Refining method for preventing carbureting of molten steel in LF (ladle furnace) through utilizing argon plasmas
A technology of plasma and plasma arc, which is applied in the field of steelmaking and refining in the metallurgical industry, can solve the problems of reducing the contact time between electrodes and molten steel, can not fundamentally solve the problem of carburization, and increase electrode consumption, so as to shorten the heating time and smelting cycle, reduce the smelting Steel process, the effect of preventing carburization of molten steel
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0021] 120t AC LF refining furnace, the original solid graphite electrode is replaced by a hollow graphite electrode, the voltage is 360V, the current is 48000A, the hole diameter of the hollow graphite electrode is 9mm; the hollow graphite electrode is connected to the Ar gas source device through the pipeline, and installed on the pipeline Solenoid valve and flow meter are used to control and detect the carrier gas flow, and the gas flow can be controlled and switched off through PLC control; when refining starts, 1000NL / min argon gas is introduced through the center hole of the hollow graphite electrode to eliminate the ladle cover and steel Then insert the hollow graphite electrode between the liquid steel surface and the slag surface, adjust the argon gas flow rate to 2NL / min per ton of steel, turn on the power to make the hollow graphite electrode arc, and after the arc is stable, increase The flow rate of argon gas is 10NL / min per ton of steel, and the carrier gas genera...
Embodiment 2
[0023] For a 150t three-phase AC LF refining furnace, replace the solid graphite electrode used previously with a hollow graphite electrode, with a voltage of 390V, a current of 50,000A, and a hole diameter of 20mm in the hollow graphite electrode; Electromagnetic valves and flow meters are installed on the road to control and detect the flow of carrier gas, and the gas flow control and switch closure can be realized through PLC control; when starting refining, 1000NL / min argon gas is introduced through the center hole of the hollow graphite electrode to remove the ladle cover Then insert the hollow graphite electrode between the molten steel surface and the slag surface, adjust the argon gas flow rate to 2NL / min per ton of steel, turn on the power to make the hollow graphite electrode arc, and after the arc is stable, Increase the flow of argon gas to 12NL / min per ton of steel, the carrier gas generates plasma under the action of the arc, and use the plasma source to heat the ...
Embodiment 3
[0025] For a 60t three-phase AC LF refining furnace, replace the solid graphite electrode used previously with a hollow graphite electrode, with a voltage of 240V and a current of 35,000A. The hole diameter of the hollow graphite electrode is 12mm; Electromagnetic valves and flow meters are installed on the road to control and detect the carrier gas flow, and the gas flow control and switch closure can be realized through PLC control; when refining starts, 100NL / min argon gas is introduced through the center hole of the hollow graphite electrode to remove the ladle cover Then insert the hollow graphite electrode between the liquid steel surface and the slag surface, adjust the argon flow rate to 0.5NL / min per ton of steel, turn on the power to make the hollow graphite electrode arc, and wait for the arc to stabilize , increase the argon flow to 5NL / min per ton of steel, the carrier gas generates plasma under the action of the arc, and use the plasma source to heat the molten st...
PUM
Property | Measurement | Unit |
---|---|---|
diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com