CN106444361A - Control method for adding water into mixture of sintering machine - Google Patents
Control method for adding water into mixture of sintering machine Download PDFInfo
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- CN106444361A CN106444361A CN201611076303.7A CN201611076303A CN106444361A CN 106444361 A CN106444361 A CN 106444361A CN 201611076303 A CN201611076303 A CN 201611076303A CN 106444361 A CN106444361 A CN 106444361A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 102
- 239000000203 mixture Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000005245 sintering Methods 0.000 title claims abstract description 22
- 239000002994 raw material Substances 0.000 claims abstract description 89
- 238000005259 measurement Methods 0.000 claims abstract description 23
- 238000004364 calculation method Methods 0.000 claims abstract description 19
- 238000012545 processing Methods 0.000 claims abstract description 14
- 150000001875 compounds Chemical class 0.000 claims description 32
- 238000012937 correction Methods 0.000 claims description 25
- 238000007598 dipping method Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 230000004069 differentiation Effects 0.000 abstract 1
- 230000010354 integration Effects 0.000 abstract 1
- 239000003607 modifier Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 230000003190 augmentative effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B11/00—Automatic controllers
- G05B11/01—Automatic controllers electric
- G05B11/36—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential
- G05B11/42—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential for obtaining a characteristic which is both proportional and time-dependent, e.g. P. I., P. I. D.
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- Automation & Control Theory (AREA)
- Control Of Non-Electrical Variables (AREA)
- Feedback Control In General (AREA)
Abstract
The invention relates to the technical field of water adding into mixtures of sintering machines and especially discloses a control method for adding water into a mixture of a sintering machine. The control method comprises the following steps of first, setting a target moisture ratio of the mixture according to the application of the mixture, feeding raw materials into a transmission area at a plurality of feeding points, metering the total inlet amount of the raw materials by a raw material mass weigh, and metering the total inlet amount of water by a water flowmeter; and arranging a plurality of mixed moisture instruments for tracking measurement points in a mixing area, so as to measure a real-time moisture ratio of the mixture. A PID (Proportion Integration Differentiation) fuzzy control system connected with the mixed moisture instruments, the raw material mass weigh and the water flowmeter comprises a PID control module and a fuzzy computing module, a set value of the water adding volume is obtained through calculation and fuzzy processing for data of the moisture ratio of the mixture, the mass of the raw materials, the target moisture ratio and the water adding mass which are received in real time, so as to realize the accuracy control for the water adding volume of the mixture. The problem that a control way of adding water into a mixture is lagged behind in the prior art is solved.
Description
Technical field
The technical field the present invention relates to mixture of sintering machine adds water, the control that more particularly to a kind of mixture of sintering machine adds water
Method.
Background technology
During sinter mixture, the moisture of appropriateness can improve the breathability of the bed of material, except making material balling-up, improve granularmetric composition
Outward, moisture is covered in particle surface, is played lubricant, is caused air flow through the resistance for being overcome during void among particles and subtract
Few, sintering belt can also be limited in a narrow scope.But excessive moisture can make the granularmetric composition of material be deteriorated,
Make the moisture condensation of material seriously, excessive moistening layer is thickened.The process that adds water of sintering, seeks to by primary mixer and secondary mixed
Conjunction machine adds water, and compound is maintained at certain moisture rate, reaches preferable balling-up and breathability.
The traditional mixer automatic control process that adds water is as follows：Measured according to proportion material and test obtains raw material original weight
With raw material initial moisture content, and the interpolation water yield according to needed for mixing and water adding Target moisture rate is calculated, with this to compound
Amount of water carries out the feedforward；Then according to mixer mixed rear moisture instrument surveyed mixture moisture rate, amount of water setting value is entered
Row feedback modifiers, so as to constitute the feedforward plus feedback control system of mixing and water adding flow.Feedback control be to the flow set that adds water
Value is directly revised.The flow that adds water is system inner-loop control target, and the final control targe of system is compound Target moisture
Rate.During field adjustable, the more difficult determination of parameter area of feedback modifiers control, the determination of automatic control system regulation parameter is affected,
Debugging cycle is caused to extend, amount of water sets not accurate enough.
Content of the invention
It is an object of the invention to propose the control method that a kind of mixture of sintering machine adds water, PID Fuzzy control system and
The mix moisture instrument of multiple tracking measurement points that Mixed Zone is arranged matches, and is carried out by the way of in chronological sequence tracking
Add water flow rate calculation, the control structure based on the flow feedforward that adds water, supplemented by mixture moisture rate feedback modifiers, preferably
Solve its mixing and water adding lag issues of control mode of prior art.
For reaching this purpose, the present invention is employed the following technical solutions：
The control method that a kind of mixture of sintering machine adds water, comprises the steps：
Step 1, first according to the purposes of compound set compound Target moisture rate, by raw material under multiple blanking points
Enter transmission range, claim the entrance total amount of meter feedstock by raw materials quality, measure the entrance total amount of water by water ga(u)ge, in batches
Measure original raw material moisture rate；
Step 2, pass through Mixed Zone arrange multiple tracking measurement points mix moisture instrument measurement compound reality
When moisture rate；
Step 3 and the mix moisture instrument, the PID that the raw materials quality claims and the water ga(u)ge is connected are obscured
Control system, the PID Fuzzy control system includes pid control module and Fuzzy Calculation module, by arrived to real-time reception
Mixture moisture rate, raw materials quality, Target moisture rate, the data of original raw material moisture rate and the quality that adds water are calculated and through mould
Paste processes the precise control for obtaining amount of water setting value and then realization to compound amount of water.
One of preferred version as the technical program, by pid control module according to Target moisture rate, the original of compound
The entrance quality of material and the original moisture rate of raw material calculate the amount of water setting value of each mixing, by pid control module according to
The real-time addition total amount of the real-time moisture rate of the compound that is surveyed, real-time amount of water and raw material calculate real-time raw material original with
Track moisture rate, and raw material tracking moisture rate compensating value KD is drawn after Fuzzy Processing, accordingly pid control module calculated adds
Water yield setting value is modified, and executes above-mentioned revised amount of water setting value by control valve.
One of preferred version as the technical program, the calculating of raw material tracking moisture rate compensating value KD passes through first
Real-time mixture moisture rate MI3, actual amount of water FI1 to multiple tracking measurement points, adds the actual mass WI meter of compound
The original tracking moisture rate MI1 of the multiple raw materials of correspondence is calculated, the original moisture rate MI1 computing formula that tracks of the raw material is：
Through Fuzzy Calculation module, the original tracking moisture rate MI1 and original moisture rate MI0 of raw material of multiple raw materials show that raw material is tracked
The correction output valve of moisture rate compensating value KD.
One of preferred version as the technical program, the Fuzzy Calculation module includes Fuzzy processing, fuzzy reasoning
Process, fuzzy rule base conciliates this four programs of Fuzzy Processing, multiple raw material tracking moisture rate compensating value KD are with signal e's
Form is corresponded to and is obscured as E, becomes variable U according to the fuzzy rule for determining, afterwards by ambiguity solution after fuzzy reasoning process
Reason is reduced to numerical value u, the numerical value u and tracks moisture rate compensating value KD for raw material.
One of preferred version as the technical program, it is inclined that raw material tracking moisture rate compensating value KD has moisture signal
Difference e, the excursion of the moisture deviation of signal e and true domain are [- emax, emax], its purpose domain x={-n ,-n+
1,…,0,…3,n-1,n}；
Wherein, n value in the range of 0～emax, defines quantizing factor ke=n/emax
When there is deviation signal ei, x=ke*ei can be tried to achieve.
One of preferred version as the technical program, the PID control system is also by multiple tracking measurement points
The numerical value of the real-time moisture rate of compound and real-time addition carries out Fuzzy Processing and draws the automatic correction value of former moisture Control deviation
PD.
One of preferred version as the technical program, the amount of water that the PID Fuzzy control system in step 3 is calculated sets
The computing formula of definite value FI is：
Wherein, MI2：Compound Target moisture rate；WI：Raw materials quality；MI1：The original moisture rate of raw material；KD：Raw material is tracked
Moisture rate compensating value；PD：The automatic correction value of moisture Control deviation.
One of preferred version as the technical program, automatic correction value PD of the moisture Control deviation is by PID Fuzzy Control
System processed was calculated after hybrid system operation 10-15 minute, the automatic correction value of PID Fuzzy control system computing moisture Control deviation
The cycle of PD is 3-5 minute.
One of preferred version as the technical program, on the PID Fuzzy control system with regard to moisture Control deviation certainly
The controlling dead error of -0.02-+0.02 is provided with the process logical structure of dynamic correction value PD, in -0.02-+0.02 just to prevent
Constant error difference surge area is revised excessively frequent.
One of preferred version as the technical program, the original moisture rate of the raw material is drawn by hand dipping or logical
Cross the multiple raw material moisture instrument measurement measurements for arranging in traffic zone to draw.
Beneficial effect：The mix moisture instrument of multiple tracking measurement points that PID Fuzzy control system and Mixed Zone are arranged
Match, carry out, by the way of in chronological sequence tracking, the flow rate calculation that adds water, based on the flow feedforward that adds water, compound
Control structure supplemented by moisture rate feedback modifiers, its mixing and water adding of control mode for preferably solving prior art delayed is asked
Topic, the precision of control and real-time have obtained larger raising.Raw material after Fuzzy Calculation resume module tracks moisture rate benefit
Substituting into pid control module after KD and automatic correction value PD of moisture Control deviation carries out calculating the mode of amount of water, improves
The feedback modifiers degree of accuracy of amount of water and the efficiency of feedback modifiers.
Description of the drawings
Fig. 1 is the schematic flow sheet of the control method that the mixture of sintering machine that the embodiment of the present invention 1 is provided adds water；
Fig. 2 is the structured flowchart of the Fuzzy Calculation module that the embodiment of the present invention 2 is provided；
Fig. 3 is the structured flowchart of the Fuzzy logic design with deviation augmenting factor that the embodiment of the present invention 2 is provided.
Specific embodiment
Technical scheme is further illustrated below in conjunction with the accompanying drawings and by specific embodiment.
Embodiment 1
The control method that a kind of mixture of sintering machine adds water is present embodiments provided, is comprised the steps：
Step 1, first according to the purposes of compound set compound Target moisture rate, by raw material under multiple blanking points
Enter transmission range, the transmission range is the transmission belt that the feedstock delivery for falling into is entered Mixed Zone, is provided with the transmission belt
For measuring the raw material moisture instrument of original raw material moisture rate, the raw materials quality claims on blanking point, the discharge
Meter is claimed the entrance total amount of meter feedstock, is measured by water ga(u)ge in the control valve of water inlet system by raw materials quality
The entrance total amount of water.
Step 2, pass through Mixed Zone arrange multiple tracking measurement points mix moisture instrument measurement compound reality
When moisture rate；Original raw material moisture rate, target water are drawn by the multiple raw material moisture instrument measurement measurements for arranging in traffic zone
The difference of point rate and original raw material moisture rate is for calculating deviation moisture rate.
Step 3, the mix moisture instrument, the raw materials quality claim and the water ga(u)ge is both connected to PID Fuzzy Control
In system processed, the PID Fuzzy control system includes pid control module and Fuzzy Calculation module, and the pid control module passes through
To real-time reception to mixture moisture rate, raw materials quality, Target moisture rate and the quality that adds water data calculated many
Individual amount of water setting value, the plurality of amount of water setting value is quickly accurately obtained revised amount of water and sets through Fuzzy Processing
Definite value, and then realized to the accurate of compound amount of water by the water inlet system control valve being connected with PID Fuzzy control system
Control.
The mix moisture instrument of multiple tracking measurement points that PID Fuzzy control system and Mixed Zone are arranged matches, and adopts
Carry out, with the mode in chronological sequence tracking, the flow rate calculation that adds water, based on the flow feedforward that adds water, mixture moisture rate is anti-
Control structure supplemented by feedback correction, preferably solves its mixing and water adding lag issues of control mode of prior art, control
Precision and real-time have obtained larger raising.When being embodied as, the original moisture rate of the raw material can enter blanking point original
Drawn by manual measurement before.
Embodiment 2
As different from Example 1, by pid control module according to the real-time moisture rate of the compound that is surveyed, in real time plus
The real-time addition total amount of the water yield and raw material calculates the original tracking moisture rate of real-time raw material, and draws raw material after Fuzzy Processing
Tracking moisture rate compensating value KD, the calculating of raw material tracking moisture rate compensating value KD is first by multiple tracking measurement points
Mixture moisture rate MI3, actual amount of water FI1, add the actual mass WI of compound to calculate the multiple raw material originals of correspondence in real time
Begin tracking moisture rate MI1, and the original moisture rate MI1 computing formula that tracks of the raw material is：
The original tracking moisture rate MI1 of multiple raw materials and raw material original
Through Fuzzy Calculation module, beginning moisture rate MI0 show that raw material tracks the correction output valve of moisture rate compensating value KD.
As shown in Fig. 2 the Fuzzy Calculation module includes that Fuzzy processing, fuzzy reasoning are processed, fuzzy rule base is conciliate
This four programs of Fuzzy Processing, multiple raw material tracking moisture rate compensating value KD are corresponded in the form of signal e and are obscured as E, are pressed
Become variable U according to the fuzzy rule for determining after fuzzy reasoning process, processed by ambiguity solution afterwards and numerical value u is reduced to, described
Numerical value u tracks moisture rate compensating value KD for raw material.
As shown in figure 3, raw material tracking moisture rate compensating value KD has moisture deviation of signal e, using Fuzzy Calculation mould
In block, the Fuzzy logic design with deviation augmenting factor is processed, the excursion of the moisture deviation of signal e and truly opinion
Domain is [- emax, emax], its purpose domain x={-n ,-n+1 ..., 0 ... 3, n-1, n }；
Wherein, n value in the range of 0～emax, defines quantizing factor ke=n/emax
When there is deviation signal ei, x=ke*ei can be tried to achieve.Wherein ke is constant.
Internally on domain, some fuzzy sets can be defined misty idea is described, that is, take the value of linguistic variable.With n
Value be 6 as a example by, things of the like description can be pressed：Large, medium and small and zero distinguishing, it is contemplated that to have positive and negative not, often take 7 values B,
M, S, P, N, Z, symbol be described for:{NB,NM,NS,Z,PS,PM,PB}.
Fuzzy subset A on linguistic variable domain is described with its membership function mui A (x), and μ A (x) can by operator and specially
Family experience or determined with fuzzy statistical method, is also had and is determined according to normal function, and degree of membership μ A (x) assignment is shown in Table one.
The assignment table of one membership function μ (x) of table
When being embodied as, for calculating the fuzzy rule base of the reasoning of deviation augmenting factor KD value, according to add water technique and
Operating mode, determines the fuzzy rule base of fuzzy subset A (KD) of raw material tracking moisture rate compensating value KD as shown in Table 2, according to rule
Storehouse tracks the actual value of moisture rate compensating value KD determining raw material, such that it is able to accurately feedback amount of water, controls amount of water.
The fuzzy rule base of the fuzzy subset A (KD) of two deviation of table correction KD
In order to carry out precise control further to amount of water, the PID Fuzzy control system is also by multiple tracking surveys
The real-time moisture rate of compound of amount point and the numerical value of real-time addition carry out Fuzzy Processing and show that former moisture Control deviation is automatic
Correction value PD.In order to ensure mixer traveling comfort, automatic correction value PD of the moisture Control deviation is by PID fuzzy control
System was calculated after hybrid system operation 10-15 minute, automatic correction value PD of PID Fuzzy control system computing moisture Control deviation
Execution cycle be 3-5 minute.The span of automatic correction value PD of the moisture Control deviation is (- 3%-+3%).It is described,
Be provided with process logical structure on the PID Fuzzy control system with regard to automatic correction value PD of moisture Control deviation-
The controlling dead error of 0.02-+0.02, to prevent the nominal error surge area modification in -0.02-+0.02 excessively frequent.Described just
Often fluctuating error refers to that can not be fully achieved on art technology or equipment is precisely controlled.
And then passing through pid control module, the amount of water setting value for accordingly pid control module being calculated is modified, by
Control valve executes above-mentioned revised amount of water setting value.
Raw material tracking moisture rate compensating value KD and moisture Control deviation automatic correction value PD are drawn in Fuzzy Calculation module
After Fuzzy Processing value, and pid control module is fed back to, by pid control module according to the Target moisture rate of compound, the entering of raw material
Enter the amount of water that quality and the original moisture rate of raw material calculate each mixing, the computing formula of amount of water setting value FI is：
Wherein, MI2：Compound Target moisture rate；WI：Raw materials quality；MI1：The original moisture rate of raw material；KD：Raw material is tracked
Moisture rate compensating value；PD：The automatic correction value of moisture Control deviation.
In sum, the mix moisture instrument of multiple tracking measurement points that PID Fuzzy control system and Mixed Zone are arranged
Match, carry out, by the way of in chronological sequence tracking, the flow rate calculation that adds water, based on the flow feedforward that adds water, compound
Control structure supplemented by moisture rate feedback modifiers, its mixing and water adding of control mode for preferably solving prior art delayed is asked
Topic, the precision of control and real-time have obtained larger raising.Raw material after Fuzzy Calculation resume module tracks moisture rate benefit
Substituting into pid control module after KD and automatic correction value PD of moisture Control deviation carries out calculating the mode of amount of water, improves
The feedback modifiers degree of accuracy of amount of water and the efficiency of feedback modifiers.
The know-why of the present invention is described above in association with specific embodiment.These descriptions are intended merely to explain the present invention's
Principle, and limiting the scope of the invention can not be construed to by any way.Based on explanation herein, the technology of this area
Personnel associate other specific embodiments of the present invention by need not paying performing creative labour, these modes fall within
Within protection scope of the present invention.
Claims (10)
1. the control method that a kind of mixture of sintering machine adds water, it is characterised in that comprise the steps：
Step 1, first according to the purposes of compound set compound Target moisture rate, by raw material under multiple blanking points enter pass
Defeated area, claims the entrance total amount of meter feedstock by least one raw materials quality, measures the entrance total amount of water by water ga(u)ge, point
Batch measures original raw material moisture rate；
Step 2, pass through Mixed Zone arrange multiple tracking measurement points mix moisture instrument measurement compound Real-time Water
Divide rate；
Step 3 and the mix moisture instrument, the PID fuzzy control that the raw materials quality claims and the water ga(u)ge is connected
System, the PID Fuzzy control system includes pid control module and Fuzzy Calculation module, by the mixing arrived by real-time reception
Thing moisture rate, raw materials quality, Target moisture rate, the data of original raw material moisture rate and the quality that adds water carry out calculating and through fuzzy place
Reason obtains the precise control of amount of water setting value and then realization to compound amount of water.
2. the control method that mixture of sintering machine according to claim 1 adds water, it is characterised in that by PID control mould
Tuber calculates the amount of water of each mixing according to the Target moisture rate of compound, the entrance quality of raw material and the original moisture rate of raw material
Setting value, by pid control module according to the real-time addition of the real-time moisture rate, real-time amount of water and raw material of the compound that is surveyed
Total amount calculates the original tracking moisture rate of real-time raw material, and draws raw material tracking moisture rate compensating value KD after Fuzzy Processing,
The amount of water setting value for accordingly pid control module being calculated is modified, and executes above-mentioned revised amount of water by control valve
Setting value.
3. the control method that mixture of sintering machine according to claim 2 adds water, it is characterised in that the raw material tracks water
Divide the calculating of rate compensating value KD first by real-time mixture moisture rate MI3, the actual amount of water to multiple tracking measurement points
FI1, adds the actual mass WI of compound to calculate the original tracking moisture rate MI1 of the multiple raw materials of correspondence, the raw material original with
Track moisture rate MI1 computing formula is：
Through Fuzzy Calculation module, the original tracking moisture rate MI1 and original moisture rate MI0 of raw material of multiple raw materials show that raw material is tracked
The correction output valve of moisture rate compensating value KD.
4. the control method that mixture of sintering machine according to claim 3 adds water, it is characterised in that the Fuzzy Calculation mould
Block include Fuzzy processing, fuzzy reasoning process, fuzzy rule base conciliate this four programs of Fuzzy Processing, multiple raw materials with
Track moisture rate compensating value KD is corresponded in the form of signal e and is obscured as E, is become after fuzzy reasoning process according to the fuzzy rule for determining
For variable U, processed by ambiguity solution afterwards and numerical value u, the numerical value u is reduced to for raw material tracking moisture rate compensating value KD.
5. the control method that mixture of sintering machine according to claim 4 adds water, it is characterised in that the raw material tracks water
Point rate compensating value KD has a moisture deviation of signal e, the excursion of the moisture deviation of signal e and true domain for [- emax,
Emax], its purpose domain x={-n ,-n+1 ..., 0 ... 3, n-1, n }；
Wherein, n value in the range of 0～emax, defines quantizing factor ke=n/emax,
When there is deviation signal ei, x=ke*ei can be tried to achieve.
6. the control method that the mixture of sintering machine according to any one of claim 3-5 adds water, it is characterised in that described
PID control system carries out mould also by the real-time moisture rate of compound of multiple tracking measurement points and the numerical value of real-time addition
Paste is processed and draws automatic correction value PD of former moisture Control deviation.
7. the control method that mixture of sintering machine according to claim 6 adds water, it is characterised in that the PID mould in step 3
The computing formula of amount of water setting value FI that fuzzy control system is calculated is：
Wherein, MI2：Compound Target moisture rate；WI：Raw materials quality；MI1：The original moisture rate of raw material；KD：Raw material tracks moisture
Rate compensating value；PD：The automatic correction value of moisture Control deviation.
8. the control method that mixture of sintering machine according to claim 6 adds water, it is characterised in that the moisture Control is inclined
Automatic correction value PD of difference is calculated after hybrid system operation 10-15 minute by PID Fuzzy control system, PID Fuzzy control system
The cycle of automatic correction value PD of computing moisture Control deviation is 3-5 minute.
9. the control method that mixture of sintering machine according to claim 8 adds water, it is characterised in that the PID mould
The control of -0.02-+0.02 is provided with process logical structure on fuzzy control system with regard to automatic correction value PD of moisture Control deviation
Dead band processed, to prevent the nominal error surge area correction in -0.02-+0.02 excessively frequent.
10. the control method that mixture of sintering machine according to claim 1 adds water, it is characterised in that the raw material is original
Moisture rate is drawn by hand dipping or the multiple raw material moisture instrument measurement measurements by arranging in traffic zone draw.
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| CN108133106A (en) * | 2017-12-21 | 2018-06-08 | 山东诺德能源科技有限公司 | A kind of method for the moisture that mixture of sintering machine is estimated according to amount of water |
| CN108133106B (en) * | 2017-12-21 | 2021-07-13 | 山东诺德能源科技有限公司 | Method for estimating moisture content of sintering machine mixture according to water addition amount |
| CN108152461A (en) * | 2017-12-26 | 2018-06-12 | 安徽润安信科检测科技有限公司 | A kind of fragrant yeast moisture monitoring priming apparatus and its control method |
| CN109988909A (en) * | 2019-04-28 | 2019-07-09 | 中冶长天国际工程有限责任公司 | A kind of material adjusting method and device for pelletizer |
| CN113447392A (en) * | 2020-03-27 | 2021-09-28 | 东北大学秦皇岛分校 | Calibration and verification method for sintering mixture moisture measuring device |
| CN112344728A (en) * | 2020-11-12 | 2021-02-09 | 山西晋南钢铁集团有限公司 | Yield increasing and consumption reducing method for stably controlling sintering end point |
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