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Method for optimizing RH dynamic decarburization based on flue gas analysis

A technology of flue gas analysis and optimization method, which is applied in the field of iron and steel metallurgy RH refining, can solve the problems of no operability and no implementation method, and achieve the effect of improving the analysis level, great promotion value, and good application effect

Active Publication Date: 2018-01-26
ANGANG STEEL CO LTD
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Problems solved by technology

Although the patent proposed based on the CO, CO in the exhaust gas 2 The idea of ​​predicting the carbon content of molten steel, but no specific implementation method is provided, so it is not operable

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  • Method for optimizing RH dynamic decarburization based on flue gas analysis

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Embodiment Construction

[0044] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0045] A RH dynamic decarburization optimization method based on flue gas analysis, comprising the following steps:

[0046] 1) The data acquisition and processing system collects, analyzes and processes exhaust gas components and exhaust gas flow data in the RH production process in real time, and transmits them to the RH control system;

[0047] 2) In the RH control system, the RH dynamic decarbonization model is established according to the RH production system data and actual production needs; the specific process is as follows:

[0048] The carbon contents of the molten steel in the ladle and the molten steel in the vacuum chamber are respectively CL and Cv. For the molten steel in the ladle, according to the principle of mass conservation of carbon content in the molten steel, the decarburization mathematical equation can be expressed by for...

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Abstract

The invention relates to a method for optimizing RH dynamic decarburization based on flue gas analysis. The method comprises the following steps that: 1) a data acquisition and processing system acquires, analyzes and processes exhaust gas component data and exhaust gas flow data in RH production in real time and transmits the data to a RH control system; 2) a RH dynamic decarburization model is established in the RH control system according to the data of the RH control system and practical demands of production; 3) a data analysis and reasoning module arranged in the RH control system carries out further analysis and processing on results output by the RH dynamic decarburization model by using a fuzzy control method based on a neural network; and 4) accurately monitoring the carbon content of molten steel and timely adjusting the technological parameters of decarburization so as to eventually increasing the hit rate of the carbon content at a terminal point. The method provided by the invention provides important technical means for controlling and improving molten steel treatment quality under RH vacuum refining production conditions and has good operability and practical application effect.

Description

technical field [0001] The invention relates to the technical field of iron and steel metallurgy RH refining, in particular to an RH dynamic decarburization optimization method based on flue gas analysis. Background technique [0002] With the development of manufacturing industries such as automobiles, home appliances and machinery, the demand for ultra-low carbon steel is increasing. The RH vacuum refining process has become one of the methods commonly used in the production of ultra-low carbon steel at home and abroad because of its good decarburization ability. The decarburization reaction takes place in the molten steel in the molten pool in the vacuum chamber. Due to the blowing of the lifting gas and the reduction of the pressure of the vacuum chamber, the molten steel circulates between the ladle and the vacuum chamber at a certain circulation flow rate, during which a decarburization reaction occurs, and the resulting product is discharged with the exhaust gas, ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/10C21C7/068
Inventor 李立勋赵雷金百刚费鹏
Owner ANGANG STEEL CO LTD
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