CN102192520B - Method for preparing ash water coal slurry - Google Patents
Method for preparing ash water coal slurry Download PDFInfo
- Publication number
- CN102192520B CN102192520B CN 201010124876 CN201010124876A CN102192520B CN 102192520 B CN102192520 B CN 102192520B CN 201010124876 CN201010124876 CN 201010124876 CN 201010124876 A CN201010124876 A CN 201010124876A CN 102192520 B CN102192520 B CN 102192520B
- Authority
- CN
- China
- Prior art keywords
- coal
- slurry
- preparation
- ash content
- cleaned
- 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.)
- Expired - Fee Related
Links
- 239000003250 coal slurry Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 5
- 239000003245 coal Substances 0.000 claims abstract description 83
- 239000002002 slurry Substances 0.000 claims abstract description 33
- 239000002956 ash Substances 0.000 claims description 33
- 239000002245 particle Substances 0.000 claims description 31
- 238000002360 preparation method Methods 0.000 claims description 22
- 235000002918 Fraxinus excelsior Nutrition 0.000 claims description 14
- 238000000926 separation method Methods 0.000 claims description 12
- 238000009837 dry grinding Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims 1
- 239000000446 fuel Substances 0.000 abstract description 12
- 238000009826 distribution Methods 0.000 abstract description 2
- 239000012467 final product Substances 0.000 abstract 1
- 239000004615 ingredient Substances 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 10
- 239000011707 mineral Substances 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- 239000003921 oil Substances 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 2
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 2
- 244000046052 Phaseolus vulgaris Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000010071 organism adhesion Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 238000004380 ashing Methods 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Images
Landscapes
- Liquid Carbonaceous Fuels (AREA)
Abstract
The invention relates to a method for preparing ash water coal slurry. The method comprises the following steps: A. crushing coal below the upper limit of the stipulated grain size in a wet or dry method crushing mode and preparing slurry body of appropriate concentration; B. separating the coal prepared from the step A by a slurry body grain separating device into tail coal, middlings and cleaned coal from top to bottom, regulating the cleaned coal output proportion according to the ash content of the final product, and outputting cleaned coal slurry body and tail coal slurry body; and C. crushing the middlings generated from the step B again by a wet method, wherein the upper limit of grain size can be respectively 0.2mm, 0.01mm or 0.001mm, and the ash ingredient content can be respectively below 2%, 1% or 0.5%. Through the method, the productivity of the cleaned coal can be improved obviously, simultaneously the grain size distribution of coal slurry body fuel can be improved, thus the mobility of fuel can be improved, or the grain size concentration of fuel can be improved.
Description
Technical field
The present invention relates to a kind of preparation method of water-coal-slurry, further relate to a kind of preparation method of ultralow ash content water-coal-slurry.
Background technology
The coal derived fuel COAL-WATER SLURRY TECHNOLOGY of the alternative heavy boiler oil fuel of existing preparation has successfully solved fragmentation of coal char particles slurrying problem, and has obtained commercial Application widely.But utilize the more direct oil product that substitutes more widely of coal derived fuel, directly use coal-based fuel slurry as not transforming oil burning boiler, coal-based fuel slurry is used for internal combustion engine or gas turbine, and ash content especially may cause the inorganic particle composition of equipment attrition in the further reduction of the needs coal.The preparation method of existing super clean coal can be referring to the patent of invention CN97116584 of Granted publication on the 8th January in 2003, its principle is to add oil emulsion in being broken into the water-coal-slurry of subparticle, make the coal particle of surface hydrophobicity form bigger granule, and hydrophilic mineral grain can conglomeration, selects ultralow grey cleaned coal with the regular-type foam floatation then.The shortcoming of this method is relatively poor to the coal effect that contains more hydrophobic troilite composition, needs to consume more medicament, and the content of ashes of final products is wayward but depend on the character of feed coal generally.
Summary of the invention
The present invention has introduced a kind of medicament that do not need to consume, to the method for the water-coal-slurry that contains the ultralow ash content of preparation of industrialization that more troilite composition coal stands good.
This method may further comprise the steps:
Method one
A. be crushed to feed coal below the designated size upper limit with wet method or dry milling mode and make the slurry of debita spissitudo;
B. with slurry slurry particles separation equipment the coal of steps A preparation is divided from high to low by density and elect tail coal, middle coal and cleaned coal as, adjust the cleaned coal export ratio according to final products content of ashes standard, output cleaned coal slurry and tail coal slurry;
C. broken again with wet method to the middle coal of step B generation;
D. the product of step C enters step B.
If the steps A of above method adopts wet crushing, its step can also be adjusted into:
Method two
A. with the wet crushing mode that feed coal is broken and be classified to below the designated size upper limit and make the suitable slurry of concentration;
B. with the slurry particles separation equipment coal of steps A preparation is divided from high to low by density and elect tail coal, middle coal and cleaned coal as, adjust the cleaned coal export ratio according to final products content of ashes standard, output cleaned coal slurry and tail coal slurry;
C. the middle coal of step B generation enters steps A.
The theoretical foundation of this method be most mineralogical compositions of coal be independent exist or with the mineral grain of the organism adhesion of coal; mineral grain or only contain a small amount of organic intergrowth and be higher than the pure organism of coal because of its proportion independently; in common coal separation process, go out so that the form of spoil is separated; be more or less the same with the mineral grain of the coal organism adhesion of close or higher proportion proportion and the pure coal particle because of particle integral body, in the jigging process, be difficult to separated.After fragmentation that this part intergrowth is circulated, organism and mineral grain finally can to dissociating, and in the slurry particles separation process, be sorted in cleaned coal or the tail coal product.The small amounts of inorganic mineralogical composition that enters final products at last comprises the mineral matter that is present in the non-particulate form in the coal particle, superfine and the dispensed in small quantity of particle is attached on the coal particle or little of the indissociable mineral grain of slurry particles separation equipment in coal particle mineral and particle are superfine.
This method can obviously improve the productive rate of cleaned coal, can also improve the grain size distribution of coal slurry fluid fuel simultaneously, thereby improves the granule density of the mobile of fuel or raising fuel.
In these steps, centrifugal jigging is critical step.According to Stoke's law, when coal particle is crushed to below the certain particle, sinking speed is very slow in traditional gravity slurry after the match, even sedimentation does not take place under the interference of the micro force between particle and the atomic thin particulate matter in the slurry, therefore common jigging equipment can not carry out sorting to it.The principle of centrifugal jig be with common jigging machine place centrifugal force and gravity synthetic have a field of force of tens of times of acceleration of gravity at least, make small coal particle be able to enough sedimentations fast take place in slurry, therefore can eliminate choosing to the fine coal slurry body.The details of this centrifugal jig is having been described in detail among the disclosed Chinese patent application CN201010123867.8 prior to this patent.
When the slurry product granularity upper limit and particle mean size are big, as being limited to 0.2mm on the granularity, during the about 0.075mm of particle mean size, can use other slurry particles separation equipment.Falcon C series centrifugal ore separator as Canadian SEPRO SYSTEMSINTERNATIONAL company (be positioned at Canada, inferior poem is economized) production.This equipment can only be isolated two kinds of products, and therefore every slurry is divided into cleaned coal, middle coal and tail coal needs to be divided into two steps at least.
Tail coal described in the method step refers to contain the high specific gravity sorting product of more inorganic mineral composition, also is called spoil in the industry sometimes.
Final products described in the method step refer to that the institute of this method obtains target product cleaned coal slurry when finishing in steps.
Wet crushing described in the method step can adopt commercially available ball mill, rod mill, stirring mill, also can adopt the jet crushing technology.Prior to having introduced a kind of slurry particles breaker that fully utilizes jet crushing and stir the mill principle among the disclosed Chinese patent application CN201010123854.0 of this patent, be specially adapted to the described wet crushing of this patent.
Dry milling described in the method step can be used commercially available dry ball, column mill, also can be with reference to the vertical axis whirlpool fluidized bed dry type refiner of US Patent No. 5695130 introductions of authorizing on November 9th, 1997.
Debita spissitudo described in the method step refers to that the concentration of slurry is convenient to carry with pump, can be higher or lower than the concentration of final products.
The granularity upper limit described in the method step, final products for different purposes are individual inequality, be to replace heavy oil as boiler oil such as final use, its granularity upper limit can be at 0.2mm, if replace diesel oil as automotive fuel, its granularity upper limit is possibly below 0.01mm, even below the 0.001mm.
Final products content of ashes standard is also inequality according to different purposes, and as for the production of carburant, active carbon, content of ashes is not more than 2% or 1%, substitutes diesel oil as being used for, and then ash content need be not more than 0.5% even lower.Content of ashes refers to account for by the ash content that slow ashing method records the percentage composition of moisture-free coal matrix amount.
Adjusting the cleaned coal export ratio according to final products content of ashes standard refers to adjust cleaned coal output quantity in the slurry particles separation process according to the content of ashes standard of the character of feed coal and final products, if the feed coal content of ashes is low, the final products ash content can be higher, then the cleaned coal output quantity is big, cleaned coal export ratio height, on the contrary the cleaned coal export ratio is low.
This method there is no specific (special) requirements to concrete kind, the source of raw materials used coal, but considers purposes and the production efficiency of final products, is preferred to select low less low-ash bituminous coal or the anthracite of ash content, especially argillaceous mineral composition.Because clay mineral easily becomes atomic thin particle and is attached on coal particle in refining process, increased the content of ashes of final products.
Handle as roughly select for the generality of feed coal, preliminary broken and to the irrelevant processing of final products and deliming as dehydration, slurry concentration adjustment or adding stabilizing agent etc., because it is industry general knowledge, so be omitted in this manual.
Description of drawings
Accompanying drawing 1 is with the meticulous preparation flow schematic diagram that is broken for main ultralow culm of dry type
Accompanying drawing 2 is with the meticulous preparation flow schematic diagram that is broken for main ultralow culm of wet type
The specific embodiment
Embodiment 1
Referring to accompanying drawing 1, pour smart beans into coalpit 1, with elevator chain bucket 2 with coal displacement pile grinding machine 3, whenever, be crushed to granularity-0.1mm through column mill, send into agitator 5 with belt conveyor 4, adding the water stirring by water-supply-pipe 11 allocates to concentration about 65%, with stock pump 6 input centrifugal jigs 7, regulate clean coal yield, make gray scale be no more than 2%, eliminate the cleaned coal slurry that selects in the product and pump into cleaned coal slurry storage tank 8 or enter subsequent handling, eliminate that the tail coal oar that selects in the product pumps into tail coal storage tank 9 or the outward transport of dewatering, eliminate the middle coal slurry pump that selects in the product and go into ball mill 10 and carry out wet lapping, the blowback agitator 5 then.
Embodiment 2
Referring to accompanying drawing 2, pour smart beans into coalpit 1, with elevator chain bucket 2 coal is sent into double-roll crusher 12, coal is crushed to granularity-0.5mm through double-roll crusher, send into agitator 5 with belt conveyor 4, adding the water stirring by water-supply-pipe 11 allocates to concentration about 65%, be forced into 10-40MPa with the reciprocal stock pump 13 of high pressure, inject slurry particles breaker 14, the granularity of output pumps into centrifugal jig 7 at the qualified slurry of-0.01mm from 14, granularity is at the slurry blowback agitator 5 of+0.01mm, regulate clean coal yield, make gray scale be no more than 0.5%, eliminate the cleaned coal slurry that selects in the product and pump into cleaned coal slurry storage tank 8 or enter subsequent handling, eliminate that the tail coal slurry that selects in the product pumps into tail coal storage tank 9 or the outward transport of dewatering, eliminate the middle coal slurry blowback agitator 5 that selects in the product.
Claims (10)
1. the preparation method of a ultralow ash content water-coal-slurry is characterized in that may further comprise the steps:
A. be crushed to coal below the designated size upper limit with wet method or dry milling mode and make the slurry of debita spissitudo;
B. with the slurry particles separation equipment coal of steps A preparation is divided from high to low by density and elect tail coal, middle coal and cleaned coal as, adjust the cleaned coal export ratio according to final products content of ashes standard, output cleaned coal slurry and tail coal slurry;
C. broken again with wet method to the middle coal of step B generation;
D. the product of step C enters step B.
2. the preparation method of a ultralow ash content water-coal-slurry is characterized in that may further comprise the steps
A. with the wet crushing mode that coal is broken and be classified to below the designated size upper limit and make the suitable slurry of concentration;
B. with the slurry particles separation equipment coal of steps A preparation is divided from high to low by density and elect tail coal, middle coal and cleaned coal as, adjust the cleaned coal export ratio according to final products content of ashes standard, output cleaned coal slurry and tail coal slurry;
C. the middle coal of step B generation enters steps A.
3. the preparation method of ultralow ash content water-coal-slurry as claimed in claim 1 or 2 is characterized in that the described granularity upper limit is at 0.2mm.
4. the preparation method of ultralow ash content water-coal-slurry as claimed in claim 1 or 2 is characterized in that the described granularity upper limit is at 0.01mm.
5. the preparation method of ultralow ash content water-coal-slurry as claimed in claim 1 or 2 is characterized in that the described granularity upper limit is at 0.001mm.
6. the preparation method of ultralow ash content water-coal-slurry as claimed in claim 1 or 2 is characterized in that described final products content of ashes is not more than 2%.
7. the preparation method of ultralow ash content water-coal-slurry as claimed in claim 1 or 2 is characterized in that described final products content of ashes is not more than 1%.
8. the preparation method of ultralow ash content water-coal-slurry as claimed in claim 1 or 2 is characterized in that described final products ash content contains to be not more than 0.5%.
9. the preparation method of ultralow ash content water-coal-slurry as claimed in claim 1 or 2 is characterized in that it is disclosed slurry particles breaker in the patent specification of CN201010123854.0 that described wet crushing adopts number of patent application; Described slurry particles breaker comprises a broken portion, it is characterized in that described broken portion comprises revolution ring-type crusher chamber, at least one cover nozzle combination and discharge gate; Jet is positioned at the lateral wall of crusher chamber, its center line and the tangent or oblique of crusher chamber center line, wherein install and hold high pressure nozzle, each jet be installed on its inner high pressure nozzle and form cover nozzle combination, discharge gate is positioned at the inboard of crusher chamber, be communicated with ring cavity, the sectional area of the annular crusher chamber of described revolution and the sectional area of discharge gate are all much larger than the sectional area sum of all nozzles.
10. the preparation method of ultralow ash content water-coal-slurry as claimed in claim 1 or 2 is characterized in that described slurry particles separation equipment is that number of patent application is disclosed centrifugal jig in the patent specification of CN201010123867.8; Described centrifugal jig is made of whirligig, at least one jigging unit and product receiving system; Described whirligig comprises rotary body and pedestal, and rotary body can steadily rotate around a vertical axis under power drive; Described jigging unit comprises chamber, sieve plate, charging gear, discharge device and palsating equipment on the following chamber of sieve, the sieve, be installed on the rotary body of described whirligig by certain angle of inclination along its material moving direction, the chamber is positioned at the position away from vertical axis under its sieve, for separating of the different particle of the density in the slurry material; The product receiving system is for being fixed on ground, is used for receiving that the jigging unit of rotation discharges finishes separation of material; It is characterized in that described jigging unit adopts sieve to go up discharge gate and discharges the main material of having finished separation.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010124876 CN102192520B (en) | 2010-03-16 | 2010-03-16 | Method for preparing ash water coal slurry |
| AU2011229688A AU2011229688B2 (en) | 2010-03-15 | 2011-03-15 | Preparation method for ultra low ash coal-water slurry |
| US13/635,669 US20130061516A1 (en) | 2010-03-15 | 2011-03-15 | Preparation method for ultra low ash coal-water slurry |
| PCT/CN2011/071791 WO2011113342A1 (en) | 2010-03-15 | 2011-03-15 | Preparation method for ultra low ash coal-water slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010124876 CN102192520B (en) | 2010-03-16 | 2010-03-16 | Method for preparing ash water coal slurry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102192520A CN102192520A (en) | 2011-09-21 |
| CN102192520B true CN102192520B (en) | 2013-07-10 |
Family
ID=44601123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010124876 Expired - Fee Related CN102192520B (en) | 2010-03-15 | 2010-03-16 | Method for preparing ash water coal slurry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102192520B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10287522B2 (en) | 2013-01-31 | 2019-05-14 | General Electric Company | System and method for preparing coal water slurry |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103849440B (en) | 2012-11-30 | 2018-03-27 | 通用电气公司 | Prepare the apparatus and method of water-coal-slurry |
| CN104031702B (en) * | 2014-06-19 | 2017-01-04 | 无锡市恒烽水煤浆有限公司 | High concentration mixing water coal slurry |
| CN105623756B (en) * | 2014-10-30 | 2017-12-08 | 中国石油化工股份有限公司 | Water-coal-slurry is mixed with using RO sewage and VAE emulsions wastewaters |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2141135A (en) * | 1983-05-21 | 1984-12-12 | Electric Power Dev Co | Preparation of deashed high solid concentration coal-water slurry |
| CN85109744A (en) * | 1984-11-20 | 1986-11-05 | 电源开发株式会社 | Preparation of High Solid Concentration Water Slime with Ash Removal |
| CN86100898A (en) * | 1986-02-18 | 1987-09-02 | 洛旺(管理)有限公司 | Centrifugal sifting machine |
| CN1042670A (en) * | 1988-11-18 | 1990-06-06 | 沃尔特·埃利希 | Stirring ball mill |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5929289B2 (en) * | 1980-11-20 | 1984-07-19 | 日立造船株式会社 | Granulation equipment |
-
2010
- 2010-03-16 CN CN 201010124876 patent/CN102192520B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2141135A (en) * | 1983-05-21 | 1984-12-12 | Electric Power Dev Co | Preparation of deashed high solid concentration coal-water slurry |
| CN85109744A (en) * | 1984-11-20 | 1986-11-05 | 电源开发株式会社 | Preparation of High Solid Concentration Water Slime with Ash Removal |
| CN86100898A (en) * | 1986-02-18 | 1987-09-02 | 洛旺(管理)有限公司 | Centrifugal sifting machine |
| CN1042670A (en) * | 1988-11-18 | 1990-06-06 | 沃尔特·埃利希 | Stirring ball mill |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10287522B2 (en) | 2013-01-31 | 2019-05-14 | General Electric Company | System and method for preparing coal water slurry |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102192520A (en) | 2011-09-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2011229688B2 (en) | Preparation method for ultra low ash coal-water slurry | |
| JP2532231B2 (en) | Energy efficient grinding method and apparatus | |
| CN101955824B (en) | Complete two-stage slurry production equipment of water-coal-slurry and gasified water-coal-slurry by using low-rank coal fuel | |
| CN105228750B (en) | Grinding device | |
| CN102192520B (en) | Method for preparing ash water coal slurry | |
| CN1114242A (en) | Method and device for grinding material particles | |
| CN111570053B (en) | Crushing and grinding process method and crushing and grinding process equipment | |
| CN213050984U (en) | Crushing and grinding process technological equipment | |
| CN201445981U (en) | Novel ball mill | |
| CN113856871A (en) | A coal cinder reducing mechanism for coal mining | |
| CN110560254A (en) | separation process for reducing sulfur and ash in coal | |
| CN205088200U (en) | Multiple low -quality coal grinds respectively and becomes thick liquid system altogether | |
| CN201762299U (en) | Complete set of equipment for producing coal water slurry fuel and gasification coal water slurry by low rank coal | |
| CN104402012B (en) | The white calcination kleit preparation method of ultra-fine height | |
| CN106391266A (en) | Ceramic raw material continuous pulping system and process | |
| EP0188869B1 (en) | Process for producing a coal-water slurry | |
| CN201762298U (en) | Complete set of equipment for producing coal water slurry fuel and gasification coal water slurry by low rank coal in two stages | |
| RU141736U1 (en) | COAL PRODUCT LINE | |
| CN212189500U (en) | A raw materials milling machine for carbon production | |
| CN1314492C (en) | Two-stage grinding-classifying process for preparing alumina pulp | |
| CN101811077A (en) | Conical pulverizing mill | |
| CN208288115U (en) | A kind of grinder | |
| CN207567187U (en) | A kind of coal slirne production system | |
| CA2697899A1 (en) | Grinding circuit with cyclone and density separator classification system and method | |
| CN207324949U (en) | A kind of high efficiency energy saving food level powdered whiting continuous producing apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Qinzhou AuraSource Technology Inc. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Patent director of Qinzhou Xin Energy Technology Co., Ltd Document name: Notice of termination of patent |
|
| DD01 | Delivery of document by public notice | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20200316 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |