Method and device for determining thickness change of slag crust of copper cooling wall of blast furnace

Inactive Publication Date: 2017-05-17
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the embodiment of the present invention provides a method and device for determining the change of the thickness of the slag skin of the copper cooling wall of the blast

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  • Method and device for determining thickness change of slag crust of copper cooling wall of blast furnace
  • Method and device for determining thickness change of slag crust of copper cooling wall of blast furnace

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Embodiment 1

[0040] This embodiment provides a method for determining the thickness variation of blast furnace copper stave slag skin, see figure 1 , the method includes:

[0041] S101. Determine the average temperature value of the copper stave and the temperature value of the water entering the stave according to the historical data of the blast furnace.

[0042] In this step, the historical data of blast furnace production is obtained, the average temperature value of each section of copper stave is calculated, and then the first difference between the average temperature value of copper stave and the inlet water temperature value of stave is calculated; and according to the blast furnace economic index Determine the optimal control range of the first difference between the average temperature of the copper stave and the inlet water temperature of the stave.

[0043] Here, the economic indicators of the blast furnace may include: gas utilization rate, iron tapping amount of the blast f...

Embodiment 2

[0054] Corresponding to Embodiment 1, this embodiment also provides a device for determining the thickness variation of blast furnace copper stave slag skin, see figure 2 , the device includes: a first determination unit 21, a calculation unit 22 and a second determination unit 23; wherein,

[0055] The first determination unit 21 is used to determine the average temperature value of the copper stave and the temperature value of the water entering the stave according to the historical data of the blast furnace. Specifically, after the first determination unit 21 obtains the historical data of blast furnace production, calculates the average temperature value of each copper stave, and then calculates the first value between the average temperature value of the copper stave and the inlet water temperature value of the stave. After the difference; and determine the optimal control range of the first difference between the average temperature of the copper stave and the inlet wat...

Embodiment 3

[0066] In practical application, when utilizing the method that embodiment one provides and the device that embodiment two provides to determine certain 4000m3 level blast furnace copper stave slag skin thickness, specifically as follows:

[0067] Copper staves are used in the blast furnace bosh, furnace waist, and the bottom 6 to 9 sections of the furnace shaft in this embodiment. The historical data of blast furnace production are obtained, and the average temperature values ​​of the copper staves in each section are calculated, and then the average temperature of the copper staves is calculated. The first difference between the temperature value and the inlet water temperature of the stave; and determine the optimal control range of the first difference between the average temperature of the copper stave and the inlet water temperature of the stave according to the economic index of the blast furnace. Here, the economic indicators of the blast furnace may include: gas utiliz...

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Abstract

The invention provides a method and a device for determining thickness change of slag crust of a copper cooling wall of a blast furnace. The method comprises steps of according to historical data of the blast furnace, determining a first difference value of an average temperature value of each segment of the copper cooling wall and the water charging temperature value of the cooling wall; determining an optimal control range of the first difference value, wherein the first difference value has the inversely proportional relationship with the thickness of the slag crust; calculating a second difference value of the average temperature value of each segment of the copper cooling wall and the water charging temperature value of the cooling wall; and comparing the second difference value with data in the optimal control range of the first difference value so as to obtain thickness change of the slag crust. In this way, when the thickness change of the slag crust is determined, the temperature of the cooling wall and the water charging temperature of the cooling wall are comprehensively considered, so the first difference value can be largely regarded as the temperature gradient from a temperature measurement point to the interior of a cooling water pipe. By using the difference value of the temperature to judge the thickness of the slag crust, judgment precision is improved, gas utilization rate is improved and fuel ratio is reduced, thereby improving stability of the furnace condition of the blast furnace.

Description

technical field [0001] The invention belongs to the technical field of blast furnace ironmaking, and in particular relates to a method and a device for determining the thickness variation of slag skin on a copper cooling wall of a blast furnace. Background technique [0002] Modern large-scale blast furnaces already have a high level of mechanization and automation, but due to the complexity of physical changes and chemical reactions inside the blast furnace, although a large number of detection devices such as thermocouples and furnace body pressure points are installed on the blast furnace body, the blast furnace still has no To get rid of the characteristics of "black box", the production of blast furnace still needs to rely on experience for smelting operation. [0003] The thickness of the slag skin on the hot surface of the blast furnace stave affects the stability of the blast furnace condition, the normal operation of the cooling equipment and the technical and econo...

Claims

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Application Information

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IPC IPC(8): G01B21/08
CPCG01B21/085
Inventor 刘栋梁余珊珊张庆喜董遵敏宋春晖高艳伟胡正刚卢正东李红
Owner 武汉钢铁有限公司
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