steel transportation channel 22 is communicated with the outside of the workshop, the first scrap steel bay 23, the second scrap steel bay 24 and the scrap steel preheating bay 3, and a transportation vehicle carrying qualified scrap steel can pass through the scrap steel transportation channel to supplement the scrap steel for a scrap steel stockpiling area; the horizontal continuous feeding section 11 is arranged in the first scrap steel span 23 and the second scrap steel span 24 in a penetrating mode, one end of the horizontal continuous feeding section is communicated with the preheating section 12, and the scrap steel of the first scrap steel span 23 and the second scrap steel span 24 is hoisted and added into the horizontal continuous feeding section 11 through a crane.
Further, as shown in fig. 1, a preheating zone transport passage 31 communicating with the scrap transport passage 22 is provided on the widthwise side of the scrap preheating bay 3, and the preheating zone transport passage 31 is extended in the lengthwise direction. Two adjacent preheating-zone transport passages 31 are communicated through the preheating-zone transport passages 31. The transport vehicles carrying the qualified steel scrap can pass through the preheating zone transport passage 31.
Further, as shown in fig. 1, a combustion settling chamber 32 is provided in the scrap preheating bay 3 adjacent to the preheating section 12, and a waste heat boiler 33 or a quenching tower 34 is provided on a side of the combustion settling chamber 32 remote from the preheating section.
Further, as shown in fig. 1, an outlet of the electric furnace body 13 is communicated with an electric furnace steel outlet wire 131, and the horizontal continuous charging electric furnace adopts a cross steel tapping mode, that is, the electric furnace steel outlet wire 131 extends along the length direction, so that the steel ladle processed by the electric furnace body 13 cannot penetrate into other spans. One end of the preheating section 12 extends to the electric furnace span 4 to communicate with the electric furnace body 13.
Further, as shown in fig. 1, if the horizontal continuous charging electric furnace needs to be charged with a certain proportion of molten iron, an electric furnace tipping and iron charging facility 41 is arranged at one side of the electric furnace body 13 in the electric furnace bay 4, and a molten iron tank pouring and storing facility 42 is arranged at one side of the electric furnace tipping and iron charging facility 41 away from the electric furnace body 13.
Further, as shown in fig. 1, an electric furnace transformer building 52 and a finery transformer building 53 are further arranged in the raw material bay 5, the electric furnace body 13 is electrically connected with the electric furnace transformer building 52, and the finery 61 is electrically connected with the finery transformer building 53. Because electric furnace transformer building 52 has a large floor area, in order to meet the requirement of compact structure, a part of electric furnace transformer building 52 is still located in refining span 6.
Further, as shown in fig. 1, in an embodiment of the present invention, the refining furnace 61 is a ladle refining furnace (LF refining furnace), main process facilities of the ladle refining furnace (LF refining furnace) include a water-cooled furnace cover and a lifting device thereof, an electrode lifting and rotating device, etc., the ladle refining furnace (LF refining furnace) is an electrode rotating and ladle car striding type LF refining furnace, ladle car transport lines 62 are respectively disposed on both sides of the refining furnace 61 along a striding direction, and one end of the ladle car transport line 62 can be communicated with an outlet of the electric furnace body 13. Ladle car transport line 62 can transport molten steel between electric furnace bay 4 and refining bay 6.
As shown in fig. 1, in the present embodiment, a vacuum refining furnace 64(VD or VOD vacuum refining furnace) is further disposed in the refining bay 6 to further vacuum refine the heavy ladle loaded with molten steel.
Further, as shown in fig. 1, a ladle hot repair facility 63 is also provided in the refining bay 6.
Further, as shown in fig. 1, the present invention further includes a ladle passing-over transporting line 7, at least one of which is disposed between the refining span 6 and the electric furnace span 4, for passing-over transporting heavy ladles or empty ladles between the electric furnace span 4 and the refining span 6.
The steelmaking workshop process arrangement structure 100 with the horizontal continuous charging electric furnace mainly comprises three process flows of scrap steel logistics, molten iron logistics and molten steel logistics, and specifically comprises the following steps:
scrap steel logistics:
the scrap steel transport vehicle loaded with the scrap steel enters a scrap steel storage area 21 of a scrap steel first span 23 or a scrap steel second span 24 from the outside of the workshop through a scrap steel transport channel 22, the scrap steel is unloaded to the scrap steel storage area 21 by a crane in the workshop, the scrap steel transport vehicle can also adopt a dump truck, the scrap steel can be unloaded to the scrap steel storage area 21 without the crane, and after the scrap steel is unloaded, the scrap steel transport vehicle leaves the workshop through the scrap steel transport channel 22. The scrap steel in the scrap steel storage area 21 is fed into the horizontal continuous feeding section 11 by a crane, and is fed into the metal bath (prior art) of the electric furnace body 13 for further melting and smelting under the action of vibration transportation (material transportation mode of the horizontal continuous feeding electric furnace 1 itself, prior art) of the horizontal continuous feeding section 11 and the preheating section 12.
Molten iron logistics:
the hot metal ladle loaded with molten iron may be transported to the electric furnace bay 4 by a train or a car, and lifted by a crane to the hot metal ladle pouring and storing facility 42 for storage, and if necessary, the hot metal ladle pouring and storing facility 42 may be operated for pouring. When the electric furnace body 13 needs to be smelted, the hot metal tank at the hot metal tank pouring and storing facility 42 is hoisted to the electric furnace tipping and iron adding facility 41 by the crane, so that the electric furnace body 13 is added with iron, and the hot metal is added into the metal melting pool of the electric furnace body 13 for further technological operations such as injection smelting (prior art) and the like.
In the steel-making plant using all scrap as a raw material, since the electric furnace body 13 does not need to consume any molten iron, there is no problem of molten iron logistics.
Molten steel logistics:
after the molten metal bath of the electric furnace body 13 added with molten iron and scrap steel is subjected to a series of technological operations such as slagging, electric heating, oxygen blowing and carbon spraying (prior art), steel can be discharged after the temperature and components are qualified, the molten steel is poured into a ladle of an electric furnace steel outlet wire 131, a heavy ladle loaded with the molten steel is lifted to a ladle car conveying line 62 of a ladle refining furnace (LF refining furnace) by a crane, then the ladle car-mounted heavy ladle enters a treatment position of the ladle refining furnace (LF refining furnace) for refining operation, the ladle car is driven out to a refining span 6 after the temperature components are qualified, the crane lifts the heavy ladle again and lifts the heavy ladle to a ladle rotary table (prior art) for continuous casting technological operation.
If a vacuum refining furnace 64(VD or VOD vacuum refining furnace) is arranged in the steelmaking workshop, after the temperature and the components of refined molten steel in the ladle refining furnace (LF refining furnace) are qualified, a crane is needed to hoist the heavy ladle to the vacuum refining furnace (VD or VOD vacuum refining furnace) for further vacuum refining, and after the vacuum refining is finished, the crane can hoist the heavy ladle to the ladle turret for continuous casting process operation.
From the above, the steelmaking workshop process arrangement structure containing the horizontal continuous charging electric furnace provided by the invention has the following beneficial effects:
according to the steelmaking workshop process arrangement structure containing the horizontal continuous feeding electric furnace, the electric furnace span where the electric furnace body of the horizontal continuous feeding electric furnace is located in the middle of the workshop, the scrap steel preheating span and the scrap steel span are arranged on one side, and the raw material span and the refining span are arranged on the other side, so that smooth logistics of the scrap steel, the molten steel and the steel slag can be ensured, the process is smooth, the layout is compact and reasonable, the process arrangement structure occupies a small area, the arrangement requirements of two or more horizontal continuous feeding electric furnaces can be met, and the popularization of the short-flow steelmaking production process of the electric furnace is facilitated.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.
Claims (12)
1. A steel-making workshop process arrangement structure containing a horizontal continuous charging electric furnace is characterized by comprising,
the horizontal continuous charging electric furnace comprises a horizontal continuous charging section, a preheating section and an electric furnace body which are sequentially connected in the width-spanning direction;
the scrap steel bay is used for classifying and stacking scrap steel, a plurality of scrap steel storage areas are arranged in the scrap steel bay, a scrap steel transportation channel extending along the width direction is arranged between every two adjacent scrap steel storage areas, and the horizontal continuous feeding section is positioned in the scrap steel bay;
the scrap steel preheating span is arranged adjacent to the scrap steel span, and the preheating section is positioned on the scrap steel preheating span;
the electric furnace span is arranged adjacent to the scrap steel preheating span, and the electric furnace body is positioned on the electric furnace span;
the raw material span is arranged adjacent to the electric furnace span, and an upper feeding facility is arranged in the raw material span along the span length direction;
and the refining span is arranged adjacent to the raw material span, a refining furnace is arranged in the refining span and corresponds to the electric furnace body, and the upper feeding facility is used for feeding materials to the electric furnace body and the refining furnace.
2. The steelmaking shop process arrangement including horizontal continuous feed electric furnaces as claimed in claim 1, in which the number of the horizontal continuous feed electric furnaces is two, and the two horizontal continuous feed electric furnaces are arranged in parallel at intervals in the cross-length direction.
3. The steelmaking shop process arrangement including a horizontal continuous charging electric furnace according to claim 1 or 2, wherein the scrap bay includes a scrap first bay and a scrap second bay disposed adjacent in the bay width direction, each of the scrap transport passages is disposed through the scrap first bay and the scrap second bay, and the horizontal continuous charging section is disposed in the scrap first bay and the scrap second bay.
4. The steelmaking shop process arrangement including a horizontal continuous charging electric furnace according to claim 1 or 2, characterised in that the scrap preheating bay is provided with a preheating zone transport passage communicating with the scrap transport passage on the widthwise side thereof, the preheating zone transport passage being provided to extend in the lengthwise direction.
5. The steelmaking shop process arrangement including a horizontal continuous feed electric furnace according to claim 4, in which the scrap preheating bay is further provided with a combustion settling chamber adjacent to the preheating section, and the side of the combustion settling chamber remote from the preheating section is provided with a waste heat boiler or a quench tower.
6. The steelmaking shop process arrangement including a horizontal continuous feed electric furnace as claimed in claim 1 or 2, wherein the electric furnace outgoing steel wires are provided in communication with the outlet of the electric furnace body, the electric furnace outgoing steel wires being provided to extend in the cross-length direction.
7. The steelmaking shop process arrangement including a horizontal continuous feed electric furnace as claimed in claim 6, wherein the electric furnace bay is provided with an electric furnace tipping and charging facility at a side of the electric furnace body, and the electric furnace tipping and charging facility at a side remote from the electric furnace body is provided with a hot metal tank pouring and storage facility.
8. The steelmaking plant process arrangement structure with a horizontal continuous charging electric furnace as claimed in claim 1 or 2, wherein an electric furnace transformer building and a finery transformer building are further provided in the raw material bay, the electric furnace body is electrically connected with the electric furnace transformer building, and the finery is electrically connected with the finery transformer building.
9. The steelmaking shop process arrangement structure including a horizontal continuous charging electric furnace according to claim 1 or 2, wherein the refining furnace is a ladle refining furnace, ladle car transport lines are provided on both sides of the refining furnace in the widthwise direction, respectively, and one end of the ladle car transport line can communicate with an outlet of the electric furnace body.
10. The steelmaking shop process arrangement including a horizontal continuous charging electric furnace according to claim 9, in which ladle hot repair facilities are also provided in the refining bay.
11. The steelmaking shop process arrangement including a horizontal continuous charging electric furnace according to claim 9, in which a vacuum refining furnace is also provided in the refining bay.
12. The steelmaking shop process arrangement including a horizontal continuous charging electric furnace according to claim 1 or 2, further comprising a ladle cross-over transport line, at least one being provided between the refining span and the electric furnace span, for cross-over transporting heavy or empty ladles between the electric furnace span and the refining span.
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| CN202011186418.8A CN112195303B (en) | 2020-10-30 | 2020-10-30 | Process arrangement structure of steelmaking workshop with horizontal continuous charging electric furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113502368A (en) * | 2021-08-26 | 2021-10-15 | 中冶京诚工程技术有限公司 | Magnetic scrap steel preheating type electric arc furnace |
| CN114004084A (en) * | 2021-10-30 | 2022-02-01 | 中冶华天南京工程技术有限公司 | Intelligent simulation method for scrap steel logistics of electric furnace steelmaking project |
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|---|---|
| CN112195303B (en) | 2024-04-19 |
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