CN201729818U - High-concentration pulping device for Shenhua coal - Google Patents
High-concentration pulping device for Shenhua coal Download PDFInfo
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- CN201729818U CN201729818U CN2010202739072U CN201020273907U CN201729818U CN 201729818 U CN201729818 U CN 201729818U CN 2010202739072 U CN2010202739072 U CN 2010202739072U CN 201020273907 U CN201020273907 U CN 201020273907U CN 201729818 U CN201729818 U CN 201729818U
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- high density
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- 239000003245 coal Substances 0.000 title claims abstract description 69
- 238000004537 pulping Methods 0.000 title claims abstract description 20
- 239000010117 shenhua Substances 0.000 title abstract 2
- 238000000227 grinding Methods 0.000 claims abstract description 65
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000000654 additive Substances 0.000 claims abstract description 11
- 230000000996 additive effect Effects 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims description 22
- 239000004744 fabric Substances 0.000 claims description 7
- 238000010008 shearing Methods 0.000 claims description 7
- 244000309464 bull Species 0.000 claims description 6
- 238000009827 uniform distribution Methods 0.000 claims description 4
- 239000002002 slurry Substances 0.000 abstract description 18
- 239000002245 particle Substances 0.000 abstract description 11
- 238000002360 preparation method Methods 0.000 abstract description 3
- 238000009826 distribution Methods 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000003250 coal slurry Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000010335 hydrothermal treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000001238 wet grinding Methods 0.000 description 1
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- Crushing And Grinding (AREA)
Abstract
The utility model relates to a high-concentration pulping device for Shenhua coal. The pulping device comprises a coal storage bunker, a crusher and a rough grinding machine which are sequentially connected end to end, wherein the rough grinding machine is provided with two outlets respectively connected with a fine grinding machine and a filter; the outlet of the fine grinding machine is connected with the inlet of the rough grinding machine; the outlet of the filter is connected with a homogenizing slaking pot through a shear pump; the fine grinding machine and the rough grinding machine are communicated with a/an water/additive device; and metering pumps are respectively arranged on a transmission passage positioned between the outlet of the rough grinding machine and the inlet of the fine grinding machine as well as the transmission passage positioned between the water/additive device and the fine grinding machine. The high-concentration pulping device carries out superfine crushing and grinding through crushing and two-stage grinding comprising coarse grinding and fine grinding so as to satisfy the more crushing and less grinding requirement, and greatly reduces the preparation energy consumption of coal water slurry; and the high-concentration pulping device can improve the particle size distribution of coal particles in the coal water slurry in a wet-type rough grinding and wet-type fine grinding combined manner in room temperature, and can prepare the high-concentration coal water slurry that can be applied to industrialization.
Description
Technical field
The utility model relates to a kind of coal water slurry production unit, particularly relates to a kind of Firing Shenhua Coal pulping with high density equipment.
Background technology
Follow The development in society and economy, international oil price has ascendant trend, and fuel resource shortage day by day.Coal water slurry is the ideal substitute of fuel oil, and the concentration of coal water slurry and granularity directly influence the effect that coal water slurry substitutes fuel oil.Firing Shenhua Coal belongs to the lower young coal of metamorphic grade, and water height in it, grindability index are poor.By the coal sludge forming performance index D evaluation that China sets up, Firing Shenhua Coal belongs to difficult pulping coal.Utilize conventional pulping equipment to be difficult to prepare the coal water slurry of high density, therefore be in the state that does not utilize, caused the waste greatly of resource.
A main difficult problem of utilizing the interior high Firing Shenhua Coal of water-content to prepare high-concentration coal-water slurry concentrates on the water-content that reduces coal.The utilization that Chinese patent CN1081201A proposes is being lower than the critical temperature of water (523～647.3K) and carbon monoxide and water when existing, the high low-rank coal of water content is carried out hydrothermal treatment consists (after 0.2～6h), hole wall has hydrophobic nature in the coal, coal body becomes fine and close simultaneously, the water content of coal is reduced, contain the high coal water slurry of coal amount thereby prepare.Though this can improve and decrease the water content of low-rank coal effectively, but owing to adopt high processing temperature and long treatment time, with the lower temperature of industrial requirement and short time be contrary, thereby limited the coal water slurry that Firing Shenhua Coal is widely used in the preparation high density.
The utility model content
At the problems referred to above, it is a kind of under room temperature and short period condition that the utility model provides, and utilizes Firing Shenhua Coal to prepare the production unit of high-concentration coal-water slurry.
For achieving the above object, the utility model is taked following technical scheme: a kind of Firing Shenhua Coal system pulping with high density equipment, comprise by the end to end successively coal store of travelling belt, crusher, rough grinding machine, described rough grinding machine has two outlets, connect atomizer mill and strainer respectively, the outlet of described atomizer mill takes back the inlet of described rough grinding machine, the outlet of described strainer is linked into homogeneous slaking jar by a shearing pump, described atomizer mill all is communicated with one water/additive device with rough grinding machine, on the transmission path between described rough grinding machine outlet and the atomizer mill inlet, and on the transmission path between water/additive device and the atomizer mill, be respectively arranged with volume pump.
Described crusher comprises one broken jar, be provided with opening for feed in broken tank top, a broken jar center is provided with rotating shaft, be disposed with peening hammer, cloth tray and grinding roller from top to bottom along rotating shaft, described peening hammer is connected for cantilever in described rotating shaft with grinding roller, counterpunch board is fixed on inner tank wall and the described peening hammer height correspondence position, the upper and lower dividing plate that is respectively arranged with of described counterpunch board, bull ring is fixed on inner tank wall and the described grinding roller height correspondence position, leaves nature gap 3～7mm between described bull ring and the grinding roller.
Described peening hammer is provided with at described rotating shaft higher slice, and every layer has 4.
Have spiral slot on the described cloth tray card, and the center of coiling certainly is downward-sloping to outer edge.
Described grinding roller is uniform in described rotating shaft to be 4.
Described atomizer mill comprises a mill tube and the motor that is fixed on the steelframe, the described motor stir shaft that extend in the mill tube that vertically is connected, fix many stirring rod on the described stir shaft, opening for feed is arranged on described mill tube bottom, discharge port is arranged on described mill tube top, and described mill tube is the double-layered cylinder structure.
Described mill tube is monomer structure or many bodies cascaded structure, and aspect ratio is 5: 1.
Described stirring rod is for being provided with every the 300mm layering between the upper and lower, and the described stirring rod uniform distribution of each layer be 4, and the linear velocity of described stirring rod outer end is 8m/s.
The utility model is owing to take above technical scheme, it has the following advantages: 1, the utility model grinds by broken overstriking, thin two-stage, three process carries out ultra-fine broken mill, has realized the requirement of " many broken few mills ", has reduced the preparation energy consumption of coal water slurry significantly.2, the utility model can by the combination lapping mode of wet type rough grinding and wet type fine grainding, improve the size-grade distribution of coal grain in the coal water slurry at ambient temperature, prepares the high-concentration coal-water slurry that can carry out industrial applications.3, the utility model is quoted Firing Shenhua Coal, adds an amount of water and additive in process of lapping, has both utilized the water-content of Firing Shenhua Coal, can prepare the coal water slurry of high density again, becomes possibility for utilizing Firing Shenhua Coal to prepare coal water slurry on a large scale.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of crusher in the utility model;
Fig. 3 is the structural representation of atomizer mill in the utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in detail.
As shown in Figure 1, the utility model system architecture mainly comprises coal store 1, crusher 2, rough grinding machine 3, atomizer mill 4, strainer 5, water/additive device 6, shearing pump 7, homogeneous slaking jar 8.Coal store 1 utilizes rotary conveyor and crusher 2 to join, and the discharge gate of crusher 2 inserts rough grinding machine 3.Rough grinding machine 3 has two outlets, inserts atomizer mill 4 and strainer 5 respectively, and the outlet of atomizer mill 4 takes back rough grinding machine 3.The outlet of strainer 5 is connected to shearing pump 7, and shearing pump 7 is linked into homogeneous slaking jar 8 again.Water/additive device 6 inserts rough grinding machine 3 and atomizer mill 4 simultaneously.On the transmission path between rough grinding machine 3 outlets and atomizer mill 4 inlets, and on the transmission path of water/additive device 6 and atomizer mill 4, volume pump 9 and volume pump 9 ' are set respectively.
Characteristics such as the crusher 2 that the utility model provides relies on its particular structure, has the crushing efficiency height, and particle diameter is little, even.As shown in Figure 2, crusher 2 comprises one broken jar 10, is provided with opening for feed 11 at broken jar 10 tops, and broken jar 10 centers are provided with the rotating shaft 12 of driven by motor.Be connected with peening hammer 13, cloth tray 14 and grinding roller 15 from top to bottom in turn along rotating shaft 12.Bull ring 16 is located at inner tank wall and grinding roller 15 equal-height positions.Peening hammer 13 is connected in the rotating shaft 12 by the hammer carrier cantilever, and hammer carrier is set to one group from top to bottom at least, and every group is equipped with 4 peening hammers.Be provided with counterpunch board 17 accordingly with the peening hammer height on inner tank wall, coal charge falls the back and is beaten between peening hammer and counterpunch board 17.Because peening hammer 13 is cantilevered swing in rotating shaft 12, so the joint of the adjustable gaps between peening hammer 13 and the counterpunch board 17.Counterpunch board is respectively arranged with downward-sloping dividing plate 18 on 17 upper and lower positions, is used to prevent that coal charge from being beaten by peening hammer splashes.Have spiral slot on cloth tray 14 cards, and the center of coiling certainly is downward-sloping to outer edge.Cloth tray 14 is caught the coal charge that the top is come, through screening down grinding roller 15 places that slide to the below.Grinding roller 15 also is to be connected in the rotating shaft 12 by grinding roller frame cantilever, and is set to 4, and uniform distribution leaves nature gap 3～7mm between grinding roller 15 and the bull ring 16, be preferably 5mm.Because grinding roller 15 is in the drive lower cantalever swing of rotating shaft 12, so the gap can be regulated automatically by centrifugation.Coal charge is subjected to repeatedly pushing and grinding rapid fragmentation, and when the coal charge particle diminished, outwards expansion rotation of grinding roller 15 had realized that thus most of coal charge particle diameter reaches 3mm, have in addition less than 1mm, guaranteed the homogeneity of product granularity.
The discharge gate of crusher 2 inserts rough grinding machine 3, and rough grinding machine is ball mill or rod mill, and two outlets of rough grinding machine connect atomizer mill 4 and strainer 5 respectively.Because rough grinding machine 3 all is connected water/additive device 6 with atomizer mill 4, so be wet grinding.Atomizer mill 4 also is unique integral part of the present utility model, and as shown in Figure 3, it mainly is made up of parts such as reducing motor 19, single-stage or multistage mill tube 20, agitator 21, supporting steel frames 22.Agitator 21 comprises on the stir shaft 23 that is arranged in the mill tube 20 and the stir shaft some stirring rod 24 is installed.Step-down gear motor 19 and stir shaft 23 direct connection from top to bottom that is inserted in the mill tube 20, stirring rod 24 is installed at stir shaft 23 higher slices, distance between every layer is 300mm, and each layer stirring rod be 4 around stir shaft 23 uniform distribution, and the linear velocity of outer end is 8m/s during stirring rod 24 rotation.Mill tube 20 aspect ratio are 5: 1, and according to power of motor and grinding capacity requirement, mill tube 20 can be set to the structure formation of monomer or many bodies serial connection.Be provided with discharge port 25 on the top of mill tube 20, the bottom is provided with opening for feed 26, and the bottom is provided with puts sand mouth 27.The cylindrical shell of mill tube 20 is originally as the double-layered cylinder structure.The feed particle diameter is less than the coal particle of 1mm, and the coal particle median size of 90% weight ratio then can reach the requirement of ultra-fine mill less than 10 μ m during from atomizer mill 4 dischargings.
The outlet of atomizer mill 4 takes back the inlet of rough grinding machine 3.The material that comes out from strainer 5 is driven into the homogeneous slaking jar 8 through shearing pump 7.
Working process of the present utility model is as follows:
The low order raw coal is carried out super fine crushing, until coal particle size≤3mm, coal grain after the fragmentation is mixed with the mass ratio of water by 6: 4, again mixture is carried out the wet type rough grinding, make the coal particle size≤1000 μ m in the coal slurry that forms after the rough grinding, and the coal grain less than 75 μ m in the coal slurry accounts for more than 50% of dry coal total mass, to be divided into following two portions through the coal oar of wet type rough grinding handles: 1. will be from 15% mixing with the mass ratio of water by 5: 1 that wet type rough grinding machine comes out, then this mixture is carried out the wet type fine grainding, make the coal particle size≤10 μ m in the coal slurry after the wet type fine grainding, the coal slurry after the wet type fine grainding all returns the rough grinding that circulates in the rough grinding machine; 2. will mix the another part that carries out beyond the wet type fine grainding with water and directly be sent to strainer.The coal slurry of sending into strainer is filtered through 18 purpose filtering nets, be driven in the homogeneous slaking jar through shearing pump again, in homogeneous slaking jar, pass through high-speed stirring, leave standstill, perhaps obtain the high-concentration coal-water slurry product after the stirring at low speed.
Obviously, those of ordinary skill in the art can constitute various types of pulping devices with a kind of Firing Shenhua Coal pulping with high density equipment of the present utility model.
The foregoing description is only for the usefulness that the utility model is described; and be not to be to restriction of the present utility model; the those of ordinary skill in relevant technologies field; under the situation that does not break away from the utility model scope; can also make various variations and modification; therefore all technical schemes that are equal to also should belong to category of the present utility model, and scope of patent protection of the present utility model should be limited by each claim.
Claims (8)
1. Firing Shenhua Coal system pulping with high density equipment, it is characterized in that: comprise by the end to end successively coal store of travelling belt (1), crusher (2), rough grinding machine (3), described rough grinding machine (3) has two outlets, connect atomizer mill (4) and strainer (5) respectively, the outlet of described atomizer mill (3) takes back the inlet of described rough grinding machine (3), the outlet of described strainer (5) is linked into homogeneous slaking jar (8) by a shearing pump (7), described atomizer mill (4) all is communicated with one water/additive device (6) with rough grinding machine (3), on the transmission path between described rough grinding machine (3) outlet and atomizer mill (4) inlet, and on the transmission path between water/additive device and the atomizer mill, be respectively arranged with volume pump (9,9 ').
2. a kind of Firing Shenhua Coal system pulping with high density equipment according to claim 1, it is characterized in that: described crusher (2) comprises one broken jar (10), be provided with opening for feed (11) at described broken jar (a 10) top, broken jar (a 10) center is provided with rotating shaft (12), be disposed with peening hammer (13) from top to bottom along rotating shaft (12), cloth tray (14) and grinding roller (15), described peening hammer (13) upward is connected for cantilever in described rotating shaft (12) with grinding roller (15), one counterpunch board (17) is fixed on inner tank wall and the highly corresponding position of described peening hammer (13), on the described counterpunch board (17), under be respectively arranged with dividing plate (18), bull ring (16) is fixed on inner tank wall and described grinding roller (15) the height correspondence position, leaves nature gap 3～7mm between described bull ring (16) and the grinding roller (15).
3. a kind of Firing Shenhua Coal system pulping with high density equipment according to claim 2 is characterized in that: described peening hammer (13) is in described rotating shaft (12) higher slice setting, and every layer is provided with 4 peening hammers (13).
4. a kind of Firing Shenhua Coal system pulping with high density equipment according to claim 2, it is characterized in that: the card of described cloth tray (14) is provided with spiral slot, and described spiral slot is downward-sloping to outer edge from the center of dish.
5. a kind of Firing Shenhua Coal system pulping with high density equipment according to claim 2 is characterized in that: described crusher comprises 4 equally distributed grinding rollers (15) in described rotating shaft.
6. according to claim 1 or 2 or 3 or 4 or 5 described a kind of Firing Shenhua Coal system pulping with high density equipment, it is characterized in that: described atomizer mill comprises a mill tube (20) and the motor (19) that is fixed on the steelframe, described motor (19) stir shaft (23) that extend in the mill tube that vertically is connected, described stir shaft (23) is gone up fixing many stirring rod (24), opening for feed (26) is arranged on described mill tube (20) bottom, discharge port (25) is arranged on described mill tube (20) top, described mill tube (20) is a bilayer structure, and internal layer is a polyhedron.
7. a kind of Firing Shenhua Coal system pulping with high density equipment according to claim 6 is characterized in that: described mill tube (20) aspect ratio is 5: 1.
8. a kind of Firing Shenhua Coal system pulping with high density equipment according to claim 6, it is characterized in that: described stirring rod (24) is for being provided with every the 300mm layering between the upper and lower, and the described stirring rod of each layer (24) uniform distribution is 4, and the linear velocity of described stirring rod (24) outer end is 8m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202739072U CN201729818U (en) | 2010-07-27 | 2010-07-27 | High-concentration pulping device for Shenhua coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202739072U CN201729818U (en) | 2010-07-27 | 2010-07-27 | High-concentration pulping device for Shenhua coal |
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| Publication Number | Publication Date |
|---|---|
| CN201729818U true CN201729818U (en) | 2011-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202739072U Expired - Lifetime CN201729818U (en) | 2010-07-27 | 2010-07-27 | High-concentration pulping device for Shenhua coal |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103013596A (en) * | 2012-11-08 | 2013-04-03 | 内蒙古伊泰煤制油有限责任公司 | System and method for improving concentration of gasified multi-element slurry in coal indirect liquefaction process |
| CN103305297A (en) * | 2013-06-08 | 2013-09-18 | 煤炭科学研究总院 | Gasified water-coal-slurry and preparation method thereof |
| CN103305283A (en) * | 2013-07-02 | 2013-09-18 | 煤炭科学研究总院 | Gasification device and method for preparing gas from high-efficiency coal water slurry |
| CN103436298A (en) * | 2013-09-04 | 2013-12-11 | 煤炭科学研究总院 | Swirl injection type coal water slurry gasification device |
| CN104849109A (en) * | 2014-02-17 | 2015-08-19 | 中煤科工集团武汉设计研究院 | Quantitative water adding coal slurry preparation device |
| CN104893770A (en) * | 2014-08-05 | 2015-09-09 | 浙江煤科清洁能源有限公司 | Process for preparing slurry by mixing Shenhua coal and Pingyi coal |
| CN107312580A (en) * | 2017-07-10 | 2017-11-03 | 湖北宜化化工股份有限公司 | A kind of coal slurry concentrate and technique for treating industrial wastewater and device |
| CN109569845A (en) * | 2018-11-30 | 2019-04-05 | 内蒙古超牌建材科技有限公司 | Ultrafine kaolin level Four powder manufacturing apparatus and ultrafine kaolin and its level Four p owder production technique |
| US10287522B2 (en) | 2013-01-31 | 2019-05-14 | General Electric Company | System and method for preparing coal water slurry |
-
2010
- 2010-07-27 CN CN2010202739072U patent/CN201729818U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103013596A (en) * | 2012-11-08 | 2013-04-03 | 内蒙古伊泰煤制油有限责任公司 | System and method for improving concentration of gasified multi-element slurry in coal indirect liquefaction process |
| CN103013596B (en) * | 2012-11-08 | 2016-05-11 | 内蒙古伊泰煤制油有限责任公司 | A kind of system and method that improves the polynary slurry concentration that gasifies in indirect coal liquefaction technique |
| US10287522B2 (en) | 2013-01-31 | 2019-05-14 | General Electric Company | System and method for preparing coal water slurry |
| CN103305297A (en) * | 2013-06-08 | 2013-09-18 | 煤炭科学研究总院 | Gasified water-coal-slurry and preparation method thereof |
| CN103305297B (en) * | 2013-06-08 | 2015-12-09 | 煤炭科学技术研究院有限公司 | A kind of gasified coal water slurry and preparation method thereof |
| CN103305283A (en) * | 2013-07-02 | 2013-09-18 | 煤炭科学研究总院 | Gasification device and method for preparing gas from high-efficiency coal water slurry |
| CN103436298A (en) * | 2013-09-04 | 2013-12-11 | 煤炭科学研究总院 | Swirl injection type coal water slurry gasification device |
| CN103436298B (en) * | 2013-09-04 | 2015-03-04 | 煤炭科学技术研究院有限公司 | Swirl injection type coal water slurry gasification device |
| CN104849109A (en) * | 2014-02-17 | 2015-08-19 | 中煤科工集团武汉设计研究院 | Quantitative water adding coal slurry preparation device |
| CN104893770A (en) * | 2014-08-05 | 2015-09-09 | 浙江煤科清洁能源有限公司 | Process for preparing slurry by mixing Shenhua coal and Pingyi coal |
| CN107312580A (en) * | 2017-07-10 | 2017-11-03 | 湖北宜化化工股份有限公司 | A kind of coal slurry concentrate and technique for treating industrial wastewater and device |
| CN109569845A (en) * | 2018-11-30 | 2019-04-05 | 内蒙古超牌建材科技有限公司 | Ultrafine kaolin level Four powder manufacturing apparatus and ultrafine kaolin and its level Four p owder production technique |
| CN109569845B (en) * | 2018-11-30 | 2021-08-17 | 内蒙古超牌新材料股份有限公司 | Superfine kaolin four-stage powder preparation equipment, superfine kaolin and four-stage powder preparation production process thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Shenhua Changyun High-Tech Coal Blending Co., Ltd. Assignor: China Shenhua Energy Co|Shenhua coal transportation company|Coal Research Institute Contract record no.: 2012110000067 Denomination of utility model: High-concentration pulping device for Shenhua coal Granted publication date: 20110202 License type: Exclusive License Record date: 20120514 |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Shenhua Changyun High-Tech Coal Blending Co., Ltd. Assignor: China Shenhua Energy Co|Shenhua coal transportation company|Coal Research Institute Contract record no.: 2012110000067 Denomination of utility model: High-concentration pulping device for Shenhua coal Granted publication date: 20110202 License type: Exclusive License Record date: 20120514 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110202 |
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| CX01 | Expiry of patent term |