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Method for acquiring material flow characteristic at throttling valve on furnace top of blast furnace

A technology for throttle valves and blast furnaces, applied in blast furnace details, blast furnaces, furnaces, etc., can solve the disadvantages of choosing throttle valve plates, lack of analysis and understanding of throttle plate force conditions, and difficulty in obtaining real-time charge speed and other problems to achieve the effect of avoiding fabric segregation

Active Publication Date: 2013-03-20
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to obtain accurate real-time charge speed through industrial tests
In addition, from the perspective of material selection for the throttle valve plate, there is still a lack of analysis and understanding of the force of the throttle valve plate during the material distribution process, which is not conducive to the selection of appropriate and high-quality throttle valve plate materials to ensure the longevity of the material distribution equipment. Efficient use

Method used

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  • Method for acquiring material flow characteristic at throttling valve on furnace top of blast furnace
  • Method for acquiring material flow characteristic at throttling valve on furnace top of blast furnace
  • Method for acquiring material flow characteristic at throttling valve on furnace top of blast furnace

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Embodiment 1

[0105] Step A11: Obtain the basic physical parameters of the furnace material and the size of the material tank through measurement, and then calculate the force condition F of the particles through the calculation of the basic physical properties of the material.

[0106] Taking coke as an example, the basic physical properties of coke can be measured through physical experiments, as shown in Table 1, density (ρ), coefficient of rolling friction (μ r ), coefficient of sliding friction (μ), Poisson’s ratio (ν), modulus of elasticity (E) and tank size.

[0107] Table 1

[0108]

[0109] First set the center of the tank outlet as the origin of the three-dimensional coordinates (0,0,0), and now a coke particle at (1.69,1.73,2.87), the normal and tangential forces it receives f s,t They are:

[0110] F n , t = 286968 , f s，t =526400

[0111] Step A12: C...

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Abstract

The invention discloses a method for acquiring a material flow characteristic at a throttling valve on the furnace top of a blast furnace, which comprises the following steps: by basis physical property parameters of furnace charges, calculating material flow Q of the furnace charges when the furnace charges pass through the throttling valve; by a curve fitting method, acquiring a corresponding relation between the opening degree R of the throttling valve and the material flow Q; and by the corresponding relation between the opening degree R of the throttling valve and the material flow Q, obtaining the opening degree R of the throttling valve, wherein M represents a charge weight and t represents distribution time. The method for acquiring the material flow characteristic at the throttling valve on the furnace top of the blast furnace, which is provided by the invention, not only is beneficial for avoiding the condition that due to distribution segregation, the edge or the center is excessively heavy so as to influence the forward movement effect of the blast furnace, but also is beneficial for selecting a proper and high-quality throttling valve plate material and ensuring long service life and high efficiency use of distribution equipment.

Description

technical field [0001] The invention relates to the technical field of blast furnace ironmaking, in particular to a method for obtaining material flow characteristics at a blast furnace top throttle valve. Background technique [0002] The throttle valve on the top of the blast furnace is an important equipment for the distribution of furnace top materials. Its main function is to control the discharge speed of the furnace materials in the material tank to ensure that the furnace materials flow out at a reasonable speed and flow. Especially in the multi-ring bellless distributing process, it is an important equipment to ensure that a batch of furnace materials is distributed within the specified time or number of turns. If the throttling valve does not control the material flow ideally, it will lead to segregation of the cloth, causing the edge or center to be too heavy, thus affecting the direct effect of the blast furnace. Therefore, various factories and mines are compet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50C21B5/00
Inventor 范正赟马泽军
Owner SHOUGANG CORPORATION
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