CN108195746A - A kind of experimental rig and method for evaluating refractory material alkali resistant metal attack performance - Google Patents
A kind of experimental rig and method for evaluating refractory material alkali resistant metal attack performance Download PDFInfo
- Publication number
- CN108195746A CN108195746A CN201711387687.9A CN201711387687A CN108195746A CN 108195746 A CN108195746 A CN 108195746A CN 201711387687 A CN201711387687 A CN 201711387687A CN 108195746 A CN108195746 A CN 108195746A
- Authority
- CN
- China
- Prior art keywords
- refractory material
- experimental rig
- furnace
- alkali
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Biochemistry (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Ecology (AREA)
- Environmental Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Environmental & Geological Engineering (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention discloses a kind of experimental rig and method for evaluating refractory material alkali resistant metal attack performance, which includes 1700 DEG C of pyroreaction tube furnaces of BTML, double crucible, gas cylinder, thermocouple, air inlet pipe, air outlet pipe, SRS13A precision temperature controllers.The actual conditions that the present invention can be reacted with analog blast furnace inside alkali metal with refractory material, the quality of overall merit refractory material alkali resistant metal attack performance.The present invention draws a conclusion according to Ke Laopeilong Clausius equations and thermodynamic analysis, and alkali vapor does not react under cupola well condition of high voltage with refractory material, and alkali metal is can react to form the cenotypes such as leucite, kaliophilite with refractory material during liquid.
Description
Technical field
The invention belongs to fire resisting material fields, and in particular to a kind of experiment for evaluating refractory material alkali resistant metal attack performance
Device and method.
Technical background
The longevity of blast furnace crucibe runs blast furnace steadily in the long term to be played a crucial role, in all of blast furnace crucibe breakage
In multifactor, the erosion of alkali metal is an important influence factor, this at home and abroad in a large amount of blast furnace Investigation on damage
Abundant verification is obtained.In cupola well, alkali metal mainly causes to corrode by carrying out the refractory materials such as brick fuel infiltration, when serious
Brittle layer is formed in blast furnace.For the refractory material for selecting alkali resistance good, it is necessary to select a kind of method to refractory material into
Row evaluation, is compared and analyzed by effective data.
GB/T has been drafted for refractory material alkali resistance method for measuring, refractory material research institute of Sinosteel Corporation etc. at present
14983-2008 national standards, i.e.,《Refractory material alkali resistance experimental method》.It is that 20mm or so sizes are cut out out of refractory brick
Cube, polished each face and use vernier caliper measurement size, charcoal, potassium carbonate and sample are then put into crucible
In, it is attached by crucible cover, is warming up to 1100 DEG C of heat preservation 30h after nitrogen is passed through in stove, fire resisting is observed after experiment
The macro morphology and microscopic appearance of brick measure the compression strength change rate of refractory brick.But this method has the following disadvantages：(1)
Test method in national standard is the alkali resistant metallicity of the reaction evaluating refractory material by alkali vapor and refractory material, but logical
Thermodynamic analysis is crossed it is found that in blast furnace crucibe, alkali vapor can't directly react with refractory material, and be to diffuse into resistance to
It could react to form cenotype with refractory material after being liquefied after fiery material internal, state's calibration method and actual conditions in blast furnace are serious
It is not inconsistent；(2) it after testing, is only characterized, is characterized from macro morphology, microscopic appearance, compression strength change rate in national standard
Means are very little, it is impossible to the alkali-resisting quality of overall merit refractory material, it should increase mass change, volume change, EDS
The means such as analysis carry out thoroughly evaluating refractory material alkali resistance quality.
Previous viewpoint thinks that alkali metal is by alkali metal gas and refractory material to the erosion of refractory material in blast furnace
What reaction carried out, therefore we have carried out thermodynamic analysis to K steams with reacting for brick fuel.K steams are in reaction in furnace in stove
K2O、K2CO3
Steam is in reaction in furnace K2O、K2CO3。 ΔG2
=-213800+152.16T+RTln (1/ ((Pk/P θ)2×(Pco/Pθ)3), when T=750 DEG C, the critical K of above formula reaction steams
For qi leel pressure for 52.7KPa and 16.2KPa, this is that impossible occur in practical blast furnace, therefore K steams will not directly and fire resisting
Material reaction destroys refractory material.The liquefaction item of potassium vapor under high pressure is calculated according to Ke Laopeilong-Clausius equation
Part, it is known that potassium vapor can liquefy under cupola well condition of high voltage under conditions of less than 932 DEG C.Thus we again to liquid potassium with
The reaction of refractory material carries out thermodynamic analysis, when temperature is 750 DEG C, for liquid potassium and refractory material generation leucite, potassium
The reaction of nepheline etc., their Δ G ＜ 0, shows that the reaction can occur.Therefore it may be concluded that alkali metal quilt in stove
Reduction forms alkali metal vapour, and alkali vapor will not directly react with refractory material, but penetrates into bricking by gap, in height
Under the action of the cooling of stove cupola well, alkali vapor starts to liquefy and be constantly enriched with, and starts to expand after then forming cenotype with substances such as CO.
Invention content
The present invention is measured in national standard alkali vapor method in the alkali-resisting deficiency of refractory material, it is proposed that in a kind of analog blast furnace
The new method that portion's actual conditions refractory material alkali resistance measures.
A kind of experimental rig for evaluating refractory material alkali resistant metal attack performance, including gas cylinder, air inlet pipe, spinner
Meter, air outlet pipe, bell, corundum furnace tube, molybdenum filament coil, double crucible, thermocouple, FP93 tables, voltmeter, ammeter, indicator light,
Operation key, conducting wire；
The gas cylinder is filled with high-purity argon gas, and air inlet pipe one end is connected to high-purity argon gas, and the other end is connected to tube furnace,
Centre controls flow with spinner flowmeter；
Tube furnace top adds bell, and centre bores an aperture, air outlet pipe connected, so as to the row of exhaust gas in experimentation
Go out；
The corundum furnace tube is located at stove center, is the main space reacted, and periphery is molybdenum filament coil, is heating
Main element；
The double crucible, is placed in corundum furnace tube centre, and crucible bottom monitors temperature in real time equipped with thermocouple；
SRS13A precision temperature controllers are built, are led including the FP93 tables, voltmeter, ammeter, indicator light, operation
Line is wired to stove lower part, and full-automation accurately controls heating, constant temperature, the cooling operation of furnace body, and the heating temperature difference is little
In 5 DEG C；
The double crucible, crucible and crucible cover are attached by screw thread, and the inside is placed with porous gasket, for placing
Refractory material.
On the one hand it is for the actual conditions inside blast furnace, to behavior of the alkali metal in stove that the useful achievement of the present invention, which is,
Thermodynamic analysis is carried out, develops the experimental method of new evaluation refractory material alkali resistant metal attack performance.First so that alkali is golden
Belong to and become gaseous state in high temperature, carry out heat preservation and alkali vapor is fully entered along hole inside refractory material, then dropped
Temperature, alkali vapor liquefy inside refractory material, are kept the temperature, and reaction is allowed fully to carry out.On the other hand, after experiment, increase
Add mass change, volume change, EDS analysis etc. more characterizing methods, overall merit refractory material it is alkali-resisting excellent
It is bad.Highly effective guiding opinion can be provided the selection of blast furnace refractory material by the present invention.
Description of the drawings
Fig. 1 is the structure chart of heretofore described experimental rig；
Fig. 2 is heretofore described double crucible structure chart；
Wherein, 1- gas cylinders；2- air inlet pipe；3- spinner flowmeters；4- air outlet pipes；5- bells；6- corundum furnace tubes；
7- molybdenum filament coils；8- double crucibles；9- thermocouples；10-FP93 tables；11- voltmeters；12- ammeters；13- is indicated
Lamp；14- operations are built；15- conducting wires, 81- Crucible bodies；82- crucible covers；83- porous gaskets.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
As shown in Figure 1, the present invention provides a kind of experimental rig for evaluating refractory material alkali resistant metal attack performance, the dress
It puts including gas cylinder 1；Air inlet pipe 2；Spinner flowmeter 3；Air outlet pipe 4；Bell 5；Corundum furnace tube 6；Molybdenum filament coil 7；Double crucible 8；
Thermocouple 9；FP93 tables 10；Voltmeter 11；Ammeter 12；Indicator light 13；Operation key 14；Conducting wire 15.The gas cylinder 1 is in store
High-purity argon gas is connected by air inlet pipe 2, spinner flowmeter 3 with tube furnace, and spinner flowmeter 3 is connected in gas cylinder 1 and tube furnace
Between, flow control is carried out to gas, an aperture is bored among the bell 5, penetrates air outlet pipe 4 among hole, the molybdenum filament coil 7 is
The heating element of tube furnace is distributed in around corundum furnace tube 6, and the flat-temperature zone of boiler tube is placed double crucible 8, and bottom is placed with thermoelectricity
Even 9 for measuring actual temperature in stove, and be reflected on FP93 tables 10, and 10 right side of FP93 tables is respectively voltmeter 11 and electricity
Flow table 12, for monitoring the voltage and current in experimentation, the FP93 tables 10, voltmeter 11 and ammeter 12 are separately below
For indicator light 13, the state of operation key 14 is reflected, console lower part is connected by conducting wire 15 with tube furnace.Used in experiment
SRS13A precision temperature controllers include FP93 tables 10, voltmeter 11, ammeter 12, indicator light 13, operation key 14, conducting wire 15.
2. test concrete operation step.
(1) from one block of complete refractory brick, refractory material is sampled at random, refractory material sample is cut into the length of side is
The cube of 15mm, totally three.Then by cutting, polishing, polishing.It is required that specimen surface is smooth, corner angle are clearly demarcated, it is no larger broken
Damage.Then sample is put into drying box dry 12h.Three samples are taken out after the completion of dry, sample mass is carried out with balance
It weighs, sample length is measured with vernier caliper.Sample is placed on scale again and is taken pictures.
(2) before carrying out alkali metal experiment, one group of blank assay is carried out first, can be compared with experiment below.
(3) detection of room temperature compression strength is carried out to the sample before reaction, SEM-EDS is analyzed.
(4) 0.4423g K are weighed2CO3, 0.1154g activated carbon, be placed in agate mortar and mixed after the completion of weighing
30min (granularity is less than 100 mesh), reagent is positioned in the drying box of 75~100 DEG C of temperature 2~3 hours dry.Reagent contains
Amount is matched according to alkali metal content, generally makes activated carbon excessive, so as to allow K2CO3Reaction completely.
(5) reagent is put into double crucible, it is evenly placed upon crucible bottom.Porous gasket is put again,
Three refractory material samples are placed above in gasket.Crucible cover is connected by screw thread with crucible again.
(6) argon gas gas cylinder is opened, setting flow is calculated as 2.0l/min, leads to 60min argon gas to being purged in stove, this can be with
Argon gas is made to prevent crucible when early period, temperature was relatively low from being aoxidized full of in stove.
(7) double crucible is put into corundum furnace tube, it is made to be placed on centre position, pipe side wall is prevented to be bonded.
(8) open SRS13A precision temperature controllers, set temperature program, heating rate and rate of temperature fall be set as 5 DEG C/
min.The first step, is warming up to 300 DEG C from 0 DEG C, and the heating-up time is 60min, pid value 1；Second step is warming up to 1200 from 300 DEG C
DEG C, the heating-up time is 180min, pid value 3；Third walks, 1200 DEG C of heat preservations, soaking time 120min, pid value 3；4th
Step, cools to 750 DEG C from 1200 DEG C, and temperature fall time is 90min, pid value 1；5th step, 750 DEG C of heat preservations, keeps the temperature 240min,
Pid value is 2；6th step, cools to 300 DEG C from 750 DEG C, and temperature fall time is 90min, pid value 1；7th step, from 300 DEG C of drops
For temperature to 0 DEG C, temperature fall time is 60min, then remaining 33 step temperature is set as 0 DEG C, time 0min by pid value 1.Program
After being provided with, the program of setting is checked.
(9) start heating key.Flowmeter is set as 1.0l/min, after 2min, 3~5s of long-press RUN keys starts tube furnace.
(10) after testing, stop ventilation, sample is taken out, close tube furnace.
(11) sample is cleaned, removes the ash on surface.Sample is weighed with balance, with vernier caliper to sample
Size is measured, and sample is placed on scale and is taken pictures.
(12) macro morphology before and after observation specimen reaction changes, mass change, volume before and after calculating specimen reaction
Change rate can also change different alkali metal contents, observe the curve that they change, sample is weightening or subtracts after analysis reaction
Weight, while verify whether consistent with thermodynamic analysis results.
(13) one of sample is done into compression strength detection, calculates compression strength change rate before and after reaction, it is known that
Alkali metal is to the extent of the destruction of refractory material compression strength.
(14) one of sample is made tem sample, carries out SEM-EDS analyses, the microcosmic knot of sample after observing response
Structure analyzes the substance of reaction formation, the distribution of line scan of going forward side by side observation alkali metal from outside to inside, Surface scan observation by EDS
The distribution of alkali metal in entire surface, with this apparent alkali metal to the erosion mechanism of refractory material and to structural damage degree.
The foregoing is merely the preferred embodiments of the present invention, are not intended to limit the invention, all theories and original in the present invention
Within then, any modification, equivalent substitution and improvements done should be included within the scope of the present invention.
Claims (8)
1. a kind of experimental rig for evaluating refractory material alkali resistant metal attack performance, which is characterized in that the experimental rig includes
Gas cylinder (1)；Air inlet pipe (2)；Spinner flowmeter (3)；Air outlet pipe (4)；Bell (5)；Corundum furnace tube (6)；Molybdenum filament coil (7)；It is double
Crucible (8)；Thermocouple (9)；FP93 tables (10)；Voltmeter (11)；Ammeter (12)；Indicator light (13)；Operation key (14)；It leads
Line (15), the gas cylinder (1) high-purity argon gas in store, is connected by air inlet pipe (2), spinner flowmeter (3) with tube furnace, is turned
Subflow gauge (3) is connected on gas cylinder (1) and flow control among tube furnace, is carried out to gas, and an aperture is bored among the bell (5),
Through air outlet pipe (4) among hole, the molybdenum filament coil (7) is the heating element of tube furnace, is distributed in corundum furnace tube (6) week
It encloses, the flat-temperature zone of boiler tube is placed double crucible (8), and bottom is placed with thermocouple (9) for measuring actual temperature in stove, and reflects
It is respectively voltmeter (11) and ammeter (12) on FP93 tables (10), on the right side of the FP93 tables (10), was tested for monitoring
Voltage and current in journey, the FP93 tables (10), voltmeter (11) and ammeter (12) are separately below indicator light (13), instead
The state of operation key (14) is reflected, console lower part is connected by conducting wire (15) with tube furnace.SRS13A used in experiment is accurate
Temperature controller includes FP93 tables (10), voltmeter (11), ammeter (12), indicator light (13), operation key (14), conducting wire
(15)。
2. experimental rig according to claim 1, which is characterized in that the double crucible (8) including Crucible body (81),
Crucible cover (82) and porous gasket (83), the porous gasket (3) are placed in Crucible body (1), by Crucible body (1) with
Crucible cover (2) connects.
3. experimental rig according to claim 1, which is characterized in that experimental rig is equipped with gas cylinder, is supplied into stove
High-purity argon gas maintains inert atmosphere during experiment, prevents refractory material from being aoxidized, and high-purity argon gas is led in experimentation and is protected
Shield, by air inlet pipe (2) into stove.
4. experimental rig according to claim 1, which is characterized in that among the air inlet pipe (2) and corundum furnace tube (6) also
A spinner flowmeter (3) is connected to, for easily adjusting gas flow.
5. experimental rig according to claim 1, which is characterized in that tube furnace top is furnished with air outlet pipe (4), can be by reality
It tests outside the exhaust gas discharge furnace body generated in the process.
6. experimental rig according to claim 1, which is characterized in that the additional bell (5) of corundum furnace tube (6),
For making to form closed space in stove, prevent the argon gas being passed through from largely escaping, the corundum furnace tube (6) is placed in furnace body center,
It is main reaction compartment.
7. experimental rig according to claim 1, which is characterized in that tube furnace is equipped with the molybdenum filament coil (7) of heating, institute
The heating temperature range of high temperature furnace is stated at 0~1750 DEG C.And the flat-temperature zone of one section of 100mm can be formed in stove.
8. a kind of test method for evaluating refractory material alkali resistant metal attack performance, based on described in one of the claims 1-7
Experimental rig, which is characterized in that the method first causes alkali metal to become gaseous state in high temperature, carries out heat preservation and enables alkali vapor
Fully enter inside refractory material along hole, then cool down, alkali vapor liquefies inside refractory material, is protected
Temperature allows react fully carrying out, and on the other hand, after experiment, increases the characterization side that mass change, volume change, EDS are analyzed
Method, the alkali-resisting quality of overall merit refractory material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711387687.9A CN108195746B (en) | 2017-12-20 | 2017-12-20 | Test device and method for evaluating alkali metal corrosion resistance of refractory material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711387687.9A CN108195746B (en) | 2017-12-20 | 2017-12-20 | Test device and method for evaluating alkali metal corrosion resistance of refractory material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108195746A true CN108195746A (en) | 2018-06-22 |
| CN108195746B CN108195746B (en) | 2021-03-30 |
Family
ID=62577009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711387687.9A Active CN108195746B (en) | 2017-12-20 | 2017-12-20 | Test device and method for evaluating alkali metal corrosion resistance of refractory material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108195746B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624794A (en) * | 2021-07-05 | 2021-11-09 | 北京科技大学 | Test device and method for evaluating molten iron corrosion resistance of blast furnace carbon brick |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03291550A (en) * | 1990-04-10 | 1991-12-20 | Harima Ceramic Co Ltd | Corrosion testing method for refractory material |
| JPH06229906A (en) * | 1993-02-02 | 1994-08-19 | Hitachi Zosen Corp | Evaluating apparatus for corrosion resistance of refractory material |
| KR20010057415A (en) * | 1999-12-23 | 2001-07-04 | 홍상복 | Apparatus for measuring the wear speed of refractory |
| CN101762450A (en) * | 2009-12-28 | 2010-06-30 | 莱芜钢铁股份有限公司 | Refractory material slag resistance test device |
| CN102183477A (en) * | 2010-12-13 | 2011-09-14 | 河北省首钢迁安钢铁有限责任公司 | Method for simulation test of influence of alkali metal on coke degradation |
| CN203432929U (en) * | 2013-09-06 | 2014-02-12 | 内蒙古科技大学 | High-temperature solidifying phase transformation law measurement experiment device |
| CN104297282A (en) * | 2014-10-27 | 2015-01-21 | 武汉钢铁(集团)公司 | Coke thermal property analyzing method and device for realizing method |
| CN106338591A (en) * | 2016-08-02 | 2017-01-18 | 华北理工大学 | Apparatus for detecting reactivity of alkali metal on coke and intensity influence after reaction |
-
2017
- 2017-12-20 CN CN201711387687.9A patent/CN108195746B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03291550A (en) * | 1990-04-10 | 1991-12-20 | Harima Ceramic Co Ltd | Corrosion testing method for refractory material |
| JPH06229906A (en) * | 1993-02-02 | 1994-08-19 | Hitachi Zosen Corp | Evaluating apparatus for corrosion resistance of refractory material |
| JP2809572B2 (en) * | 1993-02-02 | 1998-10-08 | 日立造船株式会社 | Erosion resistance evaluation equipment for refractories |
| KR20010057415A (en) * | 1999-12-23 | 2001-07-04 | 홍상복 | Apparatus for measuring the wear speed of refractory |
| CN101762450A (en) * | 2009-12-28 | 2010-06-30 | 莱芜钢铁股份有限公司 | Refractory material slag resistance test device |
| CN102183477A (en) * | 2010-12-13 | 2011-09-14 | 河北省首钢迁安钢铁有限责任公司 | Method for simulation test of influence of alkali metal on coke degradation |
| CN203432929U (en) * | 2013-09-06 | 2014-02-12 | 内蒙古科技大学 | High-temperature solidifying phase transformation law measurement experiment device |
| CN104297282A (en) * | 2014-10-27 | 2015-01-21 | 武汉钢铁(集团)公司 | Coke thermal property analyzing method and device for realizing method |
| CN106338591A (en) * | 2016-08-02 | 2017-01-18 | 华北理工大学 | Apparatus for detecting reactivity of alkali metal on coke and intensity influence after reaction |
Non-Patent Citations (1)
| Title |
|---|
| 张建良等: "高炉炉缸耐火材料抗渣侵蚀性及挂渣性", 《钢铁》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624794A (en) * | 2021-07-05 | 2021-11-09 | 北京科技大学 | Test device and method for evaluating molten iron corrosion resistance of blast furnace carbon brick |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108195746B (en) | 2021-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108918330B (en) | Device and method for researching influence of alkali metal on coke reactivity under conditions of water vapor and carbon dioxide | |
| CN106124357B (en) | A kind of multi-functional coal sample heating and oxidation rule test platform of automatic sampling | |
| CN105807029B (en) | Coal spontaneous combustion characteristic detecting apparatus based on thermogravimetric | |
| CN106501125A (en) | Gas absorption desorption test device and method of testing | |
| CN108279246A (en) | A kind of experimental rig and method of evaluation refractory material anti-hot metal erosion energy | |
| CN110082392A (en) | High pressure explosion limit measuring device and molar fraction air distributing method based on the device | |
| CN102937606A (en) | Explosion limit testing device of combustible gas under high-temperature condition | |
| CN108593700A (en) | It is a kind of simulation coke blast furnace melting with soft deterioration process test method and simulator | |
| US20100192663A1 (en) | Method for testing abrasion resistance of a test specimen | |
| CN108195746A (en) | A kind of experimental rig and method for evaluating refractory material alkali resistant metal attack performance | |
| US20100192664A1 (en) | Test device for refractory material | |
| CN106680417A (en) | Device and method for rapidly detecting ash content and heat value of coal | |
| US2005036A (en) | Method and apparatus for gas analyses | |
| CN107449847A (en) | The chromatography of Period of Coal Seam Spontaneous Combustion symbolic gas and index preferably determine device | |
| CN105891033A (en) | Durometer for measuring variable-temperature hardness of metal material | |
| CN106018708A (en) | Method for determining performance of high-temperature sulfur corrosion prevention coating of water-cooling wall of boiler | |
| CN107545810B (en) | A kind of experimental provision for studying different liquid level depth pond fire combustion characteristics | |
| Sebastian et al. | Coke Reactivity Determination by a Modified Ignition Point Method | |
| CN207198105U (en) | The chromatography of Period of Coal Seam Spontaneous Combustion symbolic gas and index preferably determine device | |
| CN209707461U (en) | Horizontal dual chamber coke activation energy analyzer | |
| RU2532601C1 (en) | Method for determining fire-resistant efficiency of protective compounds and coatings for timber and materials on its basis, and unit for its implementation | |
| CN209342646U (en) | A kind of oil-bath type coal spontaneous combustion oxidation experiment system of real simulation subsurface environment | |
| CN102809504B (en) | Pressure-controllable multifunctional soil sample heating test system | |
| CN105651407A (en) | Metallurgical coke initial reaction temperature measurement method and device | |
| RU174688U1 (en) | Installation for determining the fire hazard of condensed materials during their thermal decomposition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |