Smelting system suitable for vanadium-titanium smelting
By adding semi -steel desulfurization and slag to grinding slag in vanadium smelting process, using the combination of tadpole smelting furnace, steel bag refining furnace and other equipment to solve the problem of low iron temperature and high sulfur content in vanadium titanium smelting. Cost -of -low sulfur steel production.
Patent Information
- Application Number
- CN202421222992.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-30
AI Technical Summary
In the existing vanadium titanium smelting process, the low temperature of the molten iron and the high sulfur content lead to low production efficiency, high cost and difficulty in producing low sulfur steel.
Increase the process of desulfurization and slag from the rear semi -sulfur and slag in the tilted furnace. By combining the combination of the mellow smelting furnace, steel bag refining furnace, de -phosphorus turntable furnace, VD vacuum refining furnace and connecting machine, use the solenoid valve and signal transferor to control the pipeline connection to achieve Semi -steel effective desulfurization and slag treatment.
The temperature and desulfurization conditions of the semi -steel are improved, the sulfur content is reduced, the production cost is reduced, the production efficiency is improved, and the subsequent production provides good conditions.
Smart Images
Figure CN222411758U_ABST
Abstract
Description
Technical field:
[0001] The utility model relates to the technical field of steelmaking equipment, in particular to a smelting system suitable for vanadium and titanium smelting. Background technology:
[0002] At present, the molten iron produced by vanadium-titanium ore has the disadvantages of low temperature and high sulfur content. The process layout for producing high-quality special steel is mainly "vanadium extraction converter vanadium smelting-steelmaking converter dephosphorization smelting-double LF refining smelting-VD treatment-continuous casting". For the production of low-sulfur steel, there is a process of KR or powder spraying treatment after vanadium extraction in the vanadium extraction furnace. The above method has high consumption and poor smelting stability due to the low semi-steel temperature, low dephosphorization converter scrap steel ratio, and large amount of molten steel resulfurization. Utility model content:
[0003] The purpose of the utility model is to overcome the shortcomings of the above-mentioned prior art and to provide a smelting system suitable for vanadium-titanium smelting, which improves production efficiency, solves the problem of limited high-end varieties, and optimizes production costs.
[0004] In order to solve the problems existing in the background technology, the utility model adopts the following technical scheme: it includes a vanadium extraction smelting converter, a ladle refining furnace one, a dephosphorization converter, a ladle refining furnace two, a VD vacuum refining furnace and a continuous casting machine. The vanadium extraction smelting converter is respectively connected to the ladle refining furnace one and the dephosphorization converter through transportation pipelines, the ladle refining furnace one is respectively connected to the dephosphorization converter and the slag removal treatment through transportation pipelines, the dephosphorization converter is connected to the ladle refining furnace two through transportation pipelines, and the ladle refining furnace two is respectively connected to the VD vacuum refining furnace and the continuous casting machine through transportation pipelines.
[0005] The transport pipelines are all provided with solenoid valves, which are connected to an external controller via wires.
[0006] The vanadium extraction and smelting converter is provided with a signal transmitter 1, which is connected to an external controller through a wire. The signal transmitter 1 indicates whether to smelt low-sulfur steel. When the signal transmitter 1 is NO, the signal transmitter 1 sends a signal to the external controller, and the external controller controls the solenoid valve of the transportation pipeline between the vanadium extraction and smelting converter and the dephosphorization converter to open, and the vanadium extraction and smelting converter is connected with the dephosphorization converter; the signal transmitter 1 indicates whether to smelt low-sulfur steel. When the signal transmitter 1 is YES, the signal transmitter 1 sends a signal to the external controller, and the external controller controls the solenoid valve of the transportation pipeline between the vanadium extraction and smelting converter and the ladle refining furnace to open, and the vanadium extraction and smelting converter is connected with the ladle refining furnace, the ladle refining furnace is connected with the slag removal treatment, and the slag removal treatment is connected with the dephosphorization converter.
[0007] The ladle refining furnace 2 is provided with a signal transmitter 2 and a signal transmitter 3, both of which are connected to an external controller through wires. Signal transmitter 2 is used to measure temperature and take samples to analyze whether the components are satisfied, and signal transmitter 3 is used to determine whether degassing treatment is required. When signal transmitter 2 is NO, the material in the ladle refining furnace 2 is returned to the dephosphorization converter through a transport pipeline. When signal transmitter 2 is YSE, signal transmitter 3 is started. When signal transmitter 3 is YES, ladle refining furnace 2 is connected to the VD vacuum refining furnace. When signal transmitter 3 is NO, ladle refining furnace 2 is connected to the continuous casting machine.
[0008] The beneficial effects of the utility model are: adding the semi-steel desulfurization and slag removal process after the vanadium extraction converter, the advantage of which is that the semi-steel C is about 3.0%, the semi-steel oxygen content is low, and it has good desulfurization conditions, and it can obtain semi-steel with lower sulfur without increasing the cost of higher slag materials, and at the same time, the temperature of the semi-steel is increased, providing good conditions for the dephosphorization converter, creating conditions for subsequent production efficiency improvement and high-grade steel smelting. Description of the drawings:
[0009] Figure 1 It is a schematic diagram of the structure of the utility model. Specific implementation method:
[0010] Reference Figure 1The utility model specifically adopts the following implementation methods: including a vanadium smelting converter, a ladle refining furnace 1, a dephosphorization converter, a ladle refining furnace 2, a VD vacuum refining furnace and a continuous casting machine, the vanadium smelting converter is respectively connected to the ladle refining furnace 1 and the dephosphorization converter through a transportation pipeline, the ladle refining furnace 1 is respectively connected to the dephosphorization converter and the slag removal treatment through a transportation pipeline, the dephosphorization converter is connected to the ladle refining furnace 2 through a transportation pipeline, and the ladle refining furnace 2 is respectively connected to the VD vacuum refining furnace and the continuous casting machine through a transportation pipeline. The transportation pipelines are all provided with solenoid valves, which are connected to an external controller through a wire. The vanadium extraction and smelting converter is provided with a signal transmitter 1, which is connected to an external controller through a wire. The signal transmitter 1 indicates whether to smelt low-sulfur steel. When the signal transmitter 1 is NO, the signal transmitter 1 sends a signal to the external controller, and the external controller controls the solenoid valve of the transportation pipeline between the vanadium extraction and smelting converter and the dephosphorization converter to open, and the vanadium extraction and smelting converter is connected with the dephosphorization converter; the signal transmitter 1 indicates whether to smelt low-sulfur steel. When the signal transmitter 1 is YES, the signal transmitter 1 sends a signal to the external controller, and the external controller controls the solenoid valve of the transportation pipeline between the vanadium extraction and smelting converter and the ladle refining furnace to open, and the vanadium extraction and smelting converter is connected with the ladle refining furnace, the ladle refining furnace is connected with the slag removal treatment, and the slag removal treatment is connected with the dephosphorization converter. The ladle refining furnace 2 is provided with a signal transmitter 2 and a signal transmitter 3, both of which are connected to an external controller through wires. Signal transmitter 2 is used to measure temperature and take samples to analyze whether the components are satisfied, and signal transmitter 3 is used to determine whether degassing treatment is required. When signal transmitter 2 is NO, the material in the ladle refining furnace 2 is returned to the dephosphorization converter through a transport pipeline. When signal transmitter 2 is YSE, signal transmitter 3 is started. When signal transmitter 3 is YES, ladle refining furnace 2 is connected to the VD vacuum refining furnace. When signal transmitter 3 is NO, ladle refining furnace 2 is connected to the continuous casting machine.
[0011] This smelting system suitable for vanadium-titanium smelting eliminates the low smelting temperature and high sulfur content of vanadium-titanium ore in ironmaking, and the low-sulfur steel smelting in steelmaking is carried out smoothly; semi-steel desulfurization process and slag removal process are added, and the dephosphorization converter and ladle refining furnace obtain stable semi-steel water temperature and stable semi-steel water sulfur content through semi-steel desulfurization. For the dephosphorization converter, adding semi-steel desulfurization process and slag removal process to increase the semi-steel temperature can effectively increase the scrap steel ratio of the dephosphorization converter and reduce the iron consumption. Adding semi-steel desulfurization process and slag removal process can stabilize production and improve production efficiency, and can achieve the purpose of double refining production of conventional steel grades and improve production rhythm.
[0012] The above includes adding two processes: the desulfurization process of the semi-steel through the ladle refining furnace and the slag treatment process after desulfurization. The desulfurization and slag treatment of the semi-steel as a whole can be selected for high sulfur furnace or low sulfur steel furnace treatment, or in the conventional non-low sulfur steel production, two ladle refining furnaces can be used to refine the molten steel provided by the dephosphorization converter, increase the buffer time before the continuous casting machine process, improve the cleanliness of the molten steel, and improve production efficiency.
[0013] The process design achieves efficiency improvement and product variety expansion through semi-steel desulfurization and slag treatment technology.
[0014] In summary, the smelting system suitable for vanadium-titanium smelting adds semi-steel desulfurization and slag removal processes after the vanadium-extracting converter. Its advantages are that the semi-steel C is about 3.0%, the semi-steel oxygen content is low, and it has good desulfurization conditions. It can obtain semi-steel with lower sulfur without increasing the cost of higher slag materials. At the same time, the temperature of the semi-steel is increased, providing good conditions for the dephosphorization converter, creating conditions for subsequent production efficiency improvement and high-grade steel smelting.
Claims
1. A smelting system suitable for vanadium and titanium smelting, characterized by: It includes a vanadium smelting converter, a ladle refining furnace 1, a dephosphorization converter, a ladle refining furnace 2, a VD vacuum refining furnace and a continuous casting machine. The vanadium smelting converter is connected to the ladle refining furnace 1 and the dephosphorization converter through transportation pipelines, respectively. The ladle refining furnace 1 is connected to the dephosphorization converter and the slag removal treatment through transportation pipelines, respectively. The dephosphorization converter is connected to the ladle refining furnace 2 through transportation pipelines, and the ladle refining furnace 2 is connected to the VD vacuum refining furnace and the continuous casting machine through transportation pipelines.
2. A smelting system suitable for vanadium and titanium smelting according to claim 1, characterized in that: The transport pipelines are all provided with solenoid valves, which are connected to an external controller via wires.
3. A smelting system suitable for vanadium and titanium smelting according to claim 1 or 2, characterized in that: A signal transmitter is provided on the vanadium extracting and smelting converter, and the signal transmitter is connected to an external controller through a wire. The signal transmitter indicates whether to smelt low-sulfur steel. When the signal transmitter is NO, the signal transmitter sends a signal to the external controller, and the external controller controls the solenoid valve of the transportation pipeline between the vanadium extracting and smelting converter and the dephosphorization converter to open, and the vanadium extracting and smelting converter is connected with the dephosphorization converter; the signal transmitter indicates whether to smelt low-sulfur steel. When the signal transmitter is YES, the signal transmitter sends a signal to the external controller, and the external controller controls the solenoid valve of the transportation pipeline between the vanadium extracting and smelting converter and the ladle refining furnace to open, and the vanadium extracting and smelting converter is connected with the ladle refining furnace, the ladle refining furnace is connected with the slag removal treatment, and the slag removal treatment is connected with the dephosphorization converter.
4. A smelting system suitable for vanadium and titanium smelting according to claim 1 or 2, characterized in that: The ladle refining furnace 2 is provided with a signal transmitter 2 and a signal transmitter 3, which are connected to an external controller through wires. The signal transmitter 2 is used for temperature measurement and sampling to analyze whether the components are satisfied, and the signal transmitter 3 is used to determine whether degassing treatment is required. When the signal transmitter 2 is NO, the material in the ladle refining furnace 2 is returned to the dephosphorization converter through the transport pipeline. When the signal transmitter 2 is YSE, the signal transmitter 3 is started. When the signal transmitter 3 is YES, the ladle refining furnace 2 is connected to the VD vacuum refining furnace. When the signal transmitter 3 is NO, the ladle refining furnace 2 is connected to the continuous casting machine.