CN106338591A - Apparatus for detecting reactivity of alkali metal on coke and intensity influence after reaction - Google Patents
Apparatus for detecting reactivity of alkali metal on coke and intensity influence after reaction Download PDFInfo
- Publication number
- CN106338591A CN106338591A CN201610717637.1A CN201610717637A CN106338591A CN 106338591 A CN106338591 A CN 106338591A CN 201610717637 A CN201610717637 A CN 201610717637A CN 106338591 A CN106338591 A CN 106338591A
- Authority
- CN
- China
- Prior art keywords
- coke
- alkali metal
- crucible
- graphite crucible
- reactivity
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/20—Metals
- G01N33/205—Metals in liquid state, e.g. molten metals
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention relates to an apparatus for detecting reactivity of alkali metal on coke and intensity influence after reaction, which belongs to the technical field of ironmaking experiment equipment. The apparatus is used for detecting influence of reactivity of blast furnace softening dropping band alkali metal vapour on coke and intensity influence after a reaction, a technical scheme is characterized in that a graphite crucible is placed at center of a furnace body, a silicon-molybdenum rod is arranged outside a corundum pipe at outer part of the graphite crucible, the silicon-molybdenum rod is connected with a temperature controlling device, a furnace temperature display instrument and a hearth temperature display instrument are arranged on the furnace body, and are connected with the temperature controlling device. The graphite crucible is divided into an upper layer and a lower layer, the upper layer is filled with a charging material, the lower layer is filled with solid potassium bicarbonate pellets, so that potassium steam can be continuously provided during an experiment process. The apparatus simulates an influence process of the reactivity of blast furnace softening dropping band alkali metal vapour on the coke and the intensity after the reaction, provides accurate technological parameter for production, and plays vital effect for guidance production.
Description
Technical field
The present invention relates to steel industry ironmaking use for laboratory is in detection alkali metal STRENGTH ON COKE reactivity and post reaction strength shadow
The experimental provision ringing, belongs to ironmaking technical field of experiment equipment.
Background technology
Measuring coke reactivity and the method for post reaction strength is according to national standard " coke reactivity and post reaction strength
Test method " (gb/t4000-2008).This detection method existing problems, that is, do not account for alkali metal (potassium, sodium) STRENGTH ON COKE strong
The impact of degree.Blast furnace raw material all contains alkali metal, and has the trend of rising.The impact of alkali metal STRENGTH ON COKE cold strength is little,
But alkali metal can make the reactivity (cri) of coke substantially increase, and the post reaction strength of coke substantially reduces.Alkali-metal absorption is first
First from the beginning of the pore of coke, the substrate then gradually to coke within spreads, with coke in alkali vapor exposure time
Extend, alkali-metal adsorbance gradually increases.Alkali metal to the diffusion of coke base portion can corrode inside graphite crystal, breaks
It is broken original layer structure, produce intercalation compound.When generating intercalation compound, can the larger volumetric expansion of producing ratio.
For example, generate kc8When, volumetric expansion 61%, generate kc60When, volumetric expansion 12%.The result of volumetric expansion is that coke generation is split
Stricture of vagina and then make coke burst apart.In addition alkali metal is coke melting loss reaction (c+co2==2co) catalyst, different coke exists
In the presence of alkali metal, the speed that the reaction of coke melting loss increases is different, and this species diversity is exactly the gap of alkali resistance of coke index.
All the time, the impact of research alkali metal STRENGTH ON COKE uses infusion method, will be immersed in alkali carbonate by coke
Solution, is detected according to gb/t 4000-2008 standard after drying, this method can not simulate actual blast furnace melting with soft source
Source continuous alkali vapor STRENGTH ON COKE reactivity and the impact of post reaction strength.Therefore testing result is inaccurate.
Content of the invention
The technical problem to be solved is to provide lasting, stable alkali metal vapour test dress into reacting furnace
Put, the impact of simulation soft heat region alkali metal vapour STRENGTH ON COKE reactivity and post reaction strength.
Concrete technical scheme is as follows:
A kind of detection alkali metal STRENGTH ON COKE reactivity and the device of post reaction strength impact, its composition includes temperature control
Instrument, connect thing disk, high temperature molten drop stove, graphite crucible, displacement meter, pressure counterweight, sensor device, connect the bottom that thing disk is located at body of heater
Portion, temperature control instrument is located at the right side of body of heater, and the top that displacement meter is located at body of heater is connected with sensor by counterweight, and furnace interior has one
Root runs through upper and lower alundum tube, and graphite crucible is placed in the inside of alundum tube, excellent equipped with molybdenum disilicide around the surrounding of alundum tube, with
Transformator is connected.
Above-mentioned detection alkali metal STRENGTH ON COKE reactivity and the device of post reaction strength impact, described body of heater equipped with Si-Mo rod,
Fire box temperature display instrument, furnace body temperature display instrument, displacement display instrument, pressure reduction display instrument, Si-Mo rod and molten drop stove temperature regulating device phase
Even, fire box temperature display instrument, furnace body temperature display instrument, displacement display instrument, pressure reduction display instrument are connected with controlling temperature device, and temperature control fills
Put and be connected with computer.
Above-mentioned detection alkali metal STRENGTH ON COKE reactivity and the device of post reaction strength impact, described furnace interior crucible internal diameter
35mm, external diameter 50mm, high 240mm, material is graphite, furnace interior corundum bore 55mm, external diameter 65mm, and material is corundum.
Above-mentioned detection alkali metal STRENGTH ON COKE reactivity and the device of post reaction strength impact, are provided with reducing gas and fill
Put, the gas composition 30%co, 70%n of generation2, with 0.9m3The flow of/l h is passed through detection means.Vapour of an alkali metal generating capacity
Control by different blast furnace actual alkali metal amounts.
The medicine have the advantages that
The present invention has broken traditional " caustic dip " method and has detected alkali metal STRENGTH ON COKE reactivity and the examination of post reaction strength impact
Proved recipe method, simulates the impact of continually alkali vapor volatilization STRENGTH ON COKE reactivity and post reaction strength in actual blast furnace melting with soft,
This guarantees in whole course of reaction has alkali-metal presence, and alkali metal constantly volatilizees in a gaseous form through coke
Layer, ensure that alkali metal is evenly distributed on coke surface, preferably research alkali metal STRENGTH ON COKE reactivity and post reaction strength
Impact.
The present invention is different from national standard " coke reactivity and post reaction strength test method ", is not single being passed through
co2The performance of gas STRENGTH ON COKE is detected, but simulates the reaction of blast furnace melting with soft coke in actual production, considers
Various physical condition STRENGTH ON COKE reactivity and impact, the coke reactivity so detecting and the post reaction strength of post reaction strength
More closing to reality produces, more with practical value.
Brief description
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is interior crucible structural representation of the present invention.
In Fig. 1, labelling is as follows: 1-- temperature control instrument；2-- connects thing disk；3-- high-temperature heater；4-- graphite crucible；5-- displacement
Meter；6-- pressure counterweight；7-- sensor；8-- protective gas；9-- reducing gas.
Specific embodiment
The present invention connects thing disk, 3 high-temperature heaters, 4-- graphite crucible, 5-- displacement meter, 6-- pressure by 1-- temperature control instrument, 2--
Counterweight, 7-- sensor, 8-- protective gas generating meanss, 9-- reducing gas generating meanss composition.
Show in Fig. 1, connect the bottom that thing disk is located at body of heater 3, pressure counterweight 6 is located at the top of body of heater, and displacement meter 5 passes through pressure
Power counterweight is connected with body of heater 3, and graphite crucible 4 is located inside body of heater 3, and temperature control instrument 1 is connected with body of heater 3, protective gas 8 and also Primordial Qi
Body 9 is all passed through from body of heater 3 bottom.
Show in Fig. 1, body of heater 3 is made up of Si-Mo rod, heat-preservation cotton, alundum tube, and alundum tube, at the center of body of heater, runs through whole
Body of heater upper and lower, alundum tube outer wrapping heat-preservation cotton, is Si-Mo rod outside heat-preservation cotton, and Si-Mo rod is connected with transformator, to whole
Body of heater is heated.
Show in Fig. 1, installed fire box temperature display instrument, furnace body temperature display instrument, displacement display instrument, pressure in body of heater 3
Difference display instrument, they are connected with computer, by it, these data are carried out with record preservation, are that high temperature molten drop furnace temperature control device carries
For relevant parameter, make high temperature molten drop furnace temperature control device that Si-Mo rod is controlled.
Show in Fig. 2, graphite crucible is made up of crucible 1 and crucible 2 two parts, hold in crucible 1 used by molten drop test
Furnace charge (Ore and coke), holds solid carbonic acid potassium pelletizing in crucible 2, constantly decompose so that experimentation in high-temperature heating process
In potassium vapor is endlessly provided.
One embodiment of the present of invention is as follows:
Crucible 1 internal diameter is 35mm, external diameter 50mm, high 240mm, and material is graphite, and a diameter of 8mm aperture is made in bottom, interior
Put 170g furnace charge (sintering deposit adds coke), crucible 2 internal diameter is 35mm, external diameter 50mm, high 240mm material is graphite, and bottom is made
A diameter of 8mm aperture, built-in 50g solid carbonic acid potassium pelletizing.
The a height of 700-800mm of Si-Mo rod, is controlled by molten drop furnace temperature control device, continuous to whole body of heater in experimentation
Heated, until Molten drop test terminates.
Reducing gas generating meanss are with 0.9m3The gas flow of/l h endlessly provides also Primordial Qi for test raw material
Body, until off-test.
The processing step of the use process of the present invention is as follows:
(1) preparation of samples (granularity): coke: 10～15mm.Furnace charge: 6.3～10mm.Dress crucible 1 (consumption and order): burnt
Charcoal 20mm+ furnace charge 50mm+ coke 20mm, fills crucible 2: solid carbonic acid potassium pelletizing 50g；
(2) first open Gas-making Furnace to heat up, open cooling water；
(3) 500 DEG C of reacting furnace leads to nitrogen before and is protected, and 500 DEG C close nitrogen afterwards, and logical reducing gas flow is
0.9m3/l·h.Adjust electric current automatic catch, carried out with the heating rate of 10 DEG C/min before according to 1300 DEG C of the curve that computer sets
Heat up, heated up with the heating rate of 5 DEG C/min after 1300 DEG C；
(4) after seeing drip phenomenon, point stops, and experiment terminates, logical protective gas, and Gas-making Furnace is closed in cooling；
(5) close Gas-making Furnace after greenhouse cooling is to less than 400 DEG C, close cooling water, take out crucible, crucible is cooled to room
After temperature, coke is taken out and weighed, chemical examination.
Claims (2)
1. the device of a kind of detection alkali metal STRENGTH ON COKE reactivity and post reaction strength, its composition includes (1) temperature control instrument, (3)
High temperature molten drop stove, (4) graphite crucible, (5) displacement meter, (6) pressure counterweight, (8) protective gas generating meanss, (9) reducing gas
Generating meanss form, and temperature control instrument (1) is connected with body of heater (3), and graphite crucible (4) is located at the inside of body of heater (3), and displacement meter (5) leads to
Excess pressure counterweight (6) is connected with sensor (7), and protective gas generating meanss (8) and reducing gas generating meanss (9) are from body of heater
(3) bottom is passed through it is characterised in that body of heater (3) center placing graphite crucible (4), and graphite crucible (4) is by displacement meter (5)
It is connected with pressure counterweight.
2. according to claim 1 detection alkali metal STRENGTH ON COKE reactivity and post reaction strength device it is characterised in that
Graphite crucible is made up of crucible 1 and crucible 2 two parts, holds molten drop test furnace charge (Ore and coke) used, earthenware in crucible 1
Holding solid carbonic acid potassium pelletizing in crucible 2, constantly decomposing endlessly to provide potassium in experimentation in high-temperature heating process
Steam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610717637.1A CN106338591A (en) | 2016-08-02 | 2016-08-02 | Apparatus for detecting reactivity of alkali metal on coke and intensity influence after reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610717637.1A CN106338591A (en) | 2016-08-02 | 2016-08-02 | Apparatus for detecting reactivity of alkali metal on coke and intensity influence after reaction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106338591A true CN106338591A (en) | 2017-01-18 |
Family
ID=57825211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610717637.1A Pending CN106338591A (en) | 2016-08-02 | 2016-08-02 | Apparatus for detecting reactivity of alkali metal on coke and intensity influence after reaction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106338591A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107621518A (en) * | 2017-08-31 | 2018-01-23 | 包头钢铁（集团）有限责任公司 | A kind of blast furnace slag alkaline discharging capacity detection and evaluation method |
| CN108195746A (en) * | 2017-12-20 | 2018-06-22 | 北京科技大学 | A kind of experimental rig and method for evaluating refractory material alkali resistant metal attack performance |
| CN108918330A (en) * | 2018-05-15 | 2018-11-30 | 内蒙古科技大学 | For studying the device and method that alkali metal STRENGTH ON COKE reactivity influences under vapor and carbon dioxide conditions |
| CN109298016A (en) * | 2018-08-24 | 2019-02-01 | 上海大学 | A kind of analog blast furnace cupola well coagulates the experimental provision of iron layer |
| CN110672661A (en) * | 2019-08-27 | 2020-01-10 | 武汉科技大学 | Multifunctional blast furnace harmful element adsorption experiment method and device thereof |
-
2016
- 2016-08-02 CN CN201610717637.1A patent/CN106338591A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107621518A (en) * | 2017-08-31 | 2018-01-23 | 包头钢铁（集团）有限责任公司 | A kind of blast furnace slag alkaline discharging capacity detection and evaluation method |
| CN108195746A (en) * | 2017-12-20 | 2018-06-22 | 北京科技大学 | A kind of experimental rig and method for evaluating refractory material alkali resistant metal attack performance |
| CN108918330A (en) * | 2018-05-15 | 2018-11-30 | 内蒙古科技大学 | For studying the device and method that alkali metal STRENGTH ON COKE reactivity influences under vapor and carbon dioxide conditions |
| CN108918330B (en) * | 2018-05-15 | 2021-02-09 | 内蒙古科技大学 | Device and method for researching influence of alkali metal on coke reactivity under conditions of water vapor and carbon dioxide |
| CN109298016A (en) * | 2018-08-24 | 2019-02-01 | 上海大学 | A kind of analog blast furnace cupola well coagulates the experimental provision of iron layer |
| CN109298016B (en) * | 2018-08-24 | 2021-04-30 | 上海大学 | Experimental device for simulating iron layer of blast furnace hearth |
| CN110672661A (en) * | 2019-08-27 | 2020-01-10 | 武汉科技大学 | Multifunctional blast furnace harmful element adsorption experiment method and device thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106338591A (en) | Apparatus for detecting reactivity of alkali metal on coke and intensity influence after reaction | |
| CN108918330B (en) | Device and method for researching influence of alkali metal on coke reactivity under conditions of water vapor and carbon dioxide | |
| Ringdalen et al. | Reaction mechanisms in carbothermic production of silicon, study of selected reactions | |
| Mousa et al. | Effect of nut coke-sinter mixture on the blast furnace performance | |
| JP4954949B2 (en) | Coke reactivity evaluation method | |
| CN102213548B (en) | Molten drop furnace for measuring molten drop point of iron ore | |
| CN102183477B (en) | Method for simulation test of influence of alkali metal on coke degradation | |
| CN202066813U (en) | Iron ore high-temperature molten drop determination device | |
| CN103940697A (en) | Test method for blast furnace coke reactivity | |
| Sun et al. | Thermogravimetric study of coal-based reduction of oolitic iron ore: Kinetics and mechanisms | |
| CN103645114A (en) | Iron-containing raw material gas-based reduction and slagging process experiment method and iron-containing raw material gas-based reduction and slagging device | |
| US20210010753A1 (en) | Device And Method For Measuring Softening And Melting Performances Of Iron Ore In Blast Furnace Under Reducing Condition | |
| CN102628828B (en) | Method for determining iron oxide activity in alkali-containing blast furnace slag | |
| CN108593700A (en) | It is a kind of simulation coke blast furnace melting with soft deterioration process test method and simulator | |
| CN111638316A (en) | Device and method for simulating coke reaction at high-temperature section of blast furnace | |
| CN108106961A (en) | A kind of detection method of blast furnace ironmaking coke reactivity | |
| CN102692356A (en) | Metallurgical properties detection set for reduction, pulverization and expansion of iron ore | |
| CN107858470B (en) | Simulation detection method and device for influence of material distribution system on blast furnace reflow zone | |
| CN104316429B (en) | The method of test alkali metal and zinc fume STRENGTH ON COKE destruction and performance impact | |
| CN105842065B (en) | The evaluation method of smelter coke post reaction strength | |
| CN202599779U (en) | Iron ore reduction, pulverization and expansion metallurgy properties test device | |
| CN102279203B (en) | Method for evaluating comprehensive alkali-removing and desulfuration capacity of blast furnace slag | |
| CN110672661B (en) | Multifunctional blast furnace harmful element adsorption experiment method and device thereof | |
| CN110045082B (en) | Method for measuring and evaluating high-temperature performance of lump coal in smelting reduction iron making | |
| CN204314265U (en) | Reduction of iron ore system safety testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170118 |