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A device and application method for improving the blowing rate of air-blowing bricks at the bottom of the ladle

A technology of breathable bricks and ladles, applied in safety devices, manufacturing tools, casting melt containers, etc., can solve the problems of affecting the removal effect of inclusions, affecting the life of breathable bricks, and small flow, avoiding excessive oxygen burning for cleaning, improving The effect of service life and labor intensity reduction

Active Publication Date: 2022-06-28
LAIWU STEEL YINSHAN SECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (2) When the ladle pouring is completed and the off-line treatment is completed, the permeable bricks are manually cleaned by burning oxygen. The time and effect of each treatment depend entirely on the experience of the operator. After the treatment, the permeable bricks still have different degrees of blockage and air leakage Phenomenon, the flow rate of the bottom blowing argon of the breathable brick is small in the early stage or the bottom blowing cannot be opened, which affects the removal effect of inclusions; the breathable brick is damaged by excessive oxygen burning, which seriously affects the life of the breathable brick

Method used

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  • A device and application method for improving the blowing rate of air-blowing bricks at the bottom of the ladle
  • A device and application method for improving the blowing rate of air-blowing bricks at the bottom of the ladle
  • A device and application method for improving the blowing rate of air-blowing bricks at the bottom of the ladle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] A device for improving the blow-through rate of air-blow-through bricks at the bottom of the ladle, such as Figure 1-3 As shown, it includes gas circuit control cabinet 1, electrical control cabinet 2, light tower 3, on-site large-screen display 5 and high-performance check valve 10, and electrical control cabinet 2 is equipped with programmable logic controller PLC 6, touch screen 4 and switch The button 7, the light tower 3 are arranged on the top of the electrical control cabinet 2, the on-site large-screen display 5 is arranged in the visible position of the online processing station of the ladle breathable brick, and the gas circuit control cabinet 1 is provided with a gas circuit control unit 8 and a gas source inlet. and air outlet;

[0063] The programmable logic controller PLC 6 includes a CPU, a digital processing module, an analog processing module and a communication module;

[0064] The programmable logic controller PLC 6 is connected to the gas circuit c...

Embodiment 2

[0105] A kind of device and application method for improving the blowing rate of ladle bottom blowing air bricks as described in embodiment 1, the difference is:

[0106] The invention is used for a 100t electric furnace ladle, and the ladle is provided with two dispersive bottom-blown ventilation bricks. The application method of the device for improving the blowing rate of the ladle bottom-blown ventilation bricks includes the following steps:

[0107] 1) Leakage inspection before initial use: connect the air source outlet of the air circuit control cabinet 1 to the quick connector 24 on the air inlet pipe of the breathable brick to be tested, operate the touch screen 4, open the "test calibration interface", and press "point to detect leakage". ” soft button to activate the point leak detection function: the device outputs a small flow, from the detection screen, you can see that the branch back pressure slowly rises to more than 5 bar, and you can also see that the flow val...

Embodiment 3

[0122] A kind of device and application method for improving the blowing rate of ladle bottom blowing air bricks as described in embodiment 1, the difference is:

[0123] The present invention is used for 120t converter ladle argon blowing nozzle block, a dispersion type air-permeable nozzle block, and the application method of the device for improving the blow-through rate of the ladle bottom-blown air-blow block comprises the following steps:

[0124] 1) Leakage inspection before initial use: connect the air source outlet of the air circuit control cabinet 1 to the quick connector 24 on the air inlet pipe of the breathable brick to be tested, operate the touch screen 4, open the "test calibration interface", and press "point to detect leakage". ” soft button to activate the point leak detection function: the device outputs a small flow, from the detection screen, you can see that the branch back pressure slowly rises to more than 5 bar, and you can also see that the flow valu...

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Abstract

The invention relates to a device and an application method for improving the blow-through rate of the ladle bottom blowing air brick. The device includes a gas circuit control cabinet, an electrical control cabinet, a lighthouse, a large-screen display on site, and a high-performance check valve. It is equipped with programmable logic controller PLC, touch screen and switch button, the lighthouse is set on the top of the electrical control cabinet, the on-site large-screen display is set at the visible position of the online processing station of the ladle breathable brick, and the gas circuit control cabinet is equipped with a gas circuit The control unit, the gas source inlet and the gas source outlet have the functions of online automatic testing of gas permeability and automatic purging of the gas permeable brick. The application of the present invention solves the problem that the gas permeable brick is completely blown and the pipeline forms a negative pressure after the gas source is disconnected. The problem of liquid inhalation into the ventilation channel has been solved, and the recovery rate of the ventilation brick is 100%, which improves the life of the ventilation brick.

Description

technical field [0001] The invention relates to a device and an application method for improving the blowing rate of a ladle bottom blowing air-permeable brick, and belongs to the technical field of steelmaking technology in iron and steel metallurgy. Background technique [0002] Ladle bottom blowing with argon is a simple and efficient out-of-furnace refining technology, which can homogenize the composition and temperature of molten steel, promote the physical and chemical reaction of molten steel refining and the floating of inclusions, and is widely used at home and abroad. The air-permeable brick is the most critical functional component of the bottom blowing of the ladle. The blow-through rate and air permeability of the air-permeable brick are the technical keys to ensure the effect and smooth implementation of the bottom-blowing argon metallurgy. [0003] In recent years, the technology of argon blowing throughout the ladle has been popularized and applied, but the e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D41/58B22D46/00C21C7/072
CPCB22D41/58B22D46/00C21C7/072
Inventor 武光君朱建武文健王金龙
Owner LAIWU STEEL YINSHAN SECTION CO LTD