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Automatic tapping method for converter based on converter volume model and converter system

A converter and automatic technology, applied in the manufacture of converters, etc., can solve problems such as high steel flow temperature, longer tapping time, and more dust on site

Active Publication Date: 2020-10-23
WISDRI ENG & RES INC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no scientific basis for manual control of the converter angle. If the manual shaking of the furnace is too fast, the slag or molten steel will easily overflow from the furnace mouth, causing accidents; , the slag floating above the molten steel is drawn into the steel flow and falls into the ladle, which affects the quality of the molten steel, and also causes the flow rate of the steel flow to be too low, resulting in longer tapping time
The position of the manual console car is mainly based on the naked eye observation of the steel flow and the center of the ladle on the trolley. The temperature of the steel flow is high, the radiation is large, the site is dusty, the noise is loud, the manual operation environment is poor, and it is easy to fatigue, which may cause molten steel to spill out of the ladle. accident

Method used

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  • Automatic tapping method for converter based on converter volume model and converter system
  • Automatic tapping method for converter based on converter volume model and converter system
  • Automatic tapping method for converter based on converter volume model and converter system

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Experimental program
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Embodiment 1

[0038] like Figure 1-Figure 3 , the embodiment of the present invention provides a converter automatic tapping method based on the converter volume model, comprising the following steps:

[0039] S1, calculate the converter volume model h=P(θ, V), V=Q(θ, h) and θ=R(V, h) according to the converter furnace type parameters, where θ is the tilting angle of the converter, and V is the furnace The volume of the molten liquid contained in it, h is the height of the liquid level, and the height of the liquid level is the height difference between the liquid level of the molten liquid and the tapping hole.

[0040]Among them, h=P(θ, V) represents the corresponding relationship between the liquid level height and the melt volume at different converter tilting angles; V=Q(θ, h) represents the melt volume at different converter tilting angles Correspondence between liquid level height; θ=R(V, h) represents the tilting angle of the converter required to reach a certain set liquid level ...

Embodiment 2

[0063] An embodiment of the present invention provides a converter system for realizing the above-mentioned automatic tapping method of the converter, including a converter 1, the converter 1 is equipped with a slag lowering detection device 4 and a slag blocking device 11, and further includes:

[0064] Ladle volume measuring instrument, used to measure the real-time molten steel volume in the ladle;

[0065] The infrared camera 2 behind the furnace is installed on the platform behind the furnace, and is used to take infrared images of the tap hole and the furnace mouth of the converter during the tapping process of the converter 1;

[0066] Converter tilting angle detection device 7, used to detect the tilting angle of the converter 1;

[0067] Tapping control center 5, which receives the feedback information from the ladle volume measuring instrument, the infrared camera 2 behind the furnace, the converter tilting angle detection device 7 and the slag dropping detection devic...

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Abstract

The invention relates to an automatic tapping method for a converter. The method comprises the following steps that converter volume models h = P (theta, V), V = Q (theta, h) and theta = R (V, h) arecalculated according to converter profile parameters; a tapping hole is opened, the converter tilts and rotates, the tapping hole is closed when slag flows out of the tapping hole, and the initial molten liquid volume V1 in the converter is calculated according to the converter tilting angle theta1 at the moment, wherein V1 = Q (theta1, 0); the converter rotates to theta2, theta2 = R (V1, h0), andtapping is started; the volume Va of the molten steel in the furnace and the actual liquid level ha = P (theta, Va) in the furnace are calculated according to the real-time volume V2 of the molten steel in a steel ladle; the relative size between the melt liquid level reference threshold hs and ha is judged, if ha is smaller than hs, the converter tilts continuously , and ha is repeatedly calculated until ha = hs, and the converter is stopped from rotating; and after tapping is completed, the tapping hole is closed. Correspondingly, the invention provides a converter system. The method can continuously control the height of the liquid level of the molten liquid in the furnace in real time, is simple, controllable and reliable to operate, effectively prevents the overflow accident of the furnace mouth while realizing automatic tapping, and greatly shortens the tapping time.

Description

technical field [0001] The invention belongs to the technical field of converter smelting, and in particular relates to a converter automatic tapping method based on a converter volume model and a converter system for realizing the converter automatic tapping method. Background technique [0002] After the converter is smelted, it is necessary to tilt the furnace body through the tilting mechanism, so that the molten steel in the furnace flows out from the tapping hole under the furnace cap to the ladle on the trolley under the furnace. This operation process is called the converter tapping operation. The main requirements for the tapping operation are: (1) slag is not allowed to flow out from the tapping port; (2) slag or molten steel is not allowed to flow out from the furnace port; (3) the tapping time is as short as possible; (4) the console car moves Ensure that the molten steel will all fall into the ladle, that is, the falling point of the steel flow is preferably kep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/28C21C5/42
CPCC21C5/28C21C5/42
Inventor 蔡炜
Owner WISDRI ENG & RES INC LTD