CN105158043A - Prefabricated stratification briquette coal and production method thereof - Google Patents
Prefabricated stratification briquette coal and production method thereof Download PDFInfo
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- CN105158043A CN105158043A CN201510689530.6A CN201510689530A CN105158043A CN 105158043 A CN105158043 A CN 105158043A CN 201510689530 A CN201510689530 A CN 201510689530A CN 105158043 A CN105158043 A CN 105158043A
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- coal
- moulded coal
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- 239000003245 coal Substances 0.000 title claims abstract description 119
- 239000004484 Briquette Substances 0.000 title claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 title abstract description 3
- 238000013517 stratification Methods 0.000 title abstract 7
- 238000000465 moulding Methods 0.000 claims abstract description 7
- 238000002474 experimental method Methods 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 11
- 239000011280 coal tar Substances 0.000 claims description 10
- 238000007493 shaping process Methods 0.000 claims description 7
- 238000013467 fragmentation Methods 0.000 claims description 2
- 238000006062 fragmentation reaction Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 abstract description 4
- 239000011229 interlayer Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 238000004088 simulation Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The invention provides prefabricated stratification briquette coal and a production method thereof, which are applicable to prefabricated stratification briquette coal which is needed by scientific experiments and has various shapes, and preparation of briquette coal of which soft and hard layer thicknesses has prominent influences on coal and mash gas. The briquette coal is produced by separately preparing a plurality of parts; the molding granularity of the briquette coal, the dosage of coal powder and the molding pressure are controlled so that the interlayer thicknesses of the briquette coal are different and the physical and mechanical properties of the different parts are different, and a stratification surface is formed. According to the prefabricated stratification briquette coal, the influence of raw coal stratification and the thickness of a soft stratification on the physical and mechanical properties of coal bodies can be simulated.
Description
Technical field
The present invention relates to a kind of test moulded coal, be specifically related to a kind of prefabricated bedding test moulded coal and preparation method thereof.
Background technology
The difference such as composition, structure structure, cementing matter, grain size of coal-forming material, makes coal seam have bedding characteristic.The existence of bedding is the essential characteristic of coal petrography, destroys globality and the continuity of coal to a certain extent, and its gas permeation rate for coal body, the impact effect of rock burst, stress wave propagation have impact in various degree.Meanwhile, when the bedding in coal seam is made up of soft, hard coal seam, the thickness of soft layering is the key factor affecting coal and gas prominent.The physico mechanical characteristic of laboratory study coal body, general needs is undertaken by raw coal or moulded coal.Relative to raw coal, moulded coal coal sample has higher homogenieity, can effectively control coal sample porosity.But, tradition moulded coal coal sample is fine coal by the higher cylinder of the homogenieity of different Mould Machining or cube coal body, bedding architecture in simulation raw coal cannot be realized and, on the impact of coal body physico-mechanical properties, also cannot simulate the impact of soft or hard lift height on coal and gas prominent.Along with Coal Exploitation increases deeply, pressure from surrounding rock significantly increases, and coal rock dynamic disaster frequently occurs, soft layering on the impact of coal and gas prominent become remarkable, bedding highlights gradually for the impact of the physico-mechanical properties of coal body, for the research of coal body bedding characteristic, seems particularly important.
Summary of the invention
The object of this invention is to provide a kind of prefabricated bedding moulded coal and preparation method thereof, the deficiency that existing moulded coal exists in test simulation can be made up.
Structure is educated in order to realize the haircut of laboratory simulation run of mine coal seam, and study the impact of soft lift height on coal and gas prominent, the present invention is in moulded coal manufacturing process, adopt new method, moulded coal is divided into some parts, control forming pressure, fine coal consumption, the shaping granularity of different piece, realize moulded coal bedding prefabricated, and the control of each lift height.
Described moulded coal is made up of N (N is more than or equal to 2) part, and each several part briquette molding granularity is R.By the different piece of moulded coal, from respectively called after N1, N2, N3, wherein, the forming pressure of Ni segment type coal is Fi, and shaping granularity is Ri from lower.Especially, as i < j (i, j < N), forming pressure Fi >=Fj.Ri experimentally needs, and controls the granularity needed for prefabricated bedding moulded coal each several part.
A kind of prefabricated bedding moulded coal job operation, it comprises the steps:
(1) carry out fragmentation, grinding to raw coal, become fine coal, reaching experiment needs particle diameter, is generally: below 0.25mm, 0.25-0.5mm, 0.5-1mm etc.
(2) use electronic balance to take the fine coal M1g that the rear particle diameter of grinding is R1, mix with appropriate coal tar, put into moulded coal mould, send in forming machine compressing, when forming pressure reaches F1, pressure keeps 2 hours, and the briquette molding height reached is L1.Obtain the Part I #1 of prefabricated bedding moulded coal.
(3) electronic balance is used to take the fine coal M2g that the rear particle diameter of grinding is R2, mix with appropriate coal tar, add in the moulded coal mould making moulded coal #1 shaping, send in forming machine compressing, when forming pressure reaches F2 (when F1 >=F2, and if only if R1=R2, F1 and F2 may be equal), pressure keeps 2 hours, and the briquette molding height reached is L2.Obtain the Part I #2 of moulded coal.Now, under the effect of F2, #1 and #2 is cemented together, forms first bed plane of prefabricated bedding moulded coal.
(4) repeat step (2), (3), obtain the i-th part #i of prefabricated bedding moulded coal, and the i-th-1 prefabricated bed plane.Moulded coal #1, #2#i, be arranged in moulded coal mould from the bottom up, forming pressure Fi keeps 24 hours, obtains final prefabricated bedding moulded coal.Wherein, the bed plane of prefabricated bedding moulded coal is i-1 layer altogether, and moulded coal overall height is L1+L2++Li.
The present invention, effectively keeping research object Changing Pattern conforming while, simulation layer haircut can educate the impact of the physico-mechanical properties for coal body.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
In figure:
1-moulded coal Part I #1; 2, the prefabricated bedding of 4-moulded coal; 3-moulded coal part 2 #2; 5-moulded coal i-th part #i.
Embodiment
Embodiment 1
Take the fine coal 90g that granularity R1 is below 0.25mm, mix with appropriate coal tar, put into cylindric mould, under forming machine effect, keep pressure 2 hours when forming pressure F1 reaches 500kN, obtain prefabricated bedding moulded coal Part I #1; Take the fine coal 90g that granularity R2 is below 0.25mm, mix with appropriate coal tar, again be added in the cylindric mould of shaping #1 moulded coal, under forming machine effect, pressure is kept 2 hours when forming pressure F2 reaches 400kN, obtain the prefabricated bedding moulded coal of #1, #2 two parts combination, bedding number is 1 layer (particle diameter is identical, and forming pressure is different).
Appeal bedding prefabricated moulded coal #1 length is 39mm, #2 length is have a horizontal line comparatively clearly between 35mm, #1 and #2.
Embodiment 2
The fine coal 90g of to take granularity R1 be fine coal 90g, the granularity R2 of below 0.25mm to be fine coal 90g, the granularity R3 of 0.25-0.5mm be 0.5-1mm, mix with appropriate coal tar respectively, according to particle diameter order from small to large, from lower from putting into cylindric mould, under forming machine effect, pressure is kept 2 hours when forming pressure F1 reaches 400kN, obtain the prefabricated bedding moulded coal that #1, #2, #3 have three incorporating aspects altogether, bedding number is 2 layers (particle diameter is different, and forming pressure is identical).
The particle diameter of moulded coal embodiment 2 is different, and forming pressure is identical, therefore the fine coal of different-grain diameter is put into mould simultaneously compressing, obtains prefabricated bedding moulded coal.
Embodiment 3
Take granularity R1 be below 0.25mm fine coal 90g, mix with appropriate coal tar, put into cylindric mould, under forming machine effect, keep pressure 2 hours when forming pressure F1 reaches 400kN, obtain prefabricated bedding moulded coal Part I #1; Take the fine coal 90g that granularity R2 is 0.25-0.5mm, mix with appropriate coal tar, again be added in the cylindric mould of shaping #1 moulded coal, under forming machine effect, keep pressure 2 hours when forming pressure F2 reaches 300kN, obtain the Part I #1 of prefabricated bedding moulded coal and the combination moulded coal of Part II #2; Take the fine coal 90g that granularity R3 is 0.5-1mm, mix with appropriate coal tar, again add in mould, under forming press effect, when forming pressure F3 reaches 200kN, keep pressure 12 hours.Obtain the prefabricated bedding moulded coal that #1, #2, #3 have three incorporating aspects altogether, bedding number is 2 layers (particle diameter is different, and forming pressure is different).
Appeal example 1,2,3 after testing after, all can meet the requirement of simulation raw coal bedding.
The above example; only to the description in a kind of comparatively simple situation of the present invention; not the present invention is limited; under the premise of not departing from the present invention; the various distortion that the common engineering technical personnel in this area make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determine.
Claims (2)
1. a prefabricated bedding moulded coal, it is characterized in that: moulded coal is divided into some parts, the shaping granularity of each several part, fine coal consumption experimentally needed for determine, each several part forming pressure reduces gradually the end of to top, between moulded coal different piece, thickness is different, define bedding, described moulded coal is cylinder or square body.
2. a job operation for prefabricated bedding moulded coal as claimed in claim 1, is characterized in that: comprise the steps:
(1) carry out fragmentation, grinding to raw coal, become fine coal, reaching experiment needs particle diameter: below 0.25mm, 0.25-0.5mm, 0.5-1mm;
(2) use electronic balance to take the fine coal M1g that the rear particle diameter of grinding is R1, mix with enough coal tar, put into moulded coal mould, send in forming machine compressing, when forming pressure reaches F1, pressure keeps 2 hours, and the briquette molding height reached is L1; Obtain the Part I #1 of prefabricated bedding moulded coal;
(3) electronic balance is used to take the fine coal M2g that the rear particle diameter of grinding is R2, mix with enough coal tar, add in the moulded coal mould making moulded coal #1 shaping, send in forming machine compressing, when forming pressure reaches F2, pressure keeps 2 hours, the briquette molding height reached is L2, when wherein F1 >=F2, and if only if R1=R2, F1 and F2 may be equal; Obtain the Part I #2 of moulded coal; Now, under the effect of F2, #1 and #2 is cemented together, forms first bed plane of prefabricated bedding moulded coal;
(4) repeat step (2), (3), obtain the i-th part #i of prefabricated bedding moulded coal, and the i-th-1 prefabricated bed plane; Moulded coal #1, #2#i, be arranged in moulded coal mould from the bottom up, forming pressure Fi keeps 24 hours, obtains final prefabricated bedding moulded coal; Wherein, the bed plane of prefabricated bedding moulded coal is i-1 layer altogether, and moulded coal overall height is L1+L2++Li.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510689530.6A CN105158043A (en) | 2015-10-22 | 2015-10-22 | Prefabricated stratification briquette coal and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510689530.6A CN105158043A (en) | 2015-10-22 | 2015-10-22 | Prefabricated stratification briquette coal and production method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518209A (en) * | 2018-02-14 | 2018-09-11 | 中联煤层气有限责任公司 | Consider that the azimuthal design method of well track is adopted in the coal measures payzone combination of intermediate zone |
| CN110376347A (en) * | 2019-07-12 | 2019-10-25 | 太原理工大学 | A kind of research model and its construction method of coal |
| WO2020252989A1 (en) * | 2019-06-21 | 2020-12-24 | 中国矿业大学 | Method for simulating equivalent on-site soft coal in laboratory |
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| US20030046864A1 (en) * | 2001-08-30 | 2003-03-13 | Kabushiki Kaisha Kobe Seiko Sho. | Coal briquette and production thereof |
| CN102297929A (en) * | 2011-07-06 | 2011-12-28 | 河南理工大学 | Tectonic coal pressure relief and outburst simulation experiment device |
| CN102928272A (en) * | 2012-10-24 | 2013-02-13 | 河南理工大学 | Briquette coal sample making tool and method |
| CN103771781A (en) * | 2014-01-02 | 2014-05-07 | 中煤科工集团重庆研究院有限公司 | Similar material for coal and gas outburst simulation experiment and preparation method thereof |
| CN204389254U (en) * | 2015-01-19 | 2015-06-10 | 中国矿业大学(北京) | A kind of deformation coal raw coal sample preparation device |
| CN104820084A (en) * | 2015-05-14 | 2015-08-05 | 安徽理工大学 | Coal and gas outburst similarity simulation test method based on geological mechanical model test |
-
2015
- 2015-10-22 CN CN201510689530.6A patent/CN105158043A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030046864A1 (en) * | 2001-08-30 | 2003-03-13 | Kabushiki Kaisha Kobe Seiko Sho. | Coal briquette and production thereof |
| CN102297929A (en) * | 2011-07-06 | 2011-12-28 | 河南理工大学 | Tectonic coal pressure relief and outburst simulation experiment device |
| CN102928272A (en) * | 2012-10-24 | 2013-02-13 | 河南理工大学 | Briquette coal sample making tool and method |
| CN103771781A (en) * | 2014-01-02 | 2014-05-07 | 中煤科工集团重庆研究院有限公司 | Similar material for coal and gas outburst simulation experiment and preparation method thereof |
| CN204389254U (en) * | 2015-01-19 | 2015-06-10 | 中国矿业大学(北京) | A kind of deformation coal raw coal sample preparation device |
| CN104820084A (en) * | 2015-05-14 | 2015-08-05 | 安徽理工大学 | Coal and gas outburst similarity simulation test method based on geological mechanical model test |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518209A (en) * | 2018-02-14 | 2018-09-11 | 中联煤层气有限责任公司 | Consider that the azimuthal design method of well track is adopted in the coal measures payzone combination of intermediate zone |
| CN108518209B (en) * | 2018-02-14 | 2020-06-26 | 中联煤层气有限责任公司 | Design method for coal-series production layer combined well hole track azimuth angle considering transition zone |
| WO2020252989A1 (en) * | 2019-06-21 | 2020-12-24 | 中国矿业大学 | Method for simulating equivalent on-site soft coal in laboratory |
| AU2019445396B2 (en) * | 2019-06-21 | 2021-10-07 | China University Of Mining And Technology | Method for simulating equivalent field soft coal in laboratory |
| CN110376347A (en) * | 2019-07-12 | 2019-10-25 | 太原理工大学 | A kind of research model and its construction method of coal |
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