CN104894312A - Method for measuring pile angles of coke and burden in blast furnace as well as pile angles of coke and burden - Google Patents
Method for measuring pile angles of coke and burden in blast furnace as well as pile angles of coke and burden Download PDFInfo
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Abstract
The invention relates to a method for measuring the pile angles of coke and burden in a blast furnace as well as the pile angles of the coke and the burden. The method comprises the following steps: I, the size fraction distribution of blowing-in coke in the blast furnace is performed according to the entrance requirement; II, the blowing-in material pile ratio of the blast furnace is set according to the furnace entering requirement; III, the angle and cycle number of the last 1-2 batches of blowing-in materials loading into the blast furnace are set according to the furnace entering requirement; IV, sounding rods of the last 3 tanks of materials loading into the blast furnace is set as required; V, the charge level shape data after the final 4 tanks of blowing-in materials are loaded into the blast furnace are determined, and the data comprise the platform width, the slope length, the funnel depth and the funnel diameter after the 74th coke feeding, the platform width, the slope length, the slope angle, the funnel depth and the funnel diameter after the 74th ore feeding as well as the platform width, the slope length and the slope angle after the 75th coke feeding and ore feeding. After the blast furnace is put into production, the pile angles of the coke and the burden in the blast furnace can be measured, the pile angle of the coke ranges from 34.0-37.0 degrees, and the pile angle of the burden ranges from 33.0-36.0 degrees.
Description
Technical field
The present invention relates to a kind of method and the angle of rest (repose) thereof of measuring coke and furnace charge angle of rest (repose) in blast furnace.
Background technology
When blast furnace is normally produced, in the process of adjustment charging system, need to determine that in blast furnace, coke and furnace charge angle of rest (repose) are as adjustment foundation.In blast furnace, coke and furnace charge angle of rest (repose) can determine the shape of charge level in stove, the degree of depth of Ji Lunei center funnel and size.Need to provide foundation more reliably to the adjustment of top charging system.The method of coke and furnace charge angle of rest (repose) in existing measurement blast furnace, only before blow-on is gone into operation, enter charge level manual measurement in stove when being also in cold conditions in stove, just can measure the angle of coke and furnace charge angle of rest (repose) in blast furnace, in this, as the foundation of production top charging system adjustment in the future.But blast furnace, once after going into operation, is just measured coke and furnace charge angle of rest (repose) having no chance to enter in stove, thus can not be adjusted shape of charge level accordingly, reach the object of Gas Flow in control stove.
Summary of the invention
In order to overcome the above-mentioned deficiency of the method for coke and furnace charge angle of rest (repose) in existing measurement blast furnace, after the invention provides the operation of a kind of blast furnace, measure the method for coke and furnace charge angle of rest (repose) in blast furnace.
Another object of the present invention is to provide the angle of rest (repose) of coke and the angle of rest (repose) of furnace charge in a kind of blast furnace.
The method of coke and furnace charge angle of rest (repose) in this measurement blast furnace, that it is measured is 4000 ~ 5000m
3coke and furnace charge angle of rest (repose) in level blast furnace, it comprises following step successively:
I blast furnace opening feeding density carbon granule level, according to entering stove requirement distribution;
II blast furnace opening stockpile proportion, according to entering stove requirement proportioning;
III blast furnace fills last 1 ~ 2 batch of blow-on material angle and the number of turns, according to entering stove requirement setting:
The stock rod that IV blast furnace fills last 3 tank material is arranged on request:
The shape of charge level data that V blast furnace measures after filling last 4 tank blow-on material;
Northeastward after 74th coke charge charcoal blowing, northwest are to the berm width of, southwestward and southeastern direction and slope length; Direction, due east, Due South to, positive west to the ramp angles of direct north, the funnel degree of depth and Funnel diameter; The ramp angles of southwestward and northeastward and the funnel degree of depth and Funnel diameter;
Northeastward after 74th batch of ore blowing, northwest are to the berm width of, southwestward and southeastern direction and slope length; Direction, due east, Due South to, positive west to the ramp angles and the funnel degree of depth with direct north are and Funnel diameter;
After 75th coke charge charcoal blowing, southeastern direction, southwestward, northwest are to the berm width and slope length with northeastward; Due east, due south, Zheng Xi and positive northern berm width and ramp angles; The berm width in due east after the 75th batch of ore blowing, due south, Zheng Xi and positive north and slope length and ramp angles;
Coke angle of rest (repose) and furnace charge angle of rest (repose) is tried to achieve by above-mentioned steps.
The method of coke and furnace charge angle of rest (repose) in above-mentioned measurement blast furnace, its steps characteristic is:
iblast furnace opening feeding density carbon granule level, according to entering stove requirement distribution; Wherein the unit of grade is mm, and corresponding ratio is per-cent %,
Grade < 15, ratio 0.3-1.0; Grade 15-25, ratio 0.3-1.0; Grade 25-40, ratio 5.0-8.0; Grade 40-50, ratio 23.0-26.0; True grade 50-75, ratio 52.0-56.0; Grade > 75, ratio 11.0-13.0;
iIblast furnace opening stockpile proportion, according to entering stove requirement proportioning; Wherein the bulk density unit of furnace charge is t/m
3, proportioning is per-cent %, and the unit of counterweight is t; Furnace charge is agglomerate, bulk density 1.80-1.95, proportioning 85.0 ± 1.0%; Furnace charge is pelletizing, bulk density 2.0-2.2, and both proportioning 15.0% ± 1.0(sum is 100%); Furnace charge is manganese ore, bulk density 1.8-1.9, counterweight 1.96 ± 0.5t; Furnace charge is Wingdale, bulk density 1.2-1.3; Furnace charge is silica, bulk density 1.4-1.5, counterweight 3.1 ± 0.5t; Furnace charge is coke, bulk density 0.50-0.52;
iIIblast furnace fills last 1 ~ 2 batch of blow-on material angle and the number of turns, is set as follows according to entering stove requirement:
The angle of the 74th batch of ore is 40 ° successively, 38 °, 36 °, 34 °, 32 °, 30 °, 28 °;
The number of turns of the 74th batch of ore is 2,2,2,2,2,2,2 successively;
The weight of the 74th batch of ore is 58.33-60.0 t;
(angle and the number of turns are established toward production practice of blast furnace experience and furnace top equipment performance according to this.）
The angle of the 74th coke charge charcoal is 40 successively
°,38
°,35.5
°,33
°,30
°,27
°;
The number of turns of the 74th coke charge charcoal is 3,3,3,2,2,2 successively;
The weight of the 74th coke charge charcoal is 25.0 ± 0.5
t;
(angle and the number of turns are established toward production practice of blast furnace experience and furnace top equipment performance according to this.）
iVblast furnace fills the stock rod of last 3 tank material by requirement setting as follows:
Before 74th coke charge charcoal cloth, (being also after ore blowing) stock rod 1 is 2.81 ± 0.3 m, and stock rod 2 is 2.63 ± 0.3 m, and stock rod 3 is 2.56 ± 0.3 m;
After 74th coke charge charcoal blowing, stock rod 1 is 2.04 ± 0.3 m, and stock rod 2 is 2.04 ± 0.3 m, and stock rod 3 is 1.93 ± 0.3 m;
After 75th batch of ore blowing, stock rod 1 is 1.82 ± 0.3 m, and stock rod 2 is 1.74 ± 0.3 m, and stock rod 3 is 1.67 ± 0.3 m;
After 76th coke charge charcoal blowing, stock rod 1 is 1.28 ± 0.3 m, and stock rod 2 is 1.27 ± 0.3m, and stock rod 3 is 1.12 ± 0.3 m;
Stock rod 1, stock rod 2 are distances intermarginal on furnace roof 1,2, No. 3 charge levels that stock rod detects to throat armour with stock rod 3 respectively.
vthe shape of charge level data that blast furnace measures after filling last 4 tank blow-on material are as follows;
After 74th coke charge charcoal blowing
Northeastward berm width is 1.8 ± 0.3m, and slope length is 4.3 ± 0.5m;
Northwest is 1.9 ± 0.3m to berm width, and slope length is 4.3 ± 0.5m;
Southwestward berm width is 1.8 ± 0.3m, and slope length is 4.3 ± 0.5m;
Southeastern direction berm width is 1.8 ± 0.3m, and slope length is 4.2 ± 0.5m;
(slope length takes tape measure artificial actual data recorded in stove.For the ordinary skill in the art.）
Direction, due east ramp angles is 35.4 ± 0.3 °, and the funnel degree of depth is 2.63 ± 0.5m, and Funnel diameter is 3.70 ± 0.5m;
Due South is 37.2 ± 0.3 ° to ramp angles, and the funnel degree of depth is
2.75± 0.5m, Funnel diameter is 3.62 ± 0.5m;
Positive west is 37.4 ± 0.3 ° to ramp angles, and the funnel degree of depth is 2.76 ± 0.5m, and Funnel diameter is 3.61 ± 0.5m;
Direct north ramp angles is 36.4 ± 0.3 °, and the funnel degree of depth is 2.70 ± 0.5m, and Funnel diameter is 3.66 ± 0.5m;
Southwestward ramp angles is 38.0 ± 0.3 °, and the funnel degree of depth is 2.80 ± 0.5m, and Funnel diameter is 3.59 ± 0.5m;
Northeastward ramp angles is 37.9 ± 0.3 °, and the funnel degree of depth is 2.79 ± 0.5m, and Funnel diameter is 3.59 ± 0.5m;
(ramp angles, the funnel degree of depth, Funnel diameter take tape measure artificial actual data recorded in stove.For the ordinary skill in the art.）
After 74th batch of ore blowing
Northeastward berm width is 1.3 ± 0.3m, and slope length is 4.55 ± 0.5m;
Northwest is 1.3 ± 0.3m to berm width, and slope length is 4.67 ± 0.5m;
Southwestward berm width is 1.3 ± 0.3m, and slope length is 4.69 ± 0.5m;
Southeastern direction berm width is 1.4 ± 0.3m, and slope length is 4.59 ± 0.5m;
Direction, due east ramp angles is 34 ± 0.3 °, and the funnel degree of depth is 2.54 ± 0.5m, and Funnel diameter is 3.77 ± 0.5m;
Due South is 33.8 ± 0.3 ° to ramp angles, and the funnel degree of depth is 2.53 ± 0.5m, and Funnel diameter is 3.78 ± 0.5m;
Positive west is 33.8 ± 0.3 ° to ramp angles, and the funnel degree of depth is 2.53 ± 0.5m, and Funnel diameter is 3.78 ± 0.5m;
Direct north ramp angles is 32.68 ± 0.3 °, and the funnel degree of depth is 2.46 ± 0.5m, and Funnel diameter is 3.83 ± 0.5m;
After 75th coke charge charcoal blowing
Southeastern direction berm width is 1.4 ± 0.3m, and slope length is 4.3 ± 0.5m;
Southwestward berm width is 1.7 ± 0.3m, and slope length is 4.0 ± 0.5m;
Northwest is 1.77 ± 0.3m to berm width, and slope length is 4.3 ± 0.5m;
Northeastward berm width is 1.63 ± 0.3m, and slope length is 4.3 ± 0.5m;
Due east berm width is 1610 ± 0.3mm; Ramp angles is 35.8 ± 0.3 °;
Due south berm width is 1650 ± 0.3mm; Ramp angles is 35.7 ± 0.3 °;
Just western berm width is 1715 ± 0.3mm; Ramp angles is 37.3 ± 0.3 °;
Positive northern berm width is 1650 ± 0.5mm; Ramp angles is 36.7 ± 0.3 °;
After 75th batch of ore blowing
Due east berm width is 1.2 ± 0.3m, and slope length is 4.93 ± 0.5m, and ramp angles is 35.8 ± 0.3 °;
Due south berm width is 1.15 ± 0.3m, and slope length is 5.08 ± 0.5m, and ramp angles is 33.9 ± 0.3 °;
Just western berm width is 0.9 ± 0.3m, and slope length is 4.78 ± 0.5m, and ramp angles is 33.7 ± 0.3 °;
Positive northern berm width is 0.8 ± 0.3m, and slope length is 5.13 ± 0.5m, and ramp angles is 35.1 ± 0.3 °;
Coke angle of rest (repose) and furnace charge angle of rest (repose) is tried to achieve by above-mentioned steps.
(by coke angle of rest (repose) and the furnace charge angle of rest (repose) of above-mentioned five steps, be take inclinometer artificial actual data recorded in stove.According to maximum, that scope that is minimum value obtains coke and furnace charge angle of rest (repose).For the ordinary skill in the art.）
Coke and furnace charge angle of rest (repose) in this blast furnace, is characterized in that: coke angle of rest (repose) is 34.0 ~ 37.0 °, and furnace charge angle of rest (repose) is 33.0 ~ 36.0 °.
Beneficial effect of the present invention
Main of the present invention is by last 1 ~ 3 batch of dress blow-on material, enters the angle of rest (repose) measuring coke and furnace charge in blast furnace in stove with horizontal protractor exactly, instructs blast furnace opening to feed the adjustment of angle and gear, formed rational shape of charge level with this.By finding the angle of rest (repose) of coke and furnace charge in blast furnace, thus adjusting the operating parameters of top charging system targetedly, realizing the accurate adjustment of charging system, so that large blast furnace realizes stably manufactured.
By actual measurement large blast furnace (4000 ~ 5000m
3level) blow-on fills last 3 batch of material platforms and funnel data, and obtain, in blast furnace, coke angle of rest (repose) is 34.0 ° ~ 37.0 °, and furnace charge angle of rest (repose) is 33.0 ° ~ 36.0 °, as the foundation of producing adjustment charging system in the future.Instruct the establishment of large blast furnace charging system with this, promote the direct motion steady in a long-term of blast furnace and the improvement of technico-economical comparison.
Embodiment
In detail clearly the specific embodiment of the present invention is described below by embodiment, but the present invention is not limited to following embodiment, the following examples are not limitations of the present invention.
Embodiment
That the present embodiment is measured is 5000m
3coke and furnace charge angle of rest (repose) in level blast furnace
In blast furnace, the size of coke and furnace charge angle of rest (repose) is subject to the impact of following factor:
1), coke grain class distribution; 2), blow-on stockpile proportion and proportioning;
3) last 1 ~ 3 batch of blow-on material cloth angle and number of turns setting, is filled; 4), angle of rest (repose) metering system.
According to entering stove requirement, blast furnace opening feeding density charcoal grain class distribution is in table 1.
Table 1
| Grade, mm | ＜15 | 15-25 | 25-40 | 40-50 | 50-75 | ＞75 |
| Ratio, % | 0.3-1.0 | 0.3-1.0 | 5.0-8.0 | 23.0-26.0 | 52.0-56.0 | 11.0-13.0 |
According to entering stove requirement, blast furnace opening stockpile proportion and proportioning are in table 2.
Table 2
| Furnace charge | Coke | Sintering | Pelletizing | Manganese ore | Wingdale | Silica |
| Bulk density, t/m 3 | 0.50-0.52 | 1.80-1.95 | 2.0-2.2 | 1.8-1.9 | 1.2-1.3 | 1.4-1.5 |
| Proportioning | 85.0% | 15.0% | 1.96t | 3.1t |
According to entering stove requirement, blast furnace fills last 1 ~ 2 batch of blow-on material angle and the number of turns sets in table 3.
Table 3
| 74th batch of ore angle, ° | 40 | 38 | 36 | 34 | 32 | 30 | 28 | Batch weight, t |
| The 74th batch of ore number of turns | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 58.33 |
| 74th coke charge charcoal angle, ° | 40 | 38 | 35.5 | 33 | 30 | 27 | Amount to | Batch weight, t |
| The 74th coke charge charcoal number of turns | 3 | 3 | 3 | 2 | 2 | 2 | 15 | 25.0 |
The present embodiment No. 6 blast furnaces fill the stockline situation of last 3 tank material in table 4.
| Tank number | Stock rod 1, m | Stock rod 2, m | Stock rod 3, m |
| Before 74th coke charge charcoal cloth | 2.81 | 2.63 | 2.56 |
| After 74th coke charge charcoal blowing | 2.04 | 2.04 | 1.93 |
| After 75th batch of ore blowing | 1.82 | 1.74 | 1.67 |
| After 76th coke charge charcoal blowing | 1.28 | 1.27 | 1.12 |
The shape of charge level data that blast furnace measures after filling last 4 tank blow-on material are in table 5.
The data of table 5 are actual measurement data.Be the table 1-4 above basis on just can obtain.
Coke angle of rest (repose) is 34.0 ~ 37.0 °, and furnace charge angle of rest (repose) is 33.0 ~ 36.0 °, draws by concluding in table 5, sees the word (the heap angular region according to maximum, minimum value are formed) that italic describes.The result obtained can not become, can not.The heap angle value of the coke utilizing the present invention to obtain and furnace charge, can be used as the foundation adjusting cloth angle and gear in daily blast furnace operating, prevent the excessive generation of furnace charge angle of rest (repose) in stove from flow phenomenon, cause shape of charge level in stove unstable, thus cause Gas Flow in stove unstable.
As seen from Table 5, fill last 3 batch of material platforms and funnel data by actual measurement blow-on, obtaining coke angle of rest (repose) in blast furnace is 34.0 ~ 37.0 °, and furnace charge angle of rest (repose) is 33.0 ~ 36.0 °, can be used as the foundation of in the future producing adjustment charging system.And under the effect of above-mentioned coke and furnace charge angle of rest (repose), it is better that blast furnace fills the shape of charge level after last 1 tank material (the 76th coke charge charcoal) blowing, edge platform width 1750mm, center funnel degree of depth 2500mm, stockline 1.20m.(reality is measured in stove.Last three batches refer to the 74th, 75,76 batch.）
Table 5
Claims (3)
1. measure a method for coke and furnace charge angle of rest (repose) in blast furnace, that it is measured is 4000 ~ 5000m
3coke and furnace charge angle of rest (repose) in level blast furnace, it comprises following step successively:
I blast furnace opening feeding density carbon granule level, according to entering stove requirement distribution;
II blast furnace opening stockpile proportion, according to entering stove requirement proportioning;
III blast furnace fills last 1 ~ 2 batch of blow-on material angle and the number of turns, according to entering stove requirement setting:
The stock rod that IV blast furnace fills last 3 tank material is arranged on request:
The shape of charge level data that V blast furnace measures after filling last 4 tank blow-on material;
Northeastward after 74th coke charge charcoal blowing, northwest are to the berm width of, southwestward and southeastern direction and slope length; Direction, due east, Due South to, positive west to the ramp angles of direct north, the funnel degree of depth and Funnel diameter; The ramp angles of southwestward and northeastward and the funnel degree of depth and Funnel diameter;
Northeastward after 74th batch of ore blowing, northwest are to the berm width of, southwestward and southeastern direction and slope length; Direction, due east, Due South to, positive west to the ramp angles and the funnel degree of depth with direct north are and Funnel diameter;
After 75th coke charge charcoal blowing, southeastern direction, southwestward, northwest are to the berm width and slope length with northeastward; Due east, due south, Zheng Xi and positive northern berm width and ramp angles; The berm width in due east after the 75th batch of ore blowing, due south, Zheng Xi and positive north and slope length and ramp angles;
Coke angle of rest (repose) and furnace charge angle of rest (repose) is tried to achieve by above-mentioned steps.
2. the method for coke and furnace charge angle of rest (repose) in measurement blast furnace according to claim 1, its steps characteristic is:
iblast furnace opening feeding density carbon granule level, according to entering stove requirement distribution; Wherein the unit of grade is mm, and corresponding ratio is per-cent %,
Grade < 15, ratio 0.3-1.0; Grade 15-25, ratio 0.3-1.0; Grade 25-40, ratio 5.0-8.0; Grade 40-50, ratio 23.0-26.0; True grade 50-75, ratio 52.0-56.0; Grade > 75, ratio 11.0-13.0;
iIblast furnace opening stockpile proportion, according to entering stove requirement proportioning; Wherein the bulk density unit of furnace charge is t/m
3, proportioning is per-cent %, and the unit of counterweight is t; Furnace charge is agglomerate, bulk density 1.80-1.95, proportioning 85.0 ± 1.0%; Furnace charge is pelletizing, bulk density 2.0-2.2, and both proportioning 15.0% ± 1.0(sum is 100%); Furnace charge is manganese ore, bulk density 1.8-1.9, counterweight 1.96 ± 0.5t; Furnace charge is Wingdale, bulk density 1.2-1.3; Furnace charge is silica, bulk density 1.4-1.5, counterweight 3.1 ± 0.5t; Furnace charge is coke, bulk density 0.50-0.52;
iIIblast furnace fills last 1 ~ 2 batch of blow-on material angle and the number of turns, is set as follows according to entering stove requirement:
The angle of the 74th batch of ore is 40 ° successively, 38 °, 36 °, 34 °, 32 °, 30 °, 28 °;
The number of turns of the 74th batch of ore is 2,2,2,2,2,2,2 successively;
The weight of the 74th batch of ore is 58.33-60.0 t;
The angle of the 74th coke charge charcoal is 40 successively
°,38
°,35.5
°,33
°,30
°,27
°;
The number of turns of the 74th coke charge charcoal is 3,3,3,2,2,2 successively;
The weight of the 74th coke charge charcoal is 25.0 ± 0.5t
;
iVblast furnace fills the stock rod of last 3 tank material by requirement setting as follows:
Before 74th coke charge charcoal cloth, stock rod 1 is 2.81 ± 0.3 m, and stock rod 2 is 2.63 ± 0.3 m, and stock rod 3 is 2.56 ± 0.3 m;
After 74th coke charge charcoal blowing, stock rod 1 is 2.04 ± 0.3 m, and stock rod 2 is 2.04 ± 0.3 m, and stock rod 3 is 1.93 ± 0.3 m;
After 75th batch of ore blowing, stock rod 1 is 1.82 ± 0.3 m, and stock rod 2 is 1.74 ± 0.3 m, and stock rod 3 is 1.67 ± 0.3 m;
After 76th coke charge charcoal blowing, stock rod 1 is 1.28 ± 0.3 m, and stock rod 2 is 1.27 ± 0.3m, and stock rod 3 is 1.12 ± 0.3 m;
Stock rod 1, stock rod 2 are distances intermarginal on furnace roof 1,2, No. 3 charge levels that stock rod detects to throat armour with stock rod 3 respectively;
vthe shape of charge level data that blast furnace measures after filling last 4 tank blow-on material are as follows;
After 74th coke charge charcoal blowing
Northeastward berm width is 1.8 ± 0.3m, and slope length is 4.3 ± 0.5m;
Northwest is 1.9 ± 0.3m to berm width, and slope length is 4.3 ± 0.5m;
Southwestward berm width is 1.8 ± 0.3m, and slope length is 4.3 ± 0.5m;
Southeastern direction berm width is 1.8 ± 0.3m, and slope length is 4.2 ± 0.5m;
Direction, due east ramp angles is 35.4 ± 0.3 °, and the funnel degree of depth is 2.63 ± 0.5m, and Funnel diameter is 3.70 ± 0.5m;
Due South is 37.2 ± 0.3 ° to ramp angles, and the funnel degree of depth is
2.75± 0.5m, Funnel diameter is 3.62 ± 0.5m;
Positive west is 37.4 ± 0.3 ° to ramp angles, and the funnel degree of depth is 2.76 ± 0.5m, and Funnel diameter is 3.61 ± 0.5m;
Direct north ramp angles is 36.4 ± 0.3 °, and the funnel degree of depth is 2.70 ± 0.5m, and Funnel diameter is 3.66 ± 0.5m;
Southwestward ramp angles is 38.0 ± 0.3 °, and the funnel degree of depth is 2.80 ± 0.5m, and Funnel diameter is 3.59 ± 0.5m;
Northeastward ramp angles is 37.9 ± 0.3 °, and the funnel degree of depth is 2.79 ± 0.5m, and Funnel diameter is 3.59 ± 0.5m;
After 74th batch of ore blowing
Northeastward berm width is 1.3 ± 0.3m, and slope length is 4.55 ± 0.5m;
Northwest is 1.3 ± 0.3m to berm width, and slope length is 4.67 ± 0.5m;
Southwestward berm width is 1.3 ± 0.3m, and slope length is 4.69 ± 0.5m;
Southeastern direction berm width is 1.4 ± 0.3m, and slope length is 4.59 ± 0.5m;
Direction, due east ramp angles is 34 ± 0.3 °, and the funnel degree of depth is 2.54 ± 0.5m, and Funnel diameter is 3.77 ± 0.5m;
Due South is 33.8 ± 0.3 ° to ramp angles, and the funnel degree of depth is 2.53 ± 0.5m, and Funnel diameter is 3.78 ± 0.5m;
Positive west is 33.8 ± 0.3 ° to ramp angles, and the funnel degree of depth is 2.53 ± 0.5m, and Funnel diameter is 3.78 ± 0.5m;
Direct north ramp angles is 32.68 ± 0.3 °, and the funnel degree of depth is 2.46 ± 0.5m, and Funnel diameter is 3.83 ± 0.5m;
After 75th coke charge charcoal blowing
Southeastern direction berm width is 1.4 ± 0.3m, and slope length is 4.3 ± 0.5m;
Southwestward berm width is 1.7 ± 0.3m, and slope length is 4.0 ± 0.5m;
Northwest is 1.77 ± 0.3m to berm width, and slope length is 4.3 ± 0.5m;
Northeastward berm width is 1.63 ± 0.3m, and slope length is 4.3 ± 0.5m;
Due east berm width is 1610 ± 300mm; Ramp angles is 35.8 ± 0.3 °;
Due south berm width is 1650 ± 300mm; Ramp angles is 35.7 ± 0.3 °;
Just western berm width is 1715 ± 300mm; Ramp angles is 37.3 ± 0.3 °;
Positive northern berm width is 1650 ± 300mm; Ramp angles is 36.7 ± 0.3 °;
After 75th batch of ore blowing
Due east berm width is 1.2 ± 0.3m, and slope length is 4.93 ± 0.5m, and ramp angles is 35.8 ± 0.3 °;
Due south berm width is 1.15 ± 0.3m, and slope length is 5.08 ± 0.5m, and ramp angles is 33.9 ± 0.3 °;
Just western berm width is 0.9 ± 0.3m, and slope length is 4.78 ± 0.5m, and ramp angles is 33.7 ± 0.3 °;
Positive northern berm width is 0.8 ± 0.3m, and slope length is 5.13 ± 0.5m, and ramp angles is 35.1 ± 0.3 °.
3. coke and a furnace charge angle of rest (repose) in blast furnace, it is characterized in that: coke angle of rest (repose) is 34.0 ~ 37.0 °, furnace charge angle of rest (repose) is 33.0 ~ 36.0 °.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3787238B2 (en) * | 1998-01-23 | 2006-06-21 | 新日本製鐵株式会社 | Charging method into the center of the blast furnace |
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| CN104694680A (en) * | 2015-03-18 | 2015-06-10 | 江苏省沙钢钢铁研究院有限公司 | Control method for radial distribution of blast furnace burden layer structure |
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