Method and device for regulating chute material flow opening during material distribution of blast furnace

A technology of material flow opening and adjustment method, which is applied in the direction of bell and funnel arrangement, etc., can solve the problems of low control accuracy, automatic adjustment of chute material flow opening, and unstable control effect, so as to improve control accuracy and stability The effect of the control effect

Inactive Publication Date: 2013-12-11
LAIWU IRON & STEEL GRP
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Problems solved by technology

[0005] In view of this, in order to solve the defect that the opening of the chute material flow cannot be automatically adjusted in the existing blast furnace material distribution, so that the control accuracy is not high and the control effect is unstable, the technical solution is as follows:

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  • Method and device for regulating chute material flow opening during material distribution of blast furnace
  • Method and device for regulating chute material flow opening during material distribution of blast furnace

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Embodiment Construction

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0039] see figure 1 , the embodiment of the present invention provides a method for adjusting the opening of the chute in the blast furnace material distribution, including:

[0040] Step 110: Obtain the charge weight, and obtain the set flow rate of the chute according to the charge weight.

[0041] The charge is placed in a weighing tank with a furnace top pressure compensation weighing system to obtain the weight of the charge in the weighing tank; when th...

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Abstract

The embodiment of the invention provides a method and a device for regulating chute material flow opening during the material distribution of a blast furnace. The method comprises the following steps of acquiring the weight of furnace charges to obtain the set chute material flow speed according to the weight of the furnace charges; searching a chute material flow opening value which corresponds to the set chute material flow speed in a preset material flow comparison table according to the set chute material flow speed, and setting the chute material flow opening value to be the material flow opening value of a chute material flow valve of the blast furnace; after a material distribution process is finished, calculating actual chute material flow speed; acquiring the deviation of the actual chute material flow speed and the set chute material flow speed according to the actual chute material flow speed and the set chute material flow speed, judging whether the deviation is within a preset error range or not, and if so, regulating and updating the chute material flow opening value in the material flow comparison table. The method and the device for regulating the chute material flow opening during the material distribution of the blast furnace, which are provided by the embodiment of the invention, can enhance the control accuracy of chute material flows and achieve the stable control effect.

Description

technical field [0001] The invention relates to the field of automatic control, and more specifically relates to a method and a device for adjusting the material flow opening of a chute in a blast furnace material distribution. Background technique [0002] In blast furnace production, sinter, coke, raw ore, limestone and other furnace materials are distributed to the inside of the blast furnace through the chute. The uniformity of the chute is closely related to the opening of the material flow valve of the chute. [0003] The opening of the material flow valve can be measured by professional instruments during the opening of the furnace. However, due to factors such as changes in the humidity of the furnace material and the buoyancy of the furnace pressure, the flow rate of the chute will be affected. Under the high temperature, it cannot be evenly distributed inside the blast furnace under the specified total number of turns, resulting in uneven material surface inside t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B7/20
Inventor 柳希泉刘建华苏毅段崇庆闫新宏王庆光郭元亮
Owner LAIWU IRON & STEEL GRP
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