CN109487022A - A kind of method for operating blast furnace - Google Patents
A kind of method for operating blast furnace Download PDFInfo
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- CN109487022A CN109487022A CN201811572641.9A CN201811572641A CN109487022A CN 109487022 A CN109487022 A CN 109487022A CN 201811572641 A CN201811572641 A CN 201811572641A CN 109487022 A CN109487022 A CN 109487022A
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- Prior art keywords
- coke
- blast furnace
- compactness
- good
- bulk
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/007—Conditions of the cokes or characterised by the cokes used
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Iron (AREA)
Abstract
The present invention relates to a kind of method for operating blast furnace, sample in blast furnace lower belt, and sample 11~15kg/ times on belt cross section；The coke of sampling uses 25mm × 25mm square hole screen, and coke is distinguished into >=25mm and < 25mm two parts；The coke of the good coke of compactness, the coke of compactness difference, < 25mm grade is subjected to weighing, then calculates the percentage for each accounting for sampling total weight；If adjusting blast furnace bulk coke coke load according to the good coke accounting of compactness.The method of the present invention can fast and accurately determine the ratio that can play skeleton function coke in blast furnace, by the detection of stokehold coke material object is entered, being targetedly adjusted daily to the dead permeability of stock column of blast furnace crucibe, to guarantee the stabilization of blast furnace system.
Description
Technical field
The present invention relates to a kind of blast furnace operatings that the adjustment dead permeability of stock column of cupola well is evaluated according to feeding density charcoal quality in kind
Method.
Background technique
Influence of the coke quality to blast furnace accounts for about 50% in the entire factor of production, the shadow of the fluctuation of coke quality to blast furnace
It is great to ring quality, currently used detection physical index, as M40, M10 and hot index, such as CIR, CSR can only unilateral cokes
Charcoal quality can not really reflect the ratio that skeleton function coke can be really played into blast furnace crucibe, that is to say, that can not
Judgement enter in blast furnace crucibe really play the coke of skeleton function on earth how many.
Summary of the invention
In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a kind of blast furnaces for adjusting the dead permeability of stock column of cupola well
Operating method is mainly evaluated by the coke quality in kind in the case where entering blast furnace, especially to small grade coke and cause
The differentiation of close property.Small grade coke and the coke of compactness difference are depleted before entering cupola well, do not have skeleton function,
After this part of coke increasing proportion, gas permeability is deteriorated, and cupola well communication capability is deteriorated, and needs to be added to oven coke ratio, Lai Zengjia
Coke skeleton function.
To achieve the above object, the invention is realized by the following technical scheme:
A kind of method for operating blast furnace, comprising the following steps:
1) coke samples:
It samples in blast furnace lower belt, and is sampled 11~15kg/ times on belt cross section；
2) coke grade is distinguished:
The coke of sampling uses 25mm × 25mm square hole screen, and coke is distinguished into >=25mm and < 25mm two parts；
3) coke compactness is distinguished:
The coke of hole diameter > 60um is the coke of compactness difference in >=25mm grade, remaining is the good coke of compactness
Charcoal；
4) coke of the good coke of compactness, the coke of compactness difference, < 25mm grade is subjected to weighing, then calculated each
From the percentage for occupying sample total weight；
5) blast furnace operating guarantees the skeleton function of coke, coke load=Raw Ore by adjusting bulk coke coke load
Single batch weight/raw coke single batch weight, concrete operations are as follows:
If the good coke of compactness is greater than 70%, blast furnace bulk coke coke load increases by 2% or more；
It does not include 65% if the good coke of compactness is 65%~70%, blast furnace bulk coke coke load remains unchanged；
It does not include 55% if the good coke of compactness is 55%~65%, blast furnace bulk coke coke load reduction by 2%~
5%；
It does not include 45% if the good coke of compactness is between 45%~55%, blast furnace bulk coke coke load reduces by 5%
~10%；
If hereinafter, explanation plays, skeleton function coke ratio is very low, and blast furnace bulk is burnt 45% for the good coke of compactness
Charcoal load need to reduce by 10% or more or take full coke for smelting.
Compared with prior art, the beneficial effects of the present invention are:
The method of the present invention can fast and accurately determine the ratio that can play skeleton function coke in blast furnace, by right daily
Enter the detection of stokehold coke material object, targetedly the dead permeability of stock column of blast furnace crucibe is adjusted, to guarantee the steady of blast furnace system
It is fixed.
Specific embodiment
The present invention is described in detail below, it should be noted that implementation of the invention embodiment party not limited to the following
Formula.
A kind of method for operating blast furnace, comprising the following steps:
1) coke samples:
It samples in blast furnace lower belt, and is sampled 11~15kg/ times on belt cross section；
2) coke grade is distinguished:
The coke of sampling uses 25mm × 25mm square hole screen, and coke is distinguished into >=25mm and < 25mm two parts；
3) coke compactness is distinguished:
Coke separates to the coke of the good coke of compactness, compactness difference in >=25mm grade, black burnt, foam is burnt and hole
The big coke of porosity is chosen, hole diameter > 60um, which is the coke of compactness difference；
4) coke of the good coke of compactness, the coke of compactness difference, < 25mm grade is subjected to weighing, then calculated each
From the percentage for occupying sample gross weight, calculation formula is as follows:
The good weight of coke of the good coke percentage=densification of compactness/sampling general name obtains weight × 100%；
The coke percentage of compactness difference=densification difference weight of coke/sampling general name obtains weight × 100%；
The coke percentage of < 25mm grade=< 25mm grade weight of coke/sampling general name obtains weight × 100%；
5) blast furnace operating guarantees the skeleton function of coke, coke load=Raw Ore by adjusting bulk coke coke load
Single batch weight/raw coke single batch weight, concrete operations are as follows:
If the good coke of silvery white, compactness is greater than 70%, blast furnace bulk coke coke load increases by 2% or more；
It does not include 65% if the good coke of silvery white, compactness is 65%~70%, blast furnace bulk coke coke load is kept
It is constant；
It does not include 55% if the good coke of silvery white, compactness is 55%~65%, blast furnace bulk coke coke load reduces
2%~5%；
It does not include 45% if the good coke of silvery white, compactness is between 45%~55%, blast furnace bulk coke coke load
Reduce by 5%~10%；
If hereinafter, explanation plays, skeleton function coke ratio is very low, and blast furnace is big 45% for the good coke of silvery white, compactness
Block coke coke load need to reduce by 10% or more or take full coke for smelting.
Daily STRENGTH ON COKE quality in kind is detected, and is counted, analyzed to data, targetedly dead to blast furnace crucibe
Permeability of stock column is adjusted, to guarantee the stabilization of blast furnace system.
Claims (1)
1. a kind of method for operating blast furnace, which comprises the following steps:
1) coke samples:
It samples in blast furnace lower belt, and is sampled 11~15kg/ times on belt cross section；
2) coke grade is distinguished:
The coke of sampling uses 25mm × 25mm square hole screen, and coke is distinguished into >=25mm and < 25mm two parts；
3) coke compactness is distinguished:
The coke of hole diameter > 60um is the coke of compactness difference in >=25mm grade, remaining is the good coke of compactness；
4) coke of the good coke of compactness, the coke of compactness difference, < 25mm grade is subjected to weighing, then calculates and each accounts for
Sample the percentage of total weight；
5) blast furnace operating guarantees the skeleton function of coke by adjusting bulk coke coke load, coke load=Raw Ore single batch
Secondary weight/raw coke single batch weight, concrete operations are as follows:
If the good coke of compactness is greater than 70%, blast furnace bulk coke coke load increases by 2% or more；
It does not include 65% if the good coke of compactness is 65%~70%, blast furnace bulk coke coke load remains unchanged；
It does not include 55% if the good coke of compactness is 55%~65%, blast furnace bulk coke coke load reduces by 2%~5%；
It does not include 45% if the good coke of compactness is between 45%~55%, blast furnace bulk coke coke load reduction by 5%~
10%；
If hereinafter, explanation plays, skeleton function coke ratio is very low, and blast furnace bulk coke coke is negative 45% for the good coke of compactness
Lotus need to reduce by 10% or more or take full coke for smelting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811572641.9A CN109487022A (en) | 2018-12-21 | 2018-12-21 | A kind of method for operating blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811572641.9A CN109487022A (en) | 2018-12-21 | 2018-12-21 | A kind of method for operating blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109487022A true CN109487022A (en) | 2019-03-19 |
Family
ID=65711363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811572641.9A Pending CN109487022A (en) | 2018-12-21 | 2018-12-21 | A kind of method for operating blast furnace |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112481432A (en) * | 2020-11-15 | 2021-03-12 | 山西太钢不锈钢股份有限公司 | Method for discharging lump coke in blast furnace |
| CN113136465A (en) * | 2021-04-14 | 2021-07-20 | 鞍钢股份有限公司 | Material distribution method for preventing middle coke from being distributed into center of blast furnace |
| TWI783285B (en) * | 2019-10-31 | 2022-11-11 | 日商杰富意鋼鐵股份有限公司 | Blast furnace operation method |
Citations (5)
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|---|---|---|---|---|
| CN102159670A (en) * | 2008-09-16 | 2011-08-17 | 新日本制铁株式会社 | Coke and method for producing same |
| CN104975119A (en) * | 2015-06-24 | 2015-10-14 | 山西太钢不锈钢股份有限公司 | Coke distributing method of blast furnace |
| CN106248518A (en) * | 2016-08-10 | 2016-12-21 | 武汉钢铁股份有限公司 | Coke is the evaluation methodology of degradation in blast furnace |
| CN107557043A (en) * | 2017-10-30 | 2018-01-09 | 武汉钢铁有限公司 | The application method of high-order weakly caking coal |
| CN109022649A (en) * | 2018-08-24 | 2018-12-18 | 武汉钢铁有限公司 | A kind of Burden distribution method of blast furnace and device |
-
2018
- 2018-12-21 CN CN201811572641.9A patent/CN109487022A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102159670A (en) * | 2008-09-16 | 2011-08-17 | 新日本制铁株式会社 | Coke and method for producing same |
| CN104975119A (en) * | 2015-06-24 | 2015-10-14 | 山西太钢不锈钢股份有限公司 | Coke distributing method of blast furnace |
| CN106248518A (en) * | 2016-08-10 | 2016-12-21 | 武汉钢铁股份有限公司 | Coke is the evaluation methodology of degradation in blast furnace |
| CN107557043A (en) * | 2017-10-30 | 2018-01-09 | 武汉钢铁有限公司 | The application method of high-order weakly caking coal |
| CN109022649A (en) * | 2018-08-24 | 2018-12-18 | 武汉钢铁有限公司 | A kind of Burden distribution method of blast furnace and device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI783285B (en) * | 2019-10-31 | 2022-11-11 | 日商杰富意鋼鐵股份有限公司 | Blast furnace operation method |
| CN112481432A (en) * | 2020-11-15 | 2021-03-12 | 山西太钢不锈钢股份有限公司 | Method for discharging lump coke in blast furnace |
| CN112481432B (en) * | 2020-11-15 | 2022-04-08 | 山西太钢不锈钢股份有限公司 | Method for discharging lump coke in blast furnace |
| CN113136465A (en) * | 2021-04-14 | 2021-07-20 | 鞍钢股份有限公司 | Material distribution method for preventing middle coke from being distributed into center of blast furnace |
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Application publication date: 20190319 |
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