CN110343794A - A kind of active method for quantitatively evaluating of blast furnace crucibe - Google Patents
A kind of active method for quantitatively evaluating of blast furnace crucibe Download PDFInfo
- Publication number
- CN110343794A CN110343794A CN201910636032.3A CN201910636032A CN110343794A CN 110343794 A CN110343794 A CN 110343794A CN 201910636032 A CN201910636032 A CN 201910636032A CN 110343794 A CN110343794 A CN 110343794A
- Authority
- CN
- China
- Prior art keywords
- blast furnace
- furnace
- unit
- cupola well
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0639—Performance analysis of employees; Performance analysis of enterprise or organisation operations
- G06Q10/06393—Score-carding, benchmarking or key performance indicator [KPI] analysis
Landscapes
- Business, Economics & Management (AREA)
- Human Resources & Organizations (AREA)
- Engineering & Computer Science (AREA)
- Development Economics (AREA)
- Educational Administration (AREA)
- Economics (AREA)
- Entrepreneurship & Innovation (AREA)
- Chemical & Material Sciences (AREA)
- Strategic Management (AREA)
- Operations Research (AREA)
- Theoretical Computer Science (AREA)
- Quality & Reliability (AREA)
- Tourism & Hospitality (AREA)
- Physics & Mathematics (AREA)
- General Business, Economics & Management (AREA)
- General Physics & Mathematics (AREA)
- Marketing (AREA)
- Manufacturing & Machinery (AREA)
- Game Theory and Decision Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The present invention provides a kind of active method for quantitatively evaluating of blast furnace crucibe, and with furnace cylinder working active index characterization cupola well activity, furnace cylinder working active index is the ratio of the dead coke heap central temperature of blast furnace and each layer electric thermo-couple temperature mean value of bosh gas index.It is compared with the traditional method, replaces each layer center electric thermo-couple temperature mean value of cupola well furnace bottom using dead coke heap central temperature, can more directly reflect state of temperature and its variation of dead coke heap, feed back the liquid permeability and gas permeability of dead coke heap at the first time.The shortcomings that the present invention overcomes conventional model calculated result lag, distortion, to realize, fast and accurately quantitatively evaluating cupola well activated state provides more scientific judgment basis.
Description
Technical field
The present invention relates to technical field of blast furnace ironmaking, and in particular to a kind of active method for quantitatively evaluating of blast furnace crucibe.
Background technique
The direct motion steady in a long-term of modern blast furnace is the key factor that iron and steel enterprise obtains greatest benefit, and cupola well activity is still
As blast furnace " heart " maintains the sound development of blast fumance.In recent years, due to material quality deterioration, quantity of slag increase, stopping
The reasons such as furnace is frequent, operating concept is unsound lead to the not normal Frequent Accidents of blast furnace crucibe activity, bring weight to production process
Big security risk and economic loss.Therefore, the active quantitatively evaluating of cupola well and diagnosis are that current blast furnace ironmaking is urgently to be resolved
Critical issue.
In the prior art, Shoudu Iron and Steel Co is proposed with each layer center electric thermo-couple temperature mean value of cupola well furnace bottom and each layer of bosh gas index
The ratio of electric thermo-couple temperature mean value indicates the penetrating power of dead coke heap.But, in practice it has proved that, there is lag, distortion in this method
The phenomenon that, especially when furnace core and side wall temperatures all reduce, which cannot react cupola well activity change.Therefore, for tradition
Model there are the problem of, there is an urgent need to develop a kind of new blast furnace crucibe activity method for quantitatively evaluating.
Summary of the invention
The invention aims to make up prior art defect, a kind of blast furnace crucibe activity method for quantitatively evaluating is provided, it is real
Online quantitatively evaluating now active to blast furnace crucibe.
To achieve the above object, the present invention is achieved by following scheme:
The present invention provides a kind of blast furnace crucibe activity method for quantitatively evaluating, by the dead coke heap central temperature of blast furnace and cupola well
The ratio of each layer electric thermo-couple temperature mean value of side wall, is defined as furnace cylinder working active index, characterizes furnace with furnace cylinder working active index
Cylinder activity, is realized to the active quantitatively evaluating of blast furnace crucibe.
Preferably, furnace cylinder working active index is the dead coke heap central temperature of blast furnace and each layer electric thermo-couple temperature of bosh gas index
The ratio of mean value, furnace cylinder working active index (Hearth working activity)=dead coke heap central temperature
(TDeadmanEach layer electric thermo-couple temperature mean value (Tc) of)/bosh gas index.
Preferably, dead coke heap central temperature calculates method are as follows:
In formula, TfFor theoretical temperature combustion, unit is DEG C；VboshFor gas flowrate in bosh, unit m3/min；D is cupola well
Diameter, unit m；FR is fuel ratio, unit kg/t；Δ T is slag fluidity index, and unit is DEG C；ηco.cFor furnace roof CO
Utilization rate, unit %；K is function coefficient；DpcokeFor the dead stock column coke size of furnace core, unit mm.
Preferably, theoretical temperature combustion
In formula, QRCO2It burns for carbon and generates CO2The heat of release, unit kJ；QRH2OIt is generated for hydrogen burning in fuel
H2The heat of O release, unit kJ.
Preferably, slag fluidity index Δ T=TTapping-TStream-55；
In formula, TTappingFor blast furnace casting temperature, unit is DEG C；TStreamFor clinker flowing temperature, unit is DEG C.
Preferably, when furnace cylinder working active index is between 10.5~12.5, slag iron can smoothly flow into cocurrent and come out of the stove
Cylinder, cupola well activity is normal, and when furnace cylinder working active index is lower than 10.5, the gas permeability and liquid permeability of dead stock column are deteriorated, cupola well
Activity decline, when furnace cylinder working active index is lower than 9, cupola well activity is not normal.
The beneficial effects of the present invention are:
Blast furnace crucibe activity method for quantitatively evaluating of the present invention replaces each layer central hot of cupola well furnace bottom with dead coke heap central temperature
Galvanic couple temperature mean value can more directly reflect state of temperature and its variation of dead coke heap, feed back the saturating of dead coke heap at the first time
Fluidity and gas permeability.The shortcomings that the present invention overcomes conventional model calculated result lag, distortion, fast and accurately measures to realize
Change evaluation cupola well activated state and more scientific judgment basis is provided.
Detailed description of the invention
Fig. 1 is 4747m in the embodiment of the present invention3The furnace cylinder working of the entire working of a furnace fluctuation of blast furnace and recovery process actively refers to
Number calculated result.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical solution of the present invention is clearly and completely described, it is clear that institute
The embodiment of description is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the implementation in the present invention
Example, all other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The scope of protection of the invention.
A kind of blast furnace crucibe activity method for quantitatively evaluating, by the dead coke heap central temperature of blast furnace and each layer thermoelectricity of bosh gas index
The ratio of even temperature mean value, is defined as furnace cylinder working active index, with furnace cylinder working active index characterization cupola well activity, realizes
To the active quantitatively evaluating of blast furnace crucibe.
Furnace cylinder working active index is the ratio of the dead coke heap central temperature of blast furnace and each layer electric thermo-couple temperature mean value of bosh gas index
Value, furnace cylinder working active index (Hearth working activity)=dead coke heap central temperature (TDeadman)/cupola well side
Each layer electric thermo-couple temperature mean value (Tc) of wall.
Dead coke heap central temperature calculates method are as follows:
In formula, TfFor theoretical temperature combustion, unit is DEG C；VboshFor gas flowrate in bosh, unit m3/min；D is cupola well
Diameter, unit m；FR is fuel ratio, unit kg/t；Δ T is slag fluidity index, and unit is DEG C；ηco.cFor furnace roof CO
Utilization rate, unit %；K is function coefficient；DpcokeFor the dead stock column coke size of furnace core, unit mm.
Theoretical temperature combustion
In formula, QRCO2It burns for carbon and generates CO2The heat of release, unit kJ；QRH2OIt is generated for hydrogen burning in fuel
H2The heat of O release, unit kJ.
Slag fluidity index Δ T=TTapping-TStream-55；
In formula, TTappingFor blast furnace casting temperature, unit is DEG C；TStreamFor clinker flowing temperature, unit is DEG C.
When furnace cylinder working active index is between 10.5~12.5, slag iron can smoothly flow into cocurrent and go out cupola well, cupola well
Active normal, when furnace cylinder working active index is lower than 10.5, the gas permeability and liquid permeability of dead stock column are deteriorated, under cupola well activity
Drop, when furnace cylinder working active index is lower than 9, cupola well activity is not normal.
The method of the present invention is installed into certain 4747m at home3On blast furnace two-level computer system, carries out data online and adopt
Collection and calculating carry out real-time quantization evaluation to cupola well activity.
4747m3Blast furnace Mr. Yu carries out 72 hours annual overhauls, working of a furnace monolithic stability before damping down on November 11, to November 13
Direct motion, but due to being influenced by air port and cooling wall breakage leak factor, cupola well Warm status stability is poor, furnace temperature fluctuation, pressure
Difference, which occasionally has, stands out.Furnace cylinder working active index fluctuates between 11~12, cupola well activated state generally in normal level, but
Downward trend is integrally presented in data, and cupola well activated state just has begun downslide before showing damping down；Table 1 is 4747m3Blast furnace
Early November main economic and technical indices mean value.
1 4747m of table3Blast furnace early November technical-economic index mean value
After November 14 furnace compound wind, the working of a furnace starts to deteriorate, air quantity than it is normal when atrophy 150~200m3·min-1, pressure
Difference frequency is numerous to stand out, and wide ruler slide rule phenomenon increases, and starts apparent pipeline trip occur, and cool after tapping furnace temperature is first hot, fluctuation is acute
It is strong, cupola well Warm status loss of stability.Furnace cylinder working active index drops to 9~10.5 level, and minimum is November 25
8.99, cupola well activity is not normal.Table 2 is 4747m3Blast furnace mid or late November main economic and technical indices mean value.
2 4747m of table3Blast furnace mid or late November technical-economic index mean value
At the beginning of 12 months, by taking improvement raw material and fuel quality, reduce coke load, the measures such as anxious amount in increase, cupola well is lived
Property has obtained apparent improvement.Furnace cylinder working active index is improved to 10~11 level, and conditions of blast furnace tends to normally, every
Economic indicator is improved；Table 3 is 4747m3The technical-economic index mean value of blast furnace early and middle ten days in December.
3 4747m of table3Blast furnace early and middle ten days in December technical-economic index mean value
The furnace cylinder working active index calculated result of entire working of a furnace fluctuation and recovery process is as shown in Figure 1.It was verified that
Cupola well activity quantization method proposed by the present invention can really react cupola well activated state, effectively help blast furnace operating person
Cupola well activity is held in time, and when cupola well activity declines or is not normal, it is dry operation can be carried out in first time discovery and as early as possible
In advance, the loss caused by deteriorating because of cupola well activity is avoided in time, is played in terms of keeping blast furnace steady in a long-term positive
Effect.
In the description of this specification, the description meaning of reference term " one embodiment ", " example ", " specific example " etc.
Refer to that specific features described in conjunction with this embodiment or example, structure, material live feature and be contained at least one reality of the invention
It applies in example or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or show
Example.Moreover, particular features, structures, materials, or characteristics described can be in any one or more embodiment or examples
In can be combined in any suitable manner.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment
All details are described to the greatest extent, also do not limit the specific embodiment that the invention is only.It obviously, can according to the content of this specification
It makes many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to better explain the present invention
Principle and practical application, so that skilled artisan be enable to better understand and utilize the present invention.The present invention is only
It is limited by claims and its full scope and equivalent.
Claims (5)
1. a kind of blast furnace crucibe activity method for quantitatively evaluating, which is characterized in that by the dead coke heap central temperature T of blast furnaceDeadmanWith cupola well
Each layer electric thermo-couple temperature mean value T of side wallcRatio, be defined as furnace cylinder working active index, with furnace cylinder working active index characterization
Cupola well activity, is realized to the active quantitatively evaluating of blast furnace crucibe.
2. blast furnace crucibe activity method for quantitatively evaluating according to claim 1, which is characterized in that the dead coke heap center temperature
Spend calculation method are as follows:
In formula, TfFor theoretical temperature combustion, unit is DEG C；VboshFor gas flowrate in bosh, unit m3/min；D is cupola well diameter,
Unit is m；FR is fuel ratio, unit kg/t；Δ T is slag fluidity index, and unit is DEG C；ηco.cFor furnace roof CO utilization
Rate, unit %；K is function coefficient；DpcokeFor the dead stock column coke size of furnace core, unit mm.
3. blast furnace crucibe activity method for quantitatively evaluating according to claim 2, which is characterized in that the Theoretical combustion temperature
In formula,It burns for carbon and generates CO2The heat of release, unit kJ；H is generated for hydrogen burning in fuel2O is released
The heat put, unit kJ.
4. blast furnace crucibe activity method for quantitatively evaluating according to claim 2, which is characterized in that the slag fluidity refers to
Number Δ T=TTapping-TStream-55；
In formula, TTappingFor blast furnace casting temperature, unit is DEG C；TStreamFor clinker flowing temperature, unit is DEG C.
5. blast furnace crucibe activity method for quantitatively evaluating according to claim 1, which is characterized in that the furnace cylinder working is active
When index is between 10.5~12.5, slag iron can smoothly flow into cocurrent and go out cupola well, and cupola well activity is normal, when furnace cylinder working is living
When the index that jumps is lower than 10.5, the gas permeability and liquid permeability of dead stock column are deteriorated, cupola well activity decline, when furnace cylinder working active index is low
When 9, cupola well activity is not normal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910636032.3A CN110343794A (en) | 2019-07-15 | 2019-07-15 | A kind of active method for quantitatively evaluating of blast furnace crucibe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910636032.3A CN110343794A (en) | 2019-07-15 | 2019-07-15 | A kind of active method for quantitatively evaluating of blast furnace crucibe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110343794A true CN110343794A (en) | 2019-10-18 |
Family
ID=68175272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910636032.3A Pending CN110343794A (en) | 2019-07-15 | 2019-07-15 | A kind of active method for quantitatively evaluating of blast furnace crucibe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110343794A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110819748A (en) * | 2019-11-07 | 2020-02-21 | 中冶京诚工程技术有限公司 | Control method, device and system for blast furnace bottom and hearth |
| CN112111617A (en) * | 2020-09-03 | 2020-12-22 | 中冶赛迪工程技术股份有限公司 | Method for quantitatively evaluating activity index of blast furnace hearth |
| CN113528721A (en) * | 2021-06-30 | 2021-10-22 | 包头钢铁（集团）有限责任公司 | Establishment method for evaluating activity degree of blast furnace hearth |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002266011A (en) * | 2001-03-12 | 2002-09-18 | Nippon Steel Corp | Method for estimating furnace condition in blast furnace |
| CN102758039A (en) * | 2011-04-28 | 2012-10-31 | 宝山钢铁股份有限公司 | Method for quantitatively evaluating activity of tuyere convolute region |
| CN104388613A (en) * | 2014-11-13 | 2015-03-04 | 北京首钢股份有限公司 | Method for quantitative evaluation of activeness of blast furnace hearth |
| CN106755672A (en) * | 2017-02-27 | 2017-05-31 | 本钢板材股份有限公司 | The furnace cylinder working active index quantization method of monitoring blast furnace crucibe activity |
| CN109609714A (en) * | 2018-12-04 | 2019-04-12 | 江苏省沙钢钢铁研究院有限公司 | A kind of diagnostic method of large blast furnace furnace core accumulation |
-
2019
- 2019-07-15 CN CN201910636032.3A patent/CN110343794A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002266011A (en) * | 2001-03-12 | 2002-09-18 | Nippon Steel Corp | Method for estimating furnace condition in blast furnace |
| CN102758039A (en) * | 2011-04-28 | 2012-10-31 | 宝山钢铁股份有限公司 | Method for quantitatively evaluating activity of tuyere convolute region |
| CN104388613A (en) * | 2014-11-13 | 2015-03-04 | 北京首钢股份有限公司 | Method for quantitative evaluation of activeness of blast furnace hearth |
| CN106755672A (en) * | 2017-02-27 | 2017-05-31 | 本钢板材股份有限公司 | The furnace cylinder working active index quantization method of monitoring blast furnace crucibe activity |
| CN109609714A (en) * | 2018-12-04 | 2019-04-12 | 江苏省沙钢钢铁研究院有限公司 | A kind of diagnostic method of large blast furnace furnace core accumulation |
Non-Patent Citations (1)
| Title |
|---|
| 代兵等: "高炉炉缸活性量化计算模型的开发与实践", 《中国冶金》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110819748A (en) * | 2019-11-07 | 2020-02-21 | 中冶京诚工程技术有限公司 | Control method, device and system for blast furnace bottom and hearth |
| CN112111617A (en) * | 2020-09-03 | 2020-12-22 | 中冶赛迪工程技术股份有限公司 | Method for quantitatively evaluating activity index of blast furnace hearth |
| CN112111617B (en) * | 2020-09-03 | 2022-03-11 | 中冶赛迪工程技术股份有限公司 | Method for quantitatively evaluating activity index of blast furnace hearth |
| CN113528721A (en) * | 2021-06-30 | 2021-10-22 | 包头钢铁（集团）有限责任公司 | Establishment method for evaluating activity degree of blast furnace hearth |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110343794A (en) | A kind of active method for quantitatively evaluating of blast furnace crucibe | |
| CN102928455B (en) | Method for detecting high-temperature metallurgical performance of coke | |
| CN107641669B (en) | It is a kind of to realize 4000m using scanning radar3The method that blast furnace efficient low-consume is smelted | |
| CN102251100B (en) | Method for sintering vanadium-titanium magnetite concentrate at high negative pressure and high air quantity | |
| CN106755672A (en) | The furnace cylinder working active index quantization method of monitoring blast furnace crucibe activity | |
| CN106987665A (en) | A kind of production technology that large blast furnace coke is refined with low-heat state coal at high proportion | |
| CN106319118B (en) | A kind of method for extending blast furnace copper cooling stave service life | |
| CN107299169A (en) | The computational methods of blast furnace short term damping-down material | |
| JP4910640B2 (en) | Blast furnace operation method | |
| CN104211417A (en) | Main trough castable for smelting vanadium-titanium ore | |
| CN105506270B (en) | A kind of method for reducing injecting coal quantity, improving pellet yield and quality | |
| CN104789720B (en) | A kind of distributing method of blast furnace pelletizing | |
| CN108611456B (en) | Method for controlling furnace top temperature through upper and lower regulation of blast furnace under oxygen-enriched condition | |
| CN204999927U (en) | Wear -resisting sediment copper cooling wall of easily hanging | |
| CN104232821B (en) | 3000m 3above large blast furnace blow-on dress distribution | |
| CN106834572A (en) | The activity index of hearth quantization method of monitoring blast furnace crucibe activity | |
| CN109811097A (en) | A kind of predictor method of BF Design production capacity | |
| CN104195274A (en) | Method for judging actual differential pressure of blast furnace | |
| CN108504803A (en) | A kind of technique improving Coal Injection Amount into BF | |
| Kurunov et al. | Analysis of the behavior of alkalis in a blast furnace | |
| CN110343795A (en) | A kind of active quantization signifying method of blast furnace crucibe | |
| CN109811098A (en) | A kind of low silicon smelting method of 1000 cubes of grade blast furnaces | |
| Aksel’rod | Steelmaking. Use of refractory materials. Correction of trends. Predictions | |
| CN108660272A (en) | It a kind of compound furnace retaining furnace charge of blast furnace and its prepares and furnace retaining method | |
| CN109186793B (en) | Method for measuring heat preservation performance of metallurgical melt heat preservation agent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191018 |