Method of determining different stock line (Sl) compensation angles in blast furnace burden distribution process

A technology for compensating angles and material lines, applied to blast furnaces, blast furnace details, furnaces, etc., can solve problems such as large randomness, lack of test and theoretical basis for accuracy, and improve accuracy, improve drop point accuracy, and reduce deviation moving effect

Active Publication Date: 2018-02-02
武汉钢铁有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The compensation angle in " is also an estimation, the accuracy lacks experimental and theoretical basis, and the randomness is too large

Method used

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  • Method of determining different stock line (Sl) compensation angles in blast furnace burden distribution process
  • Method of determining different stock line (Sl) compensation angles in blast furnace burden distribution process
  • Method of determining different stock line (Sl) compensation angles in blast furnace burden distribution process

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Embodiment Construction

[0047] Embodiments of the present invention are described in detail with reference to the accompanying drawings.

[0048] Take a 3400m 3 Take the blast furnace as an example. The blast furnace is equipped with a bellless distribution device. The length of the chute is 3.8 meters and the diameter of the chute is 750mm. Taking the distribution of coke as an example, there are 11 distribution corners in total. When the chute is placed at 11 corners, the material flow trajectory is as follows: figure 1 shown.

[0049] Step 1) The coordinate solution unit of the intersection point coordinates of each chute's corner charging charge trajectory and the reference material line:

[0050] As shown in Table 1, the trajectory drop points of the actual measured material distribution trajectory on the material line of 0, 1, 2, and 3 meters are shown in Table 2 when the furnace is turned on.

[0051] Table 1 11 fabric corner positions

[0052]

1

2

3

4

5

6

7 ...

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Abstract

The invention provides a method of determining different stock line (Sl) compensation angles in a blast furnace burden distribution process, and belongs to the technical field of blast furnace smelting. The method calculates specific chute dip angles, for maintaining the same falling point abscissas in burden line changing, through changing rates of burden distribution dip angles, which correspondto unit falling point abscissas, on the basis of angle position burden flow trajectory data measured in furnace opening. According to the method, determination of the compensation angles is based onexperiment data, man-made errors are reduced, error reduction provides a basis for precise burden distribution, an accuracy rate of dispensing is increased in a case where huge fluctuation of furnaceconditions exists, and a burden distribution guarantee is provided for timely recovery of the furnace conditions. A falling point accuracy rate can be greatly increased through theoretical calculation, and the method provides different compensation angle positions for stock lines of 0.5-meter intervals, refines compensation intervals, reduces deviation of furnace burden falling points, and can control falling point radius errors to be below 3%.

Description

technical field [0001] The invention belongs to the technical field of blast furnace material distribution, and specifically provides a method for determining compensation angles of different material lines during the blast furnace material distribution process. Background technique [0002] The operation of the blast furnace is achieved through the matching of the upper and lower parts of the operation to achieve the smooth progress of the blast furnace smelting process. The blast operation is mainly completed in the lower part of the blast furnace, and the charging of the charge is completed in the upper part of the blast furnace. For nearly half a century, the blast furnace has mainly relied on two devices to realize the charge One is a bell-type distributor, and the other is a material-free bell distributor, as shown in the document "Edited by Zhou Chuandian, Technical Handbook of Blast Furnace Ironmaking Production, Metallurgical Industry Press, 2002, P217-231." Bell cl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/16C21B5/00
CPCC21B5/00G06F17/16
Inventor 陈令坤邹祖桥尹腾
Owner 武汉钢铁有限公司
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