CN102230872A - Device and method for on-line testing of grade of magnetic iron in flowing ore pulp - Google Patents
Device and method for on-line testing of grade of magnetic iron in flowing ore pulp Download PDFInfo
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- CN102230872A CN102230872A CN 201010187666 CN201010187666A CN102230872A CN 102230872 A CN102230872 A CN 102230872A CN 201010187666 CN201010187666 CN 201010187666 CN 201010187666 A CN201010187666 A CN 201010187666A CN 102230872 A CN102230872 A CN 102230872A
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Abstract
The invention relates to a device and method for on-line testing of grade of magnetic iron in flowing ore pulp. The device provided by the invention comprises a non-magneto-conductivity pipeline for conveying magnetic iron ore pulp, two groups of mutual inductors, an impulse current generator, a magnetization intensity detector and a concentration detector. The device is characterized in that: the two groups of mutual inductors are respectively wound on the outside of the non-magneto-conductivity pipeline for conveying magnetic iron ore pulp; the output terminal of the impulse current generator is connected with the mutual inductor I; the magnetization intensity detector is connected with the mutual inductor II; the concentration detector is configured on the non-magneto-conductivity pipeline for conveying magnetic iron ore pulp, and the input terminal of the impulse current generator, the output terminal of the magnetization intensity detector and the concentration detector are connected with a computer respectively through interface modules. The device for on-line testing has the advantages of simple structure, good stability and reliability and high work efficiency and is applicable to the techniques for milling of magnetic iron ores.
Description
Technical field
The present invention relates to the pick-up unit of the Armco magnetic iron grade of the mobile ore pulp that produces in the magnetic iron ore ore dressing process, the flow device and the detection method thereof of Armco magnetic iron grade of ore pulp of the online detection that especially is applicable to the Armco magnetic iron grade of the ore pulp that flows in the pipeline.
Background technology
At present, the main method of the Armco magnetic iron grade of mensuration iron ore is a chemical analysis method.Chinese patent CN10626000 and 200420016292.X once disclosed two kinds of magnetic iron measurers, a kind of employing electromagnetic induction method, the another kind of mechanics method that adopts, two kinds of methods are the static measurement mode, can not adapt to kinetic measurement, limit its range of application in the reality.Chinese patent CN101614699 disclosed the method for the Armco magnetic iron content of kinetic measurement massive iron ore, though application electromagnetic induction principle, realize the Armco magnetic iron content of detection of dynamic massive iron ore, but the Armco magnetic iron content in the iron ore slurry that can not online detection of dynamic flows, its application is limited to.In the existing documents and materials, the online dynamic testing method of full iron grade of mobile iron ore slurry there are fluorescence detection and gamma-rays detection method, but fluorescence detection and the gamma-rays detection method Armco magnetic iron grade in can not the mobile iron ore slurry of online detection of dynamic; The energy spectrum detection method can detect the Armco magnetic iron grade, but can only be Static Detection, can not realize online detection of dynamic.It all is detected element or compound to be carried out the characteristic energy spectrum detect and spectrum analysis that fluorescence detection, gamma-rays detection method and energy spectrum detect ratio juris, with the content that obtains detected element or compound what.In existing documents and materials, do not see the on-line measuring device of the Armco magnetic iron grade in the iron ore slurry that in carrying the pipeline outside measuring channel of iron ore slurry, flows as yet at present.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structure, stability, good reliability, and high efficiency contain the flow Armco magnetic iron product level detecting apparatus of ore pulp of online detection on the ore slurry pipeline of magnetic iron ore in conveying.
A further object of the present invention provides a kind of device and detection method thereof that adopts the Armco magnetic iron grade of the mobile ore pulp of online detection.
The objective of the invention is to realize by following technical proposals:
The device of the Armco magnetic iron grade of the mobile ore pulp of a kind of online detection of the present invention, comprise and carry the non-magnetic pipeline that contains the magnetic iron ore ore pulp, mutual inductor, impulse current generator, the magnetic induction density measuring instrument, concentration detects meter, it is characterized in that described mutual inductor is two groups, be mutual inductor I and mutual inductor II, two groups of mutual inductors are wrapped in respectively carries the non-magnetic pipeline outside that contains the magnetic iron ore ore pulp, described impulse current generator output terminal is connected with the mutual inductor I, described magnetic induction density measuring instrument is connected with the mutual inductor II, described concentration detects to count to be installed in to carry and contains on the non-magnetic pipeline of magnetic iron ore ore pulp its impulse current generator input end, the output terminal of magnetic induction density measuring instrument and concentration detect score and are not connected with computing machine by interface module.
The Device Testing method of the Armco magnetic iron grade of the mobile ore pulp of the online detection of employing of the present invention is characterized in that comprising the following steps:
1) when ore pulp flows in conveying contains the non-magnetic pipeline of magnetic iron ore ore pulp to stablize flow velocity, impulse current generator regularly sends pulse current to coil, ore pulp serves as magnetic conductor, then portion produces induced field current in coil, the induced field current value that is produced when measuring ore pulp by telefault, this induced field current causes the variation of line inner magnet induction or magnetic flux, and by being installed in the ore pulp weight concentration in the concentration detection meter synchro measure pipeline on the pipeline, set up the ore pulp weight concentration of detected ore pulp and the corresponding curve map of inductance or magnetic induction density detected value
2) with after the detected value arrangement, the conversion of proven pulp density and the corresponding curve map of detection limit feeds computing machine through interface module respectively and carries out data processing, can obtain the Armco magnetic iron grade of detected ore pulp.
Principle of work of the present invention: mutual inductor is wrapped in the outside of carrying the non-magnetic pipeline that contains the magnetic iron ore ore pulp, when the ore pulp that contains ferromagnetic mineral flows in the non-magnetic pipeline to stablize flow velocity, looks the magnetic conductor that this pipeline is a mutual inductor.When the pulse current of specified intensity passes through coil, according to electromagnetic induction principle, then in mutual inductor, produce induced field current or the inductance value of mutual inductor is changed, promptly the magnetic induction density of mutual inductor changes.When in the non-magnetic pipeline during no ore pulp, then the magnetic induction density of mutual inductor is a definite value; When having ore pulp to flow in the non-magnetic pipeline, then the magnetic induction density of mutual inductor is a changing value on the aforementioned basis of valuation.By detecting the induced field current that mutual inductor produces, or inductance value, or the changing value of magnetic induction density, and the ore pulp weight concentration in the synchro measure pipeline, the conversion of proven pulp density and the corresponding curve map of detection limit can obtain the Armco magnetic iron grade of detected ore pulp.There are two factors that detection limit is changed, the one, the variation of the Armco magnetic iron grade of the ore pulp that flows in the pipeline; The 2nd, the weight concentration of the ore pulp that flows in the pipeline changes.Therefore, flow in the pipeline design considerations of Armco magnetic iron grade on-line detection device of ore pulp is to flow in the pipeline that the Armco magnetic iron grade of ore pulp changes and the variation of ore pulp weight concentration causes that the detection limit of pick-up unit changes.
Mathematical model: the Armco magnetic iron grade=f of the ore pulp that flows in the pipeline (B, D)
B---detection limit wherein;
D---in the sense cycle, the weight concentration of the ore pulp that in pipeline, flows.
Advantage of the present invention is: according to electromagnetic induction principle, then produce induced field current or the inductance value of mutual inductor is changed in mutual inductor, promptly the magnetic induction density of mutual inductor changes.When having ore pulp to flow in the non-magnetic pipeline, then the magnetic induction density of mutual inductor changes, by detecting the induced field current that mutual inductor produces, or inductance value, or the changing value of magnetic induction density, and the ore pulp weight concentration in the synchro measure pipeline, the conversion of proven pulp density and the corresponding curve map of detection limit can record the Armco magnetic iron grade of detected ore pulp.This on-line measuring device is simple in structure, and stability, good reliability, and high efficiency are particluarly suitable for using in the magnetic iron ore ore-dressing technique.
Description of drawings
Fig. 1 is the Armco magnetic iron grade on-line detection device theory structure synoptic diagram of the mobile ore pulp of invention.
Fig. 2 is the corresponding curve map with detected value of Armco magnetic iron grade ore pulp weight concentration under rigid condition.
Fig. 3 is the corresponding curve map with detected value of Armco magnetic iron grade ore pulp weight concentration under different condition.
Embodiment
Below in conjunction with description of drawings the specific embodiment of the present invention.
As shown in Figure 1, the device of the Armco magnetic iron grade of the mobile ore pulp of online detection of the present invention, comprise and carry the non-magnetic pipeline 2 that contains the magnetic iron ore ore pulp, mutual inductor, impulse current generator 6, magnetic induction density measuring instrument 8, concentration detects meter 7, it is characterized in that described mutual inductor is two groups, be mutual inductor I 4 and mutual inductor II 5, two groups of mutual inductors are wrapped in respectively carries non-magnetic pipeline 2 outsides that contain the magnetic iron ore ore pulp, described impulse current generator 6 output terminals are connected with mutual inductor I 4, described magnetic induction density measuring instrument 8 is connected with mutual inductor II 5, described concentration detection meter 7 is installed in to carry and contains on the non-magnetic pipeline 2 of magnetic iron ore ore pulp its impulse current generator input end, the output terminal of magnetic induction density measuring instrument 8 and concentration detect meter 7 and are connected with computing machine 9 by interface module respectively.
The present invention adopts the Device Testing method of the Armco magnetic iron grade of the mobile ore pulp of online detection, it is characterized in that comprising the following steps:
1) when ore pulp 1 flows in conveying contains the non-magnetic pipeline 2 of magnetic iron ore ore pulp to stablize flow velocity, impulse current generator 6 regularly sends pulse current to coil, ore pulp serves as magnetic conductor, then portion produces induced field current in coil, the induced field current value that is produced when measuring ore pulp by telefault, this induced field current causes the variation of line inner magnet induction or magnetic flux, and by being installed in the ore pulp weight concentration in the concentration detection meter 7 synchro measure pipelines on the non-magnetic pipeline 2, set up the ore pulp weight concentration of detected ore pulp and the corresponding curve map of inductance or magnetic induction density detected value
2) with after the detected value arrangement, the conversion of proven pulp density and the corresponding curve map of detection limit feeds computing machine through interface module respectively and carries out data processing, can obtain the Armco magnetic iron grade of detected ore pulp.
Mutual inductor of the present invention is wrapped in the outside of non-magnetic pipeline 2, when the ore pulp 1 that contains ferromagnetic mineral flows in non-magnetic pipeline 2 to stablize flow velocity, looks the magnetic conductor that this pipeline is a mutual inductor.When the pulse current of specified intensity passes through coil, according to electromagnetic induction principle, then in mutual inductor, produce induced field current or the inductance value of mutual inductor is changed, promptly the magnetic induction density of mutual inductor changes.When having ore pulp to flow in the non-magnetic pipeline, then the magnetic induction density of mutual inductor changes, by detecting the induced field current that mutual inductor produces, or inductance value, or the changing value of magnetic induction density, and the ore pulp weight concentration in the synchro measure pipeline, the conversion of proven pulp density and the corresponding curve map of detection limit can obtain the Armco magnetic iron grade of detected ore pulp.Fig. 2 shows the corresponding curve of the ore pulp weight concentration of setting up detected ore pulp under the different condition and detected value.Fig. 3 shows the many groups sample ore that adopts different Armco magnetic iron grades, in pipeline under the constant condition of ore pulp flowing velocity, by adjusting different ore pulp weight concentrations, respectively each group sample ore is detected its induced field current under Different Weight concentration or the size of inductance or magnetic induction density, after the detected value arrangement, obtain the ore pulp weight concentration of this group sample ore and the calibration map of detected value.After the calibration curve of organizing the ore pulp weight concentration of sample ore and detected value merged more, obtain the ore pulp weight concentration in the Armco magnetic iron grade interval range and the calibration curve picture group of detected value.Detected value between adjacent two calibration curves can adopt interpolation calculation.
Pick-up unit of the present invention is simple in structure, especially is fit to magnetic iron ore mining processing industry rig-site utilization.
Claims (2)
1. the online detection device of Armco magnetic iron grade of ore pulp that flows, comprise and carry the non-magnetic pipeline that contains the magnetic iron ore ore pulp, mutual inductor, impulse current generator, the magnetic induction density measuring instrument, concentration detects meter, it is characterized in that described mutual inductor is two groups, be mutual inductor I and mutual inductor II, two groups of mutual inductors are wrapped in respectively carries the non-magnetic pipeline outside that contains the magnetic iron ore ore pulp, described impulse current generator output terminal is connected with the mutual inductor I, described magnetic induction density measuring instrument is connected with the mutual inductor II, described concentration detects meter and is installed in the non-magnetic pipeline that conveying contains the magnetic iron ore ore pulp, its impulse current generator input end, the output terminal of magnetic induction density measuring instrument and concentration detect score and are not connected with computing machine by interface module.
2. a Device Testing method that adopts the Armco magnetic iron grade of the mobile ore pulp of online detection according to claim 1 is characterized in that comprising the following steps:
1) when ore pulp flows in conveying contains the non-magnetic pipeline of magnetic iron ore ore pulp to stablize flow velocity, impulse current generator regularly sends pulse current to coil, ore pulp serves as magnetic conductor, then portion produces induced field current in coil, the induced field current value that is produced when measuring ore pulp by telefault, this induced field current causes the variation of line inner magnet induction or magnetic flux, and by being installed in the ore pulp weight concentration in the concentration detection meter synchro measure pipeline on the pipeline, set up the ore pulp weight concentration of detected ore pulp and the corresponding curve map of inductance or magnetic induction density detected value
2) with after the detected value arrangement, the conversion of proven pulp density and the corresponding curve map of detection limit feeds computing machine through interface module respectively and carries out data processing, can obtain the Armco magnetic iron grade of detected ore pulp.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105983480A (en) * | 2015-02-27 | 2016-10-05 | 丹东东方测控技术股份有限公司 | Method for measuring position of concentrate deposit in magnetic dewatering tank in real time |
| CN106442704A (en) * | 2016-09-29 | 2017-02-22 | 哈尔滨理工大学 | System and method for fast measuring iron content in magnetite concentrate |
| CN106483167A (en) * | 2015-11-25 | 2017-03-08 | 湖南恒光化工有限公司 | A kind of Iron concentrate grade detection method |
| CN106645296A (en) * | 2016-12-27 | 2017-05-10 | 华北理工大学 | Iron ore grade measurement method and system |
| CN108627567A (en) * | 2017-10-27 | 2018-10-09 | 中国矿业大学 | A kind of online sensing detection device of mining emulsion density |
| CN109443844A (en) * | 2018-12-19 | 2019-03-08 | 哈尔滨理工大学 | A kind of sampling pulp and Iron grade signal pickup assembly and method |
| CN109444176A (en) * | 2018-11-29 | 2019-03-08 | 水利部交通运输部国家能源局南京水利科学研究院 | Concrete void depth detection method under a kind of steel shell |
| CN112378989A (en) * | 2020-12-08 | 2021-02-19 | 鞍钢集团矿业有限公司 | Online detection device and method for magnetic ore pulp concentration |
| CN113552510A (en) * | 2021-06-29 | 2021-10-26 | 云南大红山管道有限公司 | Magnetism increasing experimental device and method for iron ore concentrate pulp |
| CN113567506A (en) * | 2021-07-23 | 2021-10-29 | 国网天津市电力公司电力科学研究院 | Nondestructive testing method for steel fiber mixing amount in concrete |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105983480A (en) * | 2015-02-27 | 2016-10-05 | 丹东东方测控技术股份有限公司 | Method for measuring position of concentrate deposit in magnetic dewatering tank in real time |
| CN106483167A (en) * | 2015-11-25 | 2017-03-08 | 湖南恒光化工有限公司 | A kind of Iron concentrate grade detection method |
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| CN108627567A (en) * | 2017-10-27 | 2018-10-09 | 中国矿业大学 | A kind of online sensing detection device of mining emulsion density |
| CN108627567B (en) * | 2017-10-27 | 2021-09-07 | 中国矿业大学 | Mining emulsion concentration on-line sensing detection device |
| CN109444176A (en) * | 2018-11-29 | 2019-03-08 | 水利部交通运输部国家能源局南京水利科学研究院 | Concrete void depth detection method under a kind of steel shell |
| CN109443844A (en) * | 2018-12-19 | 2019-03-08 | 哈尔滨理工大学 | A kind of sampling pulp and Iron grade signal pickup assembly and method |
| CN109443844B (en) * | 2018-12-19 | 2024-04-19 | 哈尔滨理工大学 | Ore pulp sampling and iron grade signal acquisition device and method |
| CN112378989A (en) * | 2020-12-08 | 2021-02-19 | 鞍钢集团矿业有限公司 | Online detection device and method for magnetic ore pulp concentration |
| CN113552510A (en) * | 2021-06-29 | 2021-10-26 | 云南大红山管道有限公司 | Magnetism increasing experimental device and method for iron ore concentrate pulp |
| CN113567506A (en) * | 2021-07-23 | 2021-10-29 | 国网天津市电力公司电力科学研究院 | Nondestructive testing method for steel fiber mixing amount in concrete |
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Application publication date: 20111102 |