CN113447392B - Calibration and verification method for sintering mixture moisture measuring device - Google Patents
Calibration and verification method for sintering mixture moisture measuring device Download PDFInfo
- Publication number
- CN113447392B CN113447392B CN202010226663.0A CN202010226663A CN113447392B CN 113447392 B CN113447392 B CN 113447392B CN 202010226663 A CN202010226663 A CN 202010226663A CN 113447392 B CN113447392 B CN 113447392B
- Authority
- CN
- China
- Prior art keywords
- calibration
- measurement
- value
- drying
- weighing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
- G01N5/045—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder for determining moisture content
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
Abstract
The invention relates to the technical field of measurement and control of a metallurgical sintering mixed process, which can fill the blank of an industrial calibration and calibration standard and specification, in particular to a calibration and calibration method of a sintering mixture water content measuring device, which comprises a drying and weighing method, a worker/expert experience method and a big data analysis relative calibration method, wherein the three methods are combined, have complementary advantages and are based on a complete solution of scientific calculation and big data processing; the drying and weighing method is an intermittent measurement method, the result after comprehensive errors are eliminated can be used as a relative true value of the moisture content of the materials at the sampling point position to provide a reference value of a measurement reference for the calibration of the device, a worker/expert experience method is a fuzzy measurement method, the percentage content of the moisture of the mixture can be estimated in real time and is expressed by language variables or fuzzy mathematical values, the fuzzy measurement method is used for calibrating the goodness of fit of a large/small value or a slightly large/small value of the device for dynamic measurement, and a large data analysis relative calibration method is used for calibrating and calibrating continuous measurement values of the device.
Description
Technical Field
The invention relates to the technical field of measurement and control of a metallurgical sintering mixing process, in particular to a calibration and calibration method for a sintering mixture moisture measuring device.
Background
In the whole process of sintering production, the moisture of the mixture is an intermediate process variable of all measurement and control parameter sets of the production process, so that the accurate measurement and the effective control of the mixture are realized, and the method is always the research and development focus in the field; because the parameter can reflect the fluctuation of various material quantities in an upstream batching procedure in time, and has larger influence on the air permeability process parameter of a downstream sinter bed, the parameter further has close correlation on the operation of temperature/air quantity/machine speed in the sintering process and the quality of a final product; however, it is a difficult point to accurately measure the parameter, the method adopted in the production field is simple application of a drying and weighing method or a worker/expert experience method, the scientific research of the measurement error is often ignored in the use of the production field, the reliability of the result is confirmed only by human experience, the accuracy confirmation of the measured value is misdistinguished, the calibration and the verification of various mixture water content measuring devices are difficult to scientifically carry out due to the inevitable measurement error and the lack of scientific analysis to obtain the value of the error, and the process is in a production mode operated by the personal experience; the problem becomes a short plate which has great influence on production, and the improvement of production benefit is greatly influenced; there is a need for a scientific and reasonable method that can be applied in the field of production to serve as an industry standard and specification for calibration and verification of sinter mix moisture measuring devices.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a calibration and verification method for a sintering mixture water content measuring device, which can solve the problem that the calibration and verification of the mixture water content measuring device lack of industrial standards and specifications.
(II) technical scheme
In order to achieve the purpose, the calibration and verification method of the sintering mixture moisture measuring device comprises the following steps:
firstly, through intermittent measurement of a drying and weighing method, a result after comprehensive errors are eliminated is used as a relative true value of the moisture content of the material at a sampling point position, and a reference value of a measurement reference is provided for calibration of the device;
secondly, expressing the percentage content of the water in the current mixture by a worker/expert experience method through a language variable or fuzzy mathematical value, and dynamically measuring the goodness of fit of a large/small value or a slightly large/small value by a calibration device;
and finally, on the basis of a drying and weighing method and a worker/expert experience method, calibrating and checking the continuous measurement values of the device by using a big data analysis relative checking method, carrying out a relative dynamic measurement experiment on the site, acquiring experiment data, and carrying out scientific calculation and big data analysis to check the dynamic measurement accuracy and dynamic measurement trend goodness of fit of the device.
Preferably, the drying and weighing method is an intermittent measurement method and comprises a series of standard operation methods of manual sampling, sample preparation, weighing, drying, experimental record and scientific calculation.
Preferably, the worker/expert experience method is a fuzzy measurement method, which can estimate the percentage of moisture of the current mix in real time and express the percentage as a linguistic variable or fuzzy mathematical value.
(III) advantageous effects
Compared with the prior art, the invention provides a calibration and verification method for a sintered mixture moisture measuring device, which has the following beneficial effects: the calibration and verification method for the sintering mixture water content measuring device combines a drying and weighing method, a worker/expert experience method and a big data analysis relative verification method, has complementary advantages, and solves the problem that a feasible method which has scientific and reasonable property and can be applied in a production field is urgently needed to be used as an industrial standard and standard for calibration and verification of the sintering mixture water content measuring device in the calibration and verification of the sintering mixture water content measuring device on the production field based on a set of complete solution of scientific calculation and big data processing.
Drawings
FIG. 1 is a schematic view of the operation flow of the calibration and calibration method for the moisture measuring device of the sinter mix according to the present invention;
FIG. 2 is a table display of calibration and verification data Excel of the drying and weighing method of the present invention;
FIG. 3 is a table of records of worker/expert experience methods in the present invention;
FIG. 4 is a table showing the correspondence between the calculated average of the readings of the measuring device and the theoretical calculation and the results of the worker/expert experience in accordance with the present invention;
FIG. 5 is a graphical representation of theoretical calculations in the present invention versus average water addition and measurement device readings;
FIG. 6 is a graph of the recorded changes and fluctuations in the batch flow during the experiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
Referring to fig. 1-6, firstly, the stability of the production process is adjusted to make the material on the belt conveyor on site stable, the instantaneous flow fluctuation of the ingredients is as small as possible (generally less than 5%), the discharge port of the mixer is adjusted to make the material fall into the belt without large offset, and the material on the belt conveyor is shaped to basically meet the stable measurement condition; then, through the intermittent measurement of a drying and weighing method, the result after comprehensive errors are eliminated is taken as a relative true value of the moisture content of the material at the sampling point position, and a reference value of a measuring reference is provided for the calibration of the device; then, the percentage content of the water of the current mixture is expressed by language variable or fuzzy mathematical value by a worker/expert experience method, and the percentage content is used for dynamically measuring the goodness of fit of a large/small value or a slightly large/small value by a calibration device; finally, on the basis of a drying and weighing method and a worker/expert experience method, a big data analysis relative check method is used for calibrating and checking continuous measurement values of the device, relative dynamic measurement experiments are carried out on site, experiment data are obtained, and scientific calculation and big data analysis are carried out, so that the dynamic measurement accuracy and the dynamic measurement trend goodness of fit of the device can be checked.
The calibration and calibration method for the sinter mix moisture measuring device is further illustrated by the following more detailed examples according to the operation flow (experimental data are given as examples for reference):
1. drying and weighing method
Firstly, confirming calibration equipment, wherein the set temperature of a drying box is adjusted to be 105 ℃, the actual control temperature requirement is limited within the fluctuation range of 2 ℃ and is kept stable for a long time, if the maximum weighing of an electronic balance is 110 g, the calibration division value is 0.001 g, the use environment has no vibration, and the adjusted horizontal position is ensured, then, preprocessing a sample box and numbering the sample box as No. 1 to No. 9, drying the sample box and then weighing, then, sampling about 3kg of uniformly mixed sintering mixture, and loading the uniformly mixed sintering mixture into the sample box according to the weight of about 100g of each sample; weighing the sample box added with the wet materials to obtain the total weight; thirdly, putting the sample box into an oven for 5 hours; fourthly, taking out the materials to carry out primary weighing, secondary weighing and tertiary weighing; the operation process is to prevent the moisture loss of the wet material or the moisture absorption of the dry material, finally, the data is filled into an Excel table, the average value and the standard deviation, the maximum value, the minimum value and the intermediate value are calculated, as shown in figure 2, the average value is used as a measuring result and can be used as a relative true value of the water content of the material at the sampling point position, the relative true value is provided for a worker/expert experience method and a big data analysis relative verification method as a reference value of a measuring standard, the standard deviation is used as a research basis of the dispersity and the measuring error of the measured value, the maximum value, the minimum value and the intermediate value are used as the basis of the value distribution and the value limit range of the measured value, the quantity of the sample boxes and the weighing allowance of the second time and the third time can be scientifically determined according to the research result of the measurement error, if two or more of the results obtained from a single sample calculation are the same value, it should be analyzed whether there is a problem of insufficient resolution.
2. Worker/expert experience method
And (3) estimating and determining the percentage content of the water in the mixture in real time by the experience of workers/experts according to the reference of figure 3, recording the percentage content by using linguistic variables or fuzzy mathematical values, and analyzing an experimental result to give out the goodness of fit of the dynamic measurement large/small value or slightly large/slightly small value of the checking device.
3. Big data analysis relative checking method (operation step)
(1) The material mixing amount on the sintering production process is basically stable, and the total material mixing amount is 800 tons/hour;
(2) the mixture at the outlet of the mixer on the belt conveyor is basically stable, and the water adding flow is 18 tons/hour;
(3) sampling the mixture, and obtaining the third average value of the water content of the mixture under the current working condition of 6.88% by adopting a drying and weighing method;
(4) taking the above-mentioned work as reference, increasing or decreasing the water-adding flow by stages, every time 1 ton/hour, for total ingredient amount 800 ton/hour, calculating the relative water content increase or decrease by 0.125% every time, and using it as theoretical calculation value of water content of mixture material;
(5) the experiment is started, water is reduced by mixing in stages, each time is reduced by 1 ton/hour, the mixture is stabilized for more than 10 to 15 minutes, water is reduced again, and water is reduced again until the mixture is reduced to 14 tons/hour and is reduced for 10 to 15 minutes;
(6) then, adding water to the mixture in stages, wherein the water flow is increased by 1 ton/h each time and is stabilized for more than 10 to 15 minutes, adding water again, waiting again, adding water again, and waiting again until the water flow reaches 23 tons/h and the water flow reaches 10 to 15 minutes; meanwhile, when the step (5) and the step (6) are carried out in stages, big continuous water measuring value data of the water measuring device are obtained, and a measuring result represented by a linguistic variable or fuzzy mathematical value is obtained in real time by adopting a worker/expert experience method and is recorded;
(7) finally, the test is finished after the test is recovered to 18 tons/hour of the initial state;
(8) segmenting the acquired big data by adding water, calculating the average value, corresponding to the theoretical calculated value and the result obtained by worker/expert experience to form a list, as shown in figure 4, wherein the recording curve is inverted S, as shown in figure 5, and further obtaining the verification conclusion of the dynamic measurement accuracy and the dynamic measurement trend goodness of fit of the device through scientific analysis;
(9) considering the influence of the change and fluctuation of the ingredient flow rate on the experiment during the experiment, the recording curve is shown in figure 6 and can be used for further scientific calculation and big data analysis processing.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. A calibration and verification method for a sinter mixture moisture measurement device is characterized by comprising the following steps: the method comprises the following steps:
firstly, through intermittent measurement of a drying and weighing method, a result after comprehensive errors are eliminated is used as a relative true value of the moisture content of the material at a sampling point position, and a reference value of a measurement reference is provided for calibration of the device;
secondly, expressing the percentage content of the water in the current mixture by a worker/expert experience method through a language variable or fuzzy mathematical value, and dynamically measuring the goodness of fit of a large/small value or a slightly large/small value by a calibration device;
and finally, on the basis of a drying and weighing method and a worker/expert experience method, calibrating and checking the continuous measurement values of the device by using a big data analysis relative checking method, carrying out a relative dynamic measurement experiment on the site, acquiring experiment data, and checking the dynamic measurement accuracy and the dynamic measurement trend goodness of fit of the device through scientific calculation and big data analysis.
2. The sinter mix moisture measurement device calibration verification method of claim 1, wherein: the drying and weighing method is an intermittent measuring method and comprises a series of standard operation methods of manual sampling, sample preparation, weighing, drying, experimental recording and scientific calculation.
3. The sinter mix moisture measurement device calibration verification method of claim 1, wherein: the worker/expert experience method is a fuzzy measurement method, can estimate the percentage content of the water in the current mixture in real time and represents the percentage content by linguistic variables or fuzzy mathematical values.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010226663.0A CN113447392B (en) | 2020-03-27 | 2020-03-27 | Calibration and verification method for sintering mixture moisture measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010226663.0A CN113447392B (en) | 2020-03-27 | 2020-03-27 | Calibration and verification method for sintering mixture moisture measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113447392A CN113447392A (en) | 2021-09-28 |
| CN113447392B true CN113447392B (en) | 2022-08-30 |
Family
ID=77807727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010226663.0A Active CN113447392B (en) | 2020-03-27 | 2020-03-27 | Calibration and verification method for sintering mixture moisture measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113447392B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2056111A1 (en) * | 1990-11-20 | 1992-05-27 | Praxair Technology, Inc. | Diagnostic gas monitoring process |
| CN101995891A (en) * | 2010-09-17 | 2011-03-30 | 南京工业大学 | Method for online analysis of water content of solid master batch recovery system in aromatic acid production |
| CN110543108A (en) * | 2019-09-20 | 2019-12-06 | 常州英集动力科技有限公司 | Heating system measurement data correction method and system based on mechanism model prediction |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86100862B (en) * | 1986-02-07 | 1988-06-08 | 东北工学院 | Fast indicator of moisture content of granular substances by principle of loss-in-weight |
| JP2010091376A (en) * | 2008-10-07 | 2010-04-22 | Nippon Steel Corp | Apparatus for measuring moisture content of sintering raw material |
| CN101477378B (en) * | 2008-12-26 | 2011-07-13 | 首钢总公司 | Humidity control method for mixture used in sintering production |
| CN102183474A (en) * | 2011-02-15 | 2011-09-14 | 北京首钢自动化信息技术有限公司 | Calibration method of infrared moisture meter |
| CN102914499B (en) * | 2012-11-02 | 2015-03-18 | 中冶长天国际工程有限责任公司 | Method and device for detecting moisture in mixed material during sintering process |
| CN106444361B (en) * | 2016-11-29 | 2019-08-30 | 北京金自天正智能控制股份有限公司 | A kind of mixture of sintering machine adds the control method of water |
| CN108663280B (en) * | 2017-03-27 | 2024-04-05 | 中冶长天国际工程有限责任公司 | Online detection device and detection method for water content of bulk material |
| CN110567836B (en) * | 2019-08-06 | 2022-07-26 | 河南中烟工业有限责任公司 | Method and system for rapidly checking and determining tobacco shred online moisture meter |
-
2020
- 2020-03-27 CN CN202010226663.0A patent/CN113447392B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2056111A1 (en) * | 1990-11-20 | 1992-05-27 | Praxair Technology, Inc. | Diagnostic gas monitoring process |
| CN101995891A (en) * | 2010-09-17 | 2011-03-30 | 南京工业大学 | Method for online analysis of water content of solid master batch recovery system in aromatic acid production |
| CN110543108A (en) * | 2019-09-20 | 2019-12-06 | 常州英集动力科技有限公司 | Heating system measurement data correction method and system based on mechanism model prediction |
Non-Patent Citations (2)
| Title |
|---|
| Real-time moisture control in sintering process using offline-online NARX neural networks;Yushan Jiang;《Neurocomputing》;20190424;第209-215页 * |
| 烧结混合料水分检测及智能控制系统;裴珍;《东北大学学报》;19980630;第290-292页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113447392A (en) | 2021-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6227039B1 (en) | System and method for controlling concrete production | |
| US5948970A (en) | System and method for controlling concrete production | |
| US8534118B2 (en) | Process and apparatus for quality control of a process for producing concrete articles | |
| CN108126988B (en) | Bar minus deviation On-line Measuring Method and system | |
| EP3317058B1 (en) | Systems and methods for monitoring calibration of moisture sensors | |
| CN111983967B (en) | Intelligent system and control method for controlling quality of molding sand in foundry | |
| CN108593055B (en) | Online automatic calibration method and system for pulverized coal mass flow meter | |
| CN106919127B (en) | Material level detection method based on software virtual technology | |
| CN113447392B (en) | Calibration and verification method for sintering mixture moisture measuring device | |
| CN105675526A (en) | Method and device for detecting spreading rate of papermaking-method reconstituted tobacco product | |
| KR20150006601A (en) | Integrated network management system for amendment water cement ratio by metering sand moisture | |
| CN104760714B (en) | A kind of stock product packed weight control method | |
| CN105547447B (en) | A kind of Coriolis scale method for detecting accuracy and device based on material experiment | |
| CN110806256B (en) | Online real-time calculation and judgment method for electronic belt scale | |
| CN106368103B (en) | Aggregate secondary measurement method based on crucial sieve | |
| CN103605323B (en) | The Discrete Control Method of Chemical Manufacture and device | |
| JP6542837B2 (en) | Method of measuring air content of fresh concrete and fresh concrete manufacturing facility | |
| CN211373814U (en) | Precision detection device and humectant preparation system | |
| Ignaszak et al. | Effectiveness of SCADA systems in control of green sands properties | |
| CN112345056A (en) | Method for calibrating and verifying precision of decrement scale by substitute | |
| DE10046491C1 (en) | Process, for quality control and assurance of casting molds made from clay-bound molding materials, comprises using the compression forces produced by moving the molding materials during compression of the molding materials using a sensor | |
| CN114872196B (en) | Intelligent regulating and controlling method for current of stirrer | |
| JP2005283363A (en) | Method to measure the amount of water except for water absorption of aggregate of ready-mixed concrete | |
| CN113189295A (en) | Sulfur-containing standard substance and preparation method and application thereof | |
| CN113219148A (en) | Carbon-containing standard substance and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |