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Method and system for predicting sintering burn-through point

A technology of sintering end point and prediction method, applied in the furnace type, furnace control device, furnace and other directions, can solve the problems of low adjustment accuracy and prolonged adjustment time

Active Publication Date: 2013-04-03
ZHONGYE-CHANGTIAN INT ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the embodiment of the present application provides a method and system for predicting the end point of sintering, which can accurately predict the position of the end point of sintering on the trolley during the entire sintering process, so as to solve the problems of prolonged adjustment and low adjustment accuracy in the existing method of adjusting the end point of sintering The problem

Method used

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  • Method and system for predicting sintering burn-through point
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  • Method and system for predicting sintering burn-through point

Examples

Experimental program
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Effect test

Embodiment 1

[0037] In this embodiment, an air volume detector is directly installed in each bellows, and the air volume detector is used to detect the air volume of each bellows. Such as figure 2 As shown, in the figure, 13 is an air volume detection device, and an air volume detection device 13 is all arranged in each wind box 6 .

[0038] image 3 It is a schematic flowchart of the method for predicting the sintering end point provided in Example 1 of the present application.

[0039] Such as image 3 As shown, the method includes:

[0040] S101: Detect the air volume of each bellows.

[0041] The air volume of each air box 6 is detected by the air volume detection device 13 arranged in each air box 6 .

[0042] S102: Detect the smoke components of the large flue.

[0043] During the sintering process of the material layer, the oxygen in the air volume generated by the main exhaust fan will not be completely consumed, but only a part of the oxygen will participate in the sinterin...

Embodiment 2

[0079] Figure 5 It is a schematic flowchart of the method for predicting the sintering end point provided in Example 2 of the present application.

[0080] S201: Detect the negative pressure of the large flue.

[0081] Although in the above-mentioned embodiment, the air volume of the bellows can be detected by the air volume detector, but due to the long-term operation of the air volume detector, the detection may be inaccurate due to dust contamination, etc. The method determines the air volume of the bellows.

[0082] Such as figure 2 As shown, the negative pressure detector 14 is arranged in the large flue 7 for detecting the negative pressure in the large flue.

[0083] S202: Obtain the material layer resistance corresponding to the material ratio of the material layer.

[0084] The material layer resistance of different material ratios is different. When using negative pressure to determine the air volume, it is necessary to obtain the material layer resistance corr...

Embodiment 3

[0108] Figure 6 It is a schematic structural diagram of the sintering endpoint prediction system provided in Example 3 of the present application.

[0109] Such as Figure 6 As shown, the system includes: an air volume detection unit 60 , a smoke component detection unit 61 , an effective air rate calculation unit 62 , an effective air volume calculation unit 63 , a vertical sintering speed calculation unit 64 , an acquisition unit 65 and a position determination unit 66 .

[0110] The air volume detection unit 60 is used to detect the air volume of each wind box on the sintering machine trolley.

[0111] see figure 2 As shown, the air volume detection unit 60 can collect the air volume detected by the air volume detection device 13 disposed in each wind box 6 . In addition, in consideration of inaccurate detection caused by dust contamination and the like due to the long-term operation of the air volume detector, in this embodiment, the air volume of the bellows can be d...

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Abstract

The invention discloses a method and a system for predicting a sintering burn-through point. The method comprises the steps of: detecting the air quantity of each air blow, and detecting smoke components of a big flue; calculating the effective air rate of each air bellow according to the detected smoke components; calculating the effective air quantity of each air bellow; determining the vertical sintering speed of a material layer at the position of each air bellow; acquiring the trolley speed of a sintering trolley, the air bellow length and the material-layer thickness; and determining the position of the sintering burn-through point by using the trolley speed, the air below length and the vertical sintering speed. Compared with the prior art, the method can be used to accurately predict that the air bellow position, at which the thickness of a sintered ore layer is equal to the material-layer thickness, is the position of the sintering burn-through point by means of analyzing the air quantity and the smoke components in a material sintering process.

Description

technical field [0001] The present application relates to the technical field of sintering technology, in particular to a method and system for predicting the end point of sintering. Background technique [0002] With the rapid development of modern industry, the scale of steel production is getting larger and larger, and energy consumption is also increasing. Energy conservation and environmental protection indicators have become an important factor in the steel production process. In iron and steel production, iron-containing raw material ore needs to be processed by sintering system before entering blast furnace smelting. , placed on the sintering trolley and roasted to cause a series of physical and chemical changes to form sintered ore that is easy to smelt. This process is called sintering. [0003] The sintering system mainly includes a sintering trolley, a mixer, a main exhaust fan, a ring cooler and other equipment. For the general process, see figure 1 Shown: Var...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B21/14
CPCC22B1/20F27B21/06F27D19/00F27D21/00
Inventor 袁立新孙超卢杨权申伟杰高鹏双
Owner ZHONGYE-CHANGTIAN INT ENG CO LTD