CN109709298A - A kind of coke inspection by sampling and load in mixture matching method - Google Patents
A kind of coke inspection by sampling and load in mixture matching method Download PDFInfo
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- CN109709298A CN109709298A CN201811636980.9A CN201811636980A CN109709298A CN 109709298 A CN109709298 A CN 109709298A CN 201811636980 A CN201811636980 A CN 201811636980A CN 109709298 A CN109709298 A CN 109709298A
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Abstract
The invention discloses a kind of coke inspection by sampling and load in mixture matching method, belong to the field of smelting of iron or steel, coke inspection by sampling and matching method is loaded in mixture the following steps are included: a, sampling: taking coke to be tested to be greater than 50 kilograms from a batch coke, coke to be tested includes burner coke；The grade of coke to be tested is 25mm-80mm；Coke to be tested is crushed to by 20-25mm grade using jaw crusher, 200 grams is therefrom chosen and is used as sample, sample includes 36-38 coke granule；B, it tests: measuring the hot strength of coke of the batch coke；C, load in mixture: the batch coke below of hot strength of coke 63% does not enter furnace, 20% or less the quality accounting of the batch coke of hot strength of coke 63%-65%, 20% or more the quality accounting of the batch coke of 68% or more hot strength of coke, the quality accounting 60% or so of the batch coke of hot strength of coke 65%-68%.It a kind of coke inspection by sampling disclosed by the invention and loads in mixture matching method and simplifies operation, stability is high, maintains large blast furnace stable smooth operation based on hot strength of coke index.
Description
Technical field
The invention belongs to the field of smelting more particularly to a kind of coke inspection by sampling of iron or steel and load in mixture matching method.
Background technique
The development of blast furnace large size is the trend and direction of blast furnace ironmaking industry, skeletal support effect pair of the coke in blast furnace
It is most important in large blast furnace.Coke enters furnace from blast furnace throat, is different deteriorations, granularity to shaft, furnace bosh, bosh and cupola well
The process constantly to become smaller.Coke is in restoration of lower stack, cohesive zone and drippage region, and coke is to guarantee the region gas permeability and thoroughly
The key of fluidity, therefore, in order to guarantee the gas permeability and stable smooth operation of the blast furnace in smelting process, it is desirable to which coke has enough
Calorific intensity.Especially in large blast furnace, the degree of coke degradation is fiercer, and granularity is smaller, and the calorific intensity of coke is large-scale high
The important foundation of furnace stable smooth operation.
There are six the index of evaluation coke quality is main: two hot strength performance indicators (coke reactivity CRI and cokes
Charcoal post reaction strength CSR), two cold strength performance indicators (wear-resistant strength M10 and crushing strength M40) and two ingredients
Index (ash content Ad and sulphur content Sd).CRI in hot strength of coke performance refers to the chemical stability of coke, and CSR refers to coke
High-temperature stability of the charcoal in furnace, i.e. hot strength of coke.When the decline of the calorific intensity performance of coke, blast furnace permeability is deteriorated, pressure
Difference increases, serious to will lead to avalanche material, directly affects furnace processor, quality and fuel portion.Therefore it reduces CRI, improve CSR
The high-temperature behavior for improving coke has become the common recognition of blast furnace ironmaking worker.
The testing standard that China takes at present is " coke reactivity and the post reaction strength test side GB/T4000-2017
Method ", which is the variation behavior for simulating coke in blast furnace.But this method reacts item in actually blast furnace
Part differs greatly, and the sampling in especially different iron company laboratories and method for making sample have differences larger, and the result of measurement is poor
It is different obvious.Main reason is that: (1) ratio of different sources coke containing burner coke different, and burner coke participates in experiment detection
Ratio is larger to the deviation of experimental result；(2) granularity of coke is respectively different, is greater than 80mm grade coke and participates in detection, to inspection
Result is surveyed to be affected；(3) weight demands for entering furnace detection coke in experimental standard are 200g, but are not specified by coke granule
Quantity limitation, have 30 of 200g coke granule quantity, the evaluation of 40 had, different number STRENGTH ON COKE calorific intensity are that have shadow
Loud.
For the iron and steel enterprise of outsourcing coke, the coke quality source differences of buying are larger, and ordinary circumstance is to be used in mixed way
The coke of separate sources can have conditions of blast furnace stable smooth operation larger if a certain coke quality declines and furnace entering volume is larger
It influences, therefore, how to maintain the stability of feeding density charcoal quality most important to smooth operation of furnace.
Summary of the invention
In view of the problems of the existing technology, the present invention provides one kind convenient for operation, and stability is high, improves under blast furnace
The gas permeability of portion's coke reduces blast furnace pressure difference, and the coke sampling of large blast furnace stable smooth operation is maintained based on hot strength of coke index
Examine and load in mixture matching method.
The invention is realized in this way a kind of coke inspection by sampling and load in mixture matching method, the coke inspection by sampling and
Load in mixture matching method the following steps are included:
A, it samples: taking coke to be tested to be greater than 50 kilograms from a batch coke, the coke to be tested includes burner
It is burnt；The grade of the coke to be tested is 25mm-80mm, and wherein the quality accounting of the coke to be tested of 40mm-80mm grade is not
Lower than 50%；
The coke to be tested is crushed to by 20-25mm grade using jaw crusher, therefrom chooses 200 grams as examination
Sample includes 36-38 coke granule in 200 grams of samples；
B, it tests: coke reactivity being carried out to the sample and post reaction strength is tested, measures the coke of the batch coke
Charcoal calorific intensity；
C, load in mixture: the batch coke below of hot strength of coke 63% does not enter furnace, the batch of hot strength of coke 63%-65%
The quality accounting 20% of coke hereinafter, the batch coke of 68% or more hot strength of coke 20% or more quality accounting, coke heat
The quality accounting 60% or so of the batch coke of intensity 65%-68%.
In the technical solution, burner coke is not rejected in the coke to be tested in step a, sampling quantity is greater than 50 kilograms, passes through
Unitary sampling amount is increased, mitigates influence of the burner coke to test, simplifies operating procedure, operated convenient for actual production, further,
Sampled point is more than at 15 points, by improving sampled point quantity, can further mitigate influence of the burner coke to test；Coke to be tested
Charcoal grade is not more than 80mm, keeps burner coke ratio example in coke to be tested lower, the matter of the coke to be tested of 40mm-80mm grade
It measures accounting and is not less than 50%, make coke to be tested hot strength of coke with higher；It include 36-38 coke in 200 grams of samples
Particle keeps coke size larger, hot strength of coke is higher using the coke granule number within the scope of this.In step b, according to " burnt
Charcoal reactivity and post reaction strength test method ", coke reactivity is carried out to test and post reaction strength is tested, measures sample
The hot strength of coke of affiliated batch coke；Step a and step b is repeated to each batch coke, each batch coke to be measured can be measured
Hot strength of coke.Step c is suitable for the blast furnace of 3000m3, true according to the hot strength of coke for measuring each batch coke in step b
That determines each batch coke enters furnace ratio, loads in mixture entering furnace ratio and can improving the bottom house comprising burner coke for coke using this
The gas permeability of coke reduces blast furnace pressure difference, improves high-temperature stability, so that accurate and effective Instructing manufacture, is that 3000m3 blast furnace is steady
Determine direct motion to provide safeguard.
In the above-mentioned technical solutions, it is preferred that in the step c, the batch coke below of hot strength of coke 60% does not enter
Furnace, the quality accounting 20% of the batch coke of hot strength of coke 60%-63% hereinafter, 66% or more hot strength of coke batch
20% or more the quality accounting of coke, the quality accounting 60% or so of the batch coke of hot strength of coke 63%-66%.
Step c is suitable for 2000m3Blast furnace, determined according to the hot strength of coke for measuring each batch coke in step b each
Batch coke enters furnace ratio, loads in mixture entering furnace ratio and can improving the bottom house coke comprising burner coke for coke using this
Gas permeability, reduce blast furnace pressure difference, improve high-temperature stability, be 2000m thus accurate and effective Instructing manufacture3Blast furnace is stablized suitable
Row provides safeguard.
In conclusion this method simplifies operating procedure, operated convenient for actual production；Pass through control coke granule number and coke
Charcoal granularity keeps coke size larger, and hot strength of coke is higher；When using different quality outsourcing coke, improves hot strength of coke and refer to
Target stability, so that accurate evaluation hot strength of coke improves the saturating of the bottom house coke comprising burner coke with Instructing manufacture
Gas reduces blast furnace pressure difference, improves high-temperature stability, guarantees that large blast furnace keeps long-term stable smooth operation.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to this hair
It is bright to be further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
A kind of coke inspection by sampling provided by the invention and matching method is loaded in mixture convenient for operation, stability is high, improves blast furnace
The gas permeability of lower part coke reduces blast furnace pressure difference, maintains large blast furnace stable smooth operation based on hot strength of coke index.In order into
One step illustrates the present invention, is described in detail as follows:
A kind of coke inspection by sampling and load in mixture matching method, the coke inspection by sampling and load in mixture matching method include with
Lower step:
A, it samples: taking coke to be tested to be greater than 50 kilograms from a batch coke, the coke to be tested includes burner
It is burnt；The grade of the coke to be tested is 25mm-80mm, and wherein the quality accounting of the coke to be tested of 40mm-80mm grade is not
Lower than 50%；
The coke to be tested is crushed to by 20-25mm grade using jaw crusher, therefrom chooses 200 grams as examination
Sample includes 36-38 coke granule in 200 grams of samples；
B, it tests: coke reactivity being carried out to the sample and post reaction strength is tested, measures the coke of the batch coke
Charcoal calorific intensity；
C, load in mixture: the batch coke below of hot strength of coke 63% does not enter furnace, the batch of hot strength of coke 63%-65%
The quality accounting 20% of coke hereinafter, the batch coke of 68% or more hot strength of coke 20% or more quality accounting, coke heat
The quality accounting 60% or so of the batch coke of intensity 65%-68%.
In the technical solution, burner coke is not rejected in the coke to be tested in step a, sampling quantity is greater than 50 kilograms, passes through
Unitary sampling amount is increased, mitigates influence of the burner coke to test, simplifies operating procedure, operated convenient for actual production, it is preferred that
Sampled point is more than at 15 points, by improving sampled point quantity, can further mitigate influence of the burner coke to test；Coke to be tested
Charcoal grade is not more than 80mm, keeps burner coke ratio example in coke to be tested lower, the matter of the coke to be tested of 40mm-80mm grade
It measures accounting and is not less than 50%, make coke to be tested hot strength of coke with higher；It preferably, include 36- in 200 grams of samples
38 coke granules keep coke size larger, hot strength of coke is higher using the coke granule number within the scope of this.In step b,
According to GB/T4000 1 " coke reactivity and post reaction strength test method ", to test progress coke reactivity and instead
Strength test after answering, measures the hot strength of coke of the affiliated batch coke of sample；Step a and step b is repeated to each batch coke,
The hot strength of coke of each batch coke to be measured can be measured.Step c is suitable for the blast furnace of 3000m3, each according to measuring in step b
What the hot strength of coke of batch coke determined each batch coke enters furnace ratio, loads in mixture entering furnace ratio and can changing for coke using this
The gas permeability of the kind bottom house coke comprising burner coke, reduces blast furnace pressure difference, high-temperature stability is improved, thus accurate and effective
Instructing manufacture provides safeguard for 3000m3 blast furnace stable smooth operation.
In the above-mentioned technical solutions, it is preferred that in the step c, for 2000m3 blast furnace, hot strength of coke 60% with
Under batch coke do not enter furnace, the quality accounting 20% of the batch coke of hot strength of coke 60%-63% is hereinafter, coke heat is strong
20% or more the quality accounting of the batch coke of 66% or more degree, the quality of the batch coke of hot strength of coke 63%-66% account for
Than 60% or so.
Step c is suitable for the blast furnace of 2000m3, is determined according to the hot strength of coke for measuring each batch coke in step b each
Batch coke enters furnace ratio, loads in mixture entering furnace ratio and can improving the bottom house coke comprising burner coke for coke using this
Gas permeability, reduce blast furnace pressure difference, improve high-temperature stability, thus accurate and effective Instructing manufacture, stablize for 2000m3 blast furnace suitable
Row provides safeguard.
It when implementing this method, is first sampled, takes coke to be tested greater than 50 kilograms from a batch coke, it is to be checked
It tests in coke and does not reject burner coke, simplify operating procedure, operated convenient for actual production；The grade of coke to be tested is 25mm-
80mm, wherein the quality accounting of the coke to be tested of 40mm-80mm grade is not less than 50%, keeps burner in coke to be tested burnt
Ratio is lower, hot strength of coke with higher；Coke to be tested is crushed to by 20-25mm grade using jaw crusher, from
Middle to choose 200 grams as sample, sample includes 36-38 coke granule, keeps coke size larger, hot strength of coke is higher.So
Sampling is tested afterwards, coke reactivity is carried out to each batch sample and post reaction strength is tested, measures each batch coke
Hot strength of coke.Each batch coke is loaded in mixture into furnace again, according to the calorific intensity for measuring each batch coke in abovementioned steps, for
Different model large blast furnace takes different charge quality ratios, for 3000m3 blast furnace, hot strength of coke 63% below batch
Secondary coke does not enter furnace, and the quality accounting 20% of the batch coke of hot strength of coke 63%-65% is hereinafter, hot strength of coke 68%
20% or more the quality accounting of above batch coke, the quality accounting 60% of the batch coke of hot strength of coke 65%-68%
Left and right；For 2000m3 blast furnace, the batch coke below of hot strength of coke 60% does not enter furnace, hot strength of coke 60%-63%'s
The quality accounting 20% of batch coke hereinafter, the batch coke of 66% or more hot strength of coke 20% or more quality accounting, it is burnt
The quality accounting 60% or so of the batch coke of charcoal calorific intensity 63%-66%.
9 batch coke are sampled using KF-200 type coke reactivity and post reaction strength tester, following table is to adopt
The comparative situation of the calorific intensity data and the prior art that are detected with this method, this method data measured can pass through the heat of coke
Intensity index distinguishes the quality of coke, and establishes corresponding relationship with the pressure difference of blast furnace, ensure that smooth operation of furnace.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (2)
1. a kind of coke inspection by sampling and loading in mixture matching method, which is characterized in that the coke inspection by sampling and load in mixture with analogy
Method the following steps are included:
A, it samples: taking coke to be tested to be greater than 50 kilograms from a batch coke, the coke to be tested includes burner coke；Institute
The grade for stating coke to be tested is 25mm-80mm, and wherein the quality accounting of the coke to be tested of 40mm-80mm grade is not less than
50%；
The coke to be tested is crushed to by 20-25mm grade using jaw crusher, therefrom choose 200 grams be used as sample, 200
It include 36-38 coke granule in gram sample；
B, it tests: coke reactivity being carried out to the sample and post reaction strength is tested, measure the coke heat of the batch coke
Intensity；
C, load in mixture: load in mixture proportion for the blast furnace feeding coke of 2000m3: the batch coke below of hot strength of coke 60% is not
Enter furnace, the quality accounting 20% of the batch coke of hot strength of coke 60%-63% hereinafter, 66% or more hot strength of coke batch
20% or more the quality accounting of coke, the quality accounting 60% or so of the batch coke of hot strength of coke 63%-66%.
2. coke inspection by sampling according to claim 1 and loading in mixture matching method, which is characterized in that right in step c
Load in mixture proportion in the blast furnace feeding coke of 3000m3: the batch coke below of hot strength of coke 63% does not enter furnace, coke heat is strong
The quality accounting 20% of the batch coke of 63%-65% is spent hereinafter, the quality of the batch coke of 68% or more hot strength of coke accounts for
Than 20% or more, the quality accounting 60% or so of the batch coke of hot strength of coke 65%-68%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111122379A (en) * | 2020-01-07 | 2020-05-08 | 武钢集团昆明钢铁股份有限公司 | Method for detecting adaptability of coking coal |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808623A (en) * | 2014-02-20 | 2014-05-21 | 武钢集团昆明钢铁股份有限公司 | Method for detecting reactivity and post-reaction strength of coke |
-
2018
- 2018-12-29 CN CN201811636980.9A patent/CN109709298A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808623A (en) * | 2014-02-20 | 2014-05-21 | 武钢集团昆明钢铁股份有限公司 | Method for detecting reactivity and post-reaction strength of coke |
Non-Patent Citations (6)
| Title |
|---|
| 中华人民共和国国家质量监督检验检疫总局 等发布: "GB/T 4000-2017 焦炭反应性及反应后强度试验方法", 《中华人民共和国国家标准》 * |
| 张殿有 等: "《高炉冶炼操作技术》", 31 March 2006, 北京：冶金工业出版社 * |
| 李宏飞 等: "3200m3高炉入炉焦炭低成本优化", 《天津冶金》 * |
| 王建民 等: "首钢迁钢公司1号高炉开炉一年达产实践", 《2006年全国炼铁生产技术会议暨炼铁年会文集》 * |
| 郭伟 等: "焦炭热性质参数的影响因素与改进", 《冶金能源》 * |
| 黎钢: "天钢大型高炉使用外购焦炭的实践", 《天津冶金》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111122379A (en) * | 2020-01-07 | 2020-05-08 | 武钢集团昆明钢铁股份有限公司 | Method for detecting adaptability of coking coal |
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Application publication date: 20190503 |