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Anti-supply-halt coal powder recovery storage system applied to metallurgy

A technology for pulverized coal and storage, which is applied in the field of coal powder recovery and reserve system for preventing material failure, can solve the problems of poor grinding quality, blast furnace shutdown, and insufficient qualified pulverized coal, so as to reduce the risk of material failure and reduce pressure. Effect

Inactive Publication Date: 2019-04-16
云南玉溪仙福钢铁(集团)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is aimed at the existing pulverized coal grinding conveying lines used for conveying to blast furnace coal injection bunkers. Most of them are conveyed in parallel by multiple conveying lines. With the passage of time, the grinding quality of each grinding conveying line is different, and the grinding quality is good. The main grinding conveyor line that is not easy to block the coal injection nozzle has poor grinding quality, and the auxiliary grinding conveyor line that has the risk of clogging the coal injection nozzle is used to complete the coal powder transportation. In practical applications, the main grinding conveyor line needs regular maintenance, and there is not enough Qualified pulverized coal has the problem of the risk of blast furnace material cut-off and production shutdown. Provide a material-cut prevention pulverized coal recovery and storage system for metallurgy

Method used

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  • Anti-supply-halt coal powder recovery storage system applied to metallurgy

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 1 shown, as figure 1 As shown, an anti-cutting coal powder recovery storage system applied to metallurgy includes a coal injection bin 1, a main grinding conveying line and an auxiliary grinding conveying line, both of which include a grinder, a powder collecting Bin and bin-type pump, the grinder grinds coal into coal powder, which is transported to the powder collection bin for temporary storage through the pipeline, and the powder collection bin transports the temporarily stored coal powder to the bin-type pump through the pipeline, driven by the bin-type pump It is transported to the coal injection bin 1 through pipelines, wherein the bin pump of the main grinding conveying line is connected with the powder collecting bin of the auxiliary grinding conveying line through seamless pipes.

[0025] In use, the bin pump of the main grinding conveying line is connected with the powder collecting bin of the auxiliary grinding conveying line through a seamle...

Embodiment 2

[0027] Based on Embodiment 1, the main grinding conveying line includes the first grinder 3, the first powder collecting bin 6 and the first chamber pump 9, and the auxiliary grinding conveying line includes the second grinding machine 2, the second powder collecting bin 5 and the second The chamber pump 8, the first chamber pump 9 communicates with the second powder collecting chamber 5 through the first seamless pipe 18, the first seamless pipe 18 is connected with the first compressed air pipe 19, and the first seamless pipe 18 The first air supply device 14 is arranged at the connection with the first compressed air pipe 19, and the first air supply device 14 guides the coal powder in the first storehouse pump 9 into the second collection unit through the compressed air introduced by the first compressed air pipe 19. Inside the powder bin 5.

[0028] In use, a part of the pulverized coal produced by the first grinder is sent to the first powder collection bin for temporary...

Embodiment 3

[0030] Based on the second embodiment, the first seamless pipe 18 is also provided with a first pneumatic valve 12 , and the first compressed air pipe 19 is provided with a first positioning ball valve 13 .

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Abstract

The invention relates to the technical field of metallurgy emergency treatment, and particularly relates to an anti-supply-halt coal powder recovery storage system applied to metallurgy. The system comprises a coal spraying cabin, a main grinding conveying line and an auxiliary grinding conveying line, wherein the main grinding conveying line and the auxiliary grinding conveying line both comprisegrinding machines, powder collecting cabins and cabin type pumps, the grinding machines are used for grinding coal into coal powder, the coal powder is conveyed to the powder collecting cabins through pipelines for temporary storage, the powder collecting cabins are used for conveying the temporarily stored coal powder to the cabin type pumps through pipelines, the coal powder is conveyed to thecoal spraying cabin through a pipeline under the driving of the cabin type pumps, wherein the cabin type pumps of the main grinding conveying line communicates with the powder collecting cabins of theauxiliary grinding conveying line through seamless tubes. According to the system, the problem that due to the fact that an existing main grinding conveying line needs to be maintained at regular intervals, if no enough qualified coal powder exists, the risk that material supply of a blast furnace halts and the blast furnace is shut down is caused is solved.

Description

technical field [0001] The invention relates to the technical field of metallurgical emergency treatment, in particular to an anti-cutting pulverized coal recovery and storage system applied to metallurgy. Background technique [0002] In iron and steel production, it is necessary to use blast furnace combustion to provide sufficient heat energy for the entire production. In order to ensure the smooth operation of the blast furnace and effectively utilize the performance of each equipment, the production cost of the entire link is reduced by using pulverized coal instead of full coke for combustion. [0003] The existing pulverized coal grinding conveying lines used to convey to the blast furnace coal injection bunker are mostly conveyed in parallel by multiple conveying lines. With the passage of time, there are differences in the grinding quality of each grinding conveying line. The grinding quality is good and it is not easy to block the nozzle. The coal nozzle is the mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B5/00
CPCC21B5/003
Inventor 李凤宝普万华杨冬学
Owner 云南玉溪仙福钢铁(集团)有限公司
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