CN1514226A - Coal quality industrial analysis non continuous determination method and its analysis instrument - Google Patents
Coal quality industrial analysis non continuous determination method and its analysis instrument Download PDFInfo
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- CN1514226A CN1514226A CNA031246397A CN03124639A CN1514226A CN 1514226 A CN1514226 A CN 1514226A CN A031246397 A CNA031246397 A CN A031246397A CN 03124639 A CN03124639 A CN 03124639A CN 1514226 A CN1514226 A CN 1514226A
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Abstract
An analyser consists of lifting rod for sepciman sending in cylinder furnace, tray for specimen crucible at well formed furnace, electronic balance, computer to control lifting rod and tray as well as to connect with heating resistance and thermocoupled. The determination method is as placing coal specimen crucible on tray connecting through to nitrogen and to heat it at temperature of 105-110 deg.C up to mass constant in well formed furnace, determinating automatically out percentage of water content, then connecting through to oxygen and to heat it at temperature of 850 minus or plus 10 deg.C till mass constant as well as to determinate out productivity of ash content, placing volatile crucible and coal specimen in cylinder furnace for heating it at temperature of 900 minus or plus 10 deg.C for 7 min and to determinate out productivity of volatile.
Description
Technical field: the present invention relates to a kind of method of testing and instrument, particularly test the method and the instrument of organic moisture, ash content, volatile matter and fixed carbon such as coal, coke.
Background technology: at present, (test to these four indexs is called technical analysis for organic moisture such as coal, coke, ash content, volatile matter and fixed carbon, corresponding national standards GB/T212 and GB/T2001 are arranged) method of testing be to adopt the drying box testing moisture, measure ash content, volatile matter with muffle furnace (claiming the box high temperature furnace again), calculate fixed carbon according to moisture, ash content, volatile matter result then.Its method of testing principle is: at a certain temperature, and the variable quantity of weighing test sample quality.This method of testing does not have the device of automatic weighing test sample quality, does not have automatically test sample to be sent into the device of drying box or muffle furnace yet, more can not calculate test result automatically and store and print.Need complicated manually-operated and calculating, labour intensity is big, and efficiency is low, and test speed is slow.
Summary of the invention: of the present invention is to need complicated manually-operated in order to overcome existing method of testing, labour intensity is big, efficiency is low, and the deficiency that test speed is slow provides a kind of full automatic organic technical analysis method and instruments thereof such as coal, coke of being used for.Automatically the quality of weighing test sample can be sent into test sample in the resistance furnace automatically again and test, and calculate test result automatically and store and print.
Technical solution of the present invention is: discontinuous assay method of a kind of coal industry analysis and analyser thereof, this analyser is a kind of Industrial Analyzer for Coal Quality, comprise moisture ash content test furnace, the volatile matter test furnace, with control circuit and computer, the thermopair that connects with control circuit is housed respectively in two stoves, the cloudy silk of electricity, galvanic couple is given computer with temperature signal, computer connects resistive heater and driving motor and the electronic balance of controlling in two stoves through control circuit, the volatile matter test furnace is the uncovered cylindrical furnace cylindraceous of an end, there is bell the upper end, lower end circular hole uncovered and on moisture ash content test furnace bell one side connects, two stove burner hearth vertical connections, the vertical sample transfer bar of installing in two burner hearth cavities of vertical connection, sample transfer bar and liter, fall and detent mechanism A connection, moisture ash content test furnace is one the box-like well shape stove of lid circle, sample weighting rod and holder sample dish are housed in the burner hearth cavity, sample weighting rod connects with electronic balance, holder sample dish periphery has several circular holes of placing the sample crucible, tried to get to the heart of a matter center pole and liter, fall, rotation and detent mechanism B connect.
This analytical approach is the discontinuous assay method of a kind of coal industry analysis: percent water content, ash content and the volatile producibility of measuring ature of coal, calculate fixed carbon content, moisture, ash content, volatile matter discontinuous mensuration in above-mentioned same Industrial Analyzer for Coal Quality, place in the moisture ash content crucible of a certain amount of coal sample on Industrial Analyzer for Coal Quality holder sample dish, after the automatic weighing coal sample of analyser quality, at 105 ℃-110 ℃, be connected with in the well type heating furnace of drying nitrogen and be heated to constant mass.Calculate the percentage composition of moisture according to the mass loss of coal sample.Then, well type heating furnace is changed logical oxygen and rate of warming in accordance with regulations continues to be heated to 815 ℃ ± 10 ℃ to continuing the coal sample heating, calcination is to constant mass, according to the Mass Calculation ash content of residue.Afterwards, take out moisture ash content crucible, change put the volatile matter crucible and place again a certain amount of coal sample in crucible by after the automatic weighing coal sample of the analyser quality, coal sample is sent in the column type heating furnace that is warming up to 900 ℃ ± 10 ℃, accurately heating 7min accounts for the percentage of sample quality as volatile producibility to reduce quality.
Description of drawings:
Fig. 1 is that the Industrial Analyzer for Coal Quality structure is just being cutd open synoptic diagram
Fig. 2 is that the Industrial Analyzer for Coal Quality structure side is cutd open synoptic diagram
Fig. 3 is a light sheets groove detent mechanism structural representation
Fig. 4 is a rotation fluted disc light groove detent mechanism structural representation
The present invention further specifies as follows in conjunction with specific embodiments referring to accompanying drawing:
Industrial Analyzer for Coal Quality is that two resistance furnaces are installed in box-shaped enclosure [7]: one is volatile matter test furnace [3], is used to test volatile matter, and working temperature is controlled at 900 ° ± 10 ℃.This resistance furnace is cylindrical setting structure, and referring to accompanying drawing 1,2, the direction of axis line of cylinder is hollow burner hearth, and bell [1] is arranged at top, and the bottom is uncovered.Spiral is inlayed resistance wire [4] on the inwall of burner hearth, has a thermopair [2] to insert burner hearth at the middle part of this resistance furnace and is used for indicated temperature; Another is moisture, ash content test furnace [24], is used for testing moisture, ash content, and its working temperature is controlled at 107 ° ± 2.5 ℃ and 815 ° ± 10 ℃.This resistance furnace is a well shape structure, and bell [30] is arranged at top, and the bottom is a well shape furnace bottom.Inlay resistance wire [27] at the spiral inner wall of burner hearth, also inlay resistance wire furnace [29], [23] respectively, have a thermopair [25] to insert the burner hearth indicated temperature near the position, furnace wall at furnace bottom at bell [30] and furnace bottom.
Cylindrical resistance furnace [3] is stacked the bell [30] that is fixed on well shape resistance furnace [24] to be gone up near a side along the position.Have the uncovered equirotal circular hole of a size and cylindrical resistance furnace [3] bottom on the bell of this position [30], the burner hearth of cylindrical resistance furnace is communicated with the burner hearth connection of well shape resistance furnace.The holder sample dish [28] of collar plate shape places in the well shape resistance furnace [24].The periphery of holder sample dish [28] also has several circular holes, be used to settle sample crucible [5], there is a pole [26] at the center at the bottom of the disk of holder sample dish [28], be used for a support sample dish, pole [26] other end connects ascending, descending, rotation and a detent mechanism B, can drive holder sample dish [28] by it and rise, descends, rotates and the location.
Industrial Analyzer for Coal Quality includes computer, computer through control circuit respectively with resistance wire [4], [23], [27], [29], driving motor M
1, M
2, M
3, electronic balance and thermopair [2], [25] electrically connect, thermopair is given computer with temperature signal, computer is controlled resistive heater and driving motor and the electronic balance in two electric furnaces.
The pole ascending, descending of holder sample disk center, rotation and detent mechanism B are made up of worm gear, worm screw elevating mechanism D, light sheets groove detent mechanism F and rotating mechanism G, rotation fluted disc light groove detent mechanism H: worm gear, the worm screw ascending, descending D of mechanism are by worm gear piece b
2[18], worm screw a
2[17] with driving motor M
2[16] connect composition, worm screw a
2[17] be arranged in parallel and driving motor M with holder sample disk center's pole [26]
2[16] connect; Rotating mechanism G is by holder sample disk center's pole [26] and driving motor M
3[19] connect composition, rotating mechanism G is fixed on worm gear piece b
2[18] on, light sheets groove detent mechanism F is installed on worm gear piece b by the anti-dazzling screen that has notch [15]
2[18] side, location light groove [14] is installed on analyser case [7], referring to accompanying drawing 1,3 through support at the end; Rotation fluted disc light groove detent mechanism H is installed on holder sample disk center's pole [26] by rotation fluted disc [21], and location light groove [22] connects firmly on the rotating mechanism Building G to be formed, referring to accompanying drawing 1,4.
In below, well shape resistance furnace [24] bottom a sample transfer bar [6] that send sample crucible [5] to enter cylindrical resistance furnace [3] is installed, a bottom of passing well shape resistance furnace [24] of sample transfer bar [6] enters in the burner hearth, corresponding to the bottom position of sample crucible [5], ascending, descending of other end edge joint and detent mechanism A.Drive sample transfer bar [6] rise and fall by ascending, descending and detent mechanism A, during rising, sample transfer bar [6] jack-up sample crucible [5] is sent in the burner hearth of cylindrical resistance furnace [3].
Sample transfer bar ascending, descending and detent mechanism A are become with light sheets groove detent mechanism E level by worm gear, the worm screw ascending, descending C of mechanism: sample transfer bar [6] and worm screw a
1[9] parallel, and be connected in worm gear piece b
1[10] on, worm screw a
1[9] with driving motor M
1[13] connect; The anti-dazzling screen [12] that has notch is installed in worm gear piece b
1[10] side is near worm screw a
1[9] upper end installing and locating light groove [8] is referring to accompanying drawing 1,3.
In below, well shape resistance furnace [24] bottom an electronic balance [31] is housed also, referring to accompanying drawing 2, a sample weighting rod [32] is installed on the weighing plate of electronic balance [31], and the bottom that well shape resistance furnace [24] is crossed in sample weighting rod [32] other end enters in the burner hearth, corresponding to the bottom position of sample crucible [5].
Rising, decline and the resistance [3] of ascending, descending, rotation and sample transfer bar [6] on the holder sample dish [28] and the temperature of [24] control, scales/electronic balance weighing are all moved by computer controlled automatic by special control circuit and locate, measure.Reach the quality of automatic weighing test sample and send automatically that test sample is analyzed automatically in the resistance furnace, calculated automatically, storage, printing test result's purpose.Solving existing method of testing needs complicated manually-operated, and labour intensity is big, and efficiency is low, the problem that test speed is slow.
The discontinuous assay method of a kind of coal industry analysis: percent water content, ash content and the achromachia of measuring ature of coal divide productive rate, calculate fixed carbon content, moisture, ash content, volatile matter discontinuous mensuration in above-mentioned same Industrial Analyzer for Coal Quality, place in the moisture ash content crucible of a certain amount of coal sample on Industrial Analyzer for Coal Quality holder sample dish, after the automatic weighing coal sample of analyser quality, at 105 ℃-110 ℃, be connected with in the well type heating furnace of drying nitrogen and be heated to constant mass.Calculate the percentage composition of moisture according to the mass loss of coal sample.Then, well type heating furnace is changed logical oxygen and rate of warming in accordance with regulations continues to be heated to 815 ℃ ± 10 ℃ to continuing the coal sample heating, calcination is to constant mass, according to the Mass Calculation ash content of residue.Afterwards, take out moisture ash content crucible, change put the volatile matter crucible and place again a certain amount of coal sample in crucible by after the automatic weighing coal sample of the analyser quality, coal sample is sent in the column type heating furnace that is warming up to 900 ℃ ± 10 ℃, accurately heating 7min accounts for the percentage of sample quality as volatile producibility to reduce quality.
The concrete workflow of method of testing with moisture, ash content, volatile matter and the fixed carbon index of the discontinuous mensuration coal sample of Industrial Analyzer for Coal Quality is as follows:
1, in advance with moisture ash content crucible and volatile matter crucible, calcination is placed in the exsiccator standby to constant weight in (815 ± 10) ℃ and (900 ± 10) ℃ high temperature furnace respectively.
2, open the Industrial Analyzer for Coal Quality power supply, as when being controlled to be external PC computing machine, need open computing machine simultaneously, more than the preheating 30min.Move test control program simultaneously.
3, open moisture ash content bell, moisture ash content crucible is placed in the crucible hole that holds in the palm on the sample dish, crucible hole indicates location number, from 0 to No. 19, covers moisture ash content bell." claiming empty crucible heavily to order " of operation test control program, holder sample dish begins rotation, treat No. 0 position crucible hole just in time be in sample weighting rod directly over the time, holder sample dish stops the rotation, holder sample dish begins to descend, and drops to crucible and drops on the sample weighting rod fully and no longer include with holder sample dish and stop decline when contact.At this moment electronic balance weighs up the quality G of No. 0 empty crucible
0And be sent to computing machine and preserve.Ask the sample dish to begin to rise then, stopping when getting back to original position rising begins rotation again, and the above-mentioned steps that repeats No. 0 crucible quality of weighing weighs the quality G of 1-19 number each empty crucible, and the corresponding quality of crucible is G from No. 1 to No. 19
1, G
2G
19
4, treat be the quality of free crucible to claim after, open moisture ash content bell, in empty crucible, add coal sample to be tested since No. 1 crucible, do not add coal sample in No. 0 crucible.Cover moisture, ash content bell, repeat the step weighing clearancen crucible of the empty crucible quality of above-mentioned weighing and the gross mass G of coal sample to be tested then
Z, the corresponding gross mass of crucible is G from No. 1 to No. 19
Z1, G
Z2G
Z19, and this quality is sent to computing machine preserves.Test control program draws coal sample quality G to be tested with the quality that this quality deducts the sky crucible
S, the corresponding coal sample quality to be tested of crucible is G from No. 1 to No. 19
S1, G
S2G
S19
5, draw coal sample quality to be tested after, test control program begins to control that moisture ash content stove is heated and feed simultaneously drying nitrogen in burner hearth makes that atmosphere is nitrogen in the burner hearth, moisture ash content stove is added to 105 ℃-110 ℃, continue heating 50min under this temperature, this time can be provided with arbitrarily between 10-100min in test control program.In heating and thermostatic process, holder sample dish keeps rotation status.Behind the 50min, since No. 0 crucible, each crucible of weighing is with the gross mass G of coal sample to be tested under 105 ℃ of-110 ℃ of temperature
t, lasting circulation repeats to weigh, gross mass G in 10min
tReduce being no more than 0.0005g, or gross mass G
tNo longer weighing was arranged till when increasing.With this gross mass G
tBe sent to computing machine and preserve, the corresponding gross mass of crucible is G from No. 0 to No. 19
T0, G
T1G
T19
6, test control program calculates the moisture of coal sample to be tested by following formula.
Moisture Mad%=[[(G
z-G
t)-(G
0-G
T0)] ÷ G
s] * 100
7, moisture measurement finishes, test procedure control feeds dry oxygen in moisture ash content stove burner hearth, simultaneously moisture ash content stove is begun heating, furnace temperature is risen to 500 ℃ ± 10 ℃ being no less than in the time of 30min, under this temperature, keep 30min, then furnace temperature is risen to 815 ℃ ± 10 ℃ (can directly be raised to furnace temperature 815 ℃ ± 10 ℃ as the quick test of need, calcination 60min under this temperature (this time is adjustable).Then since each crucible of No. 0 crucible weighing quality G at this moment
KFrom 0 to No. 19 crucible corresponding quality this moment is G
K19, G
K1G
K19Consecutive weighings, G in continuous 10min
KMass change is no more than 0.0005g.
8, test control program calculates the ash content of coal sample to be tested by following formula.
Ash content Aad%=[[(G
k-G)-(G
K0-G
0)] ÷ G
s] * 100.
9, open moisture ash content bell, moisture ash content crucible is taken out, put into the empty crucible of volatile matter with cover.Cover moisture ash content bell, weigh the empty crucible quality of volatile matter with cover G automatically
P, the corresponding quality of empty crucible is G from No. 0 to No. 19
P0, G
P1G
P19
10, after the quality for the treatment of the empty crucibles of all volatile matters has claimed, open moisture ash content bell, in empty crucible, add coal sample to be tested, do not add coal sample in No. 0 crucible since No. 1 crucible.Cover moisture ash content bell, as the empty earthenware of step weighing of the empty earthenware quality of weighing and the gross mass Gr of coal sample to be tested, the corresponding gross mass of crucible is G from No. 1 to No. 19 then
R1, G
R2G
R19And this quality is sent to computing machine preserves.Test control program draws coal sample quality G to be tested with the quality that this quality deducts the sky crucible
b, the corresponding coal sample quality to be tested of crucible is G from No. 1 to No. 19
B0, G
B1G
B19
11, test procedure control is heated the volatile matter stove, moisture ash content stove keep always 105 ℃-110 ℃ temperature-resistant, be all over up to whole volatile matter test process, make the volatile matter furnace temperature be raised to 900 ± 10 ℃, and behind constant temperature 2min under this humidity (volatile matter stove humidity keep 900 ℃ ± 10 ℃ constant) always, holder sample dish with No. 0 position crucible be placed into sample transfer bar directly over stop.The sample transfer bar rising stops and timing when No. 0 crucible jack-up is sent to volatile matter burner hearth center (thermocouple location), sample transfer bar descends behind the 7min, No. 0 crucible is sent back on the holder sample dish, during this period, in the sample transfer bar uphill process and behind the crucible arrival volatile matter burner hearth center, fire box temperature can descend, test procedure can be controlled in the 3min and burner hearth to be returned to 900 ℃ ± 10 ℃ and remain unchanged, holder sample dish rotates again, repeat to send No. 0 crucible behind volatile matter burner hearth heating 7min, to get back to the step of holding in the palm on the sample dish, in order with No. 1 crucible, No. 2 crucible is all being got back to behind the volatile matter burner hearth heating 7min on the holder sample dish until all crucibles, ask this moment the sample dish to keep rotation, make all crucibles constant temperature 15min (this time is adjustable) under 105 ℃ of-110 ℃ of temperature in moisture ash content stove, afterwards, since each crucible of No. 0 crucible weighing quality G at this moment
f, crucible corresponding quality this moment is G from No. 0 to No. 19
F0, G
F1G
F19With this quality G
fBeing sent to computing machine preserves.
12, test control program calculates the volatile content of coal sample to be tested by following formula.
Volatile content Vad%=[[(G
r-G
f)-(G
P0-G
F0)] ÷ G
b] * 100-Mad.
13, test control program calculates the fixed carbon content of coal sample to be tested again by following formula.
Fixed carbon C=100-(Mad+Vad+Aad)
So far, the discontinuous testing process of the technical analysis of coal sample finishes.
Advantage of the present invention is: can automatically finish organic moisture, ash content, volatile matter and the fixed carbon such as coal, coke The test of four Industrial Analysis indexs and storage, printing test result. Test process need not manually to put to keep, the test of quickening Speed has improved efficiency.
Claims (4)
1, a kind of Industrial Analyzer for Coal Quality, comprise moisture ash content test furnace, the volatile matter test furnace, with control circuit and computer, the thermopair that connects with control circuit is housed respectively in two stoves, resistance wire, thermopair is given computer with temperature signal, computer connects through control circuit and adds resistance wire and driving motor and electronic balance in control two stoves, it is characterized in that the volatile matter test furnace is the uncovered cylindrical furnace cylindraceous of an end, and there is bell the upper end, lower end circular hole uncovered and on moisture ash content test furnace bell one side connects, two stove burner hearth vertical connections, vertical sample transfer bar, sample transfer bar and the liter installed in two burner hearth cavities of vertical connection, fall and detent mechanism A connection; Moisture ash content test furnace is one the box-like well shape stove of lid circle, sample weighting rod and holder sample dish are housed in the burner hearth cavity, sample weighting rod connects with electronic balance, and holder sample dish periphery has several to place the circular hole of sample crucible, and the center pole of having tried to get to the heart of a matter connects with ascending, descending, rotation and detent mechanism B.
2, Industrial Analyzer for Coal Quality according to claim 1 is characterized in that sample transfer bar ascending, descending and detent mechanism A are made up of worm gear, the worm screw ascending, descending C of mechanism and light sheets groove detent mechanism E: sample transfer bar and worm screw a
1Parallel, and be connected in worm gear piece b
1On, worm screw a
1With driving motor M
1Connect; The anti-dazzling screen that has notch is installed in worm gear piece b
1Side is near worm screw a
1Upper end installing and locating light groove.
3, Industrial Analyzer for Coal Quality according to claim 1, it is characterized in that holding in the palm the pole ascending, descending of sample disk center, rotation and detent mechanism B to be made up of worm gear, worm screw elevating mechanism D, light sheets groove detent mechanism F and rotating mechanism G, rotation fluted disc light groove detent mechanism H: worm gear, the worm screw ascending, descending D of mechanism are by worm gear piece b
2, worm screw a
2With driving motor M
2Connect and form worm screw a
2Be arranged in parallel and driving motor M with sample presentation disk center pole
2Connect; Rotating mechanism G is by holder sample disk center's pole and driving motor M
2Connect and form, rotating mechanism G is fixed on worm gear piece b
2On, light sheets groove detent mechanism F is installed on worm gear piece b by the anti-dazzling screen that has notch
2Side, location light groove at the bottom of support is installed on the analyser case on; Rotation fluted disc light groove detent mechanism H is installed on the holder sample disk center pole by the rotation fluted disc, and location light groove connects firmly on the rotating mechanism Building G to be formed.
4, the discontinuous assay method of a kind of coal industry analysis, this method is to measure the percent water content of ature of coal, ash content and volatile producibility, calculate fixed carbon content again, it is characterized in that: moisture, ash content, volatile matter is discontinuous mensuration in the described same Industrial Analyzer for Coal Quality of claim 1 successively, place in the moisture ash content crucible of a certain amount of coal sample on Industrial Analyzer for Coal Quality holder sample dish, after the automatic weighing coal sample of analyser quality, at 105 ℃-110 ℃, be connected with in the well type heating furnace of drying nitrogen and be heated to constant mass, calculate the percentage composition of moisture according to the mass loss of coal sample, then, well type heating furnace is changed logical oxygen and rate of warming in accordance with regulations continues to be heated to 815 ℃ ± 10 ℃ to continuing the coal sample heating, calcination is to constant mass, Mass Calculation ash content according to residue, afterwards, take out moisture, the ash content crucible, change to put and wave achromachia and divide crucible and place a certain amount of coal sample again in crucible, after the automatic weighing coal sample of analyser quality, coal sample is sent in the cylindrical heater that is warming up to 900 ℃ ± 10 ℃, accurately heating 7min accounts for the percentage of sample quality as volatile producibility to reduce quality.
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|---|---|---|---|
| CNA031246397A CN1514226A (en) | 2003-07-11 | 2003-07-11 | Coal quality industrial analysis non continuous determination method and its analysis instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031246397A CN1514226A (en) | 2003-07-11 | 2003-07-11 | Coal quality industrial analysis non continuous determination method and its analysis instrument |
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| CN1514226A true CN1514226A (en) | 2004-07-21 |
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ID=34239546
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|---|---|---|---|
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101430315B (en) * | 2008-12-05 | 2012-07-25 | 武汉钢铁(集团)公司 | Test method used for detecting coking coal |
| CN102937543A (en) * | 2012-06-26 | 2013-02-20 | 湖南三德科技发展有限公司 | Vertical rotary type coal sample fast dehumidifying device |
| CN107202901A (en) * | 2017-06-16 | 2017-09-26 | 廊坊市产品质量监督检验所 | The fast check system of the scattered coal of poor quality |
| CN107356707A (en) * | 2017-06-16 | 2017-11-17 | 廊坊市产品质量监督检验所 | A kind of single entry determination method quick industrial analyzer |
| CN107449691A (en) * | 2017-09-13 | 2017-12-08 | 长沙开元平方软件有限公司 | A kind of quick industrial analyzer |
| CN109239304A (en) * | 2018-11-12 | 2019-01-18 | 力鸿智信（北京）科技有限公司 | A kind of pit ash and volatile matter intelligent detection device and coal property test system |
| CN110006775A (en) * | 2019-04-02 | 2019-07-12 | 湖南三德盈泰环保科技有限公司 | A kind of clinker ignition loss tester and test method |
| CN110231251A (en) * | 2019-07-02 | 2019-09-13 | 内蒙古科技大学 | A kind of viscosimeter |
| CN110715875A (en) * | 2019-10-09 | 2020-01-21 | 鄂尔多斯职业学院 | Method for measuring ash content in coal |
-
2003
- 2003-07-11 CN CNA031246397A patent/CN1514226A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101430315B (en) * | 2008-12-05 | 2012-07-25 | 武汉钢铁(集团)公司 | Test method used for detecting coking coal |
| CN102937543A (en) * | 2012-06-26 | 2013-02-20 | 湖南三德科技发展有限公司 | Vertical rotary type coal sample fast dehumidifying device |
| CN107202901A (en) * | 2017-06-16 | 2017-09-26 | 廊坊市产品质量监督检验所 | The fast check system of the scattered coal of poor quality |
| CN107356707A (en) * | 2017-06-16 | 2017-11-17 | 廊坊市产品质量监督检验所 | A kind of single entry determination method quick industrial analyzer |
| CN107202901B (en) * | 2017-06-16 | 2023-08-04 | 廊坊市产品质量监督检验所 | Inferior bulk coal rapid detection system |
| CN107356707B (en) * | 2017-06-16 | 2024-01-26 | 廊坊市产品质量监督检验所 | Single-type rapid industrial analyzer adopting determination method |
| CN107449691A (en) * | 2017-09-13 | 2017-12-08 | 长沙开元平方软件有限公司 | A kind of quick industrial analyzer |
| CN109239304A (en) * | 2018-11-12 | 2019-01-18 | 力鸿智信（北京）科技有限公司 | A kind of pit ash and volatile matter intelligent detection device and coal property test system |
| CN110006775A (en) * | 2019-04-02 | 2019-07-12 | 湖南三德盈泰环保科技有限公司 | A kind of clinker ignition loss tester and test method |
| CN110231251A (en) * | 2019-07-02 | 2019-09-13 | 内蒙古科技大学 | A kind of viscosimeter |
| CN110715875A (en) * | 2019-10-09 | 2020-01-21 | 鄂尔多斯职业学院 | Method for measuring ash content in coal |
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