CN106338499A - Element laser detection and analysis instrument and mineral element analysis method - Google Patents
Element laser detection and analysis instrument and mineral element analysis method Download PDFInfo
- Publication number
- CN106338499A CN106338499A CN201610794322.7A CN201610794322A CN106338499A CN 106338499 A CN106338499 A CN 106338499A CN 201610794322 A CN201610794322 A CN 201610794322A CN 106338499 A CN106338499 A CN 106338499A
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- 238000004458 analytical method Methods 0.000 title claims abstract description 40
- 238000001514 detection method Methods 0.000 title claims abstract description 35
- 239000002366 mineral element Substances 0.000 title claims abstract description 26
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 57
- 239000011707 mineral Substances 0.000 claims abstract description 57
- 238000001228 spectrum Methods 0.000 claims abstract description 38
- 230000003595 spectral effect Effects 0.000 claims abstract description 15
- 238000010183 spectrum analysis Methods 0.000 claims abstract description 8
- 230000001678 irradiating effect Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 16
- 238000003754 machining Methods 0.000 claims description 15
- 239000013307 optical fiber Substances 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000000470 constituent Substances 0.000 claims description 3
- 230000005284 excitation Effects 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 description 8
- 230000005251 gamma ray Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 241000931526 Acer campestre Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000628997 Flos Species 0.000 description 1
- YZCKVEUIGOORGS-IGMARMGPSA-N Protium Chemical compound [1H] YZCKVEUIGOORGS-IGMARMGPSA-N 0.000 description 1
- 241000720974 Protium Species 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000921 elemental analysis Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000013532 laser treatment Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 238000010223 real-time analysis Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/061—Sources
- G01N2201/06113—Coherent sources; lasers
Abstract
The invention discloses an element laser detection and analysis instrument and a mineral element analysis method. The element laser detection and analysis instrument comprises a conveying assembly, a laser device, a spectral analysis device and a computer, wherein the conveying assembly is used for carrying and moving a to-be-detected mineral; the laser device comprises a pulse laser and a laser processing device; the pulse laser is used for emitting laser and irradiating the laser which is processed by the laser processing device on the to-be-detected mineral on the conveying assembly; the spectral analysis device comprises a spectrograph and a spectrum collection assembly; the spectrum collection assembly is connected with the spectrograph, so that the spectrum collection assembly can collect a spectrum, which has corresponding mineral element information and is radiated by plasma stimulated by the surface of the to-be-detected mineral irradiated by the laser, and then transmits the spectrum to the spectrograph; the computer is connected with the spectrograph, so that the spectrograph can transmit the generated spectral response signal to the computer. According to the element laser detection and analysis instrument and the mineral element analysis method, a high-precision mineral element on-line analysis result can be obtained.
Description
Technical field
The present invention relates to a kind of element laser detection and analysis instrument and Mineral Elements Analysis method.
Background technology
At present, in most of mineral products industry, no matter be produce, storage or use, all mineral can be carried out point
Analysis detection.In mineral products, the number of each element content directly influences production, the service efficiency of product, according to Mineral Concentrations
Difference and the useful element banking system (island structure, chain structure) of mineral, real-time adjustment, optimized production process, are washing
Selecting in enrichment process can make ore dressing process more efficient by real-time adjustment production technology, improve the concentrate rate of recovery, reduce and throw
Tail；In mineral smelting process, then can improve efficiency, and by the detection to environment unfriendly type element, adjust
Absorption technique, can effectively be reclaimed to harmful element with least cost；In product operational phase, then can be by element
Detection, substandard product is rejected.Traditional element measuring method has analyze speed slowly, and technique is loaded down with trivial details it is impossible to realization exists
The defects such as line process control, often producing during enrichment uses in mineral has larger hysteresis quality, often results in the wave of resource
Take the pollution with environment.
The on-line analysis technology of the mineral element commonly used at present is x-ray fluorescent technique, neutron induced prompt gamma ray
Analytical technology and dual intensity gamma ray transmissive technology.X-ray fluorescent technique can only measure the element that atomic number is more than 11, to ore deposit
Carbon in thing, protium, nitrogen etc. cannot measure, and cause and labyrinth mineral can not be detected, and measure essence
Degree and sensitivity is not high.There is investment greatly in neutron induced prompt gamma ray analytical technology, radiation hazradial bundle is big partly to decline with radioactive source
Phase short shortcoming.And dual intensity gamma ray technology then cannot be carried out full elemental analysis, high cost simultaneously has potential safety hazard.Due to existing
These shortcomings, these technology are not widely used.
Content of the invention
The technical problem to be solved is the defect overcoming prior art, provides a kind of element laser detection and analysis
Instrument, it can obtain high-precision mineral element on-line analysis result.
In order to solve above-mentioned technical problem, the technical scheme is that a kind of element laser detection and analysis instrument, it wraps
Include:
Conveying assembly, described conveying assembly is used for carrying and mobile mineral to be measured；
Laser aid, described laser aid includes pulse laser and laser machining device, and described pulse laser is used for
On the mineral to be measured sending laser and exposing on conveying assembly after laser is processed by laser machining device；
Spectral analysis device, described spectral analysis device includes spectrometer and spectra collection assembly, described spectra collection group
Part is connected with spectrometer, so that the plasma that mineral surfaces to be measured after laser irradiates for the spectra collection assembly collection excite
The spectrum with corresponding mineral element information being given off, and pass it to spectrometer；
Computer, described computer is connected with described spectrometer, so that the spectral response signal transmission that spectrometer will generate
To computer.
Further, described conveying assembly includes belt conveyor, and described mineral to be measured are placed on belt conveyor.
Further for the spot diameter expanding the laser that described pulse laser sends, described laser machining device includes
For expanding the beam expanding lens of the spot diameter of the laser that described pulse laser sends.
Further, in order to by Laser Focusing, described laser machining device includes focus lamp.
Further for the direction of illumination by changing its laser, so that laser exposes to the ore deposit to be measured on conveying assembly
On thing, and the energy that laser is radiated at mineral surfaces can be made more to stablize and facilitate mounting and adjusting, described laser treatment
Device also includes changing the reflective microscope group of laser irradiating position, and the laser that described pulse laser sends first passes through beam expanding lens, gathers
Jiao Jingzai is radiated on the mineral to be measured on conveying assembly after reflective microscope group.
Further provide a kind of structure of specifically reflective microscope group, described reflective microscope group includes the first speculum and second
Speculum, just to the first speculum after laser light beam expanding lens that described pulse laser sends, focus lamp, then described first
Just to described second speculum, the laser that described second speculum reflects is radiated at conveying group to the laser that speculum reflects
On mineral to be measured on part.
Further, described beam expanding lens is concave lens, and described focus lamp is convex lens, and described pulse laser sends
Laser is introduced into concave lens and enters back into convex lens.
Further for making, the effective spectral information collecting is the strongest, and described spectra collection assembly includes concave reflection
Mirror, convex reflecting mirror, collimating mirror and optical fiber, the spectrum with corresponding mineral element information is gathered convex by concave mirror
On the speculum of face, then gather in collimating mirror by convex reflecting mirror, one end of described optical fiber is connected with described collimating mirror, described
The other end of optical fiber is connected with described spectrometer.
Further, the control signal of described pulse laser is connected with described computer, described pulse laser touch
Signalling output end is connected with described spectrometer.
Present invention also offers a kind of Mineral Elements Analysis method, its application element laser detection analytical instrument, method
Contain in step:
A () conveying assembly is by nation to be measured to detection zone；
B () sends laser using pulse laser, and expose to conveying group after laser is processed by laser machining device
On mineral to be measured on part, the surface excitation of now described mineral to be measured goes out plasma, plasma resonance go out with phase
The spectrum of the mineral element information answered is gathered and delivers to spectrometer by spectra collection assembly and is analyzed, the spectrum of output after analysis
Response signal gathers to computer；
C () in a computer, is modeled analyzing according to multiple spectral response signals, and the spectrum in certain time is rung
The constituent content that induction signal and this time period laboratory obtain carries out mathematics and compares analysis, sets up model；By continuously online
Run, using the spectral response obtaining every time signal as the input of model, real-time mineral element element is gone out by model analysis
Content.
Further, in described step (b), during the mineral to be measured that laser irradiates on conveying assembly, pass through
Conveying assembly drives the movement of mineral to be measured, the point position that conversion laser is got ready on mineral to be measured.
After employing technique scheme, the method for the present invention passes through directly to be erected at laser aid the upper of conveying assembly
Side, mineral to be measured are transported to the detection zone on conveying assembly incessantly by conveying assembly, pass through automatic multiple spot afterwards
Measurement, averaged spectrum response signal, it is established that the Mathematical Modeling of spectral response signal and Mineral Concentrations, finally utilizes this number
Learn model and on-line analysis is carried out to mineral element, thus obtaining high-precision online result, compared to other laser-induced breakdowns
Spectrum (libs) detection method, overcomes the problem of libs surface sampling representativeness difference, overcomes and gathers and processes the complicated problem of sample, phase
, in other online mineral element measuring methods, certainty of measurement is high, and does not have radiation source for ratio, invests little, small volume, convenient peace
Dress.
Brief description
Fig. 1 is the structural representation of the element laser detection and analysis instrument of the present invention.
Specific embodiment
In order that present disclosure is easier to be clearly understood, below according to specific embodiment and combine accompanying drawing, right
The present invention is described in further detail.
As shown in figure 1, a kind of element laser tests and analyzes instrument, it includes:
Conveying assembly, described conveying assembly is used for carrying and mobile mineral to be measured；Mineral to be measured on conveying assembly not between
Forfeit detection zone and the mineral to be measured after real-time analysis detection are sent；
Laser aid, described laser aid includes pulse laser and laser machining device, and described pulse laser is used for
On the mineral to be measured sending laser and exposing on conveying assembly after laser is processed by laser machining device；
Spectral analysis device, described spectral analysis device includes spectrometer and spectra collection assembly, described spectra collection group
Part is connected with spectrometer, so that the plasma that mineral surfaces to be measured after laser irradiates for the spectra collection assembly collection excite
The spectrum with corresponding mineral element information being given off, and pass it to spectrometer；
Computer, described computer is connected with described spectrometer, so that the spectral response signal transmission that spectrometer will generate
To computer.
As shown in figure 1, described conveying assembly includes belt conveyor 9, described mineral to be measured are placed on belt conveyor 9.
As shown in figure 1, described laser machining device includes the hot spot for expanding the laser that described pulse laser sends
The beam expanding lens of diameter, for focusing on the focus lamp of laser, described beam expanding lens is concave lens 1, and described focus lamp is convex lens
2, the laser that described pulse laser sends is introduced into concave lens 1 and enters back into convex lens 2.
As shown in figure 1, described laser machining device also includes changing the reflective microscope group of laser irradiating position, described pulse swashs
The laser that light device sends first passes through beam expanding lens and is radiated at the mineral to be measured on conveying assembly again after reflective microscope group with focus lamp
On, described reflective microscope group can include the first speculum 3 and the second speculum 4, the laser light that described pulse laser sends
Just to the first speculum 3 after beam expanding lens and focus lamp, the laser that then described first speculum 3 reflects is just anti-to described second
Penetrate mirror 4, the laser that described second speculum 4 reflects is radiated on the mineral to be measured on conveying assembly.Laser passes through to expand
After mirror, spot diameter is exaggerated, then by focus lamp by Laser Focusing, then faces and incide the first speculum 3, pass through
Incide after the reflection of the first speculum 3 on second speculum 4, then by the reflection of the second speculum 4, laser is irradiated to
So that laser incident angle can adjust on mineral to be measured, space is made to arrange convenient.
As shown in figure 1, described spectra collection assembly includes concave mirror 6, convex reflecting mirror 5, collimating mirror 7 and optical fiber 8,
Spectrum with corresponding mineral element information is gathered on convex reflecting mirror 5 by concave mirror 6, then passes through convex refractive
Mirror 5 gathers in collimating mirror 7, and one end of described optical fiber 8 is connected with described collimating mirror 7, the other end of described optical fiber 8 and described light
Spectrometer is connected.
As shown in figure 1, the control signal of described pulse laser is connected with described computer, described pulse laser
Trigger output end is connected with described spectrometer.
A kind of Mineral Elements Analysis method, it applies described element laser to test and analyze instrument, contains in the step of method:
A () conveying assembly is by nation to be measured to detection zone；
B () sends laser using pulse laser, and expose to conveying group after laser is processed by laser machining device
On mineral to be measured on part, the surface excitation of now described mineral to be measured goes out plasma, plasma resonance go out with phase
The spectrum of the mineral element information answered is gathered and delivers to spectrometer by spectra collection assembly and is analyzed, the spectrum of output after analysis
Response signal gathers to computer；
C () in a computer, is modeled analyzing according to multiple spectral response signals, and the spectrum in certain time is rung
The constituent content that induction signal and this time period laboratory obtain carries out mathematics and compares analysis, sets up model；By continuously online
Run, using the spectral response obtaining every time signal as the input of model, real-time mineral element element is gone out by model analysis
Content.
In described step (b), during the mineral to be measured that laser irradiates on conveying assembly, by conveying assembly
Drive the movement of mineral to be measured, the point position that conversion laser is got ready on mineral to be measured.
Described conveying assembly only needs to run without interruption, and it mineral to be measured is transported under detection zone and is detected, with
The operation of detection, the mineral to be measured detecting are transported to specified location (such as: floss hole) in real time.
In detection process, laser detection and conveying assembly are uninterrupted operation, by the spectral information in certain time
Arrange the Mineral Concentrations response signal as this time period.
The pulse laser of the present invention adopts nd:yag pulse laser, and optical maser wavelength is 1064nm, and pulsewidth is 5ns,
When detection, using energy, the laser for 90mj is excited to mineral to be measured and is passed through instantaneous high-temperature in mineral surfaces to be measured
Inspire plasma, plasma outwards launches the optical information with testing sample information, these optical informations pass through concave surface
After speculum 6 and the gathering of convex reflecting mirror 5, collimated mirror 7 is collected, and is subsequently sent in spectrometer by optical fiber 8, light exists
It is imaged and result is sent in spectrometer and processed to computer.
In the detection system, pulse laser and beam expanding lens, focus lamp, two speculums and conveying assembly are arranged in together
In one vertical plane, adjustment angle makes pulse laser light-emitting window just to beam expanding lens, focus lamp, and laser passes through beam expanding lens, gathers
After burnt mirror, just to the first speculum 3 center, the laser that the first speculum 3 reflects is just to the second speculum 4 for beam orthogonal
Center, the mineral surfaces that the laser that the second speculum 4 reflects directly is radiated on conveying assembly simultaneously produce plasma, etc.
The optical signal that gas ions emit collimated mirror 7 after concave mirror 6 and convex reflecting mirror 5 are assembled is collected, collimation
Mirror 7 is connected with spectrometer by optical fiber 8, and the light that the plasma emission collected out is carried sample message passes through optical fiber
8 are sent to spectrometer, and spectrometer controls through the output signal of pulse laser, after producing laser pulse certain time-delay,
Spectrum is sent to spectrometer after imaging by imaging when the weakest, the effective spectrum of radiation is the strongest, and conveying assembly is continuing simultaneously
Be constantly running, using the spectrum being collected in certain time as this period of time representative information.
Particular embodiments described above, to present invention solves the technical problem that, technical scheme and beneficial effect carry out
Further describe, be should be understood that the specific embodiment that the foregoing is only the present invention, be not limited to this
Invention, all any modification, equivalent substitution and improvement within the spirit and principles in the present invention, done etc., should be included in this
Within bright protection domain.
Claims (10)
1. a kind of element laser detection and analysis instrument is it is characterised in that it includes:
Conveying assembly, described conveying assembly is used for carrying and mobile mineral to be measured；
Laser aid, described laser aid includes pulse laser and laser machining device, and described pulse laser is used for sending
Laser and expose on conveying assembly after laser is processed by laser machining device mineral to be measured on；
Spectral analysis device, described spectral analysis device includes spectrometer and spectra collection assembly, described spectra collection assembly with
Spectrometer is connected, so that the plasma institute spoke that mineral surfaces to be measured after laser irradiates for the spectra collection assembly collection excite
The spectrum with corresponding mineral element information projecting, and pass it to spectrometer；
Computer, described computer is connected with described spectrometer, so that the spectral response signal transmission of generation is given meter by spectrometer
Calculation machine.
2. element laser according to claim 1 detection and analysis instrument it is characterised in that: described conveying assembly includes defeated
Send belt (9), described mineral to be measured are placed on belt conveyor (9).
3. element laser according to claim 1 detection and analysis instrument it is characterised in that: described laser machining device includes
For expand the laser that described pulse laser sends spot diameter beam expanding lens and for by the focus lamp of Laser Focusing.
4. element laser according to claim 3 detection and analysis instrument it is characterised in that: described beam expanding lens is concave lens
(1), described focus lamp be convex lens (2), the laser that described pulse laser sends be introduced into concave lens (1) enter back into convex
Face lens (2).
5. element laser according to claim 3 detection and analysis instrument it is characterised in that: described laser machining device also wraps
Include the reflective microscope group changing laser irradiating position, the laser that described pulse laser sends first passes through beam expanding lens, focus lamp warp again
It is radiated at after crossing reflective microscope group on the mineral to be measured on conveying assembly.
6. element laser according to claim 4 detection and analysis instrument it is characterised in that: described reflective microscope group includes first
Speculum (3) and the second speculum (4), just to first after the laser light beam expanding lens that described pulse laser sends and focus lamp
Speculum (3), the laser that then described first speculum (3) reflects is just to described second speculum (4), described second reflection
The laser that mirror (4) reflects is radiated on the mineral to be measured on conveying assembly.
7. element laser according to claim 1 detection and analysis instrument it is characterised in that: described spectra collection assembly includes
Concave mirror (6), convex reflecting mirror (5), collimating mirror (7) and optical fiber (8), the spectrum with corresponding mineral element information leads to
Cross concave mirror (6) to gather on convex reflecting mirror (5), then gather in collimating mirror (7) by convex reflecting mirror (5), institute
The one end stating optical fiber (8) is connected with described collimating mirror (7), and the other end of described optical fiber (8) is connected with described spectrometer.
8. element laser according to claim 1 detection and analysis instrument it is characterised in that: the control of described pulse laser
Input is connected with described computer, and the trigger output end of described pulse laser is connected with described spectrometer.
9. a kind of Mineral Elements Analysis method it is characterised in that: it applies element as any one of claim 1 to 8
Laser detection analytical instrument, contains in the step of method:
A () conveying assembly is by nation to be measured to detection zone；
B () sends laser using pulse laser, and expose on conveying assembly after laser is processed by laser machining device
Mineral to be measured on, the surface excitation of now described mineral to be measured goes out plasma, plasma resonance go out with corresponding
The spectrum of mineral element information is gathered and delivers to spectrometer by spectra collection assembly and is analyzed, the spectral response of output after analysis
Signals collecting is to computer；
C () in a computer, is modeled analyzing according to multiple spectral response signals, and the spectral response in certain time is believed
Number and the constituent content that obtains of this time period laboratory carry out mathematics and compare analysis, set up model；By continuous on-line operation,
Using the spectral response obtaining every time signal as the input of model, real-time Mineral Concentrations are gone out by model analysis.
10. Mineral Elements Analysis method according to claim 9 it is characterised in that: in described step (b), swash
During mineral to be measured on light irradiation conveying assembly, drive the movement of mineral to be measured by conveying assembly, conversion laser exists
The point position got ready on mineral to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610794322.7A CN106338499A (en) | 2016-08-31 | 2016-08-31 | Element laser detection and analysis instrument and mineral element analysis method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610794322.7A CN106338499A (en) | 2016-08-31 | 2016-08-31 | Element laser detection and analysis instrument and mineral element analysis method |
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| CN106338499A true CN106338499A (en) | 2017-01-18 |
Family
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|---|---|---|---|
| CN201610794322.7A Pending CN106338499A (en) | 2016-08-31 | 2016-08-31 | Element laser detection and analysis instrument and mineral element analysis method |
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| CN108723012A (en) * | 2018-07-18 | 2018-11-02 | 深圳市汇泽激光科技有限公司 | A kind of integrated laser cleaning electro-optical system |
| CN111359913A (en) * | 2019-12-06 | 2020-07-03 | 雷传栋 | Method for sorting ores through laser radar |
| CN113008873A (en) * | 2019-12-20 | 2021-06-22 | 雄贝(上海)科技有限公司 | Intelligent laser mineral identification method |
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| CN108723012A (en) * | 2018-07-18 | 2018-11-02 | 深圳市汇泽激光科技有限公司 | A kind of integrated laser cleaning electro-optical system |
| CN111359913A (en) * | 2019-12-06 | 2020-07-03 | 雷传栋 | Method for sorting ores through laser radar |
| CN113008873A (en) * | 2019-12-20 | 2021-06-22 | 雄贝(上海)科技有限公司 | Intelligent laser mineral identification method |
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