CN102992803A - Air-added brick with slag as matrix and method for processing same - Google Patents
Air-added brick with slag as matrix and method for processing same Download PDFInfo
- Publication number
- CN102992803A CN102992803A CN2012103207616A CN201210320761A CN102992803A CN 102992803 A CN102992803 A CN 102992803A CN 2012103207616 A CN2012103207616 A CN 2012103207616A CN 201210320761 A CN201210320761 A CN 201210320761A CN 102992803 A CN102992803 A CN 102992803A
- Authority
- CN
- China
- Prior art keywords
- slag
- parts
- air
- matrix
- aerated bricks
- 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.)
- Granted
Links
- 239000011449 brick Substances 0.000 title claims abstract description 45
- 239000002893 slag Substances 0.000 title claims abstract description 31
- 239000011159 matrix material Substances 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000012545 processing Methods 0.000 title claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 239000004927 clay Substances 0.000 claims abstract description 8
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 7
- 239000004568 cement Substances 0.000 claims abstract description 7
- 239000000919 ceramic Substances 0.000 claims abstract description 7
- 238000009413 insulation Methods 0.000 claims abstract description 7
- 229910052742 iron Inorganic materials 0.000 claims abstract description 7
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000011574 phosphorus Substances 0.000 claims abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 6
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 4
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims abstract description 4
- 239000012188 paraffin wax Substances 0.000 claims abstract description 4
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 4
- 239000000344 soap Substances 0.000 claims abstract description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000843 powder Substances 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 7
- 229940037003 alum Drugs 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 238000012986 modification Methods 0.000 claims description 6
- 230000004048 modification Effects 0.000 claims description 6
- -1 polyethylene Polymers 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000007858 starting material Substances 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- JXLHNMVSKXFWAO-UHFFFAOYSA-N azane;7-fluoro-2,1,3-benzoxadiazole-4-sulfonic acid Chemical compound N.OS(=O)(=O)C1=CC=C(F)C2=NON=C12 JXLHNMVSKXFWAO-UHFFFAOYSA-N 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- JBSLOWBPDRZSMB-FPLPWBNLSA-N dibutyl (z)-but-2-enedioate Chemical compound CCCCOC(=O)\C=C/C(=O)OCCCC JBSLOWBPDRZSMB-FPLPWBNLSA-N 0.000 claims description 3
- 229920005610 lignin Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 230000000284 resting effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 abstract 1
- 230000008014 freezing Effects 0.000 abstract 1
- 238000007710 freezing Methods 0.000 abstract 1
- 239000010451 perlite Substances 0.000 abstract 1
- 235000019362 perlite Nutrition 0.000 abstract 1
- 229920002451 polyvinyl alcohol Polymers 0.000 abstract 1
- 229910052720 vanadium Inorganic materials 0.000 abstract 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 abstract 1
- 239000002956 ash Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Processing Of Solid Wastes (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses an air-added brick with slag as matrix and a method for processing the same. The air-added brick is composed of the raw materials according to parts by weight: 10-15 parts of iron ore tailings, 5-10 parts of phosphorus slag, 10-20 parts of blast furnace slag, 10-15 parts of vanadium ore tailings, 5-8 parts of cement, 5-10 parts of kaolin, 14-16 parts of expanded perlite, 4-5 parts of ceramic clay, 0.03-0.05 part of aluminum powder, 5-10 parts of modified plant ash, 0.03-0.04 part of oxidated paraffin soap, 0.01-0.02 part of aluminium hydroxide, 0.01-0.02 part of water glass and 0.3-0.5 part of ultrafine polyvinyl alcohol. The air-added brick employs the slag as the matrix thereof, so that the environmental pollution is effectively reduced, the waste material is changed into things of value and the environment is protected; the energy consumption is reduced; the air-added brick is excellent in both of heat insulation and sound insulation properties and is obviously improved in contrast with the existing air-added brick; and simultaneously, the air-added brick is obviously improved in strength and freezing resistance by optimizing the materials in the formula.
Description
Technical field
The present invention relates to the building material field, specifically belong to a kind of aerated bricks and working method thereof take slag as matrix.
Background technology
Aerated bricks is the aerated bricks building block of producing by the autoclave at high temperature apparatus and process, namely adopt the brick product of other various explained hereafter that comprise steam pressure, aerated bricks is a kind of novel wall material, its unique distinction is that it is a kind of novel building walling of very light-duty heat insulating, and the relatively evening that this technology of China begins, totally fallen behind 40 years than abroad, but, the development of the aerated bricks industry of China is really very fast, and domestic aerated bricks technical matters level can reach international most advanced level now.
The aerated bricks sharpest edges economize the land resource exactly, need not waste a large amount of arable lands, and the source of its raw material very extensively, dust and sand, slag, flyash and coal gangue etc. all are the starting material of doing aerated bricks, and very superior of the performance characteristics of aerated bricks, but extraordinary working ability and heat insulation and insulated capacity are arranged, and very strong of plasticity-, extraordinary processing characteristics is arranged, and the research of aerated bricks raw material and processing technology need further to improve.
Summary of the invention
The object of the present invention is to provide a kind of aerated bricks and working method thereof take slag as matrix, the slag consumption is large, energy-conserving and environment-protective, alleviates slag and stores up the problem of environmental pollution that processing brings, and provides new raw material sources for aerated bricks simultaneously.
The present invention adopts following technical scheme to achieve these goals:
Aerated bricks take slag as matrix, the weight part of its constitutive material is: iron ore tailings 10-15, phosphorus ore slag 5-10, blast-furnace slag 10-20, alum ore deposit tailings 10-15, cement 5-8, kaolin 5-10, pearlstone 14-16, ceramic clay 4-5, aluminium powder 0.03-0.05, modification plant ash 5-10, oxidized paraffin wax soap 0.03-0.04, aluminium hydroxide 0.01-0.02, water glass 0.01-0.02 and micronized polyethylene alcohol 0.3-0.5.
The working method of the aerated bricks take slag as matrix may further comprise the steps:
(1) raw-material processing: starting material comprise iron ore tailings, phosphorus ore slag, blast-furnace slag, alum ore deposit tailings, cement, kaolin, pearlstone, ceramic clay and aluminium powder; Be crushed to fineness and reach the 180-200 order;
(2) stir: Xian Jiashui stirs separately, and then mix and blend also adds other surplus stocks in the raw material by weight;
(3) cast: the slurry that step (2) is stirred adds in the stock mould, obtains the brick idiosome;
(4) rest: the brick idiosome of step (3) is put into the chamber of resting, rest chamber sealing thermal insulation 40-45 ℃, rested time 1-3 hour;
(5) cutting: the brick idiosome that step (4) is rested is put into and is processed into certain desired size on the cutting machine;
(6) steam-cured: that the green compact of above-mentioned steps (5) at 0.8-1.0Mpa vapor cure 16-19h, are namely got the aerated bricks finished product.
Modification plant ash is that plant ash is admixed the calcium lignin sulphonate agitating with dibutyl maleinate, 1-2% that is equivalent to powder weight 1-2% is even, and oven dry is ground into powder and obtains.
Beneficial effect of the present invention:
The present invention has effectively reduced environmental pollution by adopting slag as the composition of aerated bricks, turns waste into wealth, and has protected environment; Reduced energy consumption; Aerated bricks of the present invention is heat insulation all good with sound-proofing properties, and existing aerated bricks is significantly improved; Simultaneously the present invention is by the optimization of C/C composites materials, and intensity of the present invention, frost resistance are significantly improved.
Embodiment
Embodiment 1: the aerated bricks take slag as matrix, the weight part of its constitutive material is: iron ore tailings 10-12, phosphorus ore slag 8-10, blast-furnace slag 10-12, alum ore deposit tailings 10-12, cement 6-8, kaolin 8-10, pearlstone 14-16, ceramic clay 4-5, aluminium powder 0.03-0.05, modification plant ash 9-10, oxidized paraffin wax soap 0.03-0.04, aluminium hydroxide 0.01-0.02, water glass 0.01-0.02 and micronized polyethylene alcohol 0.3-0.5.
The working method of the aerated bricks take slag as matrix may further comprise the steps:
(1) raw-material processing: starting material comprise iron ore tailings, phosphorus ore slag, blast-furnace slag, alum ore deposit tailings, cement, kaolin, pearlstone, ceramic clay and aluminium powder; Be crushed to fineness and reach the 180-200 order;
(2) stir: Xian Jiashui stirs separately, and then mix and blend also adds other surplus stocks in the raw material by weight;
(3) cast: the slurry that step (2) is stirred adds in the stock mould, obtains the brick idiosome;
(4) rest: the brick idiosome of step (3) is put into the chamber of resting, rest chamber sealing thermal insulation 40-45 ℃, rested time 1-3 hour;
(5) cutting: the brick idiosome that step (4) is rested is put into and is processed into certain desired size on the cutting machine;
(6) steam-cured: that the green compact of above-mentioned steps (5) at 0.8-1.0Mpa vapor cure 16-19h, are namely got the aerated bricks finished product.
Modification plant ash is plant ash to be admixed be equivalent to the even with dibutyl maleinate, 1.2% calcium lignin sulphonate agitating of powder weight 1.2%, and oven dry is ground into powder and obtains.
The performance data of processing the aerated bricks that obtains by above-described embodiment 1 is as follows: hole reaches 80%-85%, volume density 570～750kg/m
3, refractory temperature is 720 ℃, thermal conductivity is 0.11-0.16W/MK, suction lead wet slowly, absorbing water to saturated required time with volume is 6.2 times of clay brick.Ultimate compression strength is 5.1-7.2Mpa.
Claims (3)
1. the aerated bricks take slag as matrix is characterized in that the weight part of its constitutive material is: iron ore tailings 10-15, phosphorus ore slag 5-10, blast-furnace slag 10-20, alum ore deposit tailings 10-15, cement 5-8, kaolin 5-10, pearlstone 14-16, ceramic clay 4-5, aluminium powder 0.03-0.05, modification plant ash 5-10, oxidized paraffin wax soap 0.03-0.04, aluminium hydroxide 0.01-0.02, water glass 0.01-0.02 and micronized polyethylene alcohol 0.3-0.5.
2. the working method of the aerated bricks take slag as matrix as claimed in claim 1 is characterized in that may further comprise the steps:
(1) raw-material processing: starting material comprise iron ore tailings, phosphorus ore slag, blast-furnace slag, alum ore deposit tailings, cement, kaolin, pearlstone, ceramic clay and aluminium powder; Be crushed to fineness and reach the 180-200 order;
(2) stir: Xian Jiashui stirs separately, and then mix and blend also adds other surplus stocks in the raw material by weight;
(3) cast: the slurry that step (2) is stirred adds in the stock mould, obtains the brick idiosome;
(4) rest: the brick idiosome of step (3) is put into the chamber of resting, rest chamber sealing thermal insulation 40-45 ℃, rested time 1-3 hour;
(5) cutting: the brick idiosome that step (4) is rested is put into and is processed into certain desired size on the cutting machine;
(6) steam-cured: that the green compact of above-mentioned steps (5) at 0.8-1.0Mpa vapor cure 16-19h, are namely got the aerated bricks finished product.
3. the aerated bricks take slag as matrix according to claim 1, it is characterized in that: described modification plant ash is that plant ash is admixed the calcium lignin sulphonate agitating with dibutyl maleinate, 1-2% that is equivalent to powder weight 1-2% is even, oven dry is ground into powder and obtains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210320761.6A CN102992803B (en) | 2012-09-03 | 2012-09-03 | Air-added brick with slag as matrix and method for processing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210320761.6A CN102992803B (en) | 2012-09-03 | 2012-09-03 | Air-added brick with slag as matrix and method for processing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102992803A true CN102992803A (en) | 2013-03-27 |
| CN102992803B CN102992803B (en) | 2014-04-30 |
Family
ID=47921990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210320761.6A Expired - Fee Related CN102992803B (en) | 2012-09-03 | 2012-09-03 | Air-added brick with slag as matrix and method for processing same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102992803B (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103449769A (en) * | 2013-07-31 | 2013-12-18 | 潘逸东 | Antibacterial aerated brick |
| CN103449763A (en) * | 2013-07-31 | 2013-12-18 | 潘逸东 | Anti-crack aerated brick |
| CN103449764A (en) * | 2013-07-31 | 2013-12-18 | 潘逸东 | Heat-resistant aerated brick |
| CN103449771A (en) * | 2013-08-05 | 2013-12-18 | 潘逸东 | Waterproof aerated brick |
| CN103467006A (en) * | 2013-08-05 | 2013-12-25 | 安徽中龙建材科技有限公司 | Aerated concrete block with high thermal insulation property |
| CN103601443A (en) * | 2013-11-04 | 2014-02-26 | 沈礼群 | Slag wall brick and preparation method thereof |
| CN103880467A (en) * | 2014-02-11 | 2014-06-25 | 马鞍山豹龙新型建材有限公司 | Anti-crack aerated brick and preparation method thereof |
| CN103880468A (en) * | 2014-02-11 | 2014-06-25 | 马鞍山豹龙新型建材有限公司 | Sound-absorbing autoclaved aerated concrete block and manufacturing method thereof |
| CN104030615A (en) * | 2014-04-30 | 2014-09-10 | 枞阳县天筑新型建筑材料有限公司 | Heat-insulation heatproof concrete and preparation method thereof |
| CN104045272A (en) * | 2014-04-30 | 2014-09-17 | 枞阳县天筑新型建筑材料有限公司 | Fire-resistant high-strength concrete and preparation method |
| CN104556895A (en) * | 2014-12-19 | 2015-04-29 | 安徽中龙建材科技有限公司 | Aerated concrete block with low heat conductivity coefficient and preparation method thereof |
| CN104591619A (en) * | 2014-12-30 | 2015-05-06 | 青岛新华友建工集团股份有限公司 | Iron-mine tailing aerated concrete block and preparation method thereof |
| CN106278028A (en) * | 2016-08-10 | 2017-01-04 | 马鞍山市广立方彩砖有限公司 | A kind of building non-bearing aerated bricks of the iron mine tailings that adulterates |
| CN107879682A (en) * | 2017-11-27 | 2018-04-06 | 安徽省润乾节能建材科技股份有限公司 | A kind of aerated bricks and its processing method using slag as matrix |
| CN109279855A (en) * | 2018-12-19 | 2019-01-29 | 建德市东胜建材有限公司 | A kind of composite environmental-friendly brick and preparation method thereof |
| CN111732402A (en) * | 2020-07-16 | 2020-10-02 | 余庆县君余新型建材有限责任公司 | Waterproof and fireproof aerated brick and preparation method thereof |
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| WO2011020975A2 (en) * | 2009-08-21 | 2011-02-24 | Laboratoire Central Des Ponts Et Chaussees | Geopolymer cement and use thereof |
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| CN1644550A (en) * | 2004-12-15 | 2005-07-27 | 袁景华 | Polymer aluminium silicate cement and production thereof |
| CN101687703A (en) * | 2007-07-05 | 2010-03-31 | 美国石膏公司 | Lightweight cementitious compositions and building products and methods for making same |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103449763A (en) * | 2013-07-31 | 2013-12-18 | 潘逸东 | Anti-crack aerated brick |
| CN103449764A (en) * | 2013-07-31 | 2013-12-18 | 潘逸东 | Heat-resistant aerated brick |
| CN103449769A (en) * | 2013-07-31 | 2013-12-18 | 潘逸东 | Antibacterial aerated brick |
| CN103449771A (en) * | 2013-08-05 | 2013-12-18 | 潘逸东 | Waterproof aerated brick |
| CN103467006A (en) * | 2013-08-05 | 2013-12-25 | 安徽中龙建材科技有限公司 | Aerated concrete block with high thermal insulation property |
| CN103467006B (en) * | 2013-08-05 | 2015-12-23 | 安徽中龙建材科技有限公司 | A kind of high heat preservation performance air-entrained concrete building block |
| CN103601443B (en) * | 2013-11-04 | 2015-07-01 | 沈礼群 | Slag wall brick and preparation method thereof |
| CN103601443A (en) * | 2013-11-04 | 2014-02-26 | 沈礼群 | Slag wall brick and preparation method thereof |
| CN103880468B (en) * | 2014-02-11 | 2016-05-11 | 徐俊云 | A kind of sound-absorbing aerated bricks and preparation method thereof |
| CN103880468A (en) * | 2014-02-11 | 2014-06-25 | 马鞍山豹龙新型建材有限公司 | Sound-absorbing autoclaved aerated concrete block and manufacturing method thereof |
| CN103880467B (en) * | 2014-02-11 | 2016-03-16 | 合肥蓝科新材料有限公司 | A kind of cracking resistance aerated bricks and preparation method thereof |
| CN103880467A (en) * | 2014-02-11 | 2014-06-25 | 马鞍山豹龙新型建材有限公司 | Anti-crack aerated brick and preparation method thereof |
| CN104045272A (en) * | 2014-04-30 | 2014-09-17 | 枞阳县天筑新型建筑材料有限公司 | Fire-resistant high-strength concrete and preparation method |
| CN104030615A (en) * | 2014-04-30 | 2014-09-10 | 枞阳县天筑新型建筑材料有限公司 | Heat-insulation heatproof concrete and preparation method thereof |
| CN104556895A (en) * | 2014-12-19 | 2015-04-29 | 安徽中龙建材科技有限公司 | Aerated concrete block with low heat conductivity coefficient and preparation method thereof |
| CN104591619A (en) * | 2014-12-30 | 2015-05-06 | 青岛新华友建工集团股份有限公司 | Iron-mine tailing aerated concrete block and preparation method thereof |
| CN106278028A (en) * | 2016-08-10 | 2017-01-04 | 马鞍山市广立方彩砖有限公司 | A kind of building non-bearing aerated bricks of the iron mine tailings that adulterates |
| CN107879682A (en) * | 2017-11-27 | 2018-04-06 | 安徽省润乾节能建材科技股份有限公司 | A kind of aerated bricks and its processing method using slag as matrix |
| CN107879682B (en) * | 2017-11-27 | 2020-01-31 | 安徽省润乾节能建材科技股份有限公司 | aerated bricks with slag as matrix and processing method thereof |
| CN109279855A (en) * | 2018-12-19 | 2019-01-29 | 建德市东胜建材有限公司 | A kind of composite environmental-friendly brick and preparation method thereof |
| CN111732402A (en) * | 2020-07-16 | 2020-10-02 | 余庆县君余新型建材有限责任公司 | Waterproof and fireproof aerated brick and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102992803B (en) | 2014-04-30 |
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