Steelmaking workshop with back co-span vanadium extraction steelmaking converter

Abstract

The invention relates to a steelmaking workshop with a back co-span vanadium extraction steelmaking converter, and belongs to the technical field of metallurgical industry. Aiming at the problems of large plant area, repeated investment of equipment, low layout efficiency and the like caused by span arrangement of the vanadium extraction converter and the steelmaking converter in the prior art, the vanadium extraction converter and the steelmaking converter are arranged in the same converter span in a back-to-back manner, the vanadium extraction converter faces a slag span, the steelmaking converter faces a continuous casting span, and reverse operation of the process is realized. By sharing an auxiliary raw material feeding system, repeated construction of auxiliary raw materials is reduced; the steelmaking feeding bay has the function of a refining bay, and an independent steelmaking feeding bay and an independent vanadium extraction converter bay are omitted. On the premise that the policy compliance is met, the plant occupied area and steel structure consumption are remarkably reduced, the equipment investment cost is reduced, and the plant utilization rate and production continuity are improved.

Description

Technical Field

[0001] This invention belongs to the field of metallurgical industry technology and relates to a steelmaking workshop with a back-to-back vanadium extraction converter. Background Technology

[0002] Vanadium is an important strategic resource, widely used in steel, aerospace, chemical, and new energy fields. To recover vanadium from molten iron in blast furnaces smelting vanadium-titanium magnetite, vanadium extraction converters are typically installed in the steelmaking process. These converters use oxygen to extract vanadium, which is then oxidized and incorporated into the slag for further recycling. The semi-steel produced in the vanadium extraction converter is then added to the steelmaking converter, where it is refined into qualified molten steel. Because the vanadium extraction converter's furnace body, waste heat boiler, dust removal system, and oxygen lance valve station are essentially the same as those of a conventional steelmaking converter, and given the strict national control over steel production, to prevent steel companies from using vanadium extraction converters for carbon steel smelting, national and local governments require that vanadium extraction converters not be located in the same bay as steelmaking converters.

[0003] Under this requirement, vanadium extraction converters are typically arranged in separate spans and towers from steelmaking converters. Specifically, the vanadium extraction converter has its own separate vanadium extraction charging span and vanadium extraction converter span; the steelmaking converter correspondingly requires a steelmaking charging span, a steelmaking converter span, a refining span, and a molten steel receiving span. The steelmaking converter charging span is the same as the vanadium extraction converter's semi-finished steel tapping span. Under this process layout, the vanadium extraction converter's tapping track only connects to the steelmaking charging span, preventing it from directly transporting semi-finished steel to the molten steel receiving span. This also avoids the possibility of transporting molten steel from the vanadium extraction converter after smelting carbon steel directly to the continuous casting machine for casting.

[0004] This layout is commonly used in steel mills today.

[0005] The separate arrangement of vanadium extraction converter and steelmaking converter has the following drawbacks:

[0006] 1) The factory area has been greatly increased.

[0007] Compared to the layout where vanadium extraction and steelmaking converters are located in the same span, this arrangement adds a vanadium extraction charging span and a vanadium extraction converter span to the steelmaking workshop, significantly increasing the plant area.

[0008] 2) The factory consumes a large amount of steel.

[0009] The vanadium extraction and charging span is equipped with a casting crane for transporting molten iron, and the entire plant is a heavy-duty plant; while the vanadium extraction converter span has a tower for the vanadium extraction converter, making it a high-span plant. The steel structure consumption of both the heavy-duty plant and the high-span plant is greater than that of ordinary plant buildings.

[0010] 3) Redundant construction of by-product feeding systems

[0011] The vanadium extraction converter and the steelmaking converter are located in different converter bays, and each requires an independent auxiliary raw material feeding system, resulting in redundant investment in equipment.

[0012] 4) Inefficient layout

[0013] The vanadium extraction charging span and the vanadium extraction converter span are generally the same length as the workshop. Except for the vanadium extraction converter layout area, the remaining areas are either steelmaking converter slag car tracks or empty areas, resulting in low plant utilization.

[0014] In summary, existing technologies suffer from problems such as large footprint and high construction costs. There is an urgent need for a new layout method that achieves intensive processing of vanadium extraction and steelmaking converters while complying with policy regulations. Summary of the Invention

[0015] In view of this, the purpose of the present invention is to provide a steelmaking workshop with a vanadium extraction and steelmaking converter with back-to-back co-span arrangement, which solves the problems of redundant land occupation and excessive investment caused by the separate span arrangement of existing vanadium extraction and steelmaking workshops, and achieves process system integration and optimization under the premise of meeting national standards.

[0016] To achieve the above objectives, the present invention provides the following technical solution:

[0017] A steelmaking workshop with a vanadium extraction and steelmaking converter facing away from each other includes a slag bay, a vanadium extraction charging bay, a converter bay, a steelmaking charging bay, and a molten steel receiving bay arranged in sequence. The converter bay is equipped with a converter tower, which houses a vanadium extraction converter, a steelmaking converter, a high-level silo for converter support, an oxygen lance system, an oxygen lance hoisting channel, and a secondary raw material feeding system that works in conjunction with the high-level silo.

[0018] The vanadium extraction converter and the steelmaking converter are arranged back-to-back in the same converter span. The vanadium extraction converter is fed towards the vanadium extraction feeding span, and the steelmaking converter is fed towards the steelmaking feeding span. The vanadium extraction converter uses oxygen blowing to extract vanadium. The semi-steel after vanadium extraction is transferred to the steelmaking converter for steelmaking processing and smelting into molten steel. The molten steel is hoisted out from the steelmaking feeding span or the molten steel receiving span.

[0019] Optionally, the vanadium extraction charging span is used to add molten iron and pig iron to the vanadium extraction converter; the steelmaking charging span is used to add molten iron and scrap steel to the steelmaking converter, or as a refining span to arrange steel refining facilities, so as to meet the requirements of hoisting molten steel from the steelmaking converter to the refining unit ladle or hoisting molten steel between refining units.

[0020] Optionally, a furnace front operation platform is provided on one side of the steelmaking converter, and the furnace front operation platform is located in the steelmaking charging span; the furnace front operation platform is provided with a molten steel hoisting hole for hoisting the molten steel smelted by the steelmaking converter to the molten steel refining facility for refining.

[0021] Optionally, the lower level of the converter tower is equipped with a vanadium extraction converter and a steelmaking converter, while the upper level is equipped with a high-level silo, an oxygen lance system, an oxygen lance hoisting channel, and a secondary raw material feeding system that cooperates with the high-level silo. The high-level silo, oxygen lance system, and oxygen lance hoisting channel are all located within the converter span. Two sets of each of the high-level silo, oxygen lance system, and oxygen lance hoisting channel are provided, respectively cooperating with the vanadium extraction converter and the steelmaking converter.

[0022] Optionally, the lower level of the converter tower is provided with oxygen lance hoisting holes, including oxygen lance hoisting holes for vanadium extraction converters and oxygen lance hoisting holes for steelmaking converters, which are respectively matched with the vanadium extraction converter and the steelmaking converter; the oxygen lance hoisting channel and the oxygen lance hoisting holes are respectively set according to the oxygen lance installation position;

[0023] The oxygen lance hoisting hole and the oxygen lance transport channel of the vanadium extraction converter are arranged on the side of the converter span near the vanadium extraction charging span; the oxygen lance hoisting hole and the oxygen lance transport channel of the steelmaking converter are arranged on the side of the converter span near the steelmaking charging span.

[0024] Optionally, the oxygen lance system includes a vanadium extraction converter oxygen lance system and a steelmaking converter oxygen lance system correspondingly arranged above the two converters; the high-level silo includes a vanadium extraction converter high-level silo and a steelmaking converter high-level silo; the vanadium extraction converter high-level silo is located on the opposite side of the vanadium extraction converter oxygen lance system, and the vanadium extraction converter oxygen lance hoisting channel is located between the vanadium extraction converter oxygen lance system and the vanadium extraction converter high-level silo; the steelmaking converter high-level silo is located on the opposite side of the steelmaking converter oxygen lance system, and the steelmaking converter oxygen lance hoisting channel is located between the steelmaking converter oxygen lance system and the steelmaking converter high-level silo.

[0025] Optionally, the high-level silo of the vanadium extraction converter and the high-level silo of the steelmaking converter share a single auxiliary raw material feeding system.

[0026] Optionally, the center-line distance between the high-level silos of the vanadium extraction converter and the high-level silos of the steelmaking converter is 0 to 1000 mm.

[0027] Optionally, a vanadium extraction converter tapping line is also provided, which is connected to the vanadium extraction converter. The vanadium extraction converter tapping line extends from the slag span to the steelmaking charging span. The semi-steel smelted in the vanadium extraction converter is transported to the steelmaking charging span via the vanadium extraction converter tapping line, without the need for a transfer car to transport it across the span.

[0028] Optionally, a steelmaking converter tapping line connected to the steelmaking converter is also provided, which extends from the slag span to the molten steel receiving span; the molten steel smelted in the steelmaking converter is transported to the steelmaking charging span or the molten steel receiving span via the steelmaking converter tapping line, without the need for a transfer car to transport the steel across the span.

[0029] The beneficial effects of this invention are as follows:

[0030] This invention is particularly suitable for scenarios requiring separate bay layouts for vanadium extraction and steelmaking converters. By arranging the vanadium extraction and steelmaking converters in the same converter bay, but with them facing opposite directions, it solves the problems of redundant land use and excessive investment caused by the separate bay layout in existing vanadium extraction and steelmaking workshops, achieving process system integration and optimization while meeting national standards. Compared to separate bay layouts, this invention reduces one vanadium extraction converter bay and one refining bay. Furthermore, the vanadium extraction and steelmaking converters share a common auxiliary raw material feeding system, saving one auxiliary raw material feeding system compared to separate bay layouts.

[0031] The specific beneficial effects are as follows:

[0032] (1) Compliance of process layout

[0033] The two converter operating areas are physically separated by their back-to-back arrangement; however, the vanadium extraction converter's tapping track only connects to the steelmaking charging bay and does not have the capability to directly transport semi-finished steel to the molten steel receiving bay. In other words, the vanadium extraction converter does not have the capability to transport molten steel from carbon steel smelting to the molten steel receiving bay for direct casting on the continuous casting machine. This invention satisfies the equivalent policy requirement for the separate bay arrangement of the vanadium extraction and steelmaking converters.

[0034] (2) Economic efficiency

[0035] By reducing one vanadium extraction converter span, one refining span, one tower, and one auxiliary raw material feeding system, the plant land area is reduced by approximately 20%-30%, and civil engineering investment is reduced by approximately 35%-45%.

[0036] (3) Efficiency improvement

[0037] Because one vanadium extraction converter span is reduced, and the steelmaking converter and the vanadium extraction converter share the same converter span, the distance for transporting steelmaking converter slag to the slag span is shortened by more than 35% compared to the separate span arrangement.

[0038] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0039] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0040] Figure 1 This is a schematic diagram of the converter layout of the present invention;

[0041] Figure 2 This is a schematic diagram of the converter oxygen lance system and auxiliary raw material arrangement of the present invention.

[0042] Figure label:

[0043] 1. Steel tapping line at the bottom of the steelmaking converter; 2. Steel tapping line at the bottom of the vanadium extraction converter; 3. Converter tower; 4. Oxygen lance hoisting hole for vanadium extraction converter; 5. Vanadium extraction converter; 6. Steelmaking converter; 7. Steelmaking converter front molten steel hoisting hole; 8. Oxygen lance hoisting hole for steelmaking converter; 9. Oxygen lance hoisting channel for vanadium extraction converter; 10. Secondary raw material feeding system; 11. Oxygen lance system for vanadium extraction converter; 12. High-level silo for vanadium extraction converter; 13. High-level silo for steelmaking converter; 14. Oxygen lance system for steelmaking converter; 15. Oxygen lance hoisting channel for steelmaking converter. Detailed Implementation

[0044] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0045] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0046] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0047] Example 1

[0048] Please see Figures 1-2This is a steelmaking workshop with a vanadium extraction and steelmaking converter arranged in opposite directions. It includes a slag bay, a vanadium extraction charging bay, a converter bay, a steelmaking charging bay, a molten steel receiving bay, and a continuous casting bay, arranged sequentially. The converter bay contains a converter tower 3. The lower level of the converter tower 3 houses a vanadium extraction converter 5 and a steelmaking converter 6. The upper level contains a high-level material silo for converter support, an oxygen lance system, and an oxygen lance hoisting channel. The high-level material silo is equipped with a secondary raw material feeding system 10 and other facilities. The tower 3 is used to house the vanadium extraction converter 5 and the steelmaking converter 6, along with their supporting auxiliary facilities.

[0049] Vanadium extraction converter 5 is used to recover vanadium from the molten iron in the vanadium-titanium blast furnace. Vanadium extraction converter 5 uses oxygen blowing to extract vanadium, and the vanadium is oxidized and enters the vanadium slag. The semi-steel after vanadium extraction is supplied to steelmaking converter 6 for steelmaking processing. Steelmaking converter 6 is used to smelt the semi-steel after vanadium extraction into qualified molten steel.

[0050] The slag bay is where vanadium slag or steel slag produced during the vanadium extraction converter 5 or steelmaking converter 6 is transferred from the production equipment to the slag bay via slag pots. In the vanadium extraction charging bay, vanadium extraction converter 5 is used to add molten iron and pig iron; in the steelmaking charging bay, steelmaking converter 6 is used to add molten iron and scrap steel. It can also serve as a refining bay to house refining facilities and facilitate the hoisting of molten steel from the converter to the refining unit (accurately placing the ladle or ladle containing molten steel to the designated position in the refining unit, connecting the ladle with the refining unit for subsequent refining operations), or the hoisting of molten steel between refining units. In the continuous casting bay, molten steel is formed through the continuous casting process.

[0051] Vanadium extraction converter 5 and steelmaking converter 6 are arranged back-to-back in the same converter bay. Vanadium extraction converter 5 is charged towards the vanadium extraction charging bay, while steelmaking converter 6 is charged towards the steelmaking charging bay. Vanadium extraction converter 5 uses oxygen blowing to extract vanadium. The semi-finished steel after vanadium extraction is transferred to steelmaking converter 6 for steelmaking processing, smelting it into molten steel. The molten steel is hoisted out from either the steelmaking charging bay or the molten steel receiving bay. A furnace-front operating platform is located on one side of steelmaking converter 6, situated in the steelmaking charging bay. A molten steel hoisting hole 7 is provided on the furnace-front operating platform; this hoisting hole 7 is used to hoist the molten steel smelted in steelmaking converter 6 to the refining unit's ladle.

[0052] The high-level silo, oxygen lance system, and oxygen lance hoisting channel are all located within the converter span.

[0053] The lower level of converter tower 3 is also equipped with oxygen lance hoisting holes, including oxygen lance hoisting hole 4 for vanadium extraction converter and oxygen lance hoisting hole 8 for steelmaking converter. The oxygen lance hoisting channel and the oxygen lance hoisting holes are respectively set according to the oxygen lance installation position. Both the oxygen lance hoisting hole 4 and the oxygen lance hoisting hole 8 for steelmaking converter are located in the converter span. In some embodiments of the present invention, both the oxygen lance hoisting hole 4 and the oxygen lance hoisting channel 9 for vanadium extraction converter are located within the converter span, near the vanadium extraction charging span; both the oxygen lance hoisting hole 8 and the oxygen lance hoisting channel 15 for steelmaking converter are located within the converter span, near the steelmaking charging span. The oxygen lance system is used for oxygen blowing into the vanadium extraction converter 5 and the steelmaking converter 6; the oxygen lance is moved, hoisted, and replaced through the oxygen lance hoisting channel.

[0054] In some embodiments of the present invention, the oxygen lance system includes a vanadium extraction converter oxygen lance system 11 and a steelmaking converter oxygen lance system 14, respectively disposed above the two converters; the high-level silos include a vanadium extraction converter high-level silo 12 and a steelmaking converter high-level silo 13. The vanadium extraction converter high-level silo 12 is disposed on the opposite side of the vanadium extraction converter oxygen lance system 11, and the vanadium extraction converter oxygen lance hoisting channel 9 is located between the vanadium extraction converter oxygen lance system 11 and the vanadium extraction converter high-level silo 12; the steelmaking converter high-level silo 13 is disposed on the opposite side of the steelmaking converter oxygen lance system 14, and the steelmaking converter oxygen lance hoisting channel 15 is located between the steelmaking converter oxygen lance system 14 and the steelmaking converter high-level silo 13.

[0055] The high-level silo 12 of the vanadium extraction converter and the high-level silo 13 of the steelmaking converter share a single auxiliary raw material feeding system 10. The center-line distance between the high-level silos 12 and 13 is 0–1000 mm. The auxiliary raw materials stored in the high-level silos 12 and 13 are transported to the vanadium extraction converter 5 and the steelmaking converter 6 when needed.

[0056] In this embodiment, a vanadium extraction converter tapping line 2 connected to the vanadium extraction converter 5 and a steelmaking converter tapping line 1 connected to the steelmaking converter 6 are also provided. The semi-finished steel after vanadium extraction is transferred from the vanadium extraction converter 5 to the steelmaking converter 6 via the vanadium extraction converter tapping line 2, and the molten steel produced is transported out of the steelmaking converter 6 via the steelmaking converter tapping line 1. Specifically, the vanadium extraction converter tapping line 2 extends from the slag cross to the steelmaking charging cross, and the steelmaking converter tapping line 1 extends from the slag cross to the molten steel receiving cross.

[0057] The steelmaking charging bay is equipped with a refining unit. After the steel is molten in converter 6, it is transferred to the refining unit for further refining. This gives the steelmaking charging bay the function of a refining bay as well. The specific location of the refining unit will be determined based on site requirements.

[0058] Example 2

[0059] A steelmaking process flow for a steelmaking workshop employing the vanadium extraction converter with back-to-back co-span as described in the above embodiments includes the following steps:

[0060] The molten iron from the vanadium-titanium blast furnace is transported to the vanadium extraction and charging bay. A crane is used to lift the molten iron and pig iron blocks into the vanadium extraction converter 5. Oxygen is blown into the vanadium extraction converter 5 by oxygen lance to achieve oxygen extraction of vanadium in the vanadium extraction converter 5.

[0061] The semi-steel obtained after vanadium extraction by oxygen blowing in vanadium extraction converter 5 is transported to the steelmaking charging bay via molten steel ladle car under the furnace and steel tapping line 2 under the vanadium extraction converter, without the need for transfer car to the charging bay. In the steelmaking charging bay, the semi-steel and scrap steel are lifted by crane and poured into steelmaking converter 6. Oxygen lance blows oxygen into steelmaking converter 6 to realize smelting in steelmaking converter 6.

[0062] The qualified molten steel smelted by the steelmaking converter 6 is transported through the steelmaking converter tapping line 1 to the molten steel hoisting hole 7 or molten steel receiving span on the side of the steelmaking charging span. There is no need to transfer the steel across the span in the middle. The steel is then hoisted to the refining unit for refining treatment by the inter-span crane.

[0063] The same auxiliary raw material feeding system 10 feeds materials to the high-level material silo 12 of the vanadium extraction converter and the high-level material silo 13 of the steelmaking converter. The auxiliary raw materials are stored in the high-level material silos and are transported to the vanadium extraction converter 5 and the steelmaking converter 6 when needed.

[0064] When the oxygen lance in vanadium extraction converter 5 or steelmaking converter 6 needs to be replaced, the oxygen lance is lifted by the workshop crane through the oxygen lance hoisting channel 9 of the vanadium extraction converter or the oxygen lance hoisting channel 15 of the steelmaking converter, the oxygen lance hoisting hole 4 of the vanadium extraction converter or the oxygen lance hoisting hole 8 of the steelmaking converter for replacement.

[0065] This invention employs a vanadium extraction converter 5 and a steelmaking converter 6 arranged in a back-to-back span, placing them in the same converter bay but with opposite orientations. That is, the ferroalloy extraction converter 5 and the steelmaking converter 6 have opposite ferroalloy charging directions, but the steel tapping directions are the same. The tapping track of the vanadium extraction converter 5 only connects to the steelmaking charging bay and does not have the capability to directly transport semi-finished steel to the molten steel receiving bay. In other words, the vanadium extraction converter 5 also lacks the capability to transport molten steel from carbon steel smelting to the molten steel receiving bay for direct casting on a continuous casting machine. This invention is equivalent in process layout to a separate span arrangement of the vanadium extraction converter 5 and the steelmaking converter 6, meeting compliance requirements of national and local policies. The vanadium extraction converter 5 and the steelmaking converter 6, along with their associated waste heat boilers, primary dust removal facilities, and charging systems, are all located within the same tower 3, sharing the same tower. The platforms on each level are interconnected, facilitating maintenance and operation. A shared auxiliary raw material feeding system 10 is used, unloading materials from ore cars to the vanadium extraction converter 5 or the high-level silo 13 of the steelmaking converter. The logistics design has also been optimized: molten iron is directly transported to the vanadium extraction charging bay, where it is lifted by a crane and poured into the vanadium extraction converter 5. Semi-steel from the vanadium extraction converter 5 is transported to the steelmaking charging bay via under-furnace semi-steel ladle cars, where it is lifted by a crane and poured into the steelmaking converter 6. Qualified molten steel from the steelmaking converter 6 is transported to the steelmaking charging bay or molten steel receiving bay via under-furnace molten steel ladle cars, where it is lifted by a crane onto the refining unit. The workshop logistics are smooth and without cross-interference.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A steelmaking workshop with a back-to-back vanadium extraction converter, characterized in that: It includes a slag span, a vanadium extraction charging span, a converter span, a steelmaking charging span, and a molten steel receiving span arranged in sequence; the converter span is equipped with a converter tower, which houses a vanadium extraction converter, a steelmaking converter, a high-level silo for converter use, an oxygen lance system, an oxygen lance hoisting channel, and a secondary raw material feeding system that works in conjunction with the high-level silo; The vanadium extraction converter and the steelmaking converter are arranged back-to-back in the same converter span. The vanadium extraction converter is fed towards the vanadium extraction feeding span, and the steelmaking converter is fed towards the steelmaking feeding span. The vanadium extraction converter uses oxygen blowing to extract vanadium. The semi-steel after vanadium extraction is transferred to the steelmaking converter for steelmaking processing and smelting into molten steel. The molten steel is hoisted out from the steelmaking feeding span or the molten steel receiving span.

2. The steelmaking workshop with a vanadium extraction converter facing backwards across the same span as described in claim 1, characterized in that: The vanadium extraction charging span is used for adding molten iron and pig iron to the vanadium extraction converter; the steelmaking charging span is used for adding molten iron and scrap steel to the steelmaking converter, or as a refining span for arranging steel refining facilities, to meet the needs of hoisting molten steel from the steelmaking converter to the refining unit ladle or hoisting molten steel between refining units.

3. The steelmaking workshop with a vanadium extraction converter facing backwards across the same span as described in claim 2, characterized in that: A furnace front operation platform is provided on one side of the steelmaking converter, and the furnace front operation platform is located in the steelmaking charging span; the furnace front operation platform is provided with a molten steel hoisting hole for hoisting the molten steel produced by the steelmaking converter to the molten steel refining facility for refining.

4. The steelmaking workshop with a vanadium extraction converter facing backwards across the same span as described in claim 1, characterized in that: The lower level of the converter tower houses a vanadium extraction converter and a steelmaking converter, while the upper level houses a high-level silo, an oxygen lance system, an oxygen lance hoisting channel, and a secondary raw material feeding system that works in conjunction with the high-level silo. The high-level silo, oxygen lance system, and oxygen lance hoisting channel are all located within the converter span. Two sets of each of the high-level silo, oxygen lance system, and oxygen lance hoisting channel are provided, each working in conjunction with the vanadium extraction converter and the steelmaking converter, respectively.

5. The steelmaking workshop with a vanadium extraction converter facing backwards across the same span as described in claim 4, characterized in that: The lower level of the converter tower is provided with oxygen lance hoisting holes, including oxygen lance hoisting holes for vanadium extraction converters and oxygen lance hoisting holes for steelmaking converters; the oxygen lance hoisting channel and the oxygen lance hoisting holes are respectively set according to the oxygen lance installation position; The oxygen lance hoisting hole and the oxygen lance transport channel of the vanadium extraction converter are arranged on the side of the converter span near the vanadium extraction charging span; the oxygen lance hoisting hole and the oxygen lance transport channel of the steelmaking converter are arranged on the side of the converter span near the steelmaking charging span.

6. The steelmaking workshop with a vanadium extraction converter facing backwards across the same span as described in claim 5, characterized in that: The oxygen lance system includes a vanadium extraction converter oxygen lance system and a steelmaking converter oxygen lance system, respectively, positioned above the two converters. The high-level silos include a vanadium extraction converter high-level silo and a steelmaking converter high-level silo. The vanadium extraction converter high-level silo is located on the opposite side of the vanadium extraction converter oxygen lance system, and the vanadium extraction converter oxygen lance hoisting channel is located between the vanadium extraction converter oxygen lance system and the vanadium extraction converter high-level silo. The steelmaking converter high-level silo is located on the opposite side of the steelmaking converter oxygen lance system, and the steelmaking converter oxygen lance hoisting channel is located between the steelmaking converter oxygen lance system and the steelmaking converter high-level silo.

7. The steelmaking workshop with a vanadium extraction converter facing backwards across the same span as described in claim 6, characterized in that: The high-level silo for vanadium extraction converter and the high-level silo for steelmaking converter share a single auxiliary raw material feeding system.

8. The steelmaking workshop with a vanadium extraction converter facing backwards across the same span as described in claim 6, characterized in that: The centerline distance between the high-level silos of the vanadium extraction converter and the high-level silos of the steelmaking converter is 0-1000 mm.

9. The steelmaking workshop with a vanadium extraction converter facing backwards across the same span as described in claim 1, characterized in that: The furnace is also equipped with a vanadium extraction converter bottom tapping line connected to the vanadium extraction converter. The vanadium extraction converter bottom tapping line extends from the slag span to the steelmaking charging span. The semi-steel smelted by the vanadium extraction converter is transported to the steelmaking converter charging span via the vanadium extraction converter bottom tapping line, without the need for a transfer car to transport it across the span.

10. The steelmaking workshop with a vanadium extraction converter facing backwards across the same span as described in claim 1, characterized in that: The steelmaking converter is also connected to the steelmaking converter and is provided with a steelmaking converter bottom tapping line. The steelmaking converter bottom tapping line extends from the slag span to the molten steel receiving span. The molten steel smelted by the steelmaking converter is transported to the steelmaking charging span or the molten steel receiving span via the steelmaking converter bottom tapping line, without the need for a transfer car to transfer the steel across the span.

Images