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Device and method for treating injection coal by utilizing microwaves

A technology of microwave treatment and coal injection, which is applied in the field of blast furnace metallurgy industry, can solve the problems of high cost, unfavorable stable production of blast furnace smelting, etc., and achieves the effects of clear layers, ensuring high-quality treatment, and improving grindability

Pending Publication Date: 2022-07-08
SHANXI LUAN ENVIRONMENTAL ENERGY DEV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at problems such as the high cost of the existing method for increasing the combustion rate of injection coal and the adverse effects on the stable production of blast furnace smelting, and provides a device and method for processing injection coal using microwaves

Method used

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  • Device and method for treating injection coal by utilizing microwaves
  • Device and method for treating injection coal by utilizing microwaves
  • Device and method for treating injection coal by utilizing microwaves

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Through the control of the large and small impellers of the feeding device, the pulverized coal is 1.5m 3 The flow rate of / s is added to the device, the power of the microwave generator is adjusted to 500W, and the pulverized coal is modified by the emitted microwave. The processing time is 40s, and the electromagnetic processing module is entered. It does not generate a magnetic field, and only plays a role in conveying. The conveyor belt is driven by the drive motor to make the pulverized coal flow out of the discharge port. In this example, the modification treatment of pulverized coal for 40s under the microwave power of 500W can increase its combustion rate by 5%.

Embodiment 2

[0045] Through the control of the large and small impellers of the feeding device, the pulverized coal is 1.5m 3 The flow rate of / s is added into the device, the power of the microwave generator is adjusted to 500W, and the pulverized coal is modified by the emitted microwave. The processing time is 40s, and it enters the electromagnetic processing module. The electromagnetic rod of the electromagnetic processor is energized to control the power. In the case of 2KW, a magnetic field with a magnetic field strength of 0.25T is generated to magnetize the pulverized coal, and the treatment time is 30s, and the treated pulverized coal flows out from the discharge port. In this embodiment, the pulverized coal is modified under the microwave power of 500W for 40s, and then the pulverized coal is magnetized in a magnetic field of 0.25T for 30s, which can increase the combustion rate by 8%.

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Abstract

The invention relates to a device and method for treating injection coal through microwaves, belongs to the technical field of blast furnace metallurgical industry, and can solve the problems that an existing method for increasing the combustion rate of the injection coal is high in cost and brings adverse effects to stable production of blast furnace smelting, and the like, and the device comprises a feeding module, a microwave radiation module and an electromagnetic treatment module. According to the method, the injection coal powder entering the device is continuously and quantitatively controlled by the feeding module to be subjected to microwave radiation modification in the microwave radiation module, and then enters the electromagnetic treatment module to be subjected to electromagnetic modification, so that on one hand, the combustion efficiency of the injection coal in a blast furnace tuyere convolute area can be effectively improved, and the coke consumption can be effectively reduced; coking coal resources are saved, the pig iron cost is reduced, and on the other hand, the environmental pollution problem caused by coking can be reduced.

Description

technical field [0001] The invention belongs to the technical field of blast furnace metallurgy industry, and in particular relates to a device and method for processing coal injection by microwave. Background technique [0002] At present, China is a major steel producer in the world, and blast furnace ironmaking still occupies a major position in modern steel production. Before, coke has always been an important fuel, carburizing agent and reducing agent in blast furnace smelting production, but with the development of technology and the utilization of clean energy, pulverized coal injection technology has been more and more widely used in blast furnace smelting technology . The use of blast furnace coal injection can effectively reduce coke consumption, save coking coal resources, reduce pig iron costs, and reduce environmental pollution caused by coking. In addition, coal injection technology can adjust the furnace temperature, which is conducive to the adjustment of b...

Claims

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Application Information

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IPC IPC(8): B01J4/02B01J19/12B01J4/00B01J19/08C10L9/00
CPCB01J4/02B01J19/126B01J4/001B01J19/087C10L9/00C10L2290/36C10L2290/38C10L2230/22Y02P10/20
Inventor 郭晋辉郑鑫张玮黄潜苗利利朱丽敏史亚鹏茹晓云付一春侯伟梁周杰张国杰
Owner SHANXI LUAN ENVIRONMENTAL ENERGY DEV