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Sintering control method and system

A technology of sintering control and sintering end point, applied in the field of sintering, can solve problems such as energy waste of the main exhaust fan, and achieve the effect of avoiding mass production, saving money, and avoiding adverse effects

Active Publication Date: 2013-04-03
中治长天国际工程有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of this, the purpose of the embodiment of the present invention is to provide a sintering control method and system to solve the problem of avoiding energy waste of the main exhaust fan while controlling the sintering end point

Method used

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  • Sintering control method and system
  • Sintering control method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] figure 2 It is a flow chart of Embodiment 1 of the sintering control method of the present application, and the method includes:

[0043] S201. Detect the current sintering end position of the sintering trolley running at a preset speed.

[0044] In some embodiments of the present invention, the running speed of the sintering trolley can be determined according to the sintering output. After the required sintering output is determined, the running speed of the sintering trolley and the height of the material layer can be further determined according to the width of the trolley. In the present invention, under normal circumstances (except when the output needs to be changed), the speed of the trolley is kept stable.

[0045] S202. Determine the relationship between the current sintering end position and the first preset position N, the current sintering end position and the second preset position M, wherein the first preset position N is smaller than the second preset ...

Embodiment 2

[0067] This embodiment is based on the first embodiment, and is a refinement made on the basis of the first embodiment, especially the further refinement of the steps of reducing the air volume of the large flue or reducing the negative pressure of the large flue when the current sintering end position is less than N.

[0068] In the method of this embodiment, when the current sintering end position is less than N, [0, N) is divided into n sub-intervals in advance, where 0 is the sintering starting point, and the mth sub-interval is [N m-1 , N m ), 1≤m≤n, and m, n are integers, N 0 =0,N n =N,01 2 ...n-1 <N; set the adjustment amount corresponding to each sub-interval in the n sub-intervals. The frequency conversion motor of the machine; the adjustment amount corresponding to the mth sub-interval is greater than or equal to the adjustment amount corresponding to the m+1th sub-interval;

[0069] The step of reducing the air volume of the large flue or reducing the negative pr...

Embodiment 3

[0075] This embodiment is based on Embodiment 1 and corresponds to Embodiment 2. It is a refinement made on the basis of Embodiment 1, especially for increasing the air volume of the large flue or increasing the load of the large flue when the current sintering end position is greater than M. Further refinement of the pressing steps.

[0076] In this embodiment, when the current sintering end position is greater than M, (M, W] is divided into p subintervals in advance, where W represents the end position of the sintering trolley, and the qth subinterval is (M q-1 ,M q ], 1≤q≤p, and q is an integer, M 0 = M, M p =W,M1 2 ...p-1

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Abstract

The invention discloses a sintering control method and system. The method comprises the following steps: detecting the current sintering end point position of a sintering trolley operating at a preset speed; determining a relation between the current sintering end point position and a first preset position N and a relation between the current sintering end point position and a second preset position M, wherein [N, M] is an ideal sintering end point position range of the sintering trolley; when the current sintering end point position is larger than N, reducing a large flue air volume or reducing a large flue negative pressure; and when the current sintering end point position is larger than M, increasing the large flue air volume or increasing the large flue negative pressure. According to the invention, by adjusting the large flue air volume or the large flue negative pressure, the generation of ineffective negative pressure and ineffective air volume in the sintering process is reduced, the air volume waste is reduced, and electric power consumed by a main exhaust fan is greatly saved. In addition, the speed of the trolley is kept in a stable state and material flow cannot rise and fall, so that the follow-up procedure is more conveniently controlled; therefore, adverse effects on the control of the follow-up procedure are avoided.

Description

technical field [0001] The present application relates to sintering technology, in particular to a sintering control method and system. 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 have become important indicators of steel production. In iron and steel production, iron-containing raw material ores need to be sintered before entering the blast furnace for smelting. The specific sintering process is: first mix various powdery iron-containing raw materials into an appropriate amount of fuel and flux, and add an appropriate amount of water to form a mixed material after mixing and pelletizing, and then place the mixed material in the sintering system Roasting on the trolley at high temperature causes a series of physical and chemical changes in the mixed material, and finally forms a granular mate...

Claims

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Application Information

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IPC IPC(8): F27B21/14
Inventor 袁立新孙超卢杨权申伟杰高鹏双
Owner 中治长天国际工程有限责任公司
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