CN109975274A - A kind of blast furnace molten iron silicon content on-line quick detection device - Google Patents
A kind of blast furnace molten iron silicon content on-line quick detection device Download PDFInfo
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- CN109975274A CN109975274A CN201910304147.2A CN201910304147A CN109975274A CN 109975274 A CN109975274 A CN 109975274A CN 201910304147 A CN201910304147 A CN 201910304147A CN 109975274 A CN109975274 A CN 109975274A
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- 238000001514 detection method Methods 0.000 title claims abstract description 37
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 title claims abstract description 29
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 70
- 229910052742 iron Inorganic materials 0.000 claims abstract description 35
- 230000003287 optical effect Effects 0.000 claims abstract description 31
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims description 18
- 239000007789 gas Substances 0.000 claims description 16
- 238000001228 spectrum Methods 0.000 claims description 12
- 230000003595 spectral effect Effects 0.000 claims description 11
- 239000000428 dust Substances 0.000 claims description 10
- 239000013307 optical fiber Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 230000005284 excitation Effects 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 206010020843 Hyperthermia Diseases 0.000 claims description 4
- 230000036031 hyperthermia Effects 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000004445 quantitative analysis Methods 0.000 claims description 3
- 229910001018 Cast iron Inorganic materials 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000005422 blasting Methods 0.000 claims description 2
- 230000008859 change Effects 0.000 claims description 2
- 230000001934 delay Effects 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- 238000005272 metallurgy Methods 0.000 claims description 2
- 238000010183 spectrum analysis Methods 0.000 claims description 2
- 229910010293 ceramic material Inorganic materials 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 230000000644 propagated effect Effects 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- 238000004458 analytical method Methods 0.000 abstract description 9
- 238000002536 laser-induced breakdown spectroscopy Methods 0.000 abstract description 6
- 238000002360 preparation method Methods 0.000 abstract description 4
- 230000007423 decrease Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000295 emission spectrum Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001637 plasma atomic emission spectroscopy Methods 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000921 elemental analysis Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000608 laser ablation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 239000000126 substance Substances 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- 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
- G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
-
- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N2021/0106—General arrangement of respective parts
- G01N2021/0112—Apparatus in one mechanical, optical or electronic block
Abstract
The present invention provides a kind of blast furnace molten iron silicon content on-line quick detection device, belongs to metallurgical melt composition detection field.The device includes pulse laser, spectrometer and photodetector, sequence controller, coaxially acquires the chief components such as optical path, molten iron on-line period equipment and computer, on-line quick detection carried out to molten iron silicon content by laser induced breakdown spectroscopy, feature be without sample preparation, analysis speed is fast and analysis frequency is high.The analysis time of iron-smelter molten iron silicon content can be reduced significantly through the invention, increase the detection frequency of molten iron silicon content, realize the real time monitoring of molten iron silicon content, blast furnace operating parameter is adjusted in time to be conducive to blast furnace section chief, blast furnace molten iron silicon content is reduced and maintains reduced levels.The present invention is conducive to iron and steel enterprise and further decreases production cost, energy-saving and emission-reduction, for realizing that iron and steel enterprise's intelligence and green production have substantial worth.
Description
Technical field
The present invention relates to metallurgical melt composition detection technical fields, and it is quick online to particularly relate to a kind of blast furnace molten iron silicon content
Detection device.
Background technique
Blast furnace low silicon smelting is the ironmaking new technology that 20 th century laters propose, reduces molten iron silicon content and advantageously reduces
Ton iron energy consumption and the steel-making quantity of slag, at present examine molten iron silicon content by way of offline inspection in iron and steel enterprise's ironmaking processes
Survey, specific practice is: when blast furnace casting, blast-furnace man uses sample bale-out molten iron sample in skimming tool exit, to molten iron sample in sky
After being solidified in gas, sample is sent to spectrum laboratory and is analyzed, wherein also needing to carry out grinding process, spectrum chemical examination to sample in advance
Room carries out elemental analysis to molten iron sample using spark direct-reading spectrometer, finally detects engineer for result and feeds back to blast-furnace man
It is long.The usually above entire analytic process is 20 minutes to 1 hour time-consuming, and analysis time is often subject to the work effect of field personnel
The influence of rate.Therefore, the testing result not in time obtained by common detection methods is for instructing blast furnace section chief to control molten iron silicon
Content has little significance.
In the case where the cost pressure of iron and steel enterprise and increasing national energy conservation and emission reduction demand, urgent need is developed a kind of new
The device that can be realized molten iron silicon content on-line quick detection, shorten detection time, improve ironmaking efficiency, be the low silicon smelting of blast furnace
Refining operation provides timely, accurate detection result as support.
Laser induced breakdown spectroscopy (abbreviation LIBS) technology be it is emerging in recent years a kind of using Laser induced plasma,
The technology being used for quickly detecting by detecting plasma emission spectroscopy to elemental composition, the technology may be implemented to gas, liquid
Body and the in situ, online of solid sample, fast component detection, analysis speed is fast, is not necessarily to sample preparation, the exhibition in terms of project analysis
Reveal biggish application potential.But be mostly at present closely detection application in faced chamber about the equipment of LIBS, and steel
Enterprise work bad environments, blast furnace casting process is often along with biggish dust pollution and stronger hyperthermia radiation, Er Qietie
Along with liquid fluctuating when water flows in trough, these all bring interference in ironmaking field application to LIBS technology.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of blast furnace molten iron silicon content on-line quick detection devices, realize
On-line checking is carried out to the silicone content for flowing molten iron in trough during blast furnace ironmaking, provides for blast furnace section chief and timely detects
It is reasonably adjusted as a result, being made based on this to blast furnace operation parameter, molten iron silicon content is controlled in reduced levels.
A kind of blast furnace molten iron silicon content on-line quick detection device, it is characterised in that: device is mounted on right above trough,
By molten iron sample on-line acquisition system, laser transmitting system, sequential control system, spectra collection and detection system, coaxially acquire light
Road system composition, each system are connected with computer.It is equipped with quantitative analysis system in computer, including spectral background removal,
The modules such as spectral peak identification, characteristic spectral line extraction, developed calibration model and silicone content calculating, may be implemented the automatic solution of spectrum
Analysis and silicon content calculate, accurately provide the content of element silicon in current molten iron in a short time.
It further, is the influence for avoiding molten iron water-level fluctuation in trough 26, the individually designed molten iron sample of the present apparatus exists
Line acquisition system, first progress molten iron sample online acquisition, secondly carry out Laser induced plasma, then by spectrum and
Detector detects to obtain the intensity of plasma emission spectroscopy, finally by the quantitative analysis procedure plasma being pre-designed
Emission spectrum is parsed to obtain molten iron silicon content value.
Molten iron sample on-line acquisition system is by sample spoon 27, connecting rod 19, elevator 17, laser range finder 24, fourth signal
Line 22 and the second data line 25 composition, sample spoon 27 are made of the materials such as cast iron or other high temperature alloys, and shape is cylindrical, circle
Platform shape is prismatic.Connecting rod 19 is the higher height of hardness for connecting elevator 17 and sample spoon 27, the material of connecting rod 19
Temperature alloy, shape be it is Z-shaped, one end is welded on the outer wall of sample spoon 27, and the other end is mechanically fixed with elevator 17,
Elevator 17 can be moved up and down with drive connection bar 19 and rotary motion, and elevator 17 passes through fourth signal line 22 and computer
21 connections, receive the instruction of computer 21.Laser range finder 24 is mounted on 27 surface somewhere of sample spoon, and Laser emission exports court
Lower vertical with 27 plane of sample spoon, laser irradiation to molten iron surface obtains laser range finder 24 and arrives the distance between molten iron surface,
Laser range finder 24 is connect by the second data line 25 with elevator 17, the range information measured is fed back to elevator, in turn
17 drive connection bar 19 of elevator and sample spoon 27 make fine tuning to 27 position of sample spoon, so that molten iron liquid when detecting each time
Face position is spatially in setting height always.
Further, the laser transmitting system is by laser power supply 18, laser cavity 14, second signal line 13 and
Three signal wires 20 composition, after the adjustment of 27 position of sample spoon, computer 21 issues excitation signal and passes through third signal wire 20
Laser power supply 18 is passed to, laser power supply 18 passes to laser cavity 14, laser cavity by second signal line 13
14 issue multi beam pulse laser immediately, propagate in the horizontal direction.
Further, the sequential control system is made of the 5th signal wire 28, the first signal wire 7 and sequence controller 3,
5th signal wire 28 and the first signal wire 7 are separately connected laser power supply 18 and photodetector 2, and effect is control laser electricity
Delays in work between source 18 and photodetector 2.The every triggering of laser once just transmits an electricity by the 5th signal wire 28
Signal transmits an electric signal by the first signal wire 7 after a time delay and gives to sequence controller 3, sequence controller 3
Photodetector 2 triggers photodetector 2, detects to spectral intensity.
Further, spectra collection and detection system are by light collector 8, optical fiber 5, spectrometer 1, photodetector 2 and
One data line 4 composition；Light collector 8 is mounted on right above acquisition convex lens 9, and plasma emissioning light line is received by light collector 8
Collect and be coupled into optical fiber 5,1 slotted inlets of spectrometer is entered by the conduction of optical fiber 5, spectrometer 1 passes through grating plasma
Transmitting light be divided, photodetector 2 after the electric signal for receiving sequence controller 3 plasma emission spectrum into
Row intensity detection, and will test result and computer 21 is transferred to by the first data line 4.
Further, light path system is coaxially acquired by laser beam expanding system, dichroscope 10, laser condensing lens 16, acquisition
Convex lens 9, optical path protection shell 15 and gas nozzle 23 form, and the laser beam expanding system is by input concavees lens 12 and defeated
Convex lens 11 forms out；It inputs concavees lens 12 and output convex lens 11 is parallel to each other and, laser beam expanding system vertical with laser beam axis
The effect of system is to reduce laser beam divergence, increases lasing beam diameter, preferably focuses when in order to transmit at a distance；Described two to
The angle of Look mirror 10 and horizontal optical axis is 45 °, and effect is to change laser transmission direction, while enabling plasma emissioning light line
It enough penetrates coaxially to be acquired；The laser condensing lens 16 are mounted on immediately below dichroscope 10, and effect is will be vertical
Laser beam is assembled, can be in quantity set；Molten iron lower face in the focal adjustments of laser condensing lens 16 to sample spoon, acquisition
Convex lens 9 is mounted on right above dichroscope 10, and effect is that plasma emissioning light line is converged to light collector 8, and light is collected
Device 8 is located at the focal position of acquisition convex lens 9；Entire coaxial acquisition optical path is included by the optical path protection shell 15, is made
With being fixing optical element, guarantee that optical path is stable and reduce the influence of metallurgy live dust and hyperthermia radiation to optical element；Light
It is in F shape that the shape of shell 15 is protected on road, and material is heat-insulating material, has stronger hardness, and optical path protects 15 lower part of shell close
At sample spoon, pipe diameter reduces, and effect is to reduce the influence of 26 top dust of trough；The gas nozzle 23 is mounted on light
15 lower sides of shell are protected on road, and 23 direction of gas nozzle is obliquely that effect is by blasting gas, so that in trough 26
The dust of side not can enter in optical path protection shell 15, to reduce influence of the dust to optical element and optical path；The gas
For air or other inert gases.
The present invention is devised one kind and is specially examined online towards molten iron silicon content by reasonable light path design and system building
The LIBS device of survey can be realized quick, on-line checking to molten iron silicon content.
The advantageous effects of the above technical solutions of the present invention are as follows:
1, the molten iron silicon content flowed in trough can be used for quickly detecting in a short time, compared to traditional detection
Method, the device are not necessarily to sample preparation, sample presentation, and analysis time is short, can accomplish to analyze in real time, detect the frequency side of providing to increase
Just, the silicone content level for understanding current molten iron in time for blast furnace section chief provides convenience, and is conducive to blast furnace section chief and is based on this in time
It makes adjustment to job parameter, so that silicone content is maintained reduced levels, improves molten steel quality.
2, the present invention realizes on-line automatic sampling, automatically analyzes, and whole process does not need human intervention, it is only necessary to blast furnace
One key of section chief assigns detection instruction, reduces the danger coefficient of human cost and blast furnace flushing and casting, improves detection effect
Rate.
3, successful application of the invention will further decrease the cost of material of ironmaking and steelmaking process, reduce solid waste
With the discharge of pernicious gas, to the further cost efficiency of iron and steel enterprise, realize that green production is of great significance.
Detailed description of the invention
Fig. 1 is a kind of blast furnace molten iron silicon content on-line quick detection schematic device of the invention；
Wherein, 1 is spectrometer, and 2 be photodetector, and 3 be sequence controller, and 4 be the first data line, and 5 be optical fiber, and 6 are
Lagging casing, 7 be the first signal wire, and 8 be light collector, and 9 be acquisition convex lens, and 10 be dichroscope, and 11 be output convex lens,
12 be input concavees lens, and 13 be second signal line, and 14 be laser cavity, and 15 protect shell for optical path, and 16 be laser condensing lens,
17 be elevator, and 18 be laser power supply, and 19 be connecting rod, and 20 be third signal wire, and 21 be computer, and 22 be fourth signal
Line, 23 be gas nozzle, and 24 be laser range finder, and 25 be the second data line, and 26 be trough, and 27 be sample spoon, and 28 be the 5th
Signal wire.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
The present invention provides a kind of blast furnace molten iron silicon content on-line quick detection device and method, which includes that molten iron sample exists
Line acquisition system, laser transmitting system, sequential control system, spectra collection and detection system, coaxial acquisition optical path and quantitative point
Analysis system, device are directly installed on 26 top of trough.
As shown in Figure 1, being the schematic diagram of the device, decline is assigned to elevator 17 by computer 21 from blast furnace section chief and is referred to
It enables, 17 drive connection bar 19 of elevator and 27 vertical downward movement of sample spoon, so that sample spoon 27 is submerged completely in trough 26
Molten iron level under, after the several seconds of pausing, voluntarily 27 upward vertical movement of drive connection bar 19 and sample spoon of elevator 17, to referring to
Stopping is set in positioning, and subsequent laser range finder 24 carries out rapid survey to the vertical range between molten iron level to it and feeds back to liter
Drop machine 17, elevator 17 voluntarily drive the height of 27 micro-regulation sample spoon 27 of sample spoon so that every time measurement when sample spoon 27 in iron
Water level is in identical height and position, which is pre-optimized setting, in the position under, laser spectrum quality
Highest.
After 27 fine position of sample spoon, elevator 17, which determines position, finishes instruction feedback to computer 21, calculates
Machine 21 issues the instruction of excitation laser to laser power supply 18 immediately, and laser cavity 14 is launched pulse in the horizontal direction and swashed
Light, after laser beam expanding system, the angle of divergence reduces laser, and lasing beam diameter increases, and the laser after then expanding is by dichroic
It is vertically downward, then to be assembled by laser condensing lens 16, laser converging focal point exists that mirror 10, which reflects and changes the direction of propagation,
Somewhere below molten iron level.Plasma generates under laser ablation, excitation, and plasma is during expanding cooling
Emitting light, the laser focusing lens 16 that transmitting light passes through top become parallel rays, continue thereafter with and penetrate dichroscope 10,
And the acquisition convex lens 9 for being installed in 10 top of dichroscope converges to the surface of light collector 8, and then is transmitted by optical fiber 5
To the inlet of 1 slit of spectrometer, spectrometer 1 is divided the plasma emissioning light line being collected into.
In addition, the signal of laser triggering passes to sequence controller 3 simultaneously in above-mentioned laser excitation laser, lead to
The accurate delay control for crossing sequence controller 3 then triggers photodetector 2, therefore, at one section of laser emission pulse laser
After time, photodetector 2 just start to work and detect by spectrometer 1 light splitting after each spectral line intensity, and laser with
Time delay between photodetector 2 be obtain and be kept fixed by optimum experimental it is constant.Photodetector 2 will test
To spectral intensity values feed back to computer 21 by the first data line 4 and save.In order to reduce the bands such as pulse energy stability
The influence come, the spectrum detected are the accumulation result of repeatedly excitation plasma spectrometry.
Spectral detection result solves spectrum by quantitative spectrochemical analysis software after data line is transferred to computer
Analysis, and silicone content value in current molten iron is extrapolated based on this.After detection, computer 21 is issued to elevator 17 and is instructed, and is risen
17 drive connection bar 19 of drop machine is rotated by 90 °, so that sample spoon 27 pours into molten iron therein in trough 26, is then risen
17 drive connection bar 19 of drop machine sets back, and preparation detects next time.
In working condition, the gas nozzle 23 for being mounted on optical path protection 15 side wall of shell is always maintained at the shape of blowing gas
State prevents dust from entering inside optical path along laser optical path outlet, influences the normal use of optical element.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of blast furnace molten iron silicon content on-line quick detection device, it is characterised in that: device be mounted on trough (26) just on
Side, by molten iron sample on-line acquisition system, laser transmitting system, sequential control system, spectra collection and detection system, coaxial acquisition
Light path system composition, each system are connected with computer；Quantitative analysis system is equipped in computer, including spectral background is gone
Remove, spectral peak identification, characteristic spectral line extract, developed calibration model and silicone content computing module, be able to achieve the automatic solution of spectrum
Analysis and silicon content calculate, accurately provide the content of element silicon in current molten iron in a short time.
2. a kind of blast furnace molten iron silicon content on-line quick detection device according to claim 1, it is characterised in that: wherein institute
Stating molten iron sample on-line acquisition system includes sample spoon (27), connecting rod (19), elevator (17), laser range finder (24), second
Data line (25) and fourth signal line (22)；
The shape of the sample spoon (27) is cylindrical, truncated cone-shaped or prismatic, and upper surface is open, following table face closure, and material is
Cast iron or high temperature ceramic material；The connecting rod (19) is the metallic rod for connecting sample spoon (27) and elevator (17), material
For high temperature alloy, wherein connecting rod (19) and the connection type of sample spoon (27) are welding, and the connection type with elevator is machine
Tool is fixed；The elevator (17) can be moved up and down with drive connection bar (19) sample spoon (27) connected to it, while can be with
Drive connection bar (19) is rotated, and carries out signal biography by fourth signal line (22) between elevator (17) and computer (21)
It is defeated；The laser range finder (24) is fixed on right above sample spoon, measures itself and iron in sample spoon by laser range finder (24)
Range information is fed back by the second data line (25) to elevator (17) and drives elevator by the vertical range between water level
(17) sample spoon position is finely adjusted, so that molten iron level position is spatially high in setting always when detecting each time
Degree.
3. a kind of blast furnace molten iron silicon content on-line quick detection device according to claim 1, it is characterised in that: described to swash
Light emission system is made of laser power supply (18), laser cavity (14), second signal line (13) and third signal wire (20)；
After the adjustment of sample spoon (27) position, computer (21) issues excitation signal and passes to laser by third signal wire (20)
Device power supply (18), laser power supply (18) pass to laser cavity (14), laser cavity by second signal line (13)
(14) multi beam pulse laser is issued immediately, is propagated in the horizontal direction.
4. a kind of blast furnace molten iron silicon content on-line quick detection device according to claim 1, it is characterised in that: when described
Sequence control system is made of sequence controller (3), the 5th signal wire (28) and the first signal wire (7), the sequence controller (3)
It is separately connected laser power supply (18) and photodetector (2) by the 5th signal wire (28) and the first signal wire (7), effect is
Control the delays in work between laser power supply (18) and photodetector (2)；The every triggering of laser once just passes through the 5th letter
Number line (28) transmits an electric signal and gives sequence controller (3), and sequence controller (3) passes through the first letter after a time delay
Number line (7) transmits an electric signal and gives photodetector (2), starts to visit by sequence controller (3) triggering photodetector (2)
Survey spectral intensity.
5. a kind of blast furnace molten iron silicon content on-line quick detection device according to claim 1, it is characterised in that: the light
Spectrum acquisition and detection system are by light collector (8), optical fiber (5), spectrometer (1), photodetector (2) and the first data line (4)
Composition；Light collector (8) is mounted on right above acquisition convex lens (9), and plasma emissioning light line is collected simultaneously by light collector (8)
Be coupled into optical fiber (5), by optical fiber (5) conduction enter spectrometer (1) slotted inlets, spectrometer (1) by grating equity from
Daughter transmitting light is divided, and photodetector (2) plasma after the electric signal for receiving sequence controller (3) is sent out
It penetrates spectrum and carries out intensity detection, and will test result and be transferred to computer (21) by the first data line (4).
6. a kind of blast furnace molten iron silicon content on-line quick detection device according to claim 1, it is characterised in that described same
Axis acquires light path system and is protected by laser beam expanding system, dichroscope (10), laser condensing lens (16), acquisition convex lens (9), optical path
Protect shell (15), gas nozzle (23) composition；The laser beam expanding system is by an input concave lens (12) and output convex lens
(11) it forms；It inputs concavees lens (12) and output convex lens (11) is parallel to each other and, laser beam expanding system vertical with laser beam axis
Effect be reduce laser beam divergence, increase lasing beam diameter, preferably focused when in order to transmit at a distance；The dichroic
The angle of mirror (10) and horizontal optical axis is 45 °, and effect is to change laser transmission direction, while enabling plasma emissioning light line
It enough penetrates coaxially to be acquired；The laser condensing lens (16) are mounted on immediately below dichroscope (10), and effect is will to hang down
Straight laser beam is assembled, can be in quantity set；In the focal adjustments to sample spoon of laser condensing lens (16) under molten iron surface
Side, acquisition convex lens (9) are mounted on right above dichroscope (10), and effect is that plasma emissioning light line is converged to light collection
Device (8), light collector (8) are located at the focal position of acquisition convex lens (9)；Optical path protection shell (15) entirely will coaxially adopt
Collection optical path is included, and effect is fixing optical element, guarantees that optical path is stable and reduce the live dust of metallurgy and hyperthermia radiation pair
The influence of optical element；It is in F shape that optical path, which protects the shape of shell (15), and material is heat-insulating material, has stronger hardness, optical path
Protect shell (15) lower part at sample spoon, pipe diameter reduces, and effect is to reduce the influence of dust above trough (26)；
The gas nozzle (23) is mounted on optical path protection shell (15) lower sides, and gas nozzle (23) direction is effect obliquely
It is by blasting gas, so that the dust above trough (26) not can enter in optical path protection shell (15), to reduce powder
Influence of the dirt to optical element and optical path；The gas is air or other inert gases.
7. a kind of blast furnace molten iron silicon content on-line quick detection device according to claim 1, it is characterised in that: entire dress
It sets outside to be protected with lagging casing (6), to reduce the influence of live dust and hyperthermia radiation, is outside lagging casing (6)
Heat-insulating material, liner are high-strength steel sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910304147.2A CN109975274B (en) | 2019-04-16 | 2019-04-16 | Online rapid detection device for silicon content of molten iron of blast furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910304147.2A CN109975274B (en) | 2019-04-16 | 2019-04-16 | Online rapid detection device for silicon content of molten iron of blast furnace |
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| Publication Number | Publication Date |
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| CN109975274A true CN109975274A (en) | 2019-07-05 |
| CN109975274B CN109975274B (en) | 2024-01-23 |
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| CN201910304147.2A Active CN109975274B (en) | 2019-04-16 | 2019-04-16 | Online rapid detection device for silicon content of molten iron of blast furnace |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111999280A (en) * | 2020-08-18 | 2020-11-27 | 呼和浩特市环境科学研究所 | Need not surface water heavy metal real-time detection system of sample |
| CN113092448A (en) * | 2021-03-24 | 2021-07-09 | 中南大学 | Online detection method and system for silicon content of blast furnace molten iron |
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| CN111999280A (en) * | 2020-08-18 | 2020-11-27 | 呼和浩特市环境科学研究所 | Need not surface water heavy metal real-time detection system of sample |
| CN111999280B (en) * | 2020-08-18 | 2024-02-09 | 呼和浩特市环境科学研究所 | Real-time detection system for heavy metals in surface water without sampling |
| CN113092448A (en) * | 2021-03-24 | 2021-07-09 | 中南大学 | Online detection method and system for silicon content of blast furnace molten iron |
| CN113740314A (en) * | 2021-08-05 | 2021-12-03 | 合肥金星机电科技发展有限公司 | Full-automatic online detection method and system for high-temperature melt components |
| CN113758911A (en) * | 2021-08-05 | 2021-12-07 | 合肥金星机电科技发展有限公司 | Method and device for judging material fusing state and machine readable storage medium |
| CN114235517A (en) * | 2021-11-16 | 2022-03-25 | 北京科技大学 | Method for automatically removing oxide layer of LIBS stokehole sample by nine-point surrounding |
| CN114216896A (en) * | 2021-11-18 | 2022-03-22 | 合肥正阳光电科技有限责任公司 | Laser monitoring station and laser detection method for online rapid identification of steel number plate |
| CN114226279A (en) * | 2021-12-13 | 2022-03-25 | 欧冶云商股份有限公司 | Automatic detecting and sorting device for alloy content of steel waste and inferior materials |
| CN114226279B (en) * | 2021-12-13 | 2023-12-22 | 欧冶云商股份有限公司 | Automatic detecting and sorting device for alloy content of waste and inferior steel |
| CN114720454A (en) * | 2022-06-10 | 2022-07-08 | 合肥金星智控科技股份有限公司 | Melt component detection system, method and medium for strong flue gas dust environment |
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