Method for calculating blast furnace burden distribution drop point based on laser measurement data

A laser measurement and data calculation technology, applied in blast furnaces, blast furnace details, furnaces, etc., can solve the problems of long lag of distribution to furnace conditions, confusing blast furnace operators to accurately grasp, etc., to achieve good accuracy, reduce energy consumption, improve The effect of utilization

Inactive Publication Date: 2021-11-26
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For Meishan Iron and Steel Blast Furnace, it takes 6-8 hours for the charge to reach the tuyere from the top of the furnace. Observing and detecting the direct changes in the position of the material drop point and the shape of the material surface after the change of the material distribution system can only be based on experience to formulate a plan. Feedback with a long lag often confuses the blast furnace operator's accurate grasp of the furnace condition. Therefore, it is necessary to Quantitatively describe the positions of the charge drop points corresponding to different material distribution systems, so as to provide accurate and effective operation ideas for blast furnace operators

Method used

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  • Method for calculating blast furnace burden distribution drop point based on laser measurement data
  • Method for calculating blast furnace burden distribution drop point based on laser measurement data
  • Method for calculating blast furnace burden distribution drop point based on laser measurement data

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Embodiment 1

[0026] Embodiment 1: see figure 1 , a method for calculating a blast furnace cloth drop point based on laser measurement data, said method comprising the following steps: Step 1: calibration of basic data;

[0027] Step 2: Division of calculation scope;

[0028] Step 3: Calculation of any angle under the basic material line;

[0029] Step 4: Calculate the inclination angle of any chute under any material line.

[0030] Step 1: Calibration of the basic data, as follows,

[0031] While the blast furnace is charging, use the manhole on the top of the furnace and use the space grid device to form a spatial coordinate system in the furnace, and use the laser measurement method to continuously capture the images of the material flow trajectory of the ore and coke at 5 to 20 angles , process the ingested images by computer to obtain the drop point data at the next 5-15 fixed material lines at the base angle, organize the data as shown in Table 3, and then complete the calibration;...

specific Embodiment 1

[0042] Specific embodiment 1: a method for calculating the falling point of blast furnace cloth based on laser measurement data, the method includes the following steps: Step 1: calibration of basic data;

[0043] Step 2: Division of calculation scope;

[0044] Step 3: Calculation of any angle under the basic material line;

[0045] Step 4: Calculate the inclination angle of any chute under any material line, as follows:

[0046] 1. Taking a blast furnace as an example, calculate the ore distribution point when the inclination angle of the chute is 37° and the material line is 1.3m.

[0047] 2. When the blast furnace was started, the material flow trajectory of the ore under the basic chute inclination angle and the basic material line was measured. The measurement results are shown in the attached figure 2 , the corresponding drop point position is attached figure 2 The intersection of the material flow trajectory of the inclination angle of the middle base chute and the...

specific Embodiment 2

[0058] Specific embodiment 2: a method for calculating the blast furnace cloth drop point based on laser measurement data, the method includes the following steps: Step 1: calibration of basic data;

[0059] Step 2: Division of calculation scope;

[0060] Step 3: Calculation of any angle under the basic material line;

[0061] Step 4: Calculate the inclination angle of any chute under any material line, as follows:

[0062] 1. Taking a blast furnace as an example, calculate the coke distribution point when the inclination angle of the chute is 34.5° and the material line is 1.2m;

[0063] 2. When the blast furnace was opened, coke was measured at the inclination angle of the base chute and the material flow trajectory under the base material line. The measurement results are shown in the attached image 3 , the corresponding drop point position is attached image 3 The intersection of the material flow trajectory of the inclination angle of the medium base chute and the dot...

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Abstract

The invention relates to a method for calculating a blast furnace burden distribution drop point based on laser measurement data. The method comprises the following steps of 1, calibrating basic data; 2, dividing a calculation range; 3, calculation of any angle under a basic stock line; and 4, calculating the inclination angle of any chute under any stock line. According to the technical solution, on the basis of material flow data measured by laser when a blast furnace is opened, a series of derivation calculation methods are used for calculating the material distribution drop points of ore and coke at different chute inclination angles and different material lines, and accurate basic data are provided for fine adjustment of an upper system of the blast furnace.

Description

technical field [0001] The invention relates to a method, in particular to a method for calculating the falling point of blast furnace material distribution based on laser measurement data, and belongs to the technical field of blast furnace ironmaking. Background technique [0002] The material distribution is one of the important operation control contents of the blast furnace. Using the change of the charging system to control the distribution of the furnace material is called the top adjustment. The basic principle is to use the function of the furnace top charging device and the characteristics of the charge to control the position of the drop point, the thickness of the pile, the shape of the radial section, the particle size and the radial and circumferential distribution of the variety when the charge is loaded into the furnace to meet the requirements of the blast furnace. The basic requirement of the smelting process is to achieve a reasonable distribution of the g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B5/00C21B7/24C21B7/20
CPCC21B5/00C21B7/24C21B7/20
Inventor 孙俊杰毕传光陈晨
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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