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Method, device and system for controlling furnace conditions of convertor steelmaking

A converter steelmaking and converter technology, which is applied in the manufacture of converters, etc., can solve problems such as poor control effects, and achieve the effects of overcoming poor stability, improving stability, and precise control

Active Publication Date: 2012-02-29
田陆
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Problems solved by technology

[0006] The main purpose of the present invention is to provide a method, device and system for controlling the furnace conditions of converter steelmaking, so as to solve the problem in the prior art that the control method is affected by the lowering of the converter smoke hood and the slag accumulation at the furnace mouth, and the control effect is poor

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  • Method, device and system for controlling furnace conditions of convertor steelmaking
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  • Method, device and system for controlling furnace conditions of convertor steelmaking

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Embodiment Construction

[0033] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0034] figure 1 is a schematic diagram of a converter steelmaking furnace condition control method according to an embodiment of the present invention, such as figure 1 As shown, the method mainly includes the following steps:

[0035] Step S11, obtaining CO and CO in the furnace gas composition 2 Wait for the gas content, and record the oxygen blowing amount and feeding amount of the converter;

[0036] Step S13, according to CO and CO 2 Calculate the oxygen potential of the slag based on the content of the gas, the amount of oxygen blown into the converter, and the amount of feed;

[0037]Step S15, querying the allowable range of the slag oxygen potential from the data relationship graph...

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Abstract

The invention provides a method, a device and a system for controlling furnace conditions of convertor steelmaking. By the method, the device and the system, the problem that a control effect is influenced by the descending of a convertor smoke hood and accumulated slag at a furnace mouth and the problem of poor control accuracy in the prior art are solved. The method comprises the following steps of: acquiring the content of CO and CO2 in furnace gas ingredients, and recording the oxygen blowing amount of a convertor and charging quantity; calculating slag oxygen potential according to the content of the CO and the CO2, the oxygen blowing amount of the convertor and charging information; inquiring the permission range of the slag oxygen potential from a data relational graph of the slag oxygen potential and the total oxygen blowing amount according to the oxygen blowing amount of the convertor, comparing the permission range of the slag oxygen potential with the calculated slag oxygen potential, and outputting spattering forecast information or drying return forecast information according to a comparison result; and controlling the oxygen blowing operation according to the forecast information. Due to the adoption of the technical scheme, the defect of poor stability of control by artificial experience is overcome; and compared with the conventional sonar slag-reducing method, the method has the advantages that: the control effect is not influenced by the descending of the convertor smoke hood and the accumulated slag at the furnace mouth; the control is more accurate; and the stability of the smelting process is improved.

Description

technical field [0001] The invention relates to a method, device and system for controlling the furnace condition of a converter for steelmaking. Background technique [0002] Converter steelmaking is currently the main steelmaking method, and its steel production accounts for more than 60% of the total steel production. People have always paid attention to improving the control level of converter steelmaking. Abnormal furnace conditions such as splashing and dry back disturb the normal The smelting operation reduces the metal yield, affects the dephosphorization effect, and endangers the safety of the furnace operators. Therefore, stabilizing the smelting process and reducing the occurrence of splashing and back-drying have always been the research goals of metallurgists. [0003] The traditional control method of converter steelmaking furnace condition is to observe the state of slag manually. The procedure is generally to observe the flame characteristics of the furnace ...

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Application Information

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IPC IPC(8): C21C5/30C21C5/46
Inventor 田陆刘卓民周存波
Owner 田陆
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