CN102392127A - Pre-humidification method of iron ore powder - Google Patents
Pre-humidification method of iron ore powder Download PDFInfo
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- CN102392127A CN102392127A CN2011103397832A CN201110339783A CN102392127A CN 102392127 A CN102392127 A CN 102392127A CN 2011103397832 A CN2011103397832 A CN 2011103397832A CN 201110339783 A CN201110339783 A CN 201110339783A CN 102392127 A CN102392127 A CN 102392127A
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Abstract
The invention provides a pre-humidification method of iron ore powder, comprising the steps of: obtaining the water distribution quantity difference of the iron ore powder through obtaining appropriate pelletizing water distribution quantity of the iron ore powder and computing the water absorption degree of the iron ore powder in the mixed pelletizing process; judging whether the iron ore powder needs pre-humidification according to the water distribution quantity difference; if so, controlling the water distribution time according to the water distribution quantity difference and water distribution flow set in the pre-humidification process; and pre-humidifying the iron ore powder before the mixing pelletizing to solve the problem that the water distribution quantity for the iron ore powder of different types is insufficient in the mixed pelletizing process on a fixed sintering production line, so that the sintering mixture globules of the iron ore powder of different types after the mixed pelletizing can better satisfy the requirements of appropriate strength and granularity. The method can be used as an automatic control scheme for water distribution adjustment in ore sintering by utilizing computer programming to realize computer automatic computation and automatic control.
Description
Technical field
The invention belongs to the metallurgical engineering technical field, especially be difficult to the problem that the ball effect is made in accurately control influence, propose a kind of preparatory moist curing method of powdered iron ore to water distribution quantity in the mixed pelletizing process.
Background technology
In the ferrous metallurgy field; Need earlier raw materials for sintering such as powdered iron ore, coke, flux to be added water distribution mixed pelletizing in the cylindrical mixer; Acquisition has the sinter mixture bead of certain particle size, and then the sinter mixture bead is obtained the required agglomerate of blast furnace ironmaking through sintering processes.In this mixed pelletizing process, water distribution quantity is to the ball behavior of making of compound, and the size-grade distribution of final sinter mixture bead has material impact.Therefore, the importance of raw materials for sintering moisture controlled is self-evident, and suitable water distribution quantity can guarantee that the sinter mixture bead reaches proper intensity and globule size, thus water saving to the full extent with reduce sintering required join carbon.
Continuous development along with modern steel industry; Whole world iron ore price goes up; Iron and steel enterprise is to the but sustainable growth of demand of iron ore resource, so iron and steel enterprise has all used various ores and ferrous material, dust waste material etc. in the sintering process through enlarging raw material sources workout cost problem.Therefore, the raw material present situation of present domestic most iron and steel enterprises is that iron ore is of a great variety, the composition fluctuation is big.Yet; Because the sintered production line of most iron and steel enterprises is fixed; Water distribution quantity in the mixed pelletizing process is changeless, and the water-absorbent of different sorts powdered iron ore and water-retaining capacity have very big-difference, and it is made the suitable water distribution quantity of ball and has nothing in common with each other; Therefore the problem of sinter mixture water distribution deficiency, sinter mixture bead intensity difference often occurs, bring very big difficulty to sintering process.
Summary of the invention
To the problems referred to above, the object of the present invention is to provide a kind of preparatory moist curing method of powdered iron ore, in order to remedy fixedly sintered production line to the insufficient problem of different sorts powdered iron ore water distribution quantity.
Automatic control system for sintered mixture moisture; This system is through measuring the wet volume capacity of sinter mixture; Predict the suitable water cut of sinter mixture according to wet volume capacity; And go to regulate and control the amount of water in the pelletization according to the actual water cut of suitable water cut predictor and online detection, make the water cut of sinter mixture finally be stabilized in suitable value.
For realizing above-mentioned purpose, the present invention has adopted following technique means:
The preparatory moist curing method of powdered iron ore is characterized in that, comprises the steps:
A) the distributed water flow F that sets according to the mixed pelletizing process
1With the water distribution time T
1, judge whether powdered iron ore need carry out preparatory moist curing; Be specially:
A1) obtain the wet volume capacity M of powdered iron ore
CWith make the suitable water distribution quantity M of ball
W, calculate the absorption of water M of powdered iron ore in the mixed pelletizing process
T:
M
T=M
C[1-exp(-k·A
1·ρ·T
1·B
1/m
1)]；
Wherein, ρ representes the density of water, m
1The quality of powdered iron ore in the expression mixed pelletizing process; A
1The equivalence suction area of powdered iron ore in the expression mixed pelletizing process, A
1=(F
1S
1)/v
1, v
1Water distribution exit velocity in the expression mixed pelletizing process, S
1Powdered iron ore volume and the used cylindrical mixer volumetrical of mixed pelletizing process ratio in the expression mixed pelletizing process; K representes the suction mass transfer coefficient of powdered iron ore, B
1For making ball process correction factor, span be (0 ~ 5];
A2) the water distribution quantity difference Δ M=M of calculating powdered iron ore
W-M
T, if Δ M≤0, then powdered iron ore need not to carry out preparatory moist curing; If Δ M>0, then powdered iron ore need be carried out preparatory moist curing, continues performing step B);
B) powdered iron ore is carried out preparatory moist curing; Be specially:
B1) the distributed water flow F of the preparatory moist curing of setting
2, and according to distributed water flow F
2Confirm the water distribution time T of preparatory wet processes
2:
T
2=[-m
2·ln(1-ΔM/M
C)]/(k·A
2·ρ·B
2)；
Wherein, m
2The quality of representing powdered iron ore in the preparatory wet processes; A
2The equivalence suction area of representing powdered iron ore in the preparatory wet processes, A
2=F
2S
2/ v
2, v
2The water distribution exit velocity of representing preparatory wet processes, S
2Represent powdered iron ore volume and the preparatory used cylindrical mixer volumetrical of wet processes ratio in the preparatory wet processes; B
2Represent preparatory wet processes correction factor, span be (0 ~ 5];
B2) before mixed pelletizing, powdered iron ore is added in the used cylindrical mixer of preparatory wet processes, press distributed water flow F
2With the water distribution time T
2Water distribution mixes, and carries out preparatory moist curing.
Than prior art, the present invention has following beneficial effect:
1, through preparatory moist curing method of the present invention different types of powdered iron ore is carried out preparatory moist curing; Can remedy fixedly sintered production line to the insufficient problem of different sorts powdered iron ore water distribution quantity; Make different types of powdered iron ore through after the preparatory moist curing, carry out mixed pelletizing with the fixed sintered production line and handle the requirement that resulting sinter mixture bead can better satisfy suitable intensity and globule size.
2, the parameter that relates in the inventive method can write down and use repeatedly once obtaining, and puts things right once and for all, and is very convenient in the use in later stage.
3, preparatory moist curing method of the present invention can utilize computer programming to realize that computingmachine calculates automatically, control automatically fully, thereby a kind of robotization control scheme that the sintering mineral aggregate water distribution of conduct is regulated is applied in the sintering processes.
Description of drawings
Fig. 1 is the FB(flow block) of the preparatory moist curing method of powdered iron ore of the present invention.
Embodiment
Adopt the fixed sintered production line that the different sorts powdered iron ore is carried out mixed pelletizing to some iron and steel enterprises and handle the problem that sinter mixture water distribution deficiency, sinter mixture bead intensity difference often occur; Can adopt preparatory wetting scheme of the present invention to before mixed pelletizing, powdered iron ore being carried out preparatory moist curing; It is not enough to remedy the water distribution quantity of powdered iron ore in mixed pelletizing is handled, thereby under the situation of not changing sintered production line, addresses the above problem.
Preparatory for ease wet operation; The preparatory moist curing equipment of cylindrical mixer conduct that the present invention adopts iron and steel enterprise to possess; And set about from the water absorption course analysis of powdered iron ore, analyze the lack of water situation of powdered iron ore in the mixed pelletizing process, thereby make reasonably preparatory wetting scheme.When mineral contact with water, water can under the capillary force effect, be inhaled between the mineral grain in addition the mineral space in, until the suction saturated.The powdered iron ore suction also is the water absorption course that a final state reaches the suction saturation balance; Consider that the Lagergren equation is applicable to that system does not contain restraint force and final state is the dynamic process of equilibrium state, so adopt the kinetic model of Lagergren first order rate equation to study the water absorption course of powdered iron ore among the present invention.According to mass conservation law, the differential expression of powdered iron ore water absorption course Lagergren first order rate equation is following:
d(M(t)·m)/dt=k·A·ρ·(M
C-M(t)) （1）；
In the formula (1), t express time, d/dt are represented the differential to time t; M representes the quality of powdered iron ore self; The time t of M (t) expression water absorption course is the absorption of water of powdered iron ore constantly, i.e. the mass percent of contained humidity and powdered iron ore self in the time t moment powdered iron ore; A representes the suction area of powdered iron ore; ρ representes the density of water; K representes the suction mass transfer coefficient of powdered iron ore, i.e. the transmission speed of moisture in powdered iron ore.
Because after the powdered iron ore suction reached capacity, powdered iron ore absorption of water rate over time was 0, that is:
d(M
C·m)/dt=0； （2）；
Therefore, can get by formula (1) and formula (2):
d[(M
C-M(t))·m]/dt=d(M
C·m)/dt-d(M(t)·m)/dt
=0-d(M(t)·m)/dt
=-d(M(t)·m)/dt
=-k·A·ρ·(M
C-M(t)) （3）；
Note y=M
C-M (t), then formula (3) can be designated as:
dy/dt=-k·A·ρ·y/m； （4）；
Final condition because of the powdered iron ore water absorption course is again:
y
t=0=M
C-M(t=0)=M
C；?y
t=∞=M
C-M(t=∞)=M
C-M
C=0；
Therefore can get by formula (4) integration:
M(t)=M
C[1-exp(-k·A·ρ·t/m)] （5）；
Formula (5) is the functional relation of absorption of water M (t) and time t in the powdered iron ore water absorption course, and substitution formula (5) was tried to achieve after wherein the suction mass transfer coefficient k of powdered iron ore can obtain experimental data through the suction experiment.
And when carrying out water distribution and mix with cylindrical mixer, because factors such as the compounding effect of cylindrical mixer and self structure, the functional relation of powdered iron ore water absorption course need be done certain correction in the cylindrical mixer:
M(t)=M
C[1-exp(-k·A·ρ·t·B/m)] （6）；
In the formula (6), B is a correction factor, and for different cylindrical mixers, its corresponding update the system is not quite similar, and can adopt cylindrical mixer to carry out the water distribution combined experiments and obtain the value that substitution formula (6) behind the experiment parameter is tried to achieve its corresponding correction factor B.Generally, the value of correction factor B (0 ~ 5] in the interval.
And when carrying out the water distribution mixing with cylindrical mixer; The suction area A of powdered iron ore can not directly measure as such in the suction experiment; Therefore can only get equivalence suction area, distributed water flow F, water distribution exit velocity v and powdered iron ore volume and cylindrical mixer volumetrical ratio S in cylindrical mixer water distribution mixing process try to achieve:
A=F·S?/v （7）；
Because in the formula (7), volume ratio S is powdered iron ore volume V
IronWith the cylindrical mixer volume V
TubeRatio, S=V is promptly arranged
Iron/ V
TubeAnd V
Iron=m/ ρ
Iron, ρ
IronTherefore the density of expression powdered iron ore have S=m/ (ρ
IronV
Tube), that is:
(ρ iron V tube is (8) v) for A=Fm/;
Formula (8) substitution formula (6) got final product:
M
T=M
C[1-exp (kF ρ TB
1/ (ρ iron V tube v))]; (9);
Therefore, also can use formula (9) to represent the funtcional relationship of absorption of water M (t) and time t in the powdered iron ore water absorption course.
Visible based on above-mentioned analysis to the powdered iron ore water absorption course; Distributed water flow and water distribution time in that the mixed pelletizing process sets are under the situation of fixed value; Before mixed pelletizing, can be through obtaining making the suitable water distribution quantity of ball and calculating the absorption of water of knowing powdered iron ore in the mixed pelletizing process of powdered iron ore, prejudge it and whether can reach and make the suitable water distribution quantity of ball; And can not reach under the situation of the suitable water distribution quantity of ball at it; Earlier powdered iron ore is carried out preparatory moist curing, and confirm the water distribution controlled variable of preparatory moist curing, to remedy fixedly sintered production line the insufficient problem of different sorts powdered iron ore water distribution quantity through the water distribution quantity difference of calculating powdered iron ore.The schema of the preparatory moist curing method of powdered iron ore of the present invention is as shown in Figure 1, and the concrete operations step is following:
Steps A), the distributed water flow F that sets according to the mixed pelletizing process
1With the water distribution time T
1, judge whether powdered iron ore need carry out preparatory moist curing; Be specially:
A1) obtain the wet volume capacity M of powdered iron ore
CWith make the suitable water distribution quantity M of ball
W, calculate the absorption of water M of powdered iron ore in the mixed pelletizing process
T:
M
T=M
C[1-exp(-k·A
1·ρ·T
1·B
1/m
1)]；
This calculation formula is directly obtained by formula (6); Wherein, ρ representes the density of water, m
1The quality of powdered iron ore in the expression mixed pelletizing process; A
1The equivalence suction area of powdered iron ore in the expression mixed pelletizing process, A
1=(F
1S
1)/v
1, v
1Water distribution exit velocity in the expression mixed pelletizing process, S
1Powdered iron ore volume and the used cylindrical mixer volumetrical of mixed pelletizing process ratio in the expression mixed pelletizing process; K representes the suction mass transfer coefficient of powdered iron ore, B
1For making ball process correction factor, span be (0 ~ 5].
The wet volume capacity M of powdered iron ore
CWith make the suitable water distribution quantity M of ball
WBe to confirm its absorption of water M
TBasic data.
The wet volume capacity of mineral just is meant that mineral absorb water when reaching capacity naturally, the mass percent of contained humidity and mineral self in the mineral (being under the mineral dryness).The wet volume capacity M of powdered iron ore
CCan adopt conventional suction to test and measure, also can pass through the applicant's (CN101608993B) middle wet volume capacity measuring method acquisition of introducing of patent of invention " measuring the method for powdered iron ore wet volume capacity and measuring and calculating sinter mixture water distribution quantity " before this.
And in industrial sintering process; Be the ventilation property of assurance sinter bed and the quality of agglomerate; In general requiring globule size is that the sinter mixture bead of 3 ~ 8mm is The more the better, and the water distribution quantity of the globule size of sinter mixture bead and powdered iron ore has close getting in touch; Powdered iron ore make the suitable water distribution quantity of ball, just be meant when the globule size of sinter mixture bead is as much as possible when reaching desired globule size scope the mass percent of contained humidity and powdered iron ore self in the powdered iron ore (being under the powdered iron ore dryness).Powdered iron ore make the suitable water distribution quantity M of ball
WCan adopt repeatedly mixed pelletizing to test and measure, that also can utilize powdered iron ore that patent of invention " measuring the method for powdered iron ore wet volume capacity and measuring and calculating sinter mixture water distribution quantity " introduces in (CN101608993B) makes the suitable water distribution quantity M of ball
WWith wet volume capacity M
CRelational expression calculate and to obtain.
The wet volume capacity M of each powdered iron ore
CWith make the suitable water distribution quantity M of ball
WAfter obtaining, can note, in a kind of preparatory moist curing process of powdered iron ore, use repeatedly, just not need to have obtained through experiment once more in the later stage.
A2) the water distribution quantity difference Δ M=M of calculating powdered iron ore
W-M
T, if Δ M≤0, then powdered iron ore need not to carry out preparatory moist curing; If Δ M>0, then powdered iron ore need be carried out preparatory moist curing, continues performing step B), powdered iron ore is carried out preparatory moist curing.
Step B), powdered iron ore is carried out preparatory moist curing; Be specially:
B1) the distributed water flow F of the preparatory moist curing of setting
2, and according to distributed water flow F
2Confirm the water distribution time T of preparatory wet processes
2:
T
2=[-m
2·ln(1-ΔM/M
C)]/(k·A
2·ρ·B
2)；
This calculation formula is derived according to formula (6) and is obtained; Wherein, m
2The quality of representing powdered iron ore in the preparatory wet processes; A
2The equivalence suction area of representing powdered iron ore in the preparatory wet processes, A
2=F
2S
2/ v
2, v
2The water distribution exit velocity of representing preparatory wet processes, S
2Represent powdered iron ore volume and the preparatory used cylindrical mixer volumetrical of wet processes ratio in the preparatory wet processes; B
2Represent preparatory wet processes correction factor, span be (0 ~ 5].Certainly, if in advance the used cylindrical mixer of wet processes and mixed pelletizing process is identical, B is arranged then
2=B
1
B2) before mixed pelletizing, powdered iron ore is added in the used cylindrical mixer of preparatory wet processes, press distributed water flow F
2With the water distribution time T
2Water distribution mixes, and carries out preparatory moist curing.
The parameter that relates in the inventive method is used after can writing down once obtaining repeatedly, puts things right once and for all, for the use in later stage is provided convenience.
Below in conjunction with embodiment technical scheme of the present invention is further described.
Embodiment:
Present embodiment is to four kinds of different types of powdered iron ore (being expressed as powdered iron ore I, powdered iron ore II, powdered iron ore III, powdered iron ore IV respectively); Adopting parameter fixed sintered production line to carry out mixed pelletizing handles; And before mixed pelletizing is handled, adopt the inventive method to carry out preparatory moist curing, after the mixed pelletizing processing, measure through the infrared moisture survey meter again four kinds of powdered iron ore the moisture content in the corresponding sinter mixture bead measure.The infrared moisture survey meter is a currently available products; Its principle is based on moisture the infrared rays of specific wavelength is had selectivity characteristic and absorption characteristic and the water content detection of carrying out; The energy of contained water meeting absorption portion infrared light in the sinter mixture bead; The infrared light of the more absorptions of water cut is also many more, through measuring catoptrical reduction, just can on-line measurement calculates the actual water cut of sinter mixture bead.For ease of calculating, get four kinds of powdered iron ore of equal volume, record institute's four kinds of powdered iron ore quality, volume, suction mass transfer coefficient got and make the suit data of water distribution quantity of ball as shown in table 1:
Table 1
The volume of the used cylindrical mixer of mixed pelletizing process is 371.04L on the sintered production line, so it is corresponding to the volume ratio S of four kinds of powdered iron ore of being got
1Be 0.12, get correction factor B
1=0.2, carry out the water distribution time T that mixed pelletizing is handled
1=180 seconds, distributed water flow F
1=1.05m
3/ s, water distribution exit velocity v
1=0.2m/s, the equivalence of powdered iron ore suction area A in the mixed pelletizing process
1=F
1S
1/ v
1=0.64m
2
Adopt the inventive method, earlier according to steps A) calculate the absorption of water M of four kinds of powdered iron ore in the mixed pelletizing process
T, and then try to achieve the water distribution quantity difference Δ M of four kinds of powdered iron ore, the result is as shown in table 2:
Table 2
Data from table 2 are visible; Four kinds of powdered iron ore have nothing in common with each other in the water distribution quantity difference of mixed pelletizing process; Wherein the value of the water distribution quantity difference Δ M of powdered iron ore IV has been a negative; Show that powdered iron ore IV can reach required water distribution quantity through the water distribution of mixed pelletizing process, therefore do not need to carry out again preparatory moist curing.
Next; Step B according to the inventive method) powdered iron ore I, powdered iron ore II, these three kinds of powdered iron ore of powdered iron ore III are carried out preparatory moist curing; Convenient for parameter acquiring, adopting and the used identical cylindrical mixer of mixed pelletizing processing in the moist curing in advance, and it is identical with the distributed water flow of mixed pelletizing process to set the distributed water flow of preparatory moist curing; The volume that is the used cylindrical mixer of preparatory wet processes is 371.04L, volume ratio S
2Be 0.12, get correction factor B equally
2=0.2, distributed water flow F
2=1.05m
3/ s, water distribution exit velocity v
2=0.2m/s, thereby the equivalence suction area A of powdered iron ore in the preparatory wet processes
2=F
2S
2/ v
2=0.64m
2Utilize computingmachine according to distributed water flow F
2Confirm the water distribution time T of preparatory wet processes
2And the water distribution time of preparatory moist curing controlled automatically.Respectively powdered iron ore I, powdered iron ore II, these three kinds of powdered iron ore of powdered iron ore III are carried out preparatory moist curing, every kind of powdered iron ore adds in the used cylindrical mixer of preparatory wet processes afterwards by distributed water flow F
2Corresponding separately water distribution time T
2Water distribution mixes and carries out preparatory moist curing.
At last, adopt sintered production line that four kinds of powdered iron ore are carried out mixed pelletizing respectively and handle, through the infrared moisture survey meter measure four kinds of powdered iron ore the moisture content in the corresponding sinter mixture bead, as shown in table 3:
Table 3
Visible through table 4 with the data contrast in the table 1; After through the inventive method powdered iron ore I, powdered iron ore II, powdered iron ore III being carried out preparatory moist curing respectively; The water cut of the sinter mixture bead that it is corresponding with its make the suitable water distribution quantity of ball mutually ratio error less than 10%; Than not carrying out preparatory moist curing (referring to table 2 data); Powdered iron ore I, powdered iron ore II, the powdered iron ore III insufficient problem of water distribution quantity in the mixed pelletizing process has obtained effectively remedying,, resulting sinter mixture bead can both better satisfy the requirement of suitable intensity and globule size.Preparatory moist curing method of the present invention can utilize computer programming to realize that computingmachine calculates automatically, control automatically fully, thereby a kind of robotization control scheme that the sintering mineral aggregate water distribution of conduct is regulated is applied in the sintering processes.
Explanation is at last; Above embodiment is only unrestricted in order to technical scheme of the present invention to be described; Although with reference to preferred embodiment the present invention is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention; And not breaking away from the aim and the scope of technical scheme of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (1)
1. the preparatory moist curing method of powdered iron ore is characterized in that, comprises the steps:
A) the distributed water flow F that sets according to the mixed pelletizing process
1With the water distribution time T
1, judge whether powdered iron ore need carry out preparatory moist curing; Be specially:
A1) obtain the wet volume capacity M of powdered iron ore
CWith make the suitable water distribution quantity M of ball
W, calculate the absorption of water M of powdered iron ore in the mixed pelletizing process
T:
M
T=M
C[1-exp(-k·A
1·ρ·T
1·B
1/m
1)]；
Wherein, ρ representes the density of water, m
1The quality of powdered iron ore in the expression mixed pelletizing process; A
1The equivalence suction area of powdered iron ore in the expression mixed pelletizing process, A
1=(F
1S
1)/v
1, v
1Water distribution exit velocity in the expression mixed pelletizing process, S
1Powdered iron ore volume and the used cylindrical mixer volumetrical of mixed pelletizing process ratio in the expression mixed pelletizing process; K representes the suction mass transfer coefficient of powdered iron ore, B
1For making ball process correction factor, span be (0 ~ 5];
A2) the water distribution quantity difference Δ M=M of calculating powdered iron ore
W-M
T, if Δ M≤0, then powdered iron ore need not to carry out preparatory moist curing; If Δ M>0, then powdered iron ore need be carried out preparatory moist curing, continues performing step B);
B) powdered iron ore is carried out preparatory moist curing; Be specially:
B1) the distributed water flow F of the preparatory moist curing of setting
2, and according to distributed water flow F
2Confirm the water distribution time T of preparatory wet processes
2:
T
2=[-m
2·ln(1-ΔM/M
C)]/(k·A
2·ρ·B
2)；
Wherein, m
2The quality of representing powdered iron ore in the preparatory wet processes; A
2The equivalence suction area of representing powdered iron ore in the preparatory wet processes, A
2=F
2S
2/ v
2, v
2The water distribution exit velocity of representing preparatory wet processes, S
2Represent powdered iron ore volume and the preparatory used cylindrical mixer volumetrical of wet processes ratio in the preparatory wet processes; B
2Represent preparatory wet processes correction factor, span be (0 ~ 5];
B2) before mixed pelletizing, powdered iron ore is added in the used cylindrical mixer of preparatory wet processes, press distributed water flow F
2With the water distribution time T
2Water distribution mixes, and carries out preparatory moist curing.
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|---|---|---|---|
| CN2011103397832A CN102392127A (en) | 2011-11-01 | 2011-11-01 | Pre-humidification method of iron ore powder |
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|---|---|---|---|
| CN2011103397832A CN102392127A (en) | 2011-11-01 | 2011-11-01 | Pre-humidification method of iron ore powder |
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ID=45859507
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104152677A (en) * | 2014-08-18 | 2014-11-19 | 武汉钢铁(集团)公司 | A method of controlling the suitable granulation moisture content of a sinter mixture |
| CN105716989A (en) * | 2016-04-12 | 2016-06-29 | 武汉科技大学 | Device and method for determining water retention and permeation characteristics of porous packed bed layer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101608993A (en) * | 2009-07-16 | 2009-12-23 | 重庆大学 | Measure the method for Iron Ore Powder wet volume capacity and measuring and calculating sinter mixture water distribution quantity |
-
2011
- 2011-11-01 CN CN2011103397832A patent/CN102392127A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101608993A (en) * | 2009-07-16 | 2009-12-23 | 重庆大学 | Measure the method for Iron Ore Powder wet volume capacity and measuring and calculating sinter mixture water distribution quantity |
Non-Patent Citations (3)
| Title |
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| 吕学伟: "炼铁流程中铁矿石评价体系构建", 《中国博士学位论文全文数据库 工程科技I辑》, no. 12, 15 December 2010 (2010-12-15) * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104152677A (en) * | 2014-08-18 | 2014-11-19 | 武汉钢铁(集团)公司 | A method of controlling the suitable granulation moisture content of a sinter mixture |
| CN105716989A (en) * | 2016-04-12 | 2016-06-29 | 武汉科技大学 | Device and method for determining water retention and permeation characteristics of porous packed bed layer |
| CN105716989B (en) * | 2016-04-12 | 2018-10-09 | 武汉科技大学 | The measurement device and its assay method of porous accumulation bed water holding and Permeable characteristic |
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Application publication date: 20120328 |