CN105510328A - Coal petrographic analysis test and graph processing method - Google Patents
Coal petrographic analysis test and graph processing method Download PDFInfo
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- CN105510328A CN105510328A CN201410498953.5A CN201410498953A CN105510328A CN 105510328 A CN105510328 A CN 105510328A CN 201410498953 A CN201410498953 A CN 201410498953A CN 105510328 A CN105510328 A CN 105510328A
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Abstract
The invention relates to a coal petrographic analysis test and graph processing method. The method adopts a digital coal petrographic analyzer to determine the vitrinite reflectance of coal, and according to the final graphics, deletes the scattered part that has a percentage content close to 0, smooth image and rising peak and is affected by interfering components, thus ensuring that the determined graph reflects the true components of coal. Compared with the prior art, the method provided by the invention can truly reflect the quality of coal provided by a supplier, more objectively reflect the real situation of coal so as to better serve coking and iron-making production, meets the fined large-scale production needs of companies, and provides more real and accurate data.
Description
Technical field
The present invention relates to inspection assay technique field, particularly relate to a kind of coal petrography facies analysis inspection and graphic processing method.
Background technology
Carry out coal situation for raw material to analyze, traditional method is according to the work point index of coal to judge whether it meets corresponding coal requirement, and does not judge whether it is single coal, carrys out the detectability whether coal exists mixed coal phenomenon.Use Full automatic digital coal petrographic analyzer MY6000, it can measure the vitrinite reflectance of producing coal automatically, by pattern analysis, and in conjunction with the work point index of this coal, and then judge the type (single, simple mixed, compound) of coal, thus determine whether to there is mixed coal phenomenon.But the vitrinite reflectance of the coal determined in actual use varies, the figure how processing vitrinite reflectance is formed as restricting the bottleneck that we send survey report.
Summary of the invention
The object of the present invention is to provide a kind of coal petrography facies analysis inspection and graphic processing method, adopt digital coal petrographic analyzer to measure the vitrinite reflectance of coal, according to final data figure delete degree close to 0, image smoothing, just to play peak, scattered part, ensure measured come figure reflect the true component of producing coal.
For achieving the above object, the present invention realizes by the following technical solutions:
A kind of coal petrography facies analysis inspection and graphic processing method, measure vitrinite reflectance figure in coal by microphotometer, be used for judging whether coal is single coal or mixed coal, and remove the image artifacts of experimental result generation, and concrete steps are as follows:
1) sample preparation
Sample is the briquet of size 25mm × 25mm, and a fritter plasticine is placed on microslide center, and it places briquet, and light faces up, and puts a lens paper above, pressure device flattens gently and takes off, briquet light face drips 2 ~ 4 cedar oils;
2) calibration criterion sheet determine instrument state
The standard film correcting instrument state is placed in microscope stage center successively and mixes up microscope focus, make eyepiece Plays sheet imaging clearly, regulate the working voltage of microphotometer, or regulate microscope light source voltage, collection magnitude of voltage is made to equal this standard film corresponding voltage signal right value, phase tolerace ± 1mV;
3) testing process
Sample determination area selects 1 × 1cm
2, measure × line space selection 10,000 points × the 100um that counts, often scan a line focusing selection of times 10, coal cinder to be measured is placed in microscope stage center, regulate microscope focus to make imaging clearly; If there is fuzzy imaging in mensuration process, observe the time of one or two row, if it adjusts by automatic focusing function, then do not need manual time-out, automatic mensuration can be continued; If after observing one or two row, still fuzzy imaging, then finely tune auxiliary adjustment microscope focus; If in mensuration process, often there is fuzzy imaging, then this result is cancelled, and again need grind, throw coal sample;
4) interpretation of result
After experiment terminates, with reflectivity standards material calibration microscope, if the right value deviation of the collection magnitude of voltage of standard substance and this standard film corresponding voltage signal is in ± 3mV, then this experimental result is effective, otherwise cancel, need again demarcate standard substance, redeterminate, by test;
5) image procossing
Get rid of the illusion in figure, coal correction is come to difference;
A. observe overall figure and determine unimodal, bimodal, three peaks and above, recess number, display Re section, checks content;
B. delete degree close to 0, image smoothing, just to play peak, scattered part;
C. be no matter the figure at several peak, finally all retain the visuals meeting normal distribution, all the other are deleted;
D. for the figure comparatively disperseed, revise in conjunction with coal random reflectance of vitrinite distributed area, namely pare off and be less than 5%, scattered part at interval frequency.
Compared with prior art, the invention has the beneficial effects as follows:
Can reflect that supplier provides the quality of coal, more objectively reflects the truth of producing coal really, better serve coking, ironmaking production.By the reflectivity of the micropetrological unit-vitrinite of measuring coal, the petrofacies of coal mainly determine that the letter carrying out coal mixes situation, and vitrinite reflectance is mainly reflected in Y value.Be 8% to calculate by monthly average Y value disqualification rate, burnt rich coal Y value inspected number monthly average 150000 tons, then the defective amount of the burnt rich coal of monthly average is 12000 tons, by saving 10 yuan/ton calculating, estimate wound effect 12000*10*12=1440000 unit/year, meet the large Production requirement of company's best quality, data information is more really and accurately provided.
Accompanying drawing explanation
Fig. 1 is the shape figure that trails continuously.
Fig. 2 is the shape figure that trails continuously after amendment.
Fig. 3 only has a main peak to account for the higher figure of degree.
Fig. 4 only has a main peak to account for the higher figure of degree after amendment.
Fig. 5 is the figure presenting two normal distribution curves.
Fig. 6 is the figure presenting two normal distribution curves after amendment.
Fig. 7 is the coking coal figure that three kinds of coals mix out.
Fig. 8 is the coking coal figure that the rear three kinds of coals of amendment mix out.
Fig. 9 is the figure not meeting above-mentioned repairing condition.
Figure 10 is the figure not meeting above-mentioned repairing condition after amendment.
Figure 11 is the figure of dispersion.
Figure 12 is the figure of dispersion after amendment.
Figure 13 is the figure due to interfering component impact.
Figure 14 is the figure due to interfering component impact after amendment.
Figure 15 is amendment figure process flow diagram.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further illustrated:
A kind of coal petrography facies analysis inspection and graphic processing method, measure vitrinite reflectance figure in coal by microphotometer, be used for judging whether coal is single coal or mixed coal, and remove the image artifacts of experimental result generation, and concrete steps are as follows:
1) sample preparation
Sample is the briquet of size 25mm × 25mm, and a fritter plasticine is placed on microslide center, and it places briquet, and light faces up, and puts a lens paper above, pressure device flattens gently and takes off, briquet light face drips 2 ~ 4 cedar oils;
2) calibration criterion sheet determine instrument state
The standard film correcting instrument state is placed in microscope stage center successively and mixes up microscope focus, make eyepiece Plays sheet imaging clearly, regulate the working voltage of microphotometer, or regulate microscope light source voltage, collection magnitude of voltage is made to equal this standard film corresponding voltage signal right value, phase tolerace ± 1mV;
3) testing process
Sample determination area selects 1 × 1cm
2, measure × line space selection 10,000 points × the 100um that counts, often scan a line focusing selection of times 10, coal cinder to be measured is placed in microscope stage center, regulate microscope focus to make imaging clearly; If there is fuzzy imaging in mensuration process, observe the time of one or two row, if it adjusts by automatic focusing function, then do not need manual time-out, automatic mensuration can be continued; If after observing one or two row, still fuzzy imaging, then finely tune auxiliary adjustment microscope focus; If in mensuration process, often there is fuzzy imaging, then this result is cancelled, and again need grind, throw coal sample;
4) interpretation of result
After experiment terminates, with reflectivity standards material calibration microscope, if the right value deviation of the collection magnitude of voltage of standard substance and this standard film corresponding voltage signal is in ± 3mV, then this experimental result is effective, otherwise cancel, need again demarcate standard substance, redeterminate, by test;
5) image procossing
Get rid of the illusion in figure, coal correction is come to difference;
A. observe overall figure and determine unimodal, bimodal, three peaks and above, recess number, display Re section, checks content;
B. delete degree close to 0, image smoothing, just to play peak, scattered part;
C. be no matter the figure at several peak, finally all retain the visuals meeting normal distribution, all the other are deleted;
D. for the figure of dispersion, revise in conjunction with coal random reflectance of vitrinite distributed area, namely pare off and be less than 5%, scattered part at interval frequency.
Described microphotometer is Zeiss HD type full microscope photometer.
Instrument condition of work is determined:
1) microscope general requirement: the 1. full-automatic polarizing microscope Scope.A1 of Zeiss, Germany, is furnished with autoscan platform, has double light path image transmitting interface, the functions such as photo output.2. eyepiece: binocular vision lens barrel.10X, field of view number is 23, band diopter compensating eyepiece, configuration prepackage 10/100 micrometer.Field of view is large and comfortable, and eyespot height is adjustable, adjusts during eye distance and ensures eyepiece parfocalization 50mm.3. object lens: high precision new standard ICCS object lens, flat field apochromatic objective, independently chromatic aberration correction technology.Oil immersion objective: " EC " 50x, numerical aperture 1.020x dry system lens.4. optical scale: be furnished with eyepiece micrometer and micrometer platform chi, sample attachable mechanical stage, and various optical filter.
2) microphotometer general requirement: micro-proximate analysis, the coal vitrinite reflectance that automatically can measure coal rapidly and accurately, differentiates single coal bed coal and mixed coal type etc. automatically.Meet international GB6948 standard, high resolving power, high sensitivity, have digital scanning ability, have light anomalous integral signal storage capacity, volume is little, lightweight, stable performance.
3) Laboratory Request: 1. laboratory possesses three anti-conditions: shockproof, moistureproof, dust-proof.2. power supply: 220V ± 10%, 50HZ.3. temperature: 20 DEG C ± 10 DEG C.4. relative humidity: be not more than 85%.
By the Zeiss numeral coal petrographic analyzer vitrinite reflectance figure that measures out because sample preparation or other reasons exist certain illusion, therefore we take manually to measure vitrinite reflectance in coal to the coal under same sampling and contrast with the figure measuring vitrinite reflectance in coal with full-automatic method, and the figure employing hand graphical inconsistent for both corrects the method for full-automatic figure to determine the figure of the final mensuration of coal.
Embodiment 1 ~ 7 is coal random reflectance of vitrinite distribution plan
Embodiment 1
As shown in Fig. 1 ~ Fig. 2, continuously hangover shape figure, deletes and occurs that degree is little, part that is level and smooth, that just will play peak.
Embodiment 2
As shown in Fig. 3 ~ Fig. 4, only have a main peak account for degree higher time, discontinuous, that degree is less peak all can be pared off.
Embodiment 3
As shown in figures 5 and 6, for the figure presenting two normal distribution curves, only need retain two normal distribution parts, remaining pares off, and multiple normal distribution curve is also similar operations.
Embodiment 4
As shown in Fig. 7 ~ Fig. 8, for the coking coal that three kinds of coals mix out, be generally form by mixtures such as 1/3 coking coal, rich coal, lean coals, only need pare off scattered, discontinuous.
Embodiment 5
As shown in Fig. 9 ~ Figure 10, for the figure not meeting above-mentioned repairing condition, from just, the place that whole normal distribution completes will be remained in the place at peak always, make figure complete, not at random.
Embodiment 6
As shown in Figure 11 ~ Figure 12, for the figure comparatively disperseed, to revise in conjunction with coal random reflectance of vitrinite distributed area, namely interval frequency be less than 5%, scattered part pares off, Figure 11 is the figure before amendment, and Figure 12 is amended figure.
Embodiment 7
As shown in Figure 13 ~ Figure 14, for the figure affected due to interfering component, generally will repair with reference to other indexs of semi-automatic measurement result and this coal, Figure 13 is the figure before amendment, and Figure 14 is amended figure.
Implication for recess in figure:
Have peak also to have low ebb in distribution graph of reflectivity, this is the principal character of commercial coal, and peak and peak-to-peak low ebb are called recess.Recess is except discontinuous gap, also should comprise the peak-to-peak paddy do not disconnected.But in fact commercial coal is various in style, measured value distribution plan is very complicated, still must great care during differentiation, and the little disconnection of indivedual local, low ebb and peak all can not be assert hastily, consider to meet this condition of normal distribution.So-called normal distribution, namely basic consistent with the distribution range of same order list coal.
Results expression:
Result divides statistical computation and mapping two expression waies.The parameter of statistical computation has reflectivity distribution scope (minimum ~ maximum), mean value, standard deviation, measuring point number.Standard deviation reflection measured value dispersion, on its impact very greatly, it is the important parameter judging commercial coal character for the distribution range of measured value and continuity.
Distribution plan is the main expression way of test result, and measured value histogram is used in unification, and the longitudinal axis is frequency, and namely the actual measurement of each interval is counted and accounted for the number percent of total measuring point number; Transverse axis is reflectance value, selects suitable interval to be divided into several rank.From statistics viewpoint, gap size directly affects the feature of distribution plan, too littlely there will be space, makes too greatly the reflection of distribution plan feature be restricted, once has the example of 0.02%, 0.05%, 0.1% in the world, adopts 0.05% without exception for ease of contrasting.
Claims (1)
1. a coal petrography facies analysis inspection and graphic processing method, measure vitrinite reflectance figure in coal by microphotometer, be used for judging whether coal is single coal or mixed coal, and remove the image artifacts of experimental result generation, it is characterized in that, concrete steps are as follows:
1) sample preparation
Sample is the briquet of size 25mm × 25mm, and a fritter plasticine is placed on microslide center, and it places briquet, and light faces up, and puts a lens paper above, pressure device flattens gently and takes off, briquet light face drips 2 ~ 4 cedar oils;
2) calibration criterion sheet determine instrument state
The standard film correcting instrument state is placed in microscope stage center successively and mixes up microscope focus, make eyepiece Plays sheet imaging clearly, regulate the working voltage of microphotometer, or regulate microscope light source voltage, collection magnitude of voltage is made to equal this standard film corresponding voltage signal right value, phase tolerace ± 1mV;
3) testing process
Sample determination area selects 1 × 1cm
2, measure × line space selection 10,000 points × the 100um that counts, often scan a line focusing selection of times 10, coal cinder to be measured is placed in microscope stage center, regulate microscope focus to make imaging clearly; If there is fuzzy imaging in mensuration process, observe the time of one or two row, if it adjusts by automatic focusing function, then do not need manual time-out, automatic mensuration can be continued; If after observing one or two row, still fuzzy imaging, then finely tune auxiliary adjustment microscope focus; If in mensuration process, often there is fuzzy imaging, then this result is cancelled, and again need grind, throw coal sample;
4) interpretation of result
After experiment terminates, with reflectivity standards material calibration microscope, if the right value deviation of the collection magnitude of voltage of standard substance and this standard film corresponding voltage signal is in ± 3mV, then this experimental result is effective, otherwise cancel, need again demarcate standard substance, redeterminate, by test;
5) image procossing
Get rid of the illusion in figure, coal correction is come to difference;
A. observe overall figure and determine unimodal, bimodal, three peaks and above, recess number, display Re section, checks content;
B. delete degree close to 0, image smoothing, just to play peak, scattered part;
C. be no matter the figure at several peak, finally all retain the visuals meeting normal distribution, all the other are deleted;
D. for the figure of dispersion, revise in conjunction with coal random reflectance of vitrinite distributed area, namely pare off and be less than 5%, scattered part at interval frequency.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108132231A (en) * | 2016-11-30 | 2018-06-08 | 广东韶钢松山股份有限公司 | A kind of vitrinite reflectance determination value temperature deviation bearing calibration |
| CN110426350A (en) * | 2019-05-15 | 2019-11-08 | 中国石油大学(北京) | The quantitative approach and system of maceral composition in a kind of rock |
| CN110702873A (en) * | 2019-09-23 | 2020-01-17 | 青岛特殊钢铁有限公司 | Method for judging powder yield of injected granulated coal in mill |
| CN113109353A (en) * | 2021-04-07 | 2021-07-13 | 山西太钢不锈钢股份有限公司 | Method for distinguishing notch in coking coal vitrinite reflectivity distribution diagram |
| CN114279976A (en) * | 2021-12-27 | 2022-04-05 | 北京建筑大学 | Mural soluble salt content detection method based on reflection spectrum |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108132231A (en) * | 2016-11-30 | 2018-06-08 | 广东韶钢松山股份有限公司 | A kind of vitrinite reflectance determination value temperature deviation bearing calibration |
| CN110426350A (en) * | 2019-05-15 | 2019-11-08 | 中国石油大学(北京) | The quantitative approach and system of maceral composition in a kind of rock |
| CN110702873A (en) * | 2019-09-23 | 2020-01-17 | 青岛特殊钢铁有限公司 | Method for judging powder yield of injected granulated coal in mill |
| CN113109353A (en) * | 2021-04-07 | 2021-07-13 | 山西太钢不锈钢股份有限公司 | Method for distinguishing notch in coking coal vitrinite reflectivity distribution diagram |
| CN114279976A (en) * | 2021-12-27 | 2022-04-05 | 北京建筑大学 | Mural soluble salt content detection method based on reflection spectrum |
| CN114279976B (en) * | 2021-12-27 | 2023-09-19 | 北京建筑大学 | Method for detecting content of soluble salt in wall painting based on reflection spectrum |
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