CN105400139A - Method for preparing coal rock pulverized coal polishing sheet - Google Patents
Method for preparing coal rock pulverized coal polishing sheet Download PDFInfo
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- CN105400139A CN105400139A CN201510853202.5A CN201510853202A CN105400139A CN 105400139 A CN105400139 A CN 105400139A CN 201510853202 A CN201510853202 A CN 201510853202A CN 105400139 A CN105400139 A CN 105400139A
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- coal
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Abstract
The invention belongs to the technical field of coal rock sample preparation and particularly relates to a method for preparing a coal rock pulverized coal polishing sheet. The problems that ethylenediamine and epoxy resin are not cured well during sample preparation, are not evenly mixed or the failure of glue preparation caused by ethylenediamine volatilization resulting from too long mixing time are solved. The method comprises the steps of adopting epoxy resin to perform water-bath heating to 100 DEG C until the epoxy resin is completely molten; according to the volume ratio of ethylenediamine and the epoxy resin which is 1:8-1:11, adding ethylenediamine, and performing uniform mixing to prepare cold glue; weighing 10 g of coal sample and placing the coal sample in a die groove, adding 7 g of well mixed cold glue in each die groove, and performing stirring to form coal briquettes; placing the coal briquettes in a constant temperature oven at 49-55 DEG C to undergo still standing for about 2 h, performing consolidation to form coal briquettes, taking the coal briquettes out, and performing numbering. The solidification effect is good, and the coal briquettes are mixed evenly.
Description
Technical field
The present invention is coal petrography sample making technology field, is particularly a kind of preparation method of coal petrography fine coal mating plate.
Background technology
Fine coal mating plate: also known as coal seed lac knot mating plate, polished grain mount.Under reflected light coal is studied and special a kind of coal grain mating plate.Advantage is that the few and representativeness of coal consumption is comparatively strong, grinds conveniently.At microscope viewed in reflected light fine coal mating plate, according to features such as the reflected colour of coal, projection, form and blastema structures, the quantitative statistics of micropetrological unit in coal, contrast can be carried out and measure the reflectivity of coal and degree of oxidation etc.
In the GB of coal petrography sample preparation, refer to the sample preparation of cold glue method, unsaturated polyester resin, solidifying agent and promotor carry out sample preparation.Also have and adopt epoxy resin to utilize quadrol in the preparation of coal petrography sample, also to have application as solidifying agent, but be not reach required effect completely utilizing its sample making course to use.
Find in sample making course, utilize quadrol and epoxy resin sample preparation sometimes to solidify bad, place and still do not solidify for a long time, after sample is taken out from mould, coal cinder still feels like jelly, and can not carry out abrasive disc, polishing, cause sample sample preparation unsuccessful.Meltbility in addition due to epoxy resin is bad, in the process adding quadrol mixing, also can cause the uneven of mixing, or the long quadrol volatilization of mixing time causes the failure preparing glue.
Summary of the invention
Technical problem to be solved by this invention is the preparation method providing a kind of coal petrography fine coal mating plate, solution quadrol and epoxy resin sample preparation are solidified bad, place and still do not solidify for a long time, after sample is taken out from mould, coal cinder still feels like jelly, can not abrasive disc, polishing be carried out, cause sample sample preparation unsuccessful.Meltbility in addition due to epoxy resin is bad, in the process adding quadrol mixing, also can cause the uneven of mixing, or the long quadrol volatilization of mixing time causes the failure preparing glue.
The present invention is achieved in that a kind of preparation method of coal petrography fine coal mating plate, comprises following step:
Step 1, adopts epoxy resin heating in water bath 100 DEG C to melt completely to epoxy resin;
Step 2, is 1:8 ~ 1:11 according to quadrol and epoxy resin volume ratio, adds quadrol, stir and make cold glue;
Step 3, takes 10g coal sample and puts into grinding tool groove, then adds 7g by each for the cold glue mixed up grinding tool groove, and limit bevelling stirs, and makes coal and glue Homogeneous phase mixing, stirs glue retrogradation to when coal grain can be stoped to sink, and stops stirring forming briquet;
Step 4, the thermostat container putting into 49 ~ 55 DEG C leaves standstill about 2h, is consolidated into briquet, takes out, numbering.
Further, step 2 and step 3 process complete in stink cupboard.
Further, in step 3, after stopping stirring, vertically prick unconsolidated briquet with fine steel needle.
Further, preferably, quadrol and epoxy resin volume ratio are 1:10.
Further, preferably, the thermostat container putting into 50 DEG C leaves standstill about 2h.
Compared with prior art, beneficial effect is in the present invention: employing the invention solves and utilizes quadrol and epoxy resin sample preparation to solidify bad problem, and the inventive method is cured, and can carry out abrasive disc and polishing smoothly.And mixing is even.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment 1
Embodiments provide a kind of preparation method of coal petrography fine coal mating plate, comprise following step:
Step 1, adopts epoxy resin heating in water bath 100 DEG C to melt completely (provoke can trickle with glass stick) to epoxy resin; Heating adopts digital display thermostat water bath.
Step 2, is 1:10 according to quadrol and epoxy resin volume ratio, adds quadrol, stir and make cold glue; Here epoxy resin volume is the liquid volume after epoxy resin melts.
Step 3, takes 10g coal sample and puts into grinding tool groove, then adds 7g by each for the cold glue mixed up grinding tool groove, and limit bevelling stirs, and makes coal and glue Homogeneous phase mixing, stirs glue retrogradation to when coal grain can be stoped to sink, and stops stirring forming briquet;
Step 4, the thermostat container putting into 50 DEG C leaves standstill about 2h, is consolidated into briquet, takes out, numbering.Thermostat container adopts closed adjustable universal electric stove (power 1kw).
Step 2 and step 3 process complete in stink cupboard.The mixture of coal and glue should be full of mold slots, and to guarantee to solidify, after grinding and polishing, the surface size of fine coal mating plate is 25mm × 25mm. and in working area, coal grain should account for more than 2/3 of the total area.
In step 3, after stopping stirring, vertically prick unconsolidated briquet with fine steel needle, gas is got rid of completely.
Embodiment 2
Be with the difference of embodiment 1,
Step 2, is 1:8 according to quadrol and epoxy resin volume ratio, adds quadrol, stir and make cold glue;
Step 3, takes 10g coal sample and puts into grinding tool groove, then adds 7g by each for the cold glue mixed up grinding tool groove, and limit bevelling stirs, and makes coal and glue Homogeneous phase mixing, stirs glue retrogradation to when coal grain can be stoped to sink, and stops stirring forming briquet;
Step 4, the thermostat container putting into 49 DEG C leaves standstill about 2h, is consolidated into briquet, takes out, numbering.
Embodiment 3
Be with the difference of embodiment 1,
Step 2, is 1:11 according to quadrol and epoxy resin volume ratio, adds quadrol, stir and make cold glue;
Step 3, takes 10g coal sample and puts into grinding tool groove, then adds 7g by each for the cold glue mixed up grinding tool groove, and limit bevelling stirs, and makes coal and glue Homogeneous phase mixing, stirs glue retrogradation to when coal grain can be stoped to sink, and stops stirring forming briquet;
Step 4, the thermostat container putting into 55 DEG C leaves standstill about 2h, is consolidated into briquet, takes out, numbering.
When sample lacks especially, first sample is layered at the bottom of mold slots, first adds a small amount of cold glue, after to be solidified, then add cold glue, to increase its thickness, be convenient to grinding, polishing.
Sample prepared by above-described embodiment, solidification effect is good, mixes.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a preparation method for coal petrography fine coal mating plate, is characterized in that, comprises following step:
Step 1, adopts epoxy resin heating in water bath 100 DEG C to melt completely to epoxy resin;
Step 2, is 1:8 ~ 1:11 according to quadrol and epoxy resin volume ratio, adds quadrol, stir and make cold glue;
Step 3, takes 10g coal sample and puts into grinding tool groove, then adds 7g by each for the cold glue mixed up grinding tool groove, and limit bevelling stirs, and makes coal and glue Homogeneous phase mixing, stirs glue retrogradation to when coal grain can be stoped to sink, and stops stirring forming briquet;
Step 4, the thermostat container putting into 49 ~ 55 DEG C leaves standstill 2h, is consolidated into briquet, takes out, numbering.
2., according to preparation method according to claim 1, it is characterized in that,
Step 2 and step 3 process complete in stink cupboard.
3. according to preparation method according to claim 1, it is characterized in that, in step 3, after stopping stirring, vertically prick unconsolidated briquet with fine steel needle.
4. according to preparation method according to claim 1, it is characterized in that, preferably, quadrol and epoxy resin volume ratio are 1:10.
5. according to preparation method according to claim 1, it is characterized in that, the thermostat container putting into 50 DEG C leaves standstill 2h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510853202.5A CN105400139A (en) | 2015-11-27 | 2015-11-27 | Method for preparing coal rock pulverized coal polishing sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510853202.5A CN105400139A (en) | 2015-11-27 | 2015-11-27 | Method for preparing coal rock pulverized coal polishing sheet |
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| CN105400139A true CN105400139A (en) | 2016-03-16 |
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| CN201510853202.5A Pending CN105400139A (en) | 2015-11-27 | 2015-11-27 | Method for preparing coal rock pulverized coal polishing sheet |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918230A (en) * | 2018-08-24 | 2018-11-30 | 河北工程大学 | A kind of preparation method of briquet |
| CN109738257A (en) * | 2019-02-28 | 2019-05-10 | 山东科技大学 | A kind of preparation method of fine coal coal petrography mating plate |
| CN114486891A (en) * | 2022-01-19 | 2022-05-13 | 酒泉钢铁(集团)有限责任公司 | Method for rapidly judging proportion of semi-coke doped in anthracite |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169061A (en) * | 2011-01-07 | 2011-08-31 | 河海大学 | Manufacture method for rock samples |
| CN104142261A (en) * | 2014-07-14 | 2014-11-12 | 中国矿业大学 | Method and device for rapidly manufacturing pulverized coal polished section by ultrasonic defoaming |
| CN104973884A (en) * | 2015-06-09 | 2015-10-14 | 云南磷化集团有限公司 | Impregnation treatment method of loose ore |
-
2015
- 2015-11-27 CN CN201510853202.5A patent/CN105400139A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169061A (en) * | 2011-01-07 | 2011-08-31 | 河海大学 | Manufacture method for rock samples |
| CN104142261A (en) * | 2014-07-14 | 2014-11-12 | 中国矿业大学 | Method and device for rapidly manufacturing pulverized coal polished section by ultrasonic defoaming |
| CN104973884A (en) * | 2015-06-09 | 2015-10-14 | 云南磷化集团有限公司 | Impregnation treatment method of loose ore |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918230A (en) * | 2018-08-24 | 2018-11-30 | 河北工程大学 | A kind of preparation method of briquet |
| CN109738257A (en) * | 2019-02-28 | 2019-05-10 | 山东科技大学 | A kind of preparation method of fine coal coal petrography mating plate |
| CN114486891A (en) * | 2022-01-19 | 2022-05-13 | 酒泉钢铁(集团)有限责任公司 | Method for rapidly judging proportion of semi-coke doped in anthracite |
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Application publication date: 20160316 |
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