CN113485473B - Intelligent water control method for sintering mixture - Google Patents
Intelligent water control method for sintering mixture Download PDFInfo
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Abstract
The invention discloses an intelligent water control method for a sintering mixture, which improves the quality and the yield of sintered ores. Comprising the following steps: s1: setting a water content target value of the first mixed material and the second mixed material; s2: measuring mass and water content data of materials at a feeding end of a mixer; s3: calculating a mixed water adding amount by a computer; s4: the computer controls the water adding system to add water to the mixed mixture; s5: measuring mass and water content data of materials at a feeding end of the secondary mixer; s6: the computer corrects the water adding amount in the step S3 and enters the step S4; s7: calculating the secondary mixing water adding quantity by a computer; s8: the computer controls the water adding system to add water to the two-mixed mixture; s9: the water measuring system obtains the mass and the water content of the material at the feeding end of the sintering trolley; s10: the computer corrects the water addition amount in S7, and sends the result to the water addition system, and the process proceeds to S8.
Description
Technical Field
The invention belongs to the technical field of water monitoring of ferrous metallurgy sinter mixture, and relates to an intelligent water control method of a sinter mixture.
Background
The iron and steel industry is a supporting industry of national economy, and blast furnace iron making is a key component of the iron and steel industry. In the metal smelting process, the sintering production process is a front-stage process of blast furnace ironmaking, and provides raw materials for blast furnace ironmaking. The sintering process is an important step in powder metallurgy and comprises a batching (1), a mixing (2), a sintering (3), a crushing system (4), a cooling system (5) and a screening system (6), as shown in figure 1. Which plays a decisive role in the product properties. Sintering is a heat treatment method of solid powder/granules, and aims to improve the ore grade and strength and densification degree. The method comprises the steps of mixing and granulating iron ore powder, coal powder, flux and the like in a water distribution manner, and then placing the mixture on a sintering trolley for ignition and combustion to obtain the sintered ore required by blast furnace ironmaking.
The quality of the sintered product is closely related to the air permeability of the sintered mix, and one important process parameter affecting the mix granulation and the air permeability of the material layer is the moisture content of the mix. Therefore, the moisture content has direct influence on the quality, the yield and the like of the sintered finished product, and the influence on the whole sintering production process is the greatest. Firstly, the water addition amount of the sintering mixture plays a vital role in quicklime digestion, granulation and the like; secondly, in the sintering process, the water content determines the air permeability of the raw materials, the vertical burning speed is directly influenced, the energy consumption is increased, the phenomenon of face burning and imperviousness can occur when the water content is low, and the phenomenon of excessive dissolution and scaly trolley sticking can occur when the water content is large; again, fluctuations in moisture content can directly affect the strength and yield of the sintered product ore. In the sintering process, the water content affects not only the sintering quality but also the production efficiency, and therefore, water is one of the important factors affecting the sintering in the steel industry. The proper water content is the basic condition of uniform mixing of raw materials, good granulating effect and good air permeability, so that the actual water content condition of the mixture needs to be mastered in real time, and the additional water adding amount, the burning time and the temperature are adjusted according to the actual water content condition, so that the water content of the mixture is maintained in a stable range in the production process of the sintering process.
The current raw material situation of most of domestic iron and steel enterprises is that iron ores are various in variety and large in component fluctuation, the fluctuation of water content of a mixture is large, the water distribution amount in the manual water adding process is difficult to ensure precision, and great difficulty is brought to the sintering process. At the same time, the change of climate can also lead to great change of the moisture of the raw materials. However, in practical production, the water distribution amount of the sintering mixture is always fixed, the change of the water distribution amount is delayed from the change of the raw materials, and once obvious quality problems occur in the sintering process, the process parameters such as water addition amount and the like can be adjusted. The workers in the post lack effective assessment of the mixed water addition behavior change caused by the raw material change. All of the above factors result in difficulty in stably controlling the water content of the sinter mix to an appropriate value.
Disclosure of Invention
Aiming at the technical problem of sintering water control in the prior art, the invention aims to provide an intelligent water control method for a sintering mixture, which utilizes an online microwave water meter to monitor the water content in real time, and a PLC control system realizes accurate water adding and improves the quality and yield of sintered ores.
In order to achieve the above purpose, the present invention provides the following technical solutions:
an intelligent water control method for sintering a mixture, a device for preparing the sintering mixture, comprises the following steps:
s1: setting a water content target value of the first mixed material and the second mixed material according to the process requirement;
s2: the water measuring system measures the mass and water content data of the materials at the feeding end of a mixer and sends the result to the computer;
s3: the computer calculates a mixed water adding amount according to a formula (1 a) or a formula (1 b) according to the received data and a mixed water content target value, and sends the result to the water adding system;
water quantity of mixture
Water mixing and adding quantity Q 1 ＝ω 1,0 m 1 -ω 1 m 1 +αm CaO (1b)
S4: the computer controls the water adding system to add water to the mixed mixture;
s5: the water measuring system measures the mass and water content data of the materials at the feeding end of the secondary mixer and sends the result to the computer;
s6: the computer corrects the water adding amount in the step S3 according to the formula (2), sends the result to a water adding system, and enters the step S4;
mix water addition correction Q' 1 ＝ω 1,0 m s1 -ω s1 m s1 +Q 1 (2)
S7: the computer calculates the secondary mixing water adding amount according to the mass and water content data of the materials at the feeding end of the secondary mixer and the secondary mixing water content target value according to a formula (3), and sends the result to the water adding system;
two-mixing water quantity Q 2 ＝ω 2,0 m s1 -ω s1 m s1 (3)
S8: the computer controls the water adding system to add water to the two-mixed mixture;
s9: the water measuring system acquires the mass and the water content of the material at the feeding end of the sintering trolley, and sends the result to the computer;
s10: the computer corrects the water adding amount in the step S7 according to the formula (4), sends the result to a water adding system, and enters the step S8;
two-mixing water quantity correction Q' 2 ＝ω 2,0 m s2 -ω s2 m s2 +Q 2 (4)
Wherein: omega 1,0 Is a mixed water content target value,%; omega 2,0 Is a target value of the secondary mixing water content,%; omega i Moisture of the material on the ith material conveying belt,%; m is m i The mass flow of the material on the conveyor belt is Kg/h for the ith material; alpha is the activity coefficient of CaO; m is m CaO Kg/h is the mass flow of CaO in the material; m is m 1 Kg/h is the mass flow before mixing and feeding; omega 1 The actual water content of a mixed material detected by an online microwave water meter is%; omega s1 The water content is the actual water content of a mixture detected by an online microwave water meter,%; m is m s1 The mass flow of the material on a mixed discharging belt is Kg/h; omega s2 The water content of the second mixture detected by the on-line microwave water meter is%; m is m s2 The mass flow of the materials on the two mixed discharging belts is Kg/h; i is an integer of 1 or more.
Preferably, S11 is further included: and (3) adjusting the water adding amount in the step (S7) according to the data in the gas hygrometer in the flue, sending the result to a water adding system, and entering the step (S8).
Preferably, if the gas hygrometer index in the flue pipe is less than 45%, the flue gas is overdry, and the secondary mixing water adding amount is required to be increased; if the index of the gas hygrometer in the flue pipe is in the range of 45-80%, the corrected secondary mixing water quantity is proper, and adjustment is not needed; if the index of the gas hygrometer in the flue pipe is more than 80%, the flue gas is excessively wet, and the secondary mixing water addition amount is required to be reduced.
Preferably, in the step S11, the calculation model for adjusting the amount of the secondary mixing water according to the gas hygrometer is:
ΔQ＝k(H 0 -H)m s2 (1-ω s2 ) (5)
wherein: delta Q is the amount of the secondary mixed water to be adjusted, kg/h, and delta Q is positive, which indicates that the amount of the secondary mixed water needs to be increased; when delta Q is negative, the water adding amount of the second mixing is required to be reduced; k is a correction coefficient, H 0 Index target range,%; h is the measured number of the gas hygrometer in the flue,%.
Preferably, the correction coefficient is taken to be 0.02.
Preferably, the device for sintering the mixture comprises a proportioning bin and a proportioning belt, wherein a mixing feeding belt, a mixing machine, a mixing discharging belt, a two mixing machines, a two mixing discharging belt and a sintering trolley are sequentially arranged at the downstream end of the proportioning belt;
the water adding system is used for adding water to the first mixer and the second mixer, and the computer is used for setting a water content target value and controlling the water adding amount of the water adding system according to the difference value between the measurement result of the water measuring system and the water content target value;
the water measuring system comprises an online microwave water measuring instrument which is respectively arranged at the feeding end of the first mixer, the feeding end of the second mixer and the feeding end of the sintering trolley, and an electronic belt scale which is respectively arranged on the belt of the feeding end of the first mixer, the feeding end of the second mixer and the feeding end of the sintering trolley;
the water measuring system further comprises a gas hygrometer arranged in the flue of the sintering trolley, and the computer further corrects the water adding amount of the secondary mixing according to the measurement result of the gas hygrometer so that the water content of the sintering mixture is finally and stably controlled within a set target value range;
the material mixing machine is characterized by further comprising a material mixing main belt, wherein the number of the material mixing bins and the number of the material mixing belts are multiple, and the material mixing main belt is arranged between the material mixing belts and a mixed feeding belt and used for inputting materials output by the material mixing belts into the mixed feeding belt together.
Preferably, the online microwave water meter is respectively arranged above each batching belt, above a mixing discharging belt and above two mixing discharging belts, the electronic belt balance is respectively arranged below each batching belt, below the mixing discharging belt and below the two mixing discharging belts, and in the step S3, a computer calculates a mixing water adding amount according to a formula (1 a);
or, the online microwave water meter is respectively arranged above a mixing feeding belt, a mixing discharging belt and two mixing discharging belts, the electronic belt balance is respectively arranged below each batching belt, below a mixing discharging belt and two mixing discharging belts, and the step S3 is as follows: the computer calculates a mixed water amount according to the formula (1 b).
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the invention effectively overcomes the defect that the precision of manually controlling the water distribution is difficult to ensure, realizes the automatic control of the water adding amount in the mixing process, and reduces the labor intensity of post work;
2. the water content in the sintering mixture is stabilized, the fluctuation of the water content is reduced, the influence of objective factors such as climate, air humidity and the like on the water adding amount is improved, the air permeability of the sintering material layer is effectively improved, the sintering quality and the production efficiency are improved, and the energy consumption is reduced.
Drawings
FIG. 1 is a schematic diagram of a water measurement system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another water measurement system according to an embodiment of the present invention;
FIG. 3 is a schematic view of a water feeding system according to the present invention;
in the attached drawings, 1, a proportioning bin; 2. an on-line microwave water meter; 3. a batching belt; 4. an electronic belt scale; 5. a main belt for batching; 6. a mixing feed belt; 7. a mixer; 8. a mixing discharging belt; 9. a second mixer; 25. a second mixing discharging belt; 10. sintering trolley; 11. a flue gas duct; 12. a gas hygrometer; 13. a crushing system; 14. a cooling system; 15. a screening system; 16. a blast furnace; 17. returning ore;
18. a water tank; 19. a manual valve; 20. an electromagnetic shut-off valve; 21. a variable frequency centrifugal pump; 22. an electromagnetic flowmeter; 23. a pressure sensor; 24. an intelligent proportional control valve.
Detailed Description
For the purpose of making the objects, technical solutions and some of the present invention more apparent, the present invention will be further described with reference to the accompanying drawings and examples, in which the exemplary embodiments of the present invention and the descriptions thereof are only used to support the present invention, and are not limited thereto.
Example 1
This test example provides an intelligent water control system for sintering mixture, including survey water system and water adding system. The water measuring system is shown in figure 1 and comprises an online microwave water meter 2, an electronic belt scale 4 and a gas hygrometer 12. The on-line microwave water meter 2 is respectively arranged above each batching belt, a mixing discharging belt 8 and two mixing discharging belts 25. The electronic belt scale 4 is respectively arranged below each batching belt, a mixing discharging belt 8 and two mixing discharging belts 25. The gas hygrometer 12 is mounted in the flue gas duct 11. The water adding system is shown in figure 3, comprises a water tank 18, a manual valve 19, an electromagnetic cut-off valve 20, a variable frequency centrifugal pump 21, an electromagnetic flowmeter 22, a pressure sensor 23 and a proportional intelligent regulating valve 24, and is connected in series with a PLC control system.
In the implementation of this embodiment, first, the target values ω of the water contents of the first and second mixtures are preset in the computer 1,0 And omega 2,0 The method comprises the steps of carrying out a first treatment on the surface of the The water content omega of the materials in each dosing belt is measured by an on-line microwave water meter 2 i The electronic belt scale 4 measures the corresponding material mass m i And sending the detection result to a computer; a processor in the computer presses the data
Calculating a mixed water adding amount by a water calculating model; the calculation result is sent to a water adding system, and the water adding system receives a water adding signal and then starts a valve to add water to a mixer through PLC control; on-line microwave water meter 2 mounted on a mixed discharging beltMeasuring the actual water content omega of a mixed material s1 An electronic belt scale 4 mounted on a mixing belt measures a mass m of a mixed material s1 And sending the detection result to a computer; a processor in the computer applies the data as Q' 1 ＝ω 1,0 m s1 -ω s1 m s1 +Q 1 Correcting the water adding quantity of the mixture, wherein the corrected water adding quantity Q' 1 Sending the water into a water adding system; the processor in the computer applies the data as Q 2 ＝ω 2, 0 m s1 -ω s1 m s1 Calculating the secondary mixing water adding quantity by a water calculating model; the calculation result is sent to a water adding system, and after the water adding system receives a water adding signal, a valve is started to add water to the two-mixing machine through the control of a PLC; an on-line microwave water meter 2 arranged on the belt of the secondary mixing material for measuring the actual water content omega of the secondary mixing material s2 The electronic belt scale 4 arranged at the position of the secondary mixing belt measures the mass m of the secondary mixing material s2 And sending the detection result to a computer; a processor in the computer applies the data as Q' 2 ＝ω 2,0 m s2 -ω s2 m s2 +Q 2 Correcting the water adding quantity of the second mixture, wherein the corrected water adding quantity Q' 2 And sending the mixture to a water adding system to finish online accurate water adding work of the mixture.
An on-line microwave water measuring system shown in figure 1 is installed on a production site, an on-line microwave water measuring instrument 2 is respectively installed on a batching belt 3, a mixing discharging belt 8 and two mixing discharging belts 25, and an electronic belt scale 4 is respectively installed below the batching belt 3, below the mixing discharging belt 8 and below the two mixing discharging belts 25. And then the water adding system is arranged at the feed inlets of the first mixer and the second mixer, and the installation pipeline is shown in figure 3.
Taking a sintering water adding control process of a certain sintering plant as an example, the measured relevant data are as follows:
| target value of water content | A mixed omega 1,0 | Two-mixed omega 2,0 |
| ω i ,％ | 7.00 | 7.50 |
| Name of the | Proportioning bin | 1 | |
|
|
|
|
|
Mixed discharging belt | Two mix ejection of compact belts |
| ω i, ％ | 7.02 | 6.76 | 6.78 | 6.45 | 0.05 | 0.04 | 4.73 | 6.98 | 7.49 | |
| m i，Kg/h | 36000 | 35500 | 37500 | 35000 | 10000 | 10000 | 16000 | 182000 | 182900 |
The activity coefficient of CaO was measured to be 0.37.
The theoretical water addition amount of the mixture is calculated as follows:
after the water adding amount of a mixed material is controlled by a PLC, an on-line microwave water meter 2 arranged on a mixed material belt measures the actual water content omega of the mixed material s1 =6.98%, and the electronic belt scale 4 mounted on a mixing belt measures a mass m of the mixture s1 = 182000Kg/h; according to the actual water content, the water quantity Q is added to the first mixture 1 The correction is carried out, and the correction calculation process is as follows:
Q’ 1 ＝ω 1,0 m s1 -ω s1 m s1 +Q 1
＝7/100*182000-6.98/100*182000+9507.2＝9543.6Kg/h
that is, the actual water addition amount for one mixing should be 9543.6Kg/h.
The theoretical water addition amount calculation process of the second mixing is as follows:
Q 2 ＝ω 2,0 m s1 -ω s1 m s1 ＝7.5/100×182000-6.98/100×182000
＝946.4Kg/h
after the secondary mixing water adding quantity is controlled by a PLC, an on-line microwave water meter 2 arranged on a secondary mixing discharging belt measures the actual water content omega of the secondary mixing material s2 =7.49%, and the electronic belt scale 4 mounted on a mixing belt measures a mass m of the mixture s2 = 182900Kg/h; according to the actual water content, the water quantity Q is added to the first mixture 2 The correction is carried out, and the correction calculation process is as follows:
Q’ 2 ＝ω 2,0 m s2 -ω s2 m s2 +Q 2
＝7.5/100×182900-7.49/100×182900+946.4＝964.69Kg/h
in the embodiment, the index of the gas hygrometer in the flue pipe is 53%, and the humidity control is reasonable, so that the secondary mixing water adding amount is not modified. Namely, the actual water addition amount of the two-component mixture should be 964.69Kg/h.
Example two
This test example provides an intelligent water control system for sintering mixture, including survey water system and water adding system. The water measuring system is shown in fig. 2, and comprises an online microwave water meter 2, an electronic belt scale 4 and a gas hygrometer 12. The on-line microwave water meter 2 is respectively arranged above a mixing feeding belt 6, a mixing discharging belt 8 and two mixing discharging belts 25. The electronic belt scale 4 is respectively arranged below each batching belt, a mixing discharging belt 8 and two mixing discharging belts 25. The gas hygrometer 12 is mounted in the flue gas duct 11. The processor in the computer applies the data as Q 1 ＝ω 1,0 m 1 -ω 1 m 1 +αm CaO Calculating a mixed water adding amount by a water calculating model; and send the calculation result to the water addingIn the system, the two-mixture calculation process is the same as that of the first embodiment. The water adding system is shown in figure 3, comprises a water tank 18, a manual valve 19, an electromagnetic cut-off valve 20, a variable frequency centrifugal pump 21, an electromagnetic flowmeter 22, a pressure sensor 23 and a proportional intelligent regulating valve 24, and is connected in series with a PLC control system.
Taking a sintering water adding control process of a certain sintering plant as an example, the measured relevant data are as follows:
| target value of water content | A mixed omega 1,0 | Two-mixed omega 2,0 |
| ω i ,％ | 7.00 | 7.50 |
| Name of the name | Mixed feeding belt | Mixed discharging belt | Two mix ejection of compact belts |
| ω i ,％ | 4.73 | 7.02 | 7.51 |
| m i ，Kg/h | 120000 | 123000 | 123600 |
The mass flow rate of CaO in the ingredients is 18000Kg/h, and the activity coefficient is measured to be 0.36.
The theoretical water addition amount of the mixture is calculated as follows:
after the water adding amount of a mixed material is controlled by a PLC, an on-line microwave water meter 2 arranged on a mixed material belt measures the actual water content omega of the mixed material s1 =7.02%, and the electronic belt scale 4 mounted on a mixing belt measures a mass m of the mixture s1 =123000 Kg/h; according to the actual water content, the water quantity Q is added to the first mixture 1 The correction is carried out, and the correction calculation process is as follows:
Q’ 1 ＝ω 1,0 m s1 -ω s1 m s1 +Q 1 ＝7/100×123000-7.02/100×123000+9204
＝9179.4Kg/h
that is, the actual water addition amount for one mixing should be 9179.4Kg/h.
The theoretical water addition amount calculation process of the second mixing is as follows:
Q 2 ＝ω 2,0 m s1 -ω s1 m s1 ＝7.5/100×123000-7.02/100×123000
＝590.4Kg/h
after the secondary mixing water adding quantity is controlled by a PLC, an on-line microwave water meter 2 arranged on a secondary mixing discharging belt measures the actual water content omega of the secondary mixing material s2 =7.51%, and the electronic belt scale 4 mounted on a mixing belt measures a mass m of the mixture s2 = 123600Kg/h; according to the actual water content, the water quantity Q is added to the first mixture 2 The correction is carried out, and the correction calculation process is as follows:
Q’ 2 ＝ω 2,0 m s2 -ω s2 m s2 +Q 2
＝7.50/100×123600-7.51/100×123600+590.4
＝578.04Kg/h
in this embodiment, the index of the hygrometer of the gas in the flue pipe is 70%, the humidity is too high, and the corrected two-mixture water addition amount needs to be adjusted according to the calculation model (5), namely Δq=k (H) 0 -H)m s2 (1-ω s2 )＝0.01×[(70％-60％)/100]×123600×[(1-7.51％)/100]＝-8.04Kg/h
And when the water adding amount of the second mixture is adjusted, the actual water adding amount Q= 578.04-8.04=570 Kg/h of the second mixture.
While only the preferred embodiments of the present invention have been described above, it should be noted that those skilled in the art can make several variations and modifications without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect and practicality of the implementation of the present invention.
Claims (7)
1. An intelligent water control method for sintering a mixture, a device for preparing the mixture is characterized by comprising the following steps:
s1: setting a water content target value of the first mixed material and the second mixed material according to the process requirement;
s2: the water measuring system measures the mass and water content data of the materials at the feeding end of a mixer and sends the result to the computer;
s3: the computer calculates a mixed water adding amount according to a formula (1 a) or a formula (1 b) according to the received data and a mixed water content target value, and sends the result to the water adding system;
water quantity of mixture
Water mixing and adding quantity Q 1 ＝ω 1，0 m 1 -ω 1 m 1 +αm CaO (1b)
S4: the computer controls the water adding system to add water to the mixed mixture;
s5: the water measuring system measures the mass and water content data of the materials at the feeding end of the secondary mixer and sends the result to the computer;
s6: the computer corrects the water adding amount in the step S3 according to the formula (2), sends the result to a water adding system, and enters the step S4;
mix water addition correction Q' 1 ＝ω 1，0 m s1 -ω s1 m s1 +Q 1 (2)
S7: the computer calculates the secondary mixing water adding amount according to the mass and water content data of the materials at the feeding end of the secondary mixer and the secondary mixing water content target value according to a formula (3), and sends the result to the water adding system;
two-mixing water quantity Q 2 ＝ω 2，0 m s1 -ω s1 m s1 (3)
S8: the computer controls the water adding system to add water to the two-mixed mixture;
s9: the water measuring system acquires the mass and the water content of the material at the feeding end of the sintering trolley, and sends the result to the computer;
s10: the computer corrects the water adding amount in the step S7 according to the formula (4), sends the result to a water adding system, and enters the step S8;
two-mixing water quantity correction Q' 2 ＝ω 2，0 m s2 -ω s2 m s2 +Q 2 (4)
Wherein: omega 1，0 Is a mixed water content target value,%; omega 2，0 Is a target value of the secondary mixing water content,%; omega i Moisture of the material on the ith material conveying belt,%; m is m i The mass flow of the material on the conveyor belt is Kg/h for the ith material; alpha is the activity coefficient of CaO; m is m CaO Kg/h is the mass flow of CaO in the material; m is m 1 Kg/h is the mass flow before mixing and feeding; omega 1 The actual water content of a mixed material detected by an online microwave water meter is%; omega s1 The water content is the actual water content of a mixture detected by an online microwave water meter,%; m is m s1 The mass flow of the material on a mixed discharging belt is Kg/h; omega s2 The water content of the second mixture detected by the on-line microwave water meter is%; m is m s2 The mass flow of the materials on the two mixed discharging belts is Kg/h; i is an integer of 1 or more.
2. The intelligent water control method for sintering mixture as set forth in claim 1, further comprising S11: and (3) adjusting the water adding amount in the step (S7) according to the data in the gas hygrometer in the flue, sending the result to a water adding system, and entering the step (S8).
3. The intelligent water control method of the sintering mixture according to claim 2, wherein if the index of the gas hygrometer in the flue pipe is less than 45%, the flue gas is overdry, and the secondary mixing water amount is required to be increased; if the index of the gas hygrometer in the flue pipe is in the range of 45-80%, the corrected secondary mixing water quantity is proper, and adjustment is not needed; if the index of the gas hygrometer in the flue pipe is more than 80%, the flue gas is excessively wet, and the secondary mixing water addition amount is required to be reduced.
4. The intelligent water control method for sintering mixture according to claim 3, wherein in the step S11, the calculation model for adjusting the secondary mixing water amount according to the gas hygrometer is as follows:
ΔQ＝k(H 0 -H)m s2 (1-ω s2 ) (5)
wherein: delta Q is the amount of the secondary mixed water to be adjusted, kg/h, and delta Q is positive, which indicates that the amount of the secondary mixed water needs to be increased; when delta Q is negative, the water adding amount of the second mixing is required to be reduced; k is a correction coefficient, H 0 Index target range,%; h is the measured number of the gas hygrometer in the flue,%.
5. The intelligent water control method for sintering mixture as set forth in claim 4, wherein said correction factor is 0.02.
6. The intelligent water control method for the sintering mixture according to claim 1, wherein the device for sintering the mixture comprises a proportioning bin and a proportioning belt, and a mixing feeding belt, a mixing machine, a mixing discharging belt, a two mixing machine, a two mixing discharging belt and a sintering trolley are sequentially arranged at the downstream end of the proportioning belt;
the water adding system is used for adding water to the first mixer and the second mixer, and the computer is used for setting a water content target value and controlling the water adding amount of the water adding system according to the difference value between the measurement result of the water measuring system and the water content target value;
the water measuring system comprises an online microwave water measuring instrument which is respectively arranged at the feeding end of the first mixer, the feeding end of the second mixer and the feeding end of the sintering trolley, and an electronic belt scale which is respectively arranged on the belt of the feeding end of the first mixer, the feeding end of the second mixer and the feeding end of the sintering trolley;
the water measuring system further comprises a gas hygrometer arranged in the flue of the sintering trolley, and the computer further corrects the water adding amount of the secondary mixing according to the measurement result of the gas hygrometer so that the water content of the sintering mixture is finally and stably controlled within a set target value range;
the material mixing machine is characterized by further comprising a material mixing main belt, wherein the number of the material mixing bins and the number of the material mixing belts are multiple, and the material mixing main belt is arranged between the material mixing belts and a mixed feeding belt and used for inputting materials output by the material mixing belts into the mixed feeding belt together.
7. The intelligent water control method for the sintering mixture as set forth in claim 6, wherein:
the online microwave water meter is respectively arranged above each batching belt, a mixing discharging belt and two mixing discharging belts, the electronic belt balance is respectively arranged below each batching belt, one mixing discharging belt and two mixing discharging belts, and in the step S3, a computer calculates a mixing water adding amount according to a formula (1 a);
or, the online microwave water meter is respectively arranged above a mixing feeding belt, a mixing discharging belt and two mixing discharging belts, the electronic belt balance is respectively arranged below each batching belt, below a mixing discharging belt and two mixing discharging belts, and the step S3 is as follows: the computer calculates a mixed water amount according to the formula (1 b).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101477378A (en) * | 2008-12-26 | 2009-07-08 | 首钢总公司 | Humidity control method for mixture used in sintering production |
| CN102063131A (en) * | 2010-11-16 | 2011-05-18 | 吕斌 | Automatic water mixing control system for sintering production |
| CN102156486A (en) * | 2011-01-30 | 2011-08-17 | 唐山钢铁集团微尔自动化有限公司 | Control method for adding water in mixture in sintering production |
| CN103019090A (en) * | 2012-12-06 | 2013-04-03 | 鞍山市海汇自动化有限公司 | Intelligent sintering mixed water adding control method with prediction function |
| JP2016104901A (en) * | 2014-11-21 | 2016-06-09 | 新日鐵住金株式会社 | Modified carbonaceous material for manufacturing sinter ore and manufacturing method of sinter ore using the same |
| CN105986118A (en) * | 2015-01-27 | 2016-10-05 | 宝钢不锈钢有限公司 | Automatic water adding apparatus for mixed material in sintering machine and control method thereof |
| CN106191426A (en) * | 2016-07-26 | 2016-12-07 | 宣化钢铁集团有限责任公司 | A kind of sinter mixture automatic watering Apparatus and method for |
| CN107728665A (en) * | 2017-09-18 | 2018-02-23 | 首钢京唐钢铁联合有限责任公司 | Sintered mixture moisture control method, device, computer-readable storage medium and equipment |
| CN108130417A (en) * | 2017-12-21 | 2018-06-08 | 山东诺德能源科技有限公司 | A kind of sintered mixture moisture autocontrol method |
| CN108300852A (en) * | 2018-02-27 | 2018-07-20 | 首钢京唐钢铁联合有限责任公司 | A kind of pelletizing mixture moisture control device and method |
| CN111732357A (en) * | 2020-08-11 | 2020-10-02 | 华电电力科学研究院有限公司 | System and method for preparing lightweight aggregate by using fly ash and municipal sludge |
| CN112000137A (en) * | 2020-08-31 | 2020-11-27 | 重庆花喜鹊科技有限公司 | Automatic water control process system for sintering raw materials |
-
2021
- 2021-07-02 CN CN202110751473.5A patent/CN113485473B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101477378A (en) * | 2008-12-26 | 2009-07-08 | 首钢总公司 | Humidity control method for mixture used in sintering production |
| CN102063131A (en) * | 2010-11-16 | 2011-05-18 | 吕斌 | Automatic water mixing control system for sintering production |
| CN102156486A (en) * | 2011-01-30 | 2011-08-17 | 唐山钢铁集团微尔自动化有限公司 | Control method for adding water in mixture in sintering production |
| CN103019090A (en) * | 2012-12-06 | 2013-04-03 | 鞍山市海汇自动化有限公司 | Intelligent sintering mixed water adding control method with prediction function |
| JP2016104901A (en) * | 2014-11-21 | 2016-06-09 | 新日鐵住金株式会社 | Modified carbonaceous material for manufacturing sinter ore and manufacturing method of sinter ore using the same |
| CN105986118A (en) * | 2015-01-27 | 2016-10-05 | 宝钢不锈钢有限公司 | Automatic water adding apparatus for mixed material in sintering machine and control method thereof |
| CN106191426A (en) * | 2016-07-26 | 2016-12-07 | 宣化钢铁集团有限责任公司 | A kind of sinter mixture automatic watering Apparatus and method for |
| CN107728665A (en) * | 2017-09-18 | 2018-02-23 | 首钢京唐钢铁联合有限责任公司 | Sintered mixture moisture control method, device, computer-readable storage medium and equipment |
| CN108130417A (en) * | 2017-12-21 | 2018-06-08 | 山东诺德能源科技有限公司 | A kind of sintered mixture moisture autocontrol method |
| CN108300852A (en) * | 2018-02-27 | 2018-07-20 | 首钢京唐钢铁联合有限责任公司 | A kind of pelletizing mixture moisture control device and method |
| CN111732357A (en) * | 2020-08-11 | 2020-10-02 | 华电电力科学研究院有限公司 | System and method for preparing lightweight aggregate by using fly ash and municipal sludge |
| CN112000137A (en) * | 2020-08-31 | 2020-11-27 | 重庆花喜鹊科技有限公司 | Automatic water control process system for sintering raw materials |
Non-Patent Citations (3)
| Title |
|---|
| Rivera, RM.Wettability in water/iron ore powder systems: To the universality of the Cassie model.SO INTERNATIONAL JOURNAL OF MINERAL PROCESSING.2017,全文. * |
| 吴晓峰 ; 匡式文 ; 张佳华 ; 王玲 ; .烧结混合料加水控制策略分析与应用.山东冶金.2009,(第03期),全文. * |
| 蔡洪岩.烧结混合料水分智能控制应用与自学习建模研究.中国优秀硕士论文辑.2019,全文. * |
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