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A Classification Control Method of Blast Furnace Tuyere Coke Particle Size

A control method and particle size classification technology, applied in the field of coal chemical industry, to achieve the effect of avoiding blindness

Active Publication Date: 2018-11-23
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for controlling the granularity of blast furnace tuyere coke by classification, which mainly solves the technical problem of lack of precise control of blast furnace tuyere coke particle size in the prior art when controlling the quality of blast furnace tuyere coke

Method used

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Embodiment Construction

[0021] The blast furnace tuyere coke is taken at the blast furnace tuyere with a blast furnace tuyere sampler, and the blast furnace tuyere coke is cooled to carry out particle size classification of the blast furnace tuyere coke.

[0022] A method for controlling the particle size classification of blast furnace tuyere coke, comprising the following steps:

[0023] Step 1, using a magnet to remove iron particles in the blast furnace tuyere coke;

[0024] Step 2. Use sieves with porosities of 50mm, 25mm, 10mm, and 5mm to carry out particle size screening and grading on the blast furnace tuyere coke, and divide the blast furnace tuyere coke into 50mm or more, 25mm-50mm, 10-25mm, 5-10mm, There are five particle size grades from 0 to 5 mm, and the percentage of blast furnace tuyere coke with a particle size above 50 mm in the total mass of coke obtained by mechanical screening a 1 , the particle size is 25mm ~ 50mm, the mass percentage is a 2 , particle size 10 ~ 25mm mass perc...

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Abstract

The invention discloses a size grading control method for coke at a blast-furnace tuyere and mainly solves technical a problem in precise control of size of coke at the blast-furnace tuyere during quality control of coke at the blast-furnace tuyere in the prior art. The technical scheme provided by the invention includes steps of removing iron particles in coke at the blast-furnace tuyere by using magnets; grading the coke at the blast-furnace tuyere with a mechanical sieve and measuring the percentage of the coke of different size grades in the total mass of the coke; crushing coke of different grades at the blast-furnace tuyere and detecting the mass ratio of iron slag in the coke of different grades at the blast-furnace tuyere through coke microscopic structure detection after sampling; and calculating the proportions of the coke of different grades at the blast-furnace tuyere in the total mass of the coke. According to the invention, correct evaluation of the degradation condition of the coke in the blast-furnace is realized and a guarantee is provided for smooth production operation control of the blast-furnace.

Description

technical field [0001] The invention relates to a coke particle size classification control method, in particular to a blast furnace tuyere coke particle size classification control method, which belongs to the technical field of coal chemical industry. Background technique [0002] Coke is one of the main raw materials for blast furnace ironmaking. It mainly plays the role of supporting, reducing and providing heat source in the blast furnace. The functions of reducing and providing heat source can be replaced by coal injection, but its supporting role is irreplaceable. An important aspect of blast furnace assessment coke quality. Therefore, many blast furnace workers pay more attention to the properties of the coke in the tuyere of the blast furnace, that is, the coke in the gyration zone. Generally, the coke particle size test, drum test and reactivity test are used to estimate the bosh coke to reflect the deterioration of the coke in the blast furnace. [0003] The part...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/04
Inventor 张文成韩宏松张玉才
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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