Sintering control method and system

A technology of sintering control and sintering end point, which is applied in the field of sintering, can solve the problems of energy waste of the main exhaust fan, etc., and achieve the effects of avoiding mass production, stabilizing the speed of the trolley, and reducing waste

Active Publication Date: 2015-01-21
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

AI Technical Summary

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
  • 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

[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

A sintering control method and system. The method comprises: detecting a current position of a burn-through point of a sintering trolley operating at a preset speed; determining a relationship between the current position of the burn-through point and a first preset position N and a relationship between the current position of the burn-through point and a second preset position M, [N, M] being an ideal position range of the burn-through point of the sintering trolley; when the current position of the burn-through point is less than N, reducing air quantity of a large flue or reducing a negative pressure of the large flue ; and when the current position of the burn-through point is greater than M, increasing air quantity of the large flue or increasing the negative pressure of the large flue. In the method, the generation of ineffective negative pressure and ineffective air quantity in the sintering process is reduced, and electric power consumed by a main exhaust fan is saved, thereby avoiding adverse effects of the speed regulation of the trolley on the stability of the material flow quality and the control of the follow-up working procedure.

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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Patent Type & Authority Patents(China)
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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