CN103983486A - Micro-coking sample preparation device and method for determining coke microstructure - Google Patents
Micro-coking sample preparation device and method for determining coke microstructure Download PDFInfo
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- CN103983486A CN103983486A CN201410116279.XA CN201410116279A CN103983486A CN 103983486 A CN103983486 A CN 103983486A CN 201410116279 A CN201410116279 A CN 201410116279A CN 103983486 A CN103983486 A CN 103983486A
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- coke
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- coking
- preparation device
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- 239000000571 coke Substances 0.000 title claims abstract description 62
- 238000002360 preparation method Methods 0.000 title claims abstract description 29
- 238000004939 coking Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000000465 moulding Methods 0.000 claims abstract description 8
- 210000004907 gland Anatomy 0.000 claims abstract description 4
- 238000005498 polishing Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 238000010791 quenching Methods 0.000 claims description 5
- 230000000171 quenching effect Effects 0.000 claims description 5
- 239000000470 constituent Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000002817 coal dust Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 230000006378 damage Effects 0.000 abstract description 3
- 238000005056 compaction Methods 0.000 abstract 2
- 239000006185 dispersion Substances 0.000 abstract 1
- 238000010304 firing Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a micro coking sample preparation device and a method for determining a coke microstructure. The supporting component is a door-shaped structure formed by fixing a bracket base, a bracket and a cross beam, and a circular base for placing the cylinder is arranged in the middle of the base; the compaction component consists of a compaction weight block, a tamping weight hammer, a baffle plate, a hammer head and a firing pin; the barrel component consists of a barrel wall, a base and a gland, and the center of the gland is provided with a volatile dispersion hole. The method can be used for preparing a micro coke sample with a proper size, the micro coke sample is placed in a rubber mold for molding, the micro coke sample can be directly observed under a microscope after being polished, the using amount of the pulverized coal is small, the sample preparation time is short, the damage to the coke tissue in the crushing process of the traditional method is avoided, and the continuous determination of the micro structure of the coke under the microscope is realized, so that the method is convenient and accurate.
Description
Technical field
The present invention relates to a kind of micro-coking sample preparation device and method of measuring for coke microstructure, belong to coke microstructure property research field in coking subject.
Background technology
Coke plays reduction in blast furnace ironmaking, the effect of thermal source and support skeleton, and along with blast furnace develops to large volume, the requirement of STRENGTH ON COKE cold strength, hot performance is more and more higher.The microstructure of coke is one of the cold strength of coke and important factor in order of hot performance.The method for making sample that tradition is measured for coke microstructure is to produce large lump coke, then pulverize, the coke powder particle of screening 0.2mm-1.0mm, utilizes the sample of making 2.5cm × 2.5cm × 2.0cm size after resin solidification moulding, observation under the microscope after sanding and polishing.Each sample preparation needs a large amount of coal dusts, and after coking, need coke blacking to be broken into particle, in crushing process, STRENGTH ON COKE tissue causes certain destruction, and because coke powder particle is dispersed in resin, in mensuration process, need constantly between coke granule and resin cured matter, to jump and detect, the accuracy very loaded down with trivial details, impact is measured.
Summary of the invention
The object of the invention is to propose a kind of micro-coking sample preparation device and method of measuring for coke microstructure, large to solve prior art coal consumption, coking time is long, and crushing process destroys coke institutional framework, mensuration process is discontinuous, affects the defect of measurement result accuracy.The present invention is few with coal, and coking time is short, saves coke crushing process, can observe continuous coke institutional framework under microscope, realizes continuous detecting, and it is convenient, accurate to measure.
For achieving the above object, the technical solution used in the present invention is:
Supporting member is fixed into door type structure by base, support and crossbeam; Compacting member, by compacting pouring weight, hits tight weight, catch, and tup and striker composition, described compacting pouring weight is fixed on base by a steel bar and two block plates; Catch is laterally fixed on support by both sides nut, is longitudinally fixed on crossbeam by slide bar; Hit tight weight and be through on the slide bar on catch, by a nut adjusting position; Tup is fixed on catch lower end, and center arranges a striker; When sample preparation, cylindrical shell is positioned on the cup dolly at base center, after sample preparation, lid is inserted to cylindrical shell.
Described compacting member center arranges a U-shaped groove, and compacting member can overturn forward, and when compacting sample, the U-shaped groove of compacting member sees through the slide bar being fixed on crossbeam, and level is pressed on catch.
Described hit tight the cylindrical tube that weight is hollow, be fixed on the slide bar at center by a nut, this weight can slide up and down, and can be fixed on differing heights position by nut.
Described tup is fixed on catch, and tup external diameter is slightly less than the internal diameter of placing coal dust cylindrical shell, and difference is 0.5mm between the two.
Described striker is fixed on tup by screw thread rotation, and striker is abnormally-structured, and the radius of striker is 5mm, pricks out a cylindrical hole for Mei center, discharges fugitive constituent.
Described cylindrical shell is made up of base and barrel, is threaded connection, and the degree of depth of cylindrical shell is greater than the total length of tup and striker, and difference is 10mm, and tup top is 20mm apart from the distance of cylindrical shell bottom.
Described lid top and bottom are all cylindrical shape, the cylindrical length in lower end, and diameter is identical with tup, and the center of lid arranges a cylindrical cavity, and its internal diameter is identical with the diameter of striker.
As the method that the micro-coking sample preparation device measured for coke microstructure as described in aforementioned is used, it is characterized in that, comprise the following steps:
1) granularity is less than to 3mm, air-dried moisture is less than 10% coal dust and fills up cylindrical shell, strike off, be placed on the cup dolly at sample preparation device base center, put down tup, to hit tight weight and adjust to upper end, set level compacting pouring weight, be pressed on catch, unclamp the nut that hits tight weight, to hit tight pouring weight and rise to peak and pound compacting pouring weight under backward, until striker and tup go deep in cylindrical shell completely;
2) lid is inserted to cylindrical shell, put into the muffle furnace that prior temperature rises to 850 DEG C-950 DEG C and heat 15-20min coking, after coking, sample is taken out from muffle furnace, water puts out mode quenching;
3) coke button after quenching is taken out, be placed in 50 DEG C of drying boxes, dry 1h;
4) coke after drying is used to the sawed-off top of saw blade, the height of bottom coke button is that 10-15mm is benefit;
5) coke button is put into rubber mold, resin by injection, dry;
6) after drying and moulding, utilize polished machine polishing, expose behind circular coke interface, continue polishing 1mm thickness left and right, remove coke oxide layer, polishing, sample preparation is complete, for microscopic.
Compared with prior art, coal consumption of the present invention is few, greatly shorten the sample preparation time, simplify sample preparation step, and avoid the destruction of comminuting coke STRENGTH ON COKE organizational interface, can observe continuous coke institutional framework, need to be between resin and coke granule when having eliminated conventional art and detecting the beating heart disadvantage of switching that jumps, significantly improve the accuracy of measurement.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in below describing is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawing illustrated embodiments other embodiment and accompanying drawing thereof.
Fig. 1 is the main component schematic diagram that a kind of coke microstructure of the present invention is measured sample preparation device, comprises support element, compacting member;
Fig. 2 a is the barrel components schematic diagram of powder sample of coalingging, and comprises barrel and bottom member;
Fig. 2 b is the cover component schematic diagram of cylindrical shell, comprises and inserts position, end socket position and volatile relese hole;
Fig. 3 a is that the coke microstructure that conventional method for making sample is made detects sample schematic diagram;
Fig. 3 b is that the coke microstructure that sample preparation device of the present invention is made detects sample schematic diagram.
Embodiment
Below with reference to accompanying drawing, the technical scheme of various embodiments of the present invention is carried out to clear, complete description, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiment.Based on the embodiment in the present invention, all other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, belong to the scope that the present invention protects.
Referring to Fig. 1, Fig. 2 a, Fig. 2 b, the present invention discloses a kind of micro-coking sample preparation device and method of measuring for coke microstructure, comprises supporting member, compacting member, and barrel components three parts composition.Supporting member is by bracket base (1), support (9), and the fixing door type structure that forms of crossbeam (8), has one for placing the round base (2) of cylindrical shell in the middle part of base (1); Compacting member, by compacting pouring weight (6), hits tight weight (11), catch (5), tup (13) and striker (14) composition; Barrel components is by barrel (17), and base (19) and gland (21) form, and gland center arranges fugitive constituent and diffuses hole (20).The present invention can be made into the miniature coke sample of suitable size, put into rubber mold moulding, after sanding and polishing, can directly observe under the microscope, pulverized coal consumption is few, the sample preparation time is short, avoid classic method crushing process STRENGTH ON COKE disorganization, and realized under the microscope METHOD FOR CONTINUOUS DETERMINATION coke heterogeneous microstructure, convenient, accurate.
Below in conjunction with accompanying drawing, technology contents of the present invention is described below in greater detail.
1. granularity is less than to 3mm, air-dried moisture is less than in 10% the cylindrical shell of pulverized coal particle load map 2a to be measured, fills cylindrical shell, strikes off cylindrical shell upper surface;
2. cylindrical shell is put on the cup dolly at Fig. 1 device center, the nut of catch both sides of outwarding winding, is pressed into tup and striker in cylindrical shell;
3. by hitting tight weight and be fixed on the top of central slide bar, compacting pouring weight is pulled down, concora crush is on catch;
4. the nut that hits tight weight is unclamped, slide into the top hitting tight weight, unclamp, allow hit tight weight and naturally fall, pound on compacting pouring weight, repeatedly repeat this action, until tup and striker are pressed in cylindrical shell completely, stop;
5. from base, take out cylindrical shell, lid is inserted in cylindrical shell, keep the fugitive constituent diffusion at lid center empty without stopping up;
6. cylindrical shell is put into together with lid and be heated in advance the muffle furnace of 850 DEG C-950 DEG C and heat 15-20min coking, after coking, sample is taken out from muffle furnace, water puts out mode quenching;
7. extract lid, and the base of cylindrical shell is outwarded winding, take out the coke in cylindrical shell, put into 50 DEG C of drying boxes and dry 1h;
8. the coke after drying is used to the sawed-off top of saw blade, the height that makes bottom coke is that 10-15mm is benefit;
9 by coke button put into rubber mold, pour resin into, spontaneous curing moulding;
10. take out the sample of curing molding, first utilize polished machine corase grind, expose behind the interface of circular coke, continue polishing 1mm left and right, remove the oxide layer that coke surface contacts with air, carry out again afterwards fine grinding, polishing, when sample surfaces smooth, after no marking sample preparation complete, for microscopic;
11. the coke microstructure that Fig. 3 b is the present invention to be made detects sample schematic diagram, the coke microstructure made from the conventional method for making sample shown in Fig. 3 a detects sample schematic diagram and compares, and the coke continuous tissue in Fig. 3 b is clear, easy to detect, accurately.
Various embodiment provided by the invention combination mutually in any way as required, the technical scheme obtaining by this combination, also within the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if to these amendments of the present invention with within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention also comprises these changes and modification interior.
Claims (6)
1. a micro-coking sample preparation device of measuring for coke microstructure, is characterized in that:
Supporting member is fixed into door type structure by base, support and crossbeam; Compacting member, by compacting pouring weight, hits tight weight, catch, and tup and striker composition, described compacting pouring weight is fixed on base by a steel bar and two block plates; Catch is fixed on support by a steel bar and both sides nut; Hit tight weight and be through on the slide bar being fixed between crossbeam and catch, by a nut adjusting position; Tup is fixed on catch lower end, and center arranges a striker; When sample preparation, cylindrical shell is placed on the matrix base at base center, after sample preparation, lid is inserted to cylindrical shell.
2. a kind of micro-coking sample preparation device of measuring for coke microstructure as claimed in claim 1, it is characterized in that: the center of described compacting member arranges a U-shaped groove, compacting member can overturn forward, when compacting sample, compacting member sees through the slide bar being fixed on crossbeam, and concora crush is on catch.
3. a kind of micro-coking sample preparation device of measuring for coke microstructure as claimed in claim 1, is characterized in that: described in to hit tight weight be the cylindrical tube of hollow of can slide up and down.
4. a kind of micro-coking sample preparation device of measuring for coke microstructure as claimed in claim 1, is characterized in that: described striker is fixed on tup, and striker is cross type structure.
5. a kind of micro-coking sample preparation device of measuring for coke microstructure as claimed in claim 1, it is characterized in that: the top and bottom of described lid are all cylindrical structure, the center of gland arranges a cylindrical cavity, and its internal diameter is identical with the diameter of striker, for diffusing fugitive constituent gas.
6. the method that a kind of micro-coking sample preparation device measured for coke microstructure as described in claim 1-5 any one is used, is characterized in that, comprises the following steps:
1) granularity is less than to 3mm, air-dried moisture is less than 10% coal dust and fills up cylindrical shell, strike off, be placed on the cup dolly at sample preparation device base center, put down tup, will hit tight weight and adjust to upper end, again by compacting pouring weight concora crush on catch, unclamp the nut that hits tight weight, will hit tight pouring weight and rise to peak and pound compacting pouring weight under backward, until striker and tup go deep in cylindrical shell completely;
2) lid is inserted in cylindrical shell, then cylindrical shell is put into the muffle furnace that prior temperature rises to 850 DEG C-950 DEG C and heat 15-20min coking, after coking, sample is taken out from muffle furnace, water puts out mode quenching;
3) coke button after quenching is taken out, be placed in 50 DEG C of drying boxes, dry 1h;
4) coke after drying is used to the sawed-off top of saw blade, the height of bottom coke button is 10-15mm;
5) coke button is put into rubber mold, resin by injection, curing molding;
6) after curing molding, polish with polished machine, expose behind circular coke interface, continue to polish off 1mm thickness left and right, remove coke oxide layer, polishing, sample preparation is complete, for microscopic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410116279.XA CN103983486B (en) | 2014-03-26 | 2014-03-26 | Micro-coking sample preparation device and method for determining coke microstructure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410116279.XA CN103983486B (en) | 2014-03-26 | 2014-03-26 | Micro-coking sample preparation device and method for determining coke microstructure |
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| CN103983486A true CN103983486A (en) | 2014-08-13 |
| CN103983486B CN103983486B (en) | 2017-03-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107796676A (en) * | 2017-09-27 | 2018-03-13 | 安徽理工大学 | The bituminous coal sub- automatic percussion device of dilatometer difficult to understand |
| CN113804678A (en) * | 2020-06-16 | 2021-12-17 | 上海梅山钢铁股份有限公司 | Detection method for coke reaction depth |
| CN114459887A (en) * | 2022-01-10 | 2022-05-10 | 首钢集团有限公司 | Coke compressive strength measuring tool and device |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60154137A (en) * | 1984-01-23 | 1985-08-13 | Agency Of Ind Science & Technol | Conductive embedding material for surface observation |
| WO2001069233A2 (en) * | 2000-03-13 | 2001-09-20 | Deutsche Montan Technologie Gmbh | Sampling device for gas analyses of raw coke oven gases and other contaminated gases and method for analysis thereof |
| CN201196612Y (en) * | 2008-05-12 | 2009-02-18 | 武汉钢铁(集团)公司 | Coke sample shaping cutting machine |
| CN101430315A (en) * | 2008-12-05 | 2009-05-13 | 武汉钢铁(集团)公司 | Test method used for detecting coking coal |
| CN201417232Y (en) * | 2009-06-16 | 2010-03-03 | 武汉钢铁(集团)公司 | Sample preparation template of coke pellets |
| CN201503366U (en) * | 2009-10-14 | 2010-06-09 | 中国地质大学（武汉） | Hollow cylinder specimen sampling instrument |
| CN102033005A (en) * | 2009-09-30 | 2011-04-27 | 上海宝钢化工有限公司 | Preparation method of asphalt sample for microscopic analysis of reflected light |
| CN202158983U (en) * | 2011-07-22 | 2012-03-07 | 上虞市宏兴机械仪器制造有限公司 | Reaction tube lifting device for detecting reactivity of coke |
| CN202661317U (en) * | 2012-07-12 | 2013-01-09 | 上虞市宏兴机械仪器制造有限公司 | Coke particle sample preparation machine |
| CN103487305A (en) * | 2013-10-10 | 2014-01-01 | 辽宁同辉科技发展有限公司 | Coke reactivity and post-reaction intensity detection sample preparation apparatus and sample preparation method |
| CN203929465U (en) * | 2014-03-26 | 2014-11-05 | 江苏省沙钢钢铁研究院有限公司 | Micro-coking sample preparation device for coke microstructure determination |
-
2014
- 2014-03-26 CN CN201410116279.XA patent/CN103983486B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60154137A (en) * | 1984-01-23 | 1985-08-13 | Agency Of Ind Science & Technol | Conductive embedding material for surface observation |
| WO2001069233A2 (en) * | 2000-03-13 | 2001-09-20 | Deutsche Montan Technologie Gmbh | Sampling device for gas analyses of raw coke oven gases and other contaminated gases and method for analysis thereof |
| CN201196612Y (en) * | 2008-05-12 | 2009-02-18 | 武汉钢铁(集团)公司 | Coke sample shaping cutting machine |
| CN101430315A (en) * | 2008-12-05 | 2009-05-13 | 武汉钢铁(集团)公司 | Test method used for detecting coking coal |
| CN201417232Y (en) * | 2009-06-16 | 2010-03-03 | 武汉钢铁(集团)公司 | Sample preparation template of coke pellets |
| CN102033005A (en) * | 2009-09-30 | 2011-04-27 | 上海宝钢化工有限公司 | Preparation method of asphalt sample for microscopic analysis of reflected light |
| CN201503366U (en) * | 2009-10-14 | 2010-06-09 | 中国地质大学（武汉） | Hollow cylinder specimen sampling instrument |
| CN202158983U (en) * | 2011-07-22 | 2012-03-07 | 上虞市宏兴机械仪器制造有限公司 | Reaction tube lifting device for detecting reactivity of coke |
| CN202661317U (en) * | 2012-07-12 | 2013-01-09 | 上虞市宏兴机械仪器制造有限公司 | Coke particle sample preparation machine |
| CN103487305A (en) * | 2013-10-10 | 2014-01-01 | 辽宁同辉科技发展有限公司 | Coke reactivity and post-reaction intensity detection sample preparation apparatus and sample preparation method |
| CN203929465U (en) * | 2014-03-26 | 2014-11-05 | 江苏省沙钢钢铁研究院有限公司 | Micro-coking sample preparation device for coke microstructure determination |
Non-Patent Citations (1)
| Title |
|---|
| 杨俊和等: "矿物质对焦炭显微结构作用研究", 《上海应用技术学院学报》, vol. 1, no. 1, 30 June 2001 (2001-06-30) * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107796676A (en) * | 2017-09-27 | 2018-03-13 | 安徽理工大学 | The bituminous coal sub- automatic percussion device of dilatometer difficult to understand |
| CN107796676B (en) * | 2017-09-27 | 2024-04-16 | 安徽理工大学 | Automatic striking device of bituminous coal Oinferior dilatometer |
| CN113804678A (en) * | 2020-06-16 | 2021-12-17 | 上海梅山钢铁股份有限公司 | Detection method for coke reaction depth |
| CN113804678B (en) * | 2020-06-16 | 2024-05-10 | 上海梅山钢铁股份有限公司 | Method for detecting coke reaction depth |
| CN114459887A (en) * | 2022-01-10 | 2022-05-10 | 首钢集团有限公司 | Coke compressive strength measuring tool and device |
| CN114459887B (en) * | 2022-01-10 | 2023-11-10 | 首钢集团有限公司 | Coke compressive strength measures frock and device |
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| CN103983486B (en) | 2017-03-08 |
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