Method for evaluating conditions of blast furnace

An evaluation method and technology of blast furnace conditions, applied in the direction of comprehensive factory control, comprehensive factory control, electrical program control, etc., can solve the problems of difficult evaluation methods, single application range, and inability to promote, and achieve simple and reliable methods, good effects, Effect of reducing energy consumption

Active Publication Date: 2010-11-10
ANGANG STEEL CO LTD
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  • Application Information

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Problems solved by technology

Solve the problems caused by human factors such as experts in the past that the evaluation method is difficult to run continuously, the scope of use is single, and it cannot be promoted.

Method used

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  • Method for evaluating conditions of blast furnace
  • Method for evaluating conditions of blast furnace
  • Method for evaluating conditions of blast furnace

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Embodiment Construction

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0018] A method for evaluating blast furnace condition of the present invention comprises the following steps:

[0019] 1) The short-term, medium-term and long-term work will represent the eight main aspects of blast furnace production, including heat state, air supply fluctuation, gas flow distribution, air flow fluctuation, hearth state, slag shedding, probe and sliding material, and material speed. The status is evaluated on the basis of two different types of production parameters related to it or a variety of similar parameters related to it. The parameters and time of various aspects are determined as follows:

[0020] (1) Thermal state evaluation takes the theoretical combustion temperature of the current tuyere and the silicon content of the current molten iron as the short-term evaluation, the theoretical combustion temperature of the previous hour a...

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Abstract

The invention discloses a method for evaluating conditions of a blast furnace. The method can represent each main aspect of the working condition of the blast furnace in certain period, and two different types of relevant production parameters or the historical data of multiple relevant same-type parameters are adopted as a reference for evaluation. By taking the average value of the historical data of each parameter as the reference, a first boundary and a second boundary are determined according to the distribution of the historical data. The area in the first boundary is the NORMAL area, the area between the first boundary and the second boundary is the WARNING area, and the area outside the second boundary is the DETERIORATING area. The working condition of the aspect is described by the largest ratio of the data quantity of the data to be evaluated and falling into each area to the total data quantity to be evaluated. The overall working condition of the blast furnace is described by the weighted average. The invention solves the problems of difficult continuous running, single use range, unavailable popularization and the like of the traditional evaluating method, caused by artificial factors of specialists influence and the like, and has the advantages of simplicity, reliability, low cost and good effect.

Description

technical field [0001] The invention relates to a method for evaluating the state of an ironmaking blast furnace, in particular to a method for evaluating the state of the furnace by selecting various parameters related to blast furnace production. Background technique [0002] The blast furnace is a closed high-temperature reaction vessel. The production process is accompanied by complex physical and chemical reactions, heat transfer, and transmission processes, and its internal changes cannot be directly detected. Use the monitoring process parameters to indirectly judge the working status of the blast furnace. Generally, it is a common method to use expert knowledge base and reasoning machine to evaluate blast furnace conditions. By detecting the parameters, comparing and reasoning with the corresponding expert knowledge base, selecting a variety of parameters related to blast furnace production for evaluation, the evaluation results are represented by "Bagua diagram" or...

Claims

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Application Information

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IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 李连成车玉满孙波孙鹏郭天永
Owner ANGANG STEEL CO LTD
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