CN102023176A - Method for acquiring high temperature characteristics of iron ore powder in sintering process - Google Patents
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Abstract
The invention relates to a method for acquiring high temperature characteristics of iron ore powder in a sintering process, belonging to the technical field of sintered ore powder monitoring. By adopting the CaO reagent, a sampling device, a sample mixer, a sample container and a high-temperature confocal microscope are utilized to acquire the high temperature characteristics of iron ore powder in the sintering process. The method comprises the following steps: respectively making -100 mesh powders from the iron ore powder and the CaO reagent in the sampling device, evenly mixing in the sample mixer to form a sample, and putting the sample on a platinum sheet; putting the platinum sheet to the bottom of an Al2O3 crucible, and putting the Al2O3 crucible under the high-temperature confocal microscope for observation; raising and lowering the temperature under the temperature schedule of simulating sintering temperature in the air atmosphere; and observing the reaction process of the iron ore powder and the CaO reagent, and determining the initial liquid-phase formation temperature and the liquid-phase solidification finish temperature according to the phenomena. In the invention, since the process is visible, the judgment on the key temperature spots is more accurate; since the whole process is observed, the judgment is more comprehensive, thereby reducing the times of tests and being beneficial to analysis on high temperature characteristics of different iron ore powders and realization of scientific optimal ore proportioning.
Description
Technical field
The invention belongs to sintering breeze monitoring technical field, particularly relate to a kind of method of obtaining Iron Ore Powder hot properties in the sintering process, can observe the reaction of Iron Ore Powder and flux in the sintering high temperature process in good time, judge that accurately Iron Ore Powder is generated to the whole pyroprocess of the fixed end of a period of liquid phase from initial liquid phase.
Background technology
As one of topmost raw material of blast furnace, the performance of sintering deposit has material impact for every technical economical index of blast furnace; And the performance of sintering deposit has the raw material that depends on himself to a great extent---the performance of Iron Ore Powder.Because the bond effect of sintering deposit and final performance depend on the physical-chemical reaction that Iron Ore Powder and flux carry out, to a great extent so the high-temperature behavior of Iron Ore Powder is paid close attention to by numerous researcher when high temperature.
In recent years, hot properties by the research Iron Ore Powder is optimized Iron Ore Matching in Sintering, obtained bigger progress, the index that a series of judgement Iron Ore Powder hot properties occurred, as voltinism, liquid phase flow, meltbility etc., have a lot of meanings for the hot properties of estimating Iron Ore Powder in the sintering process.Yet also there is weak point in existing research method.
See on the whole, research method to the Iron Ore Powder hot properties can reduce two classes at present, the variation of Iron Ore Powder in pyroprocess judged and inferred to one class by " end of a period attitude " after observing sintering, as ore deposit facies analysis and sem analysis, promptly be to burn till mineral in the sample by Iron Ore Powder to judge that Iron Ore Powder and flux which reaction have taken place, how to have generated mineral in the sintering process, generate these mineral as for when reacting, then can only infer theoretically; Another kind of is the hot properties of judging Iron Ore Powder by the change of shape that compares " initial state " and " end of a period attitude " from macroscopic view, liquid phase flow test as University of Science ﹠ Technology, Beijing's exploitation, be and make little cake after Iron Ore Powder and the CaO reagent mix, put into the high temperature furnace heating, measure mobile size by little cake of initial state relatively and the spreading area that burns the little cake in back at last, be difficult to judge for the liquid phase flow that when reacts, causes etc.; Also having the reference mensuration slag of Northeastern University's exploitation and the meltbility method that the coal ash fusion temperature method is measured Iron Ore Powder, also is to judge the melting characteristic of Iron Ore Powder by comparing the difference of sintering front and back sample on short transverse.
Say on the stricti jurise, these two class methods are because the reaction of Iron Ore Powder and flux under can't the Direct observation condition of high temperature, not only be difficult to accurately judge the temperature of initial liquid phase generation and the temperature of the fixed end of a period of liquid phase etc., and can't understand the real-time change process of Iron Ore Powder and agent reaction in the high temperature change procedure, after generating for initial liquid phase, how liquid phase develops, liquid phase is how fixed etc. then is difficult to grasp especially.Along with the urgency that the Iron Ore Powder high-temperature behavior is understood in depth, it is huge that these defectives seem all the more.
Summary of the invention
The object of the present invention is to provide a kind of method of obtaining Iron Ore Powder hot properties in the sintering process, only overcome in the past by observe Iron Ore Powder after burning " end of a period attitude " or by before burning with burn the simple change of shape of back sample and judge the defective of Iron Ore Powder hot properties, can observe the reaction of Iron Ore Powder and flux in the sintering high temperature process in good time, judge that accurately Iron Ore Powder is generated to the whole pyroprocess of the fixed end of a period of liquid phase from initial liquid phase.And the phenomenon that takes place in the whole pyroprocess carried out Real Time Observation and analysis.
The present invention adopts CaO reagent, obtains Iron Ore Powder hot properties in the sintering process by sample making apparatus, mixed sample device, dress sample and high temperature confocal microscope.Iron Ore Powder and CaO reagent are made-100 purpose powder respectively in sample making apparatus (3), be 4 to join sample by basicity then, and mixing mixed the formation sample in 8-12 minute in mixed sample device, got the 0.6-1.2g recombined sample then and was placed on the platinum sheet (3*3mm), and the platinum sheet is put into Al
2O
3The bottom of crucible is then with Al
2O
3Crucible is put into the high temperature confocal microscope.(from 25 ℃ to 800 ℃, heating rate is 2 ℃/s in the temperature schedule of simulating sintering temperature; 800 ℃ are incubated 60s down; Be raised to 1300 ℃ from 800 ℃ of heating rates then with 20 ℃/s; 1300 ℃ are incubated 120s down; Reduce to 25 ℃ from 1300 ℃ of rate of temperature fall then with 2 ℃/s) under carry out heating and cooling, atmosphere is air; Observe the course of reaction of Iron Ore Powder and CaO reagent, phenomenon determines that initial liquid phase generates temperature and the fixed finishing temperature of liquid phase according to the observation.
The initial liquid phase formation temperature is in intensification heating process, and sample moves (with the speed of 0.1-0.3mm/s) rapidly from stationary state to unexpected generation, the temperature when the record sample changes, and this is the initial liquid phase formation temperature.
The fixed finishing temperature of liquid phase is in cool down, and sample to the conversion process of solidifying, when the liquid phase surface is covered fully by one deck solid phase, is noted this moment temperature from molten state, and this is the fixed finishing temperature of liquid phase.
Begin to generate from liquid phase, to the fixed end of a period of liquid phase, this process all can be observed, and these features that show under different temperatures according to dissimilar Iron Ore Powder, hot properties to different Iron Ore Powder compares, and then provides theoretical direction for optimizing Iron Ore Matching in Sintering.
The present invention has realized following innovation: one, and the judgement that Iron Ore Powder liquid phase in sintering process is generated temperature and consolidation temperature etc. is directly perceived more and accurate; Two, can comprehensively understand generation, the development of Iron Ore Powder liquid phase in pyroprocess.
The invention has the beneficial effects as follows, this invention is by observe Iron Ore Powder and the reaction of flux under the condition of high temperature in good time, can accurately judge the temperature of temperature, liquid phase status of development and the fixed end of a period of liquid phase of liquid phase formation, by the hot properties of accurate evaluation Iron Ore Powder, for quality and the performance of estimating sintering deposit provides important reference frame.
The method of home position observation Iron Ore Powder hot properties is adopted in this invention, can accurately obtain Iron Ore Powder is generated to the fixed end of a period of liquid phase from initial liquid phase in sintering process whole pyroprocess, especially can obtain the temperature spot of two keys of the fixed finishing temperature of initial liquid phase formation temperature and liquid phase.The method of recently judging the Iron Ore Powder hot properties is compared with " end of a period attitude " specimen shape with existing simple lean on " initial state ", this invention is because " visual " and more accurate to the judgement of each key temperatures point, and, can make that judgement is comprehensive more and reduce test number (TN) because whole process is observed.This invention is to the hot properties of analyzing different Iron Ore Powder and realize that scientifically Optimization Ore Matching has good help.
Description of drawings
Below in conjunction with drawings and Examples patent of the present invention is further specified.
Fig. 1 is for analyzing the synoptic diagram of Iron Ore Powder hot properties method in the sintering process.Wherein, Iron Ore Powder 1, CaO reagent 2, sample making apparatus 3, mixed sample device 4, platinum sheet 5, Al
2O
3Crucible 6, high temperature confocal microscope 7.
Fig. 2 is the synoptic diagram of simulation sintering process temperature schedule.
Fig. 3 is the concept map that the liquid phase of a kind of Iron Ore Powder of expression judgement of the present invention begins to generate temperature methods.The A breeze: left figure breeze temperature is 1082 ℃, and right figure is 1093 ℃.
Fig. 4 is that a kind of Iron Ore Powder of expression observation of the present invention liquid phase in pyroprocess generates the synoptic diagram that changes.The A breeze: left figure breeze temperature is 1260 ℃, and right figure is 1300 ℃.
Fig. 5 is the synoptic diagram of expression a kind of Iron Ore Powder of judgement of the present invention fixed end of a period of liquid phase in pyroprocess.The A breeze: the picture left above breeze temperature is 1180 ℃, and top right plot is 1160 ℃, and lower-left figure breeze temperature is 1140 ℃, and bottom-right graph is 1120 ℃.
Fig. 6 is the concept map that liquid phase that expression judgement of the present invention another kind of Iron Ore Powder is declared begins to generate temperature methods.The B breeze: left figure breeze temperature is 1029 ℃, and right figure is 1038 ℃.
Fig. 7 is that the another kind of Iron Ore Powder of expression observation of the present invention liquid phase in pyroprocess generates the synoptic diagram that changes.The B breeze: left figure breeze temperature is 1299 ℃, and right figure is 1310 ℃.
Fig. 8 is the synoptic diagram of the expression another kind of Iron Ore Powder of judgement of the present invention fixed end of a period of liquid phase in pyroprocess.The B breeze: the picture left above breeze temperature is 1200 ℃, and top right plot is 1180 ℃, and lower-left figure breeze temperature is 1160 ℃, and bottom-right graph is 1140 ℃.
Embodiment
The Iron Ore Powder of Fig. 3-5 indication is with a kind of Iron Ore Powder, and the Iron Ore Powder of Fig. 6-8 indication is another kind of Iron Ore Powder.By these two kinds of different Iron Ore Powder are melted in pyroprocess and fixed behavior is observed, relatively and analyze, can grasp the hot properties of different Iron Ore Powder and find their similarities and differences.
In Fig. 1, Iron Ore Powder 1 and CaO reagent 2 respectively by sample making apparatus 3, are made-100 orders respectively, then under the condition of a certain amount of Iron Ore Powder, be 4 to carry out with addition of CaO by basicity; In mixed sample device 4, mix 10 minutes with the two abundant mixing; The sample that mixes is placed on the platinum sheet 5 of 3*3mm, then the platinum sheet is put into Al
2O
3The bottom of crucible 6; With Al
2O
3Crucible is put into high temperature confocal microscope 7 and is observed, and the temperature schedule of test is seen Fig. 2.
In the heating-cooling process, can initially form the temperature of liquid phase and fixed finishing temperature etc. by high temperature confocal microscopy sem observation sample, the temperature that the judgement liquid phase begins to occur and the temperature of the fixed end of a period of liquid phase, thus the similarities and differences of different Iron Ore Powder aspect hot properties obtained.
Except observing the temperature that initial liquid phase begins to generate and the temperature of the fixed end of a period of liquid phase, the complexity of Iron Ore Powder in pyroprocess changes and also can be observed.The different characteristic that different Iron Ore Powder are presented in this process can be used as the important means of estimating different Iron Ore Powder hot properties.Be two kinds of different breezes at the synoptic diagram that there are differences aspect fusing and the fixed behavior from Fig. 3-Fig. 8.Two kinds of breezes are respectively breeze A and breeze B, and the two main chemical constitution is listed in table 1.
Table 1
| TFe | SiO 2 | Al 2O 3 | LOI | |
| Breeze A | 67.20 | 1.03 | 0.65 | 1.59 |
| Breeze B | 58.50 | 4.36 | 1.22 | 11.21 |
As shown in Figure 3, left side figure be the observation figure of breeze A 1082 ℃ under, and right figure is the observation figure under 1093 ℃, visible rising along with temperature, and the sample generation is tangible mobile, and finally can determine the temperature that liquid phase begins to generate is 1082 ℃.In like manner, according to Fig. 6, the liquid phase initial temperature that can determine breeze B is 1029 ℃.
Fig. 4 and Fig. 7 are respectively breeze A and the melting behavior synoptic diagram of breeze B in the sintering high temperature process.From Fig. 4 as seen, breeze A is from 1260 ℃ to 1300 ℃, reaches in 40 ℃ the scope, and the development of liquid phase is very slow, does not have big variation substantially; From Fig. 7 as seen, breeze B is from 1299 ℃ to 1310 ℃, short 11 ℃ scope, and liquid phase promptly has greatly changed, and shows as liquid phase and moves rapidly, and expansion is very fast.
In fact, the different liquid phase melting behaviors that different Iron Ore Powder show in the sintering high temperature process have represented their different qualities.Can find the melting behavior performance of different Iron Ore Powder under different temperatures well by this inventive method.
Fig. 5 and Fig. 8 are respectively breeze A and the fixed behavior figure of breeze B in temperature-fall period.As seen from Figure 5, up to 1120 ℃, the surface of liquid phase is just covered by one deck solid phase institute substantially fully, the fixed end of a period of this performance liquid phase; For breeze B, can judge that from Fig. 8 its fixed finishing temperature is 1130 ℃.
Table 2 is depicted as initial liquid phase formation temperature and the fixed finishing temperature of liquid phase of breeze A and breeze B.As seen, the initial liquid phase formation temperature of breeze A is high than breeze B's, but the fixed finishing temperature of its liquid phase then is lower than breeze B.
As everyone knows, the temperature that liquid phase begins to form in sintering process is low more, and the reaction of expression breeze and flux is easy more, and the development of liquid phase is rapid more; And liquid phase is fixed late more, and the expression consolidation time is longer, and the effect of liquid phase bonding is good more.
As seen, by this invention, liquid phase formation temperature, liquid phase fixed finishing temperature and the liquid phase development form of Iron Ore Powder in sintering process carried out determining very accurately that this difference and realization Optimization Ore Matching for the different Iron Ore Powder performances of effective analysis is significant.
Table 2
| The initial liquid phase formation temperature | The fixed finishing temperature of liquid phase | |
| Breeze A | 1082℃ | 1120℃ |
| Breeze B | 1029℃ | 1130℃ |
Claims (4)
1. a method of obtaining Iron Ore Powder hot properties in the sintering process adopts CaO reagent, obtains Iron Ore Powder hot properties in the sintering process by sample making apparatus, mixed sample device, dress sample and high temperature confocal microscope; Iron Ore Powder (1) and CaO reagent (2) are made-100 purpose powder respectively in sample making apparatus (3), mix the formation sample then in mixed sample device (4), and sample is placed on the platinum sheet (5); Platinum sheet (5) is put into Al
2O
3The bottom of crucible (6) is then with Al
2O
3Crucible (6) places under the high temperature confocal microscope (7) and observes; Carry out heating and cooling under the temperature schedule of simulation sintering temperature, from 25 ℃ to 800 ℃, heating rate is 2 ℃/s; 800 ℃ are incubated 60s down; Be raised to 1300 ℃ from 800 ℃ of heating rates then with 20 ℃/s; 1300 ℃ are incubated 120s down; Reduce under 25 ℃ from 1300 ℃ of rate of temperature fall with 2 ℃/s then and carry out, atmosphere is air; Observe the course of reaction of Iron Ore Powder and CaO reagent, phenomenon determines that initial liquid phase generates temperature and the fixed finishing temperature of liquid phase according to the observation.
2. method according to claim 1 is characterized in that, described temperature schedule is meant: from 25 ℃ to 800 ℃, heating rate is 2 ℃/s; 800 ℃ are incubated 60s down; Be raised to 1300 ℃ from 800 ℃ of heating rates then with 20 ℃/s; 1300 ℃ are incubated 120s down; Reduce to 25 ℃ from 1300 ℃ of rate of temperature fall then with 2 ℃/s.
3. method according to claim 1, it is characterized in that described initial liquid phase formation temperature is in intensification heating process, sample moves to the speed of unexpected generation with 0.1-0.3mm/s from stationary state, temperature when the record sample changes, this is the initial liquid phase formation temperature.
4. method according to claim 1, the fixed finishing temperature of described liquid phase is in cool down, to the conversion process of solidifying, when the liquid phase surface was covered fully by one deck solid phase, note this moment temperature was the fixed finishing temperature of liquid phase to sample from molten state.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809579A (en) * | 2012-07-23 | 2012-12-05 | 辽宁科技大学 | Method for detecting high-temperature mineralization characteristic of sintered iron ores |
| CN103235000A (en) * | 2013-04-18 | 2013-08-07 | 首钢总公司 | Experimental method for determining fusion characteristics of coal ash for spraying |
| CN104330435A (en) * | 2014-10-30 | 2015-02-04 | 天津钢铁集团有限公司 | Measurement method of assimilation characteristics of iron ore powder |
| CN104374671A (en) * | 2014-11-10 | 2015-02-25 | 首钢总公司 | Method for detecting fluidity of furnace slag in heating process |
| CN104865342A (en) * | 2015-04-15 | 2015-08-26 | 北京科技大学 | Visualization miniature method and apparatus for testing mineral temperature reconstruction |
| CN104458789B (en) * | 2014-11-14 | 2017-02-01 | 武汉钢铁(集团)公司 | Method for detecting high temperature performance of iron ore powder |
| CN106769661A (en) * | 2016-11-18 | 2017-05-31 | 内蒙古包钢钢联股份有限公司 | The evaluation method of iron ore powder Liquid phase flowability |
| CN107561115A (en) * | 2016-06-30 | 2018-01-09 | 鞍钢股份有限公司 | A kind of detection method of sintering quick lime pyroreaction characteristic |
| CN109752261A (en) * | 2017-11-02 | 2019-05-14 | 上海梅山钢铁股份有限公司 | A method of detection iron ore powder in sintering process binder strength |
| CN112782214A (en) * | 2020-11-25 | 2021-05-11 | 中南大学 | Method for measuring liquid phase generation characteristics in iron ore sintering process |
| CN113820343A (en) * | 2021-08-18 | 2021-12-21 | 首钢集团有限公司 | Method for detecting high-temperature liquid phase generation proportion of sinter |
| CN114486993A (en) * | 2021-12-28 | 2022-05-13 | 武钢集团昆明钢铁股份有限公司 | Method for detecting assimilation temperature of iron ore powder |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58123837A (en) * | 1982-01-18 | 1983-07-23 | Nisshin Steel Co Ltd | Manufacture of sintered iron ore having improved reduction powdering property at low temperature |
| CN101299035A (en) * | 2008-06-12 | 2008-11-05 | 首钢总公司 | Iron ore automatic control static state low temperature reduction degradation test device and test method |
| CN101713022A (en) * | 2009-12-16 | 2010-05-26 | 北京中电华方科技有限公司 | Ore proportioning and sintering method |
-
2010
- 2010-12-13 CN CN2010106024177A patent/CN102023176B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58123837A (en) * | 1982-01-18 | 1983-07-23 | Nisshin Steel Co Ltd | Manufacture of sintered iron ore having improved reduction powdering property at low temperature |
| CN101299035A (en) * | 2008-06-12 | 2008-11-05 | 首钢总公司 | Iron ore automatic control static state low temperature reduction degradation test device and test method |
| CN101713022A (en) * | 2009-12-16 | 2010-05-26 | 北京中电华方科技有限公司 | Ore proportioning and sintering method |
Non-Patent Citations (1)
| Title |
|---|
| 《2010年全国炼铁生产技术会议暨炼铁学术年会文集（上）》 20090526 裴元东等 国外铁矿粉烧结理论与技术的进展 192-199 1-4 , * |
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| CN102809579A (en) * | 2012-07-23 | 2012-12-05 | 辽宁科技大学 | Method for detecting high-temperature mineralization characteristic of sintered iron ores |
| CN103235000A (en) * | 2013-04-18 | 2013-08-07 | 首钢总公司 | Experimental method for determining fusion characteristics of coal ash for spraying |
| CN104330435A (en) * | 2014-10-30 | 2015-02-04 | 天津钢铁集团有限公司 | Measurement method of assimilation characteristics of iron ore powder |
| CN104374671A (en) * | 2014-11-10 | 2015-02-25 | 首钢总公司 | Method for detecting fluidity of furnace slag in heating process |
| CN104458789B (en) * | 2014-11-14 | 2017-02-01 | 武汉钢铁(集团)公司 | Method for detecting high temperature performance of iron ore powder |
| CN104865342A (en) * | 2015-04-15 | 2015-08-26 | 北京科技大学 | Visualization miniature method and apparatus for testing mineral temperature reconstruction |
| CN107561115A (en) * | 2016-06-30 | 2018-01-09 | 鞍钢股份有限公司 | A kind of detection method of sintering quick lime pyroreaction characteristic |
| CN106769661A (en) * | 2016-11-18 | 2017-05-31 | 内蒙古包钢钢联股份有限公司 | The evaluation method of iron ore powder Liquid phase flowability |
| CN109752261A (en) * | 2017-11-02 | 2019-05-14 | 上海梅山钢铁股份有限公司 | A method of detection iron ore powder in sintering process binder strength |
| CN109752261B (en) * | 2017-11-02 | 2021-05-07 | 上海梅山钢铁股份有限公司 | Method for detecting strength of iron ore powder binding phase in sintering process |
| CN112782214A (en) * | 2020-11-25 | 2021-05-11 | 中南大学 | Method for measuring liquid phase generation characteristics in iron ore sintering process |
| CN113820343A (en) * | 2021-08-18 | 2021-12-21 | 首钢集团有限公司 | Method for detecting high-temperature liquid phase generation proportion of sinter |
| CN114486993A (en) * | 2021-12-28 | 2022-05-13 | 武钢集团昆明钢铁股份有限公司 | Method for detecting assimilation temperature of iron ore powder |
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Address after: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Patentee after: Shougang Group Co. Ltd. Address before: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Patentee before: Capital Iron & Steel General Company |