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Method and device for preventing heavy material in blast furnace top tank

A technology for a blast furnace and a charging tank is applied in the field of preventing the heavy charging of the charging tank on the top of the blast furnace, and can solve problems such as heavy charging accidents, and achieve the effects of reducing the probability of occurrence, ensuring normal operation, and avoiding the blast furnace air break.

Active Publication Date: 2019-07-02
SHOUGANG JINGTANG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the technical problem in the prior art that the blast furnace top tank is likely to cause heavy material accidents by providing a method and device for preventing the blast furnace top tank from being heavy, and can greatly reduce the occurrence of blast furnace top heavy material accidents probability, avoid blast furnace shutdown, and ensure normal production

Method used

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  • Method and device for preventing heavy material in blast furnace top tank
  • Method and device for preventing heavy material in blast furnace top tank
  • Method and device for preventing heavy material in blast furnace top tank

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Experimental program
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Embodiment 1

[0058] The embodiment of the present invention provides a method for preventing heavy material in the top tank of a blast furnace. The blast furnace includes: a feeder, a vibrating screen, a combined silo, and a top tank. The combined silo is controlled by the silo CPU. The tank is controlled by the furnace top CPU; the feeder feeds the combined silo through the vibrating screen, and the combined silo feeds the furnace top tank.

[0059] See figure 1 , The method for preventing heavy material in the blast furnace top tank provided by the embodiment of the present invention includes:

[0060] Step S10, judging whether the communication between the silo CPU and the furnace top CPU is abnormal, and issuing a heavy material alarm when the communication is abnormal, specifically including: Step S101, setting a first response time, such as setting the first response time to 20S. Step S102: When the silo CPU sends the loading signal to the furnace top CPU, control the silo CPU to send the...

Embodiment 2

[0067] See figure 2 , The embodiment of the present invention provides a device for preventing heavy material in the top tank of a blast furnace, including: a first processing unit, a second processing unit, a third processing unit, and a fourth processing unit.

[0068] The first processing unit is used to determine whether the communication between the silo CPU and the furnace top CPU is abnormal, and to give a heavy material alarm when the communication is abnormal. Specifically, in the first processing unit: the first response time is set by the first setting module. When the silo CPU sends the three inspection signals to the furnace top CPU, the first control module controls the silo CPU to send the first signal to the furnace top CPU and triggers the first timer to start timing; the furnace top CPU feeds back the first signal to the furnace top CPU. Store the CPU and trigger the end of the first timer. The timing time of the first timer is obtained by the first obtaining ...

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Abstract

The invention relates to a blast furnace device, in particular to a method for preventing heavy burder of a material tank on the top of a blast furnace. The method includes the steps that whether communication between a material bin CPU and a furnace top CPU is abnormal or not is judged, and heavy burder alarming is performed when communication is abnormal; whether material slip happens to a combined material bin and material tank or not is judged, and heavy burder alarming is performed when material slip happens to the combined material bin and material tank; during loading of the material tank on the top of the blast furnace, the weight change of the material tank on the top of the blast furnace is judged; when the weight of the material tank on the top of the blast furnace fluctuates for a long time within a set range, heavy burder alarming is performed; and whether a material empty signal of the furnace top CPU is abnormal or not is judged, and heavy burder alarming is performed when abnormity exists. The method for preventing heavy burder of the material tank on the top of the blast furnace solves the technical problem that in the prior art, a heavy burder accident happens tothe material tank on the top of the blast furnace easily, the occurrence possibility of the heavy burder accident of the top of the blast furnace can be substantially reduced, it is avoided that the blast furnace is damped down, and it is guaranteed that production is normally performed.

Description

Technical field [0001] The invention relates to blast furnace equipment, in particular to a method and a device for preventing heavy materials in a blast furnace top tank. Background technique [0002] For large-scale blast furnaces, the top tank volume is usually small. When the charge in the furnace top tank is greater than the volume of the tank, the upper sealing valve cannot be closed tightly, and the air is forced to stop before the charge can be put into the blast furnace. This phenomenon is heavy. At present, the phenomenon of heavy materials on the top of the furnace may occur in the following situations: First, because the CPU of the furnace top and the silo are separated, when there is a communication problem or the CPU is redundantly switched, if the furnace top cannot receive the message from the silo CPU The three-check signal is the main reason that the heavy material on the top of the furnace is forced to stop the wind. Second, there are many tanks in the combin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B7/20C21B7/24C21B5/00
Inventor 陈国强张贺顺郭艳永董志宝王牧麒王有良刘志强
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD