CN204142585U - The hot compressive strength online testing device of moulded coal - Google Patents
The hot compressive strength online testing device of moulded coal Download PDFInfo
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- CN204142585U CN204142585U CN201420363830.6U CN201420363830U CN204142585U CN 204142585 U CN204142585 U CN 204142585U CN 201420363830 U CN201420363830 U CN 201420363830U CN 204142585 U CN204142585 U CN 204142585U
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- pressing machine
- moulded coal
- compressing tablet
- pressing
- compressive strength
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- 239000003245 coal Substances 0.000 title claims abstract description 101
- 238000012360 testing method Methods 0.000 title claims abstract description 46
- 238000003825 pressing Methods 0.000 claims abstract description 85
- 238000010438 heat treatment Methods 0.000 claims abstract description 35
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000011261 inert gas Substances 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 24
- 238000001816 cooling Methods 0.000 claims description 16
- 230000002572 peristaltic effect Effects 0.000 claims description 8
- 239000003638 chemical reducing agent Substances 0.000 claims description 5
- 238000002309 gasification Methods 0.000 abstract description 13
- 238000010998 test method Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 7
- 239000000919 ceramic Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000571 coke Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 241000270295 Serpentes Species 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 239000011335 coal coke Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000012956 testing procedure Methods 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 210000005239 tubule Anatomy 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The utility model discloses the hot compressive strength online testing device of a kind of moulded coal, comprise brace table, brace table is provided with column, pressing machine portable plate column is equipped with, the upper end of column is fixed with pressing machine top board, the upper surface of pressing machine portable plate is provided with pressing machine pressing disc, the lower surface of pressing machine top board is provided with undertaking compressing tablet, two high-strength alumina ceramic rods are provided with between pressing machine pressing disc and undertaking compressing tablet, placed type coal sample between two high-strength alumina ceramic rods, two high-strength alumina ceramic rod peripheries are surrounded by open and close type heating furnace; Accept compressing tablet and be provided with pressing machine inductor and chilled water protection system, pressing machine pressing disc is provided with inert gas protection system, and pressing machine portable plate is provided with drive unit.On-line testing can be carried out to the hot compressive strength of industrial gasification moulded coal, the moulded coal hot strength test under industrial gasification condition can be simulated.
Description
Technical field
The utility model relates to a kind of moulded coal assessment technique, particularly relates to the hot compressive strength online testing device of a kind of moulded coal.
Background technology
Coal is through exploitation, washing, and particularly after the processing such as mixture, its technological property obtains optimization, but products obtained therefrom is many with a large amount of fine coal.The user's (as grate firing boiler, atmospheric fixed-bed gasification stove, lurgi pressure gasifier, converter etc.) using lump coal is needed for some, the fine coal of working good then is needed to be processed into " lump coal ", fine coal, coal slime, coal ash and coke breeze are processed into there is the patch fuel of certain physicochemical property or the technological process of raw material, be called coal powder formation, its product is called moulded coal or formed coke, general term moulded coal.The object of coal powder formation is not only to be become " lump coal " by fine coal, the more important thing is to change the original character of fine coal, overcome the defect that fine coal exists, thus fine coal heavy to poor quality, poor efficiency, pollution and coke breeze are converted into the high-quality raw material of industry and efficient, clean industry and domestic fuel, to meet the various demands of user.
Industrially belong to the fixed bed gasification type of furnace with lump coal, coke for the stove of fuel or raw material more, the coal gasifier of such as syngas for synthetic ammonia production (comprise normal pressure, pressurization, water-gas generators etc.), the producer gas generator of blast furnace, the industry such as machine-building and steam locomotive etc.Moulded coal can replace block Coal and coke for these fixed bed type of furnaces, and the quality of effect, and key is whether the quality of moulded coal itself meets the requirements.But the hot compressive strength of moulded coal relative to other moulded coal itself index more important.The hot compressive strength of moulded coal is the index that moulded coal can bear pressure under heating status, and the moulded coal of hot compressive strength difference just may all be pulverized after moulded coal just enters stove, thus makes the working of a furnace unstable, and the equipment that affects normally runs.In addition, the thermal stability of the moulded coal generally applied is directly related with the hot compressive strength of moulded coal, and the thermal stability of the higher then moulded coal of hot compressive strength of moulded coal is better.
Method of testing at present for the hot compressive strength of moulded coal mainly contains two classes:
The first kind is the method for testing of MT/T1073-2008 for the hot compressive strength of moulded coal, is also stove external test methods, and its concrete steps are:
1. moulded coal sample is put equably in people's 2 ~ 4 crucibles, build crucible cover;
2. muffle furnace is heated to 850 DEG C in advance, opens fire door, rapidly crucible is put into flat-temperature zone, close upper furnace door immediately and timing, accurately heat 30min.After crucible puts people, require that furnace temperature returns in 8min (850 ± 15) DEG C, and constant temperature, otherwise this time test calcellation;
3. from muffle furnace, take out crucible, be cooled to room temperature;
4. take out moulded coal, be placed on the force surface center of the testing machine of regulation one by one, with the uniform displacement speed one-way force applying of 10 ~ 15mm/min, the numerical value of testing machine display during record moulded coal cracking; Using the arithmetic mean of 10 moulded coal measured values as one group of measured value, be the hot compressive strength of moulded coal.
This kind of method of testing is the strength values of will test to obtain after moulded coal after heat treatment cool to room temperature, be equivalent to the cold conditions compressive strength of moulded coal after pyrolysis blink devolatilization, the operating mode of moulded coal in industry gasification furnace during actual use can not be reflected, the moulded coal index in this way obtained well can not instruct the industrial applications of moulded coal, has very large defect.
The method of testing of the hot compressive strength of Equations of The Second Kind moulded coal is nonstandard method of testing, and also referred to as stove build-in test method, the concrete steps of the method are:
1. moulded coal sample is put equably in people's 2 ~ 4 crucibles, moulded coal sample covers silica sand, builds crucible cover;
2. muffle furnace is heated to 850 DEG C in advance, opens fire door, rapidly crucible is put into flat-temperature zone, close upper furnace door immediately and timing, accurately heat 30min.After crucible puts people, require that furnace temperature returns in 8min (850 ± 15) DEG C, and constant temperature, otherwise this time test calcellation;
3. from muffle furnace, take out crucible, and use crucible clamp removing from mould coal immediately, be placed on the force surface center of the testing machine of regulation one by one, with the uniform displacement speed one-way force applying of 10 ~ 15mm/min, the numerical value of testing machine display during record moulded coal cracking.Using the arithmetic mean of 10 moulded coal measured values as one group of measured value, be the hot compressive strength of moulded coal.
Although such method of testing can simulate the operating mode in industry gasification furnace to a certain extent, because moulded coal is directly exposed in air when higher temperature test, moulded coal outer surface layer is made almost to be in fired state completely; And the impact such as tested person condition, the hot strength obtained and true hot compressive strength deviation obvious, in actual mechanical process, cause the index fluctuation of moulded coal very large, well can not instruct the industrial applications of moulded coal.
In sum, for the test of the hot compressive strength of moulded coal, there is no a kind of specialized equipment can simulated very well to moulded coal hot strength index under industrial gasification condition at present, and all to there is significant drawback in some existing method of testings can not instruct commercial production very well.The device that the utility model relates to does not need loaded down with trivial details testing procedure just well can simulate operating mode in the middle of industrial actual motion in stove, and the consumption of test is very low, and the hot compressive strength of therefore testing moulded coal has the features such as efficient, convenient, quick, accurate.Be particularly suitable for investigating moulded coal for indexs such as hot compressive strength during pressurized-gasification furnace.
Summary of the invention
The purpose of this utility model is to provide a kind of hot compressive strength online testing device of moulded coal can carrying out on-line testing to the hot compressive strength of industrial gasification moulded coal.
The purpose of this utility model is achieved through the following technical solutions:
The hot compressive strength online testing device of moulded coal of the present utility model, comprise brace table, described brace table is provided with column, pressing machine portable plate described column is equipped with, the upper end of described column is fixed with pressing machine top board, the upper surface of described pressing machine portable plate is provided with pressing machine pressing disc, the lower surface of described pressing machine top board is provided with undertaking compressing tablet, two high-strength alumina ceramic rods are provided with between described pressing machine pressing disc and undertaking compressing tablet, placed type coal sample between two high-strength alumina ceramic rods, two high-strength alumina ceramic rod peripheries are surrounded by open and close type heating furnace,
Described undertaking compressing tablet is provided with pressing machine inductor and chilled water protection system, and described pressing machine pressing disc is provided with inert gas protection system, and described pressing machine portable plate is provided with drive unit and control system thereof, and described open and close type heating furnace is provided with instrument temperature-controlling system.
The technical scheme provided as can be seen from above-mentioned the utility model, the hot compressive strength online testing device of the moulded coal that the utility model embodiment provides, owing to being provided with two high-strength alumina ceramic rods between pressing machine pressing disc and undertaking compressing tablet, placed type coal sample between two high-strength alumina ceramic rods, two high-strength alumina ceramic rod peripheries are surrounded by open and close type heating furnace, on-line testing can be carried out to the hot compressive strength of industrial gasification moulded coal, the moulded coal hot strength test under industrial gasification condition can be simulated.
Accompanying drawing explanation
The structural representation of the hot compressive strength online testing device of moulded coal that Fig. 1 provides for the utility model embodiment.
Fig. 2 a and Fig. 2 b is respectively the structural representation of the halved body of open and close type heating furnace in the utility model embodiment.
In figure:
1. pressing machine scrambler, 2. pressing machine motor and speed reduction unit thereof, 3. pressing machine lifting column and ball screw thereof, 4. pressing machine portable plate, 5. high-strength alumina ceramic rod, 6. heating furnace burner hearth heating zone, 7. moulded coal sample, 8. open and close type heating furnace, 9. pressing machine top board, 10. helical annular cooling worm, 11. accept compressing tablet chilled water duct, 12. peristaltic pumps, 13. ring pipe gas distributors, 14. gas pressure reducers, 15. spinner-type flowmeters, 16. high-pressured air cylinders.
Embodiment
To be described in further detail the utility model embodiment below.
The hot compressive strength online testing device of moulded coal of the present utility model, its preferably embodiment be:
Comprise brace table, described brace table is provided with column, pressing machine portable plate described column is equipped with, the upper end of described column is fixed with pressing machine top board, the upper surface of described pressing machine portable plate is provided with pressing machine pressing disc, the lower surface of described pressing machine top board is provided with undertaking compressing tablet, two high-strength alumina ceramic rods are provided with between described pressing machine pressing disc and undertaking compressing tablet, placed type coal sample between two high-strength alumina ceramic rods, two high-strength alumina ceramic rod peripheries are surrounded by open and close type heating furnace;
Described undertaking compressing tablet is provided with pressing machine inductor and chilled water protection system, and described pressing machine pressing disc is provided with inert gas protection system, and described pressing machine portable plate is provided with drive unit and control system thereof, and described open and close type heating furnace is provided with instrument temperature-controlling system.
Described chilled water protection system comprises helical annular cooling worm and accepts compressing tablet chilled water duct, and described helical annular cooling worm is connected with peristaltic pump by water pipe with undertaking compressing tablet chilled water duct.
Described inert gas protection system comprises ring pipe gas distributor, and described ring pipe gas distributor is connected with high-pressured air cylinder by tracheae, and described tracheae is provided with gas pressure reducer, spinner-type flowmeter.
Described drive unit comprises pressing machine motor and speed reduction unit thereof, and described speed reduction unit is connected with ball screw, and described ball screw engages with pressing machine lifting column, and described pressing machine lifting column is connected with described pressing machine portable plate.
Described pressing machine motor is provided with pressing machine scrambler.
The proving installation of the hot compressive strength of moulded coal of the present utility model, can realize the on-line testing of the hot compressive strength of moulded coal, thus accurately for suitability for industrialized production provides required performance parameter.
Specific embodiment:
As shown in Figure 1, Figure 2 shown in a, Fig. 2 b, primarily of Multifunctional press and control system, open and close type heating furnace and instrument temperature-controlling system, inert gas protection system and pressing machine inductor protection water-cooling system four part composition.
The Multifunctional press system of described proving installation is for being suitable for the processing of moulded coal hot compressive strength on-line testing non-standard de-sign, mainly comprise the parts such as motor, speed reduction unit, portable plate, base plate, top board, ball screw, lifting column, shaft bearing plate column, stop, scrambler, platen and pressure inductor, for coordinating the hot compressive strength of open and close type heating furnace test moulded coal, need high strength high temperature oxidation resistant aluminium ceramic rod two.
In described proving installation, Press Control System comprises main frame, display and carries pressure test software, under cut-point measure pattern, pressure/pressure in computing machine meeting automatic drafting moulded coal loading process and the relation of the relation of test duration, pressure/pressure and pressing disc stroke, test can be stopped in the moment that moulded coal destroys, and can record and show maximum pressure/pressure that moulded coal bears before breaking.
In described proving installation, open and close type heating furnace and instrument temperature-controlling system mainly comprise heating furnace, temperature control Displaying Meter, thermopair and wire etc.; Heating furnace comprises again burner hearth, heating furnace silk and furnace shell etc., and burner hearth is reducing burner hearth, and heating zone is of a size of Ф 70 × 170mm, and burner hearth heat preservation zone is identical two sections, lays respectively at the top and bottom of burner hearth heating zone, and it is of a size of Ф 51 × 40mm.
In described proving installation, inert gas protection system comprises some parts and is connected gas line, has mainly contained high-pressured air cylinder, gas pressure reducer, gas rotameter, ring pipe gas distributor and stainless steel gas fluid line; Ring pipe gas distributor ring internal diameter is Ф 51mm, and endless tube internal diameter is Ф 3mm, inner ring is evenly distributed with the venthole 8 of Ф 2mm.
In described proving installation, the effect of pressing machine inductor protection water-cooling system is protection pressing machine inductor, prevents from causing pressing machine inductor to damage or malfunctioning due to heating furnace high-temperature radiation.The critical piece of pressing machine inductor protection water-cooling system has accepts compressing tablet, helical annular cooling worm, peristaltic pump, rubber water pipe and metallic water pipe; Accept compressing tablet and directly screw in inductor bottom thread by screw, it is of a size of Ф 50 × 100mm, and there is the outer silk of M12 × 30mm one end, has the duct of two Ф 6 × 50mm in undertaking compressing tablet upper end, for passing into water quench compressing tablet protection inductor; Helical annular cooling worm is that the metal thin tube of flexible is coiled into, and tubule is of a size of Ф 5 × 1mm, and helical annular cooling worm height is 100mm, just in time can entangle undertaking compressing tablet completely; Peristaltic pump mainly provides chilled water to circulate power what accept that the inner and helical annular of compressing tablet cools snake inside; furnace radiant is taken away at the heat accepting compressing tablet by chilled water; directly can protect pressure transducer, make it be in room temperature state all the time and normally work.
The utility model can realize the test of moulded coal hot strength to carry out under closest to industrial gasification condition, and used equipment and instrument are all through appropriate design and automaticity is very high, so this proving installation has compared significant raising in the on-line testing of moulded coal hot compressive strength; If not only consider pressure values, then moulded coal can be processed into arbitrary shape, institute's value is the hot Maximal compression force of moulded coal.In sum, the beneficial effects of the utility model can implement on-line testing to the hot compressive strength of moulded coal, can reflect the applying working condition of industrial shaping coal like this, has directive significance to industrial shaping coal gasification, and achieve safe, convenient, accurately test.
The principle of work of specific embodiment is:
1) moulded coal is placed between two aluminium oxide ceramics rods on Multifunctional press (pressing machine test pattern is breakpoint pattern) platen; In the present embodiment, aluminium oxide ceramics rod 5 is two, and a wherein longer diameter is 50mm, and length is 112mm, a shorter diameter is 50mm, and length is 80mm, longer one under, placed type coal sample 7 at its upper end, then places a shorter aluminium oxide ceramics rod in moulded coal top;
2) mobile open and close type heating furnace, aluminium oxide ceramics rod and moulded coal thereof are placed in heating furnace, and the opening and closing of fastening heating furnace buckles; Open and close type heating furnace is furnished with the support platform of reinforcement welding, and this support platform is fixed on pressing machine portable plate 4;
3) high-pressured air cylinder 16 valve is opened, open gas pressure reducer 14, airshed to 100 ~ 200ml/min is regulated by spinner-type flowmeter 15, gas enters heating furnace through ring pipe gas distributor 13 bottom open and close type heating furnace, regulate heating furnace temp controlled meter to the temperature required and used time, the slowest 20min reaches temperature required; Ring pipe gas distributor 13 internal diameter is Ф 51mm, be a bit larger tham the diameter 50mm of pressing machine pressing disc, just in time can be enclosed within pressing machine pressing disc, endless tube internal diameter is Ф 3mm, inner ring is evenly distributed with the venthole 8 of Ф 2mm, and arrangement same level face, the aperture of 8 ventholes becomes 30 degree of angles, is conducive to that gas uniform is smooth and easy to be passed in burner hearth.Ring pipe gas distributor was enclosed within pressing machine pressing disc before pressing machine top, if when pressing machine is used for other purposes, this ring pipe gas distributor and junction line thereof are taken off at placement open and close type heating furnace;
4) regulate heating furnace temp controlled meter to the temperature required and used time.After setting up temperature control instrument, run peristaltic pump 12, make recirculated cooling water pass into helical annular cooling worm 10 by metallic water pipe and accept in compressing tablet chilled water duct 11; Accept compressing tablet and directly screw in inductor bottom thread by screw, it is of a size of Ф 50 × 100mm, and there is the outer silk of M12 × 30mm one end, has the duct of two Ф 6 × 50mm in undertaking compressing tablet upper end, and 2 water-cooled ducts are positioned at and meet dish 1cm place, upper end and 4cm place.Peristaltic pump mainly provides the power of chilled water accepting compressing tablet inside and the flowing of helical annular cooling worm inner loop, water was divided into two-way before not entering helical annular cooling worm after peristaltic pump supercharging and accepting platen chilled water duct, helical annular cooling worm is walked on one tunnel, two chilled water ducts on platen are walked to accept in one tunnel, flow back in container respectively by being combined into a road after cooling worm and chilled water duct.
5) temperature runs Multifunctional press after reaching test condition, test pattern is transformed into cut-point measure pattern, and click and start testing button, computer will automatically complete test, record and preserve test result;
6) click the decline button on pressing machine control computer, make pressing machine compression leg decline 1cm, then open open and close type heating furnace fast and take out the moulded coal broken, change rapidly next moulded coal sample, close heating furnace, return to after test condition until instrument temperature, then hit testing button is tested;
7) after all tests terminate, close gas, close electric furnace and stop heating, naturally cool to after room temperature until equipment and stop recirculated cooling water.
The above; be only the utility model preferably embodiment; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (2)
1. the hot compressive strength online testing device of moulded coal, it is characterized in that, comprise brace table, described brace table is provided with column, pressing machine portable plate described column is equipped with, the upper end of described column is fixed with pressing machine top board, the upper surface of described pressing machine portable plate is provided with pressing machine pressing disc, the lower surface of described pressing machine top board is provided with undertaking compressing tablet, two high-strength alumina ceramic rods are provided with between described pressing machine pressing disc and undertaking compressing tablet, placed type coal sample between two high-strength alumina ceramic rods, two high-strength alumina ceramic rod peripheries are surrounded by open and close type heating furnace,
Described undertaking compressing tablet is provided with pressing machine inductor and chilled water protection system, and described pressing machine pressing disc is provided with inert gas protection system, and described pressing machine portable plate is provided with drive unit and control system thereof, and described open and close type heating furnace is provided with instrument temperature-controlling system;
Described inert gas protection system comprises ring pipe gas distributor, and described ring pipe gas distributor is connected with high-pressured air cylinder by tracheae, and described tracheae is provided with gas pressure reducer, spinner-type flowmeter;
Described drive unit comprises pressing machine motor and speed reduction unit thereof, and described speed reduction unit is connected with ball screw, and described ball screw engages with pressing machine lifting column, and described pressing machine lifting column is connected with described pressing machine portable plate;
Described pressing machine motor is provided with pressing machine scrambler.
2. the hot compressive strength online testing device of moulded coal according to claim 1; it is characterized in that; described chilled water protection system comprises helical annular cooling worm and accepts compressing tablet chilled water duct, and described helical annular cooling worm is connected with peristaltic pump by water pipe with undertaking compressing tablet chilled water duct.
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| CN201420363830.6U CN204142585U (en) | 2014-07-02 | 2014-07-02 | The hot compressive strength online testing device of moulded coal |
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| CN201420363830.6U CN204142585U (en) | 2014-07-02 | 2014-07-02 | The hot compressive strength online testing device of moulded coal |
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| CN204142585U true CN204142585U (en) | 2015-02-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916676A (en) * | 2021-09-29 | 2022-01-11 | 东北大学 | Device and method for testing high-temperature strength of iron-making raw material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916676A (en) * | 2021-09-29 | 2022-01-11 | 东北大学 | Device and method for testing high-temperature strength of iron-making raw material |
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