Self-adaptive control fuel gas spray-blowing device and method based on charge level video recognition

Abstract

Provided is a self-adaptive control fuel gas spray-blowing device based on charge level video recognition. The self-adaptive control fuel gas spray-blowing device comprises a sintering pallet, a spray-blowing hood and a fuel gas spray-blowing device. The self-adaptive control fuel gas spray-blowing device is characterized in that the fuel gas spray-blowing device comprises a fuel gas spray-blowingheader pipe, a fuel gas spray-blowing branch pipe and a fuel gas spray-blowing pipe; the spray-blowing hood is located on the upper portion of the sintering pallet, the fuel gas spray-blowing headerpipe is arranged on the outer side of the spray-blowing hood, the fuel gas spray-blowing pipe is arranged above the sintering pallet and located in the spray-blowing hood, one end of the fuel gas spray-blowing branch pipe is connected with the fuel gas spray-blowing header pipe, the other end of the fuel gas spray-blowing branch pipe is connected with the fuel gas spray-blowing pipe, and fuel gasspray-blowing holes are formed in the fuel gas spray-blowing pipe; and the device further comprises a charge level video recognition device arranged on the upstream of the spray-blowing hood and located on the upper portion of the sintering pallet in the running direction of the sintering pallet. According to the self-adaptive control fuel gas spray-blowing device based on charge level video recognition, the opening degrees at which the fuel gas spray-blowing pipe corresponding to the unhealthy charge level as well as a corresponding electric valve need to be adjusted are judged according to the recognized color of the charge level, so that the problem that the charge level is whitened is solved accurately and quickly.

Description

technical field [0001] The invention relates to a gas injection device for a sintering machine and a gas injection method thereof, in particular to a gas injection self-adaptive control device and method based on video recognition of a material level, belonging to the field of sintering. Background technique [0002] The sintering process is a key link in the ironmaking process. Its principle is to mix various powdery iron-containing raw materials with an appropriate amount of fuel and flux, add an appropriate amount of water, mix and pelletize the material on the sintering equipment to make the material A series of physical and chemical changes, sintered into blocks, which are sent to the blast furnace for the next step. [0003] In order to reduce the coke ratio and smelting cost of blast furnace ironmaking, blast furnaces often require high strength and high reducibility for sinter. In the sintering process, the sintered ore is generally required to have high strength, h...

AI Technical Summary

Problems solved by technology

[0006] At present, in the production and application of the gas injection device, due to the influence of various factors such as moisture, pressing material, trolley furnace bar, etc., the material surface of the sintering machine entering the injection hood is prone to whitening in some areas of the material surface

The reason for this abnormal working condition is that due to the influence of many factors on the local area of ​​the material surface, the degree of ignition is too high, which not only ignites the solid carbon particles in the material layer, but also part of the iron in the iron ore powder has been melted and reduced, resulting in the The surface of the material in the area forms an over-melted layer, and the air permeability is seriously deteriorated

[0007] At present, for the working condition that the abnormal ignition causes the local air permeability of the material surface to deteriorate, the existing technology does not have any treatment means, and the operator can only observe the material surface on the spot, artificially judge and lower the main pipe valve of the gas injection device as a whole There are the following disadvantages in doing so:

If the range is too large, the overall gas injection volume will be reduced too much, which will have a serious negative impact on the gas injection-assisted sintering effect over time;

[0009] 2. The labor intensity of the operator is too high: Due to the lack of means and devices for automatic monitoring of the material level, the operator has to go to the material level monitoring platform to monitor the material level on a regular or irregular basis while handling other busy tasks

This not only increases the labor intensity of the operator, but also because the operator's monitoring is not continuous, many unhealthy (over-melted) material surfaces have not been detected, which has also brought serious negative effects on the stable production of the gas injection device. influences

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