WO2009119291A1 - 鉄鉱石ペレットの製造方法 - Google Patents
鉄鉱石ペレットの製造方法 Download PDFInfo
- Publication number
- WO2009119291A1 WO2009119291A1 PCT/JP2009/054431 JP2009054431W WO2009119291A1 WO 2009119291 A1 WO2009119291 A1 WO 2009119291A1 JP 2009054431 W JP2009054431 W JP 2009054431W WO 2009119291 A1 WO2009119291 A1 WO 2009119291A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water separation
- separation chamber
- chamber
- pellet
- kiln
- Prior art date
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
- C22B1/22—Sintering; Agglomerating in other sintering apparatus
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2413—Binding; Briquetting ; Granulating enduration of pellets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/2016—Arrangements of preheating devices for the charge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/38—Arrangements of cooling devices
Definitions
- the present invention relates to a technology for producing iron ore pellets by a grate kiln method for producing iron-ore pellets used for blast furnace raw materials and the like.
- the manufacturing process for producing iron ore pellets includes drying, water separation, preheating, firing and cooling.
- a great kiln type iron ore pellet manufacturing apparatus (hereinafter simply referred to as a “great kiln type calcining apparatus”) used for carrying out this manufacturing process, there is conventionally known one as shown in the longitudinal sectional view of FIG. .
- this great kiln-type firing apparatus includes a grate furnace 1, a rotary kiln (hereinafter also referred to simply as “kiln”) 9, and an annular cooler 11. Yes.
- the great furnace 1 is composed of an endless traveling grate (hereinafter referred to simply as “grate”) 2, raw pellets GP laid on the great 2, a drying chamber 3, a water separation chamber 4, a preheating chamber. While moving in the longitudinal direction of each chamber in the order of 5, the pellets (preheated pellets) are provided with strength enough to withstand rolling in the kiln 9 by drying, water separation, and preheating by downward ventilation of the heating gas.
- grate endless traveling grate
- the raw pellet GP is obtained by blending limestone, dolomite, and the like as auxiliary raw materials with iron ore as a main raw material, and adding water to granulate.
- raw pellets GP having a water content of about 8 to 9% by mass are dried at an atmospheric temperature of about 250 ° C.
- the dried raw pellets are heated to about 450 ° C. to decompose and remove mainly the crystal water (combined water) in the iron ore.
- the temperature of the pellet is raised to about 1100 ° C., the carbonate contained in limestone, dolomite, etc. is decomposed to remove CO 2 and magnetite in the iron ore is oxidized.
- the rotary kiln 9 is directly connected to the great furnace 1 and is a cylindrical rotary furnace with a gradient.
- the rotary kiln 9 burns the dried, dewatered and preheated pellets charged from the preheating chamber 5 of the great furnace 1 by combustion with the kiln burner 10 disposed on the outlet side, and is used for burning the pellets
- the produced high-temperature combustion exhaust gas is fed into the preheating chamber 5 as a heating gas.
- fuel such as pulverized coal and coke oven gas is blown into the rotary kiln 9 by the kiln burner 10 and burned together with combustion air.
- the preheating chamber 5 is provided with a preheating chamber burner 21 as a kiln combustion exhaust gas temperature raising means for raising the temperature of the kiln combustion exhaust gas from the rotary kiln 9.
- Coke-oven gas hereinafter abbreviated as “COG”
- COG Coke-oven gas
- pulverized coal are used as fuel for the preheating chamber burner 21.
- the strength of the preheated pellets (hereinafter referred to as “preheat pellets”) can be increased, and the kiln ring (kiln chunk; pelletized powder is kiln in the rotary kiln 9 that causes unstable operation).
- preheat pellets the kiln ring (kiln chunk; pelletized powder is kiln in the rotary kiln 9 that causes unstable operation).
- the generation of rocks on the inner wall brick surface is prevented (see Patent Documents 1 and 2).
- Reference numeral 16 denotes a wind chamber group for the water separation chamber.
- the space below Great 2 is partitioned into a plurality of rooms along the pellet movement direction, and these rooms are called wind boxes. That is, the water chamber box groups 16 are composed of a plurality of air boxes, and, for example, five air boxes are arranged in a row along the longitudinal direction (pellet movement direction) with respect to the water chamber 4. ing.
- Reference numeral 17 denotes a water separation chamber suction fan, which has a fan damper (not shown) for adjusting the suction air volume (downward ventilation volume). The suction fan 17 guides the preheating chamber exhaust gas A as a heating gas to the water separation chamber 4, sucks the heating gas A downward through the pellet layer on the great 2 and the wind box group 16, and enters the next drying chamber 3. Send it out.
- the control technology of the preheating chamber atmosphere temperature by installing the preheating chamber burner 21 is very effective in increasing the strength of the preheating pellet when the pellet production rate is constant and the content of crystal water in the raw pellet GP is also constant. Means.
- the powder generated by the bursting deteriorates the air permeability of the pellet layer, impairs uniform heating, increases the pressure loss of the pellet layer, destabilizes the operation, and decreases the strength of the preheated pellet.
- the powder generated in the preheating chamber 5 is brought into the kiln 9 and the preheated pellets having low strength are pulverized by rolling in the kiln 9, so that a kiln ring is formed and the operation cannot be continued. Therefore, in order to avoid the bursting in the preheating chamber 5, the pellet production rate has to be reduced eventually.
- the amount of fuel injected from the preheating chamber burner 21 into the preheating chamber 5 is increased, and the atmospheric gas temperature in the preheating chamber 5 is increased. It is conceivable that the residual amount of crystal water at the outlet of the water separation chamber 4 is reduced by raising the temperature of the preheating chamber exhaust gas A and raising the atmosphere temperature in the water separation chamber 4. However, due to the use of the preheating chamber burner 21, the temperature of the preheating chamber exhaust gas A has risen from the time when the preheating chamber burner 21 was not used. For this reason, it is difficult to further raise the temperature of the preheating chamber exhaust gas A due to the restriction of the heat resistance temperature of the metallic great 2.
- the drying chamber 3 does not sufficiently remove the adhering moisture from the raw pellet GP (especially the lower layer pellets) and enters the water separation chamber 4. There is a problem that the attached moisture is rapidly evaporated due to the atmospheric temperature in the water separation chamber 4 higher than before and the bursting is likely to occur.
- an object of this invention is to provide the pellet manufacturing method which can achieve reliably the pellet production increase or the high crystal water ore increase distribution.
- the present invention is a method for producing iron ore pellets of a great kiln method in which iron ore pellets are moved by a traveling great, heated sequentially in a drying chamber, a water separation chamber and a preheating chamber and then fired in a rotary kiln equipped with a kiln burner.
- a plurality of burners are installed between 1/3 and 0.98 times the total length of the water separation chamber with the inlet of the water separation chamber as a base point, and gaseous fuel is blown into the water separation chamber from the plurality of burners. Is burned with residual oxygen in the exhaust gas from the preheating chamber introduced into the water separation chamber, and the atmosphere temperature in the region other than the vicinity of the inlet in the water separation chamber is increased. is there.
- the direction in which the gaseous fuel is blown is substantially orthogonal to the direction in which the preheating chamber exhaust gas is introduced into the water separation chamber.
- the gaseous fuel is preferably coke oven gas, natural gas, petroleum gas, or a mixed gas of two or more thereof.
- the present invention by blowing gaseous fuel from a plurality of burners installed avoiding a predetermined section from the entrance to the water separation chamber, by raising only the ambient temperature behind the predetermined section of the water separation chamber, bursting can be prevented from occurring in the water separation chamber, and the crystal water is sufficiently decomposed and removed in the water separation chamber. It is now possible to prevent bursting from occurring.
- FIG. 1 It is a longitudinal cross-sectional view which shows an example of the great kiln system iron ore pellet manufacturing apparatus which concerns on implementation of this invention. It is a top view which shows the principal part of the great kiln system iron ore pellet manufacturing apparatus shown in FIG. It is a cross-sectional view for demonstrating the water separation chamber in FIG. It is a longitudinal cross-sectional view which shows the conventional great kiln system iron ore pellet manufacturing apparatus.
- FIG. 1 shows an example of a great kiln type iron ore pellet manufacturing apparatus according to an embodiment of the present invention. Since this iron ore pellet manufacturing apparatus is the same as the structure of the conventional apparatus shown in FIG. 4 except that a burner is added to the water separation chamber, the same parts as those in FIG. A description will be omitted, and different points will be described.
- a water burner (hereinafter referred to as “water separation chamber burner”) is injected into the water separation chamber 4, for example, COG as gaseous fuel into the water separation chamber 5. It is also referred to as “.”
- a plurality of 31 are provided. Gas fuel is used as fuel for the water separation chamber burner 31 instead of pulverized coal because the temperature of the preheating chamber exhaust gas A blown into the water separation chamber 4 is as low as about 400 to 450 ° C. Combustion does not continue without a source, whereas in the case of gaseous fuel, combustion continues automatically even without an ignition source.
- the burner frame becomes longer, so the pellet on the outermost surface of the pellet layer is overheated and bursting occurs. It becomes easy to do. From this point, it is preferable to use a gaseous fuel having a short burner frame.
- the plurality of burners 31 are disposed between (1/3) L and 0.98L (L: total length of the water separation chamber) starting from the water separation chamber inlet 4b. If the burner 31 is installed at a position lower than (1/3) L from the water separation chamber inlet 4b as a base point, the ambient temperature in the vicinity of the water separation chamber inlet wall b rises and the adhering water is not sufficiently dried in the drying chamber 3. This is because bursting is likely to occur when the pellets are brought into the water separation chamber 4 while remaining.
- the burner 21 when the burner 21 is installed at a position exceeding 0.98L with the water separation chamber inlet 4b as a base point (that is, a position less than 0.02L with the water separation chamber outlet 4c as a base point), the burner 21 approaches the partition wall of the water separation chamber outlet 4c. This is because the refractory material of the partition wall is easily damaged by the radiant heat from the burner frame.
- the plurality of burners 31 are preferably disposed between (1/2) L and 0.95L with the water separation chamber inlet 4b as a base point, and are disposed between (1/3) L and 0.92L. More preferably.
- the plurality of burners 31 are installed on the ceiling wall 4a of the water separation chamber 4, and the blowing direction of COG (gaseous fuel) (in this example, the downward vertical direction) is the water separation water.
- the heating gas into the chamber 4 preheating chamber exhaust gas
- the heating gas into the chamber 4 is introduced in a direction substantially orthogonal to the introduction direction (in this example, the horizontal direction).
- the plurality of burners 31 are preferably arranged, for example, with four in the width direction of the water separation chamber 4 and two in the longitudinal direction, for a total of eight arranged at predetermined intervals.
- the pellet production is increased or the high crystal water ore is distributed to the pellet.
- the crystallization water is sufficiently decomposed and removed from the pellet without generating bursting in the water separation chamber 4, and powder is brought into the preheating chamber 5, and bursting occurs in the preheating chamber 5. Is reliably prevented and the strength of the preheated pellets is increased. And even if this preheating pellet with high intensity
- COG is exemplified as the gaseous fuel, but natural gas (LNG), petroleum gas (LPG), or a mixture of two or more of these may be used in addition to COG.
- LNG natural gas
- LPG petroleum gas
- the introduction duct of the heating gas (preheating chamber exhaust gas) A to the water separation chamber 4 is the ceiling wall 4a. Is connected, i.e., when the introduction direction of the heating gas A is vertically downward, the blowing direction of the gaseous fuel is substantially horizontal direction substantially orthogonal to the introduction direction of the heating gas A, It is recommended to install the plurality of burners 31 on the side wall of the water separation chamber 4.
- an example in which a total of eight burners 31 are installed as four burners 31 in the width direction of the water separation chamber 4 and two in the longitudinal direction thereof is not limited to this.
- the size (width and length) of the water separation chamber 4, the installation cost of the water separation chamber burner 31, and the like can be changed as appropriate.
- a burner per 1 piece for blowing COG into the water separation chamber (width 4.7 m, length 15.25 m).
- operation was performed without changing the raw material composition of the pellets (that is, while maintaining the crystallization water content in the raw pellets constant), and the pellet production rates before and after the water separation chamber burner were installed were compared.
- the pellet production rate was 10,000 t / d at the maximum before installing the water separation chamber burner, but after the water separation chamber burner was installed, bursting was not generated in the preheating chamber, and the strength of the preheating pellet was maintained.
- the pellet production rate can be increased to 10650 t / d without generating a kiln ring, and it was confirmed that the production of pellets can be increased by 6.5% by applying the present invention.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
2…トラベリング・グレート
3…乾燥室
4…離水室
4a…離水室天井壁
4b…離水室入口
4c…離水室出口
5…予熱室
9…ロータリキルン
10…キルンバーナ
11…アニュラクーラ
16…離水室用風箱群
17…離水室用吸引ファン
21…予熱室バーナ
31…離水室バーナ
A…予熱室排ガス(加熱用ガス)
GP…生ペレット
図1は本発明の実施に係るグレートキルン方式鉄鉱石ペレット製造装置の一例を示す。この鉄鉱石ペレット製造装置において、離水室にバーナが追加されている点以外は、前記図4に示す従来装置の構成と同一であるので、同一部分には図4と同一の符号を付して説明を省略し、異なる点について説明する。
上記実施形態では、気体燃料としてCOGを例示したが、COGの他、天然ガス(LNG)、石油ガス(LPG)、または、これらの2種以上の混合ガスを用いてもよい。
Claims (3)
- 鉄鉱石ペレットをトラベリング・グレートで移動させつつ、乾燥室、離水室および予熱室で順次加熱した後、キルンバーナを備えたロータリキルンで焼成するグレートキルン方式の鉄鉱石ペレット製造方法において、
前記離水室の入口を基点として該離水室全長の1/3~0.98倍の間に複数本のバーナを設置し、該複数本のバーナから前記離水室へ気体燃料を吹き込み、該気体燃料を、前記離水室へ導入される予熱室排ガス中の残留酸素で燃焼させて、前記離水室内における、その入口近傍を除く領域の雰囲気温度を上昇させることを特徴とする鉄鉱石ペレットの製造方法。 - 前記気体燃料の吹込み方向が、前記離水室への前記予熱室排ガスの導入方向と略直交する請求項1に記載の鉄鉱石ペレットの製造方法。
- 前記気体燃料が、コークス炉ガス、天然ガス、石油ガス、または、これらの2種以上の混合ガスである請求項1または2に記載の鉄鉱石ペレットの製造方法。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200980103850.1A CN101932738B (zh) | 2008-03-27 | 2009-03-09 | 铁矿石球团的制造方法 |
BRPI0908190A BRPI0908190B1 (pt) | 2008-03-27 | 2009-03-09 | metodo para produção de pelota de minério de ferro |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008084178A JP4355748B2 (ja) | 2008-03-27 | 2008-03-27 | 鉄鉱石ペレットの製造方法 |
JP2008-084178 | 2008-03-27 |
Publications (1)
Publication Number | Publication Date |
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WO2009119291A1 true WO2009119291A1 (ja) | 2009-10-01 |
Family
ID=41113490
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2009/054431 WO2009119291A1 (ja) | 2008-03-27 | 2009-03-09 | 鉄鉱石ペレットの製造方法 |
Country Status (6)
Country | Link |
---|---|
JP (1) | JP4355748B2 (ja) |
CN (1) | CN101932738B (ja) |
BR (1) | BRPI0908190B1 (ja) |
RU (1) | RU2459878C2 (ja) |
UA (1) | UA94202C2 (ja) |
WO (1) | WO2009119291A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9863702B2 (en) * | 2015-10-27 | 2018-01-09 | Vale S.A. | Process for ore moisture reduction in conveyor belts and transfer chutes |
EP3461948A1 (en) * | 2017-09-27 | 2019-04-03 | Andritz Inc. | Process and system for reducing ringing in lime kilns |
WO2024047951A1 (ja) * | 2022-09-02 | 2024-03-07 | Jfeスチール株式会社 | 鉄鉱石ペレットの製造方法 |
Families Citing this family (8)
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---|---|---|---|---|
KR101514869B1 (ko) | 2009-10-09 | 2015-04-23 | 미쓰비시 마테리알 가부시키가이샤 | 도전성 도포막 형성제, 그 제조 방법 및 그것을 사용한 성형품 |
CN102175073B (zh) * | 2011-02-24 | 2012-08-08 | 中冶北方工程技术有限公司 | 球团用铁精矿干燥设备及干燥方法 |
KR101424913B1 (ko) | 2013-01-31 | 2014-08-01 | 현대제철 주식회사 | 철광석 펠렛 제조 모사장치 |
CN104748558B (zh) * | 2013-12-27 | 2017-01-18 | 中冶长天国际工程有限责任公司 | 一种还原窑尾煤预热装置 |
JP6367772B2 (ja) * | 2015-07-29 | 2018-08-01 | 株式会社神戸製鋼所 | 焼結ペレットの製造装置 |
JP6368693B2 (ja) * | 2015-07-29 | 2018-08-01 | 株式会社神戸製鋼所 | 焼結ペレットの製造装置 |
CN110487065B (zh) * | 2019-09-26 | 2024-06-11 | 中冶北方(大连)工程技术有限公司 | 链箅机预热二段热风供给系统及温度调节方法 |
WO2023035050A1 (pt) | 2021-09-09 | 2023-03-16 | Fct Holdings Pty Ltd | QUEIMADOR DE BAIXA EMISSÃO DE NOx E MÉTODO OPERACIONAL PARA REDUÇÃO DE FORMAÇÃO DE NOx APLICADO EM PROCESSO DE SINTERIZAÇÃO E/OU ENDURECIMENTO DE PELOTAS DE MINÉRIO DE FERRO |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52156104A (en) * | 1976-06-22 | 1977-12-26 | Kobe Steel Ltd | Production of pellets |
JPH11325740A (ja) * | 1998-05-08 | 1999-11-26 | Kobe Steel Ltd | グレートキルン方式鉄鉱石ペレット焼成装置 |
JPH11337264A (ja) * | 1998-05-27 | 1999-12-10 | Daido Steel Co Ltd | 回転炉床炉 |
JP2005060762A (ja) * | 2003-08-11 | 2005-03-10 | Kobe Steel Ltd | 鉄鉱石ペレットの製造方法および製造装置 |
JP2006118015A (ja) * | 2004-10-22 | 2006-05-11 | Kobe Steel Ltd | ペレタイジング炉用バーナの構造 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA977974A (en) * | 1972-10-04 | 1975-11-18 | Robert F. Cnare | Process for heat treating magnetite with heat recuperation from cooling final product |
SU1617291A1 (ru) * | 1988-04-19 | 1990-12-30 | Государственный Всесоюзный Научно-Исследовательский Институт Цементной Промышленности | Устройство дл термообработки материалов |
CN1621541A (zh) * | 2004-12-14 | 2005-06-01 | 白俊卿 | 一种高品位铁矿石直接干法制备球团矿的方法 |
-
2008
- 2008-03-27 JP JP2008084178A patent/JP4355748B2/ja not_active Expired - Fee Related
-
2009
- 2009-03-09 RU RU2010143867/02A patent/RU2459878C2/ru not_active IP Right Cessation
- 2009-03-09 CN CN200980103850.1A patent/CN101932738B/zh not_active Expired - Fee Related
- 2009-03-09 BR BRPI0908190A patent/BRPI0908190B1/pt not_active IP Right Cessation
- 2009-03-09 WO PCT/JP2009/054431 patent/WO2009119291A1/ja active Application Filing
- 2009-03-09 UA UAA201012709A patent/UA94202C2/ru unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52156104A (en) * | 1976-06-22 | 1977-12-26 | Kobe Steel Ltd | Production of pellets |
JPH11325740A (ja) * | 1998-05-08 | 1999-11-26 | Kobe Steel Ltd | グレートキルン方式鉄鉱石ペレット焼成装置 |
JPH11337264A (ja) * | 1998-05-27 | 1999-12-10 | Daido Steel Co Ltd | 回転炉床炉 |
JP2005060762A (ja) * | 2003-08-11 | 2005-03-10 | Kobe Steel Ltd | 鉄鉱石ペレットの製造方法および製造装置 |
JP2006118015A (ja) * | 2004-10-22 | 2006-05-11 | Kobe Steel Ltd | ペレタイジング炉用バーナの構造 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9863702B2 (en) * | 2015-10-27 | 2018-01-09 | Vale S.A. | Process for ore moisture reduction in conveyor belts and transfer chutes |
EP3461948A1 (en) * | 2017-09-27 | 2019-04-03 | Andritz Inc. | Process and system for reducing ringing in lime kilns |
US10995991B2 (en) | 2017-09-27 | 2021-05-04 | Andritz Inc. | Process for reducing ringing in lime kilns |
WO2024047951A1 (ja) * | 2022-09-02 | 2024-03-07 | Jfeスチール株式会社 | 鉄鉱石ペレットの製造方法 |
Also Published As
Publication number | Publication date |
---|---|
BRPI0908190A2 (pt) | 2015-08-25 |
BRPI0908190B1 (pt) | 2017-05-30 |
UA94202C2 (ru) | 2011-04-11 |
RU2010143867A (ru) | 2012-05-10 |
CN101932738A (zh) | 2010-12-29 |
CN101932738B (zh) | 2012-10-10 |
JP2009235507A (ja) | 2009-10-15 |
JP4355748B2 (ja) | 2009-11-04 |
RU2459878C2 (ru) | 2012-08-27 |
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