Silicon reducing device of European smelting furnace
By designing the silicon reduction device of Ouye Furnace, the reaction of iron waste heat and ferrous oxide solid waste in the torpedo tank is used to achieve rapid silicon reduction of Ouye Furnace, and the problem of high iron-silicon extending steelmaking time and bonding to torpedo tanks is solved.
Patent Information
- Application Number
- CN202421138311.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-05-23
AI Technical Summary
The Ouye furnace produces high ferrosilicon during the furnace opening and maintenance process, resulting in a prolonged steelmaking smelting time, and high ferrosilicon can easily bind to the torpedo tank.
A silicon-reducing device for Ouye furnace is designed to desilice using the residual heat of molten iron, and then slag is removed through the steel-making torpedo tank to achieve silicon-reducing. The specific implementation method is to input solid waste containing ferrous oxide into a torpedo tank, react with hot molten iron to generate silica and iron, and achieve the desilice effect.
Through the Ouye Furnace Molecular Silicon Reduction Device, the problem of high-ferrosilicon extending the steelmaking smelting time is solved, the rapid silicon reduction of molten iron is achieved, and the problem of high-ferrosilicon bonding torpedo tanks is avoided.
Smart Images
Figure CN222923173U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a silicon reduction device for an Ouye furnace. Background Art
[0002] The Ouye furnace is a non-blast furnace ironmaking device. Its principle mainly utilizes the combustion of fuel under high-temperature conditions to generate a large amount of heat energy, reduce and melt iron ore, and react with fluxes and fluxing agents at high temperature to separate iron and molten steel. The biggest feature of the Ouye furnace is that it can directly use low-grade iron ore and has high production efficiency. Its technological process mainly includes aspects such as burden pretreatment, iron ore reduction and melting, molten steel separation, slag treatment, and metallurgical reaction kinetics. The Ouye furnace has been widely used in China and other countries and is one of the important metallurgical devices. During the start-up and repair and restart processes of the Ouye furnace, high-silicon hot metal is generated, resulting in an extended steelmaking smelting time.
[0003] Existing problems: High-silicon hot metal prolongs the steelmaking smelting time, resulting in slower utilization efficiency of torpedo ladles, insufficient torpedo ladles, and high-silicon hot metal being prone to sticking to torpedo ladles. Summary of the Invention
[0004] The purpose of the utility model is to provide a silicon reduction device for an Ouye furnace, which can utilize the waste heat of hot metal for desiliconization and achieve silicon reduction of hot metal after slag skimming in the steelmaking torpedo ladle.
[0005] The technical solution of the utility model is realized as follows: A silicon reduction device for an Ouye furnace includes an Ouye furnace and an iron hot metal torpedo ladle. The iron notch of the Ouye furnace is connected to the main iron runner, a swing nozzle is arranged below the end of the main iron runner, and the iron hot metal torpedo ladle is arranged below one side of the swing nozzle; a desiliconizing agent funnel is arranged directly above the mouth of the iron hot metal torpedo ladle. An operation platform and a side suction dust removal device are respectively arranged on the side of the funnel from top to bottom. The dust removal pipeline of the side suction dust removal device passes through a bag filter housing and a dust removal fan in sequence and is connected to a chimney.
[0006] Solid waste containing ferrous oxide is transported to the tapping yard by vehicle. Through the control of the gate on the desiliconizing agent funnel, the solid waste containing ferrous oxide is input into the torpedo ladle. By using the stirring action of the falling hot metal, the solid waste containing ferrous oxide in the torpedo ladle reacts with silicon in the hot and molten iron to generate silicon dioxide and iron, achieving the effect of desiliconizing the hot metal of the Ouye furnace.
[0007] Through the silicon reduction structure of the Ouye furnace hot metal, the problem that high-silicon hot metal is generated during the start-up and repair and restart processes of the smelting furnace, resulting in an extended steelmaking smelting time, is solved, and rapid silicon reduction of the Ouye furnace hot metal is achieved. Through silicon reduction, the problem that high-silicon hot metal is prone to sticking to torpedo ladles is solved. Brief Description of the Drawings
[0008] Figure 1 It is a schematic structural diagram of an embodiment of the utility model. Specific implementation mode
[0009] For the embodiments, please refer to Figure 1 ,
[0010] A silicon reduction device for an Ouye furnace includes an Ouye furnace 1 and a hot metal torpedo ladle 5. The taphole 2 of the Ouye furnace is connected to the main hot metal runner 3. A swing nozzle 4 is arranged below the end of the main hot metal runner 3. The above-mentioned hot metal torpedo ladle 5 is arranged below one side of the swing nozzle 4. A desiliconizing agent hopper 6 is arranged directly above the mouth of the hot metal torpedo ladle 5. An operation platform and a side suction dust removal device 8 are respectively arranged on the side of the hopper 6 from top to bottom. A vehicle 7 on the operation platform transports solid waste containing ferrous oxide. The dust removal pipeline 9 of the side suction dust removal device 8 passes through a bag filter housing 10 and a dust removal fan 12 in sequence and is connected to a chimney 11.
[0011] Illustrated by the schematic diagram of the silicon reduction device for the Ouye furnace Figure 1 It is described as follows. The hot metal of the Ouye furnace flows out from the taphole 2, passes through the main runner 3 and the swing nozzle 4 and enters the torpedo ladle 5. The desiliconizing agent is added into the desiliconizing agent hopper 6 by the vehicle 7. The falling speed is controlled by the gate and added into the torpedo ladle 5. By using the stirring action of the falling hot metal, the solid waste containing ferrous oxide in the torpedo ladle reacts with the silicon in the hot and molten iron to generate silicon dioxide and iron, achieving the effect of desiliconizing the hot metal of the Ouye furnace. The generated soot enters the dust removal pipeline 9 through the side suction dust removal device 8. After being purified by the bag filter housing 10, the dust removal fan 12 discharges the purified qualified gas into the atmosphere along the chimney 11.
Claims
1. A silicon reduction device for an Ouye furnace, comprising an Ouye furnace and a molten iron torpedo tank, characterized in that: The iron mouth of Ouye furnace is connected to the main molten iron groove, a swinging flow nozzle is arranged below the end of the main molten iron groove, and the molten iron torpedo tank is arranged below one side of the swinging flow nozzle; a desiliconizer funnel is arranged just above the tank mouth of the molten iron torpedo tank, and an operating platform and a side suction dust removal device are arranged on the sides of the funnel from top to bottom respectively, and the dust removal pipeline of the side suction dust removal device passes through the bag box and the dust removal fan in turn, and is connected to the chimney.