CN1560553A - Cooling machine high-temp fixed bed anti-stack device for industrial furnace - Google Patents
Cooling machine high-temp fixed bed anti-stack device for industrial furnace Download PDFInfo
- Publication number
- CN1560553A CN1560553A CNA2004100141557A CN200410014155A CN1560553A CN 1560553 A CN1560553 A CN 1560553A CN A2004100141557 A CNA2004100141557 A CN A2004100141557A CN 200410014155 A CN200410014155 A CN 200410014155A CN 1560553 A CN1560553 A CN 1560553A
- Authority
- CN
- China
- Prior art keywords
- bed
- high temperature
- grate
- piling apparatus
- fixed
- 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
Images
Landscapes
- Furnace Details (AREA)
Abstract
The invention relates to a cooling device for block or particle type material baked in the industrial oven continuously. It includes wall, cooler grate bed, cooling air pipe, cooling air adjusting valve, wind supplying chamber on the movable bed and high temperature grate bed accumulation resisting device, the cooler grate bed is made up of fixed grate bed and movable grate bed, the fixed grate bed is arranged below the material aperture of the industrial oven, the fixed grate bed leans from up down and forma an angle alpha with the movable grate bed, the high temperature grate bed accumulation resisting device is arranged above the fixed grate bed. The advantages of the invention are avoiding the high temperature material from being blocked or pilled on the fixed bed effectively, the material on the fixed bed is more even.
Description
Relate to the field
What the present invention relates to is a kind of high temperature bulk of continuous cooling process Industrial Stoves (as cement rotary kiln) sintering or the cooling device of granular material, is in particular the anti-piling apparatus of a kind of industrial kiln cooler high temperature fixed bed.
Background technology
Grate plate or the grate of tradition cooler have three kinds of effects, namely support material, the convey materials that will cool off, refrigerating gas is assigned in the material bed.This cooler is at hot junction first row or second row installing movable grate plate, because this place's temperature of charge is higher, the grate plate working environment is unusually abominable, and the possibility that grate plate is worn and torn, burnt out is very big.A kind of cooler of modified form is to adopt the fixed bed that tilts to replace original pulldown bed in high temperature section, can prolong the life-span of high temperature section grate plate so greatly, avoid also that fixed draught tube is leaked out with the movably connecting pipe that the activity grate plate is connected, easy to wear, shortcoming that resistance is big.But owing to adopted fixedly grate, in going out the sintering feed of high temperature kiln (such as grog), contain certain liquid phase, and temperature is too high, namely forms easily agglomerate, form so-called " egg ", or be piled into the hill shape, form so-called " snowman ", in actual production, in case tie " egg " or "snowman" formation accident, often need to stop to produce to process, this not only causes production loss, and affects equipment service life (as shortening the life-span of refractory brick or castable).In addition because the material charge level on the fixed bed is not very stable, it often is subjected to the influence of material movement state, material characteristic, cooler operating parameter, particularly usually thicker than the discharge end of close fixed bed near hot junction first row or the second discharge layer thickness, and material particular diameter is also different on the cooler width, therefore the flowing resistance on whole fixed bed is different, even adopted inflation beam technology also to keep away unavoidable refrigerating gas, thereby caused the fixed bed cooling effect bad by the uneven phenomenon of material bed.
Summary of the invention
A kind of cooling device that the objective of the invention is for overcoming problem that above-mentioned tradition or modified form cooler occur or shortcoming and providing is the anti-piling apparatus of industrial kiln cooler high temperature fixed bed.
Purpose of the present invention realizes by following technical solution:
A kind of cooler high-temperature fixed-bed stacking-proofing device for industrial kiln, it comprises the Industrial Stoves cooling device, it comprises air feed air compartment and the anti-piling apparatus of high temperature grate on wall, cooler grate, cooling air pipe, refrigerating gas control valve, the pulldown bed, the high temperature grate is prevented piling apparatus, its in the cooler grate by fixedly grate and movable grate form, fixedly grate is located at the below of the discharging opening of industry kiln, fixedly grate tilt from top to bottom and movable grate between shape α in an angle, the anti-piling apparatus of high temperature grate is located at the fixedly grate top of inclination.
Purpose of the present invention also can further realize by following technical solution:
Aforesaid a kind of industrial kiln cooler high temperature fixed bed is prevented piling apparatus, and wherein said fixed bed grate plate is 3～25 ° angle from the horizontal by inclination alpha.
Aforesaid a kind of cooler high-temperature fixed-bed stacking-proofing device for industrial kiln wherein saidly arranges at least one and can move back and forth, vibrates, rotates or swing and the anti-piling apparatus of high temperature grate of the combination of the arbitrary forms of motion in them above the fixed bed grate plate.
Aforesaid a kind of cooler high-temperature fixed-bed stacking-proofing device for industrial kiln, the anti-piling apparatus of wherein said high temperature grate is solid or hollow body.When the anti-piling apparatus of high temperature comb bed is hollow body, on device, have hole or the seam that some supply cold winds pass through,
Aforesaid a kind of cooler high-temperature fixed-bed stacking-proofing device for industrial kiln, the cross sectional shape of the anti-piling apparatus of wherein said high temperature grate is circle or ellipse or polygon.
Aforesaid a kind of industrial kiln cooler high temperature fixed bed is prevented piling apparatus, the fixed or movable dismountable parts (as scraper) that are provided with on the anti-piling apparatus of wherein said high temperature comb bed.
The invention has the advantages that on traditional cooler with fixed bed, the anti-piling apparatus of high temperature grate of the present invention is set, can effectively avoid high-temperature material tilt or the fixed bed of level on " caking " or " making a snowman ", the material on the fixed bed is distributed more equably, this not only can reduce the apparatus and process accident, improve running rate, can also improve the cooling effectiveness of fixed bed, reduce cooling power consumption.The shape that the high temperature that adopts for the cooler anti-piling apparatus of bed of combing, its cross sectional shape can be triangle, circle, ellipse, polygon or other irregular curve surrounded.No matter adopt the anti-piling apparatus of which kind of cross sectional shape, can be designed to hollow or solid.When adopting hollow design, its inside can be used as the air channel of ventilation, hole or seam are offered in some position at push rod, refrigerating gas is ejected in the clinker bed by its air channel, center and hole or seam above it, this refrigerating gas cools off anti-piling apparatus on the one hand, avoid anti-piling apparatus high temperature deformation, can also grog be cooled off by the gas that sprays, improve the whole cooling effectiveness of cooler.
Purpose of the present invention, advantage and characteristics will be for illustration and explanation by the non-limitative illustration of following preferential embodiment, and these embodiment only provide as an example with reference to accompanying drawing.
Description of drawings
The reciprocating anti-windrow device that Fig. 1 installs on the fixed bed for the present invention tilts is implemented legend;
Fig. 2 is the enforcement legend of black triangle for the cross section of high temperature grate thrust unit of the present invention;
Fig. 3 implements legend for the triangular arrangement that the present invention wears some holes or seam against the material movement direction device;
Fig. 4 is the enforcement legend of the anti-piling apparatus of high temperature grate of solid circles for cross section of the present invention;
Fig. 5 is tubulose and with the enforcement legend of some holes or seam for the anti-piling apparatus cross section of high temperature grate of the present invention;
Fig. 6 is erose enforcement legend for the anti-piling apparatus cross section of high temperature grate of the present invention;
The anti-piling apparatus of the high temperature grate that Fig. 7 installs on the fixed bed for the present invention the tilts enforcement legend that rotates;
The anti-piling apparatus of the high temperature grate that Fig. 8 installs on the fixed bed for the present invention tilts is done vibration and is implemented legend;
The high temperature that Fig. 9 installs on the fixed bed for the present invention the tilts anti-piling apparatus of bed of combing is made the enforcement legend of swing;
The specific embodiment
As Fig. 1-shown in Figure 9, what the present invention relates to a kind ofly can eliminate the device that continuous cooling " makes a snowman " through the high temperature bulk or the granular material of Industrial Stoves 10 (as cement rotary kiln) sintering, and it comprises fixedly grate plate 8 on wall 11, high temperature fixed bed grate plate 4, cooling air pipe 6, refrigerating gas control valve 5, the pulldown bed and activity grate plate 7, air feed air compartment 9.The anti-piling apparatus 3 of at least one high temperature grate that can move back and forth and/or vibrate and/or rotate and/or swing is set above fixed bed grate plate 4 at least, and the anti-piling apparatus 3 of this high temperature grate helps motion and the cooling of material.Though traditional cooler fixed bed grate plate also have material that support will cool off, with refrigerating gas be assigned in the material bed, three kinds of effects of convey materials, but because fixed bed grate plate inertia, only depend on the fixed bed inclined design to make material movement, but the motion of this material is unreliable, often be subjected to the puzzlement of knot " egg ", " making a snowman ", material bed uneven thickness, the present invention adopts the anti-piling apparatus 3 of reciprocating high temperature comb bed to eliminate high temperature section high-temperature materials and " makes a snowman ", and controls the motion of material 2 on the fixed bed.Because the material movement on the fixed bed is controlled by the anti-piling apparatus 3 of the high temperature grate that helps material movement, so fixed bed and horizontal plane angle α can be any one angle in 3～25 ° of scopes.When fixed bed and horizontal plane angle α were smaller, the motion frequency of the anti-piling apparatus 3 of high temperature grate was larger; When fixed bed and horizontal plane angle α were bigger, the motion frequency of device 3 was smaller.When device 3 timess of exercise were few, the life-span of the anti-piling apparatus 3 of high temperature grate had also obtained prolongation.
The anti-piling apparatus 3 of the high temperature grate that the present invention adopts can be reciprocating on the grate that tilts fixedly, its cross sectional shape can be triangle, the angle of triangle base and horizontal plane is less than or equal to the angle α (3～25 °) of fixed bed grate plate 4 and horizontal plane, can be less than or greater than or equal in face of the device surface of material movement direction and the angle γ of device bottom surface with device bottom surface angle β against material movement direction device face.This design can guarantee that the anti-piling apparatus 3 of high temperature comb bed is when moving back and forth, push high-temperature material to the cooler discharging opening, grog moves towards Way out, accidents such as grog " makes a snowman " have been avoided on fixed bed, also the even distribution of the bed of material is played an important role simultaneously, improved the cooling effectiveness of cooler, and guaranteed that " making a snowman " do not appear in material on fixed bed top.Can open some holes or bar shaped seam on some of the anti-piling apparatus 3 of high temperature grate or two faces or three faces, device inside can pass into refrigerating gas, and refrigerating gas is injected in the high-temperature material by the hole on the device surface or seam.The purpose of device internal ventilation is that the anti-piling apparatus 3 of high temperature grate is cooled off on the one hand, reduce the wearing and tearing of the anti-piling apparatus 3 of high temperature grate, prolonging the life-span of the anti-piling apparatus 3 of high temperature grate, is to the high-temperature material cooling of further ventilating on the other hand, guarantees its cooling effect.The cross sectional shape of the anti-piling apparatus 3 of high temperature grate also can be circle or ellipse or polygon or other irregular curve shape.The anti-piling apparatus of high temperature comb bed 3 inside of any cross sectional shape can be made hollow or solid, when the high temperature anti-piling apparatus 3 of bed of combing is made when hollow, its inside can lead to refrigerating gas, it not only has cooling effect to the anti-piling apparatus 3 of high temperature comb bed, also high temperature chamotte had the quenching effect, and the material on the fixing bed of combing that tilts can be more evenly distributed, more help the cooling of material.The present invention also can prevent the fixed or movable scraper that is provided with on the piling apparatus in the high temperature grate, better promotes material, and simultaneously movable removable scraper also carries out easily daily maintenance and changes.
The anti-piling apparatus 3 of the high temperature grate that the present invention adopts can also vibrate in the grate that tilts fixedly, vibration by the anti-piling apparatus 3 of high temperature grate, destroyed material shape in heaps or " snowman " shape on the fixing grate, this high temperature grate prevent the shape of piling apparatus 3 can make bar-shaped or strip or other irregularly shaped.
The anti-piling apparatus 3 of the high temperature grate that the present invention adopts can also rotate around self axis in the grate that tilts fixedly, by the rotation of the anti-piling apparatus 3 of high temperature grate, destroyed fixedly material shape in heaps or " snowman " shape on the grate of inclination.
The anti-piling apparatus 3 of the high temperature grate that the present invention adopts can also be in the grate that tilts fixedly around self axis or common axis swing, by the swing of the anti-piling apparatus 3 of high temperature grate, has destroyed fixedly material shape in heaps or " snowman " shape on the grate of inclination.
Fig. 2 is that device 3 adopts a kind of enforcement legend of triangular-section, and in this scheme, its bottom surface and horizontal plane angle are , and its numerical value can be less than or equal to the angle α (general α is 3～25 °) of inclination fixed bed grate plate 4 and horizontal plane.Can be less than or greater than or equal in face of the device surface of material movement direction and the angle γ of device bottom surface with device bottom surface angle β against material movement direction device face in the anti-piling apparatus 3 of triangle high temperature grate.Device 3 can be solid or hollow (seeing Fig. 3), and when device 3 when be hollow, it has at least opens some holes or stitch 1 on the face, and its inner refrigerating gas that leads to, in order to cooling device 3 and high temperature chamotte.
Fig. 4 adopts one of the solid circles cross section to implement legend for the anti-piling apparatus 3 of high temperature grate, and in this scheme, the anti-piling apparatus 3 of high temperature grate is installed on the inclination fixed bed 4 reciprocating.The anti-piling apparatus 3 of high temperature grate can be made hollow circular cross-sectional (seeing Fig. 5), hollow design can be adopted in inside, and the hole is set or stitches 1 at some position, cooling-air is injected in the clinker bed by the inner air channel of circular device and by the hole on it or seam.
Fig. 6 is the anti-piling apparatus 3 of the high temperature grate in solid irregularly shaped cross section, is installed on the inclination fixed bed 4 reciprocating.The anti-piling apparatus 3 of high temperature grate also can be made hollow, at some position some holes or seam is set, and cooling-air is injected on the grog material bed by its hole or seam by inner air channel.
Fig. 7 is that the high temperature in the solid irregularly shaped cross section that the rotates anti-piling apparatus 3 of bed of combing is implemented legends, and be installed on the inclination fixed bed 4, rotation by the anti-piling apparatus 3 of high temperature comb bed can destroy material and pile up or " making a snowman " on inclination fixed bed 4, helps material movement.
Fig. 8 implements legend for the anti-piling apparatus 3 of high temperature comb bed in the solid irregularly shaped cross section of do vibration, and be installed on the inclination fixed bed 4, vibration by the anti-piling apparatus 3 of high temperature comb bed can destroy material and pile up or " making a snowman " on inclination fixed bed 4, helps material movement.The anti-piling apparatus 3 of this high temperature grate can also be made hollow, and at some position some holes or seam is set, and cooling-air is injected on the grog material bed by its hole or seam by inner air channel.
Fig. 9 implements legend for the anti-piling apparatus 3 of high temperature comb bed in the solid irregularly shaped cross section of do swing, and be installed on the inclination fixed bed 4, swing by the anti-piling apparatus 3 of high temperature comb bed can destroy material and pile up or " making a snowman " on inclination fixed bed 4, helps material movement.The anti-piling apparatus 3 of this high temperature grate can also be made hollow, and at some position some holes or seam is set, and cooling-air is injected on the grog material bed by its hole or seam by inner air channel.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of requirement of the present invention.
Claims (7)
1. an industrial kiln cooler high temperature fixed bed is prevented piling apparatus, it comprises the Industrial Stoves cooling device, it comprises wall, cooler comb bed, cooling air pipe, the refrigerating gas control valve, air feed air compartment on the pulldown bed and the anti-piling apparatus of high temperature comb bed, the anti-piling apparatus of high temperature comb bed, it is characterized in that the cooler bed of combing is made up of fixing bed and the movable grate of combing, the fixing bed of combing is located at the below of the discharging opening of industry kiln, the fixing bed of combing tilt from top to bottom and movable grate between shape α in an angle, the high temperature anti-piling apparatus of bed of combing is located at above fixing the combs bed of inclination.
2. a kind of industrial kiln cooler high temperature fixed bed according to claim 1 is prevented piling apparatus, it is characterized in that the fixed bed grate plate is 3～25 ° angle from the horizontal by inclination alpha.
3. a kind of cooler high-temperature fixed-bed stacking-proofing device for industrial kiln according to claim 1 is characterized in that arranging at least one and can move back and forth, vibrates, rotates or swing and the anti-piling apparatus of high temperature grate of the arbitrary forms of motion combination in them above the fixed bed grate plate.
4. a kind of cooler high-temperature fixed-bed stacking-proofing device for industrial kiln according to claim 1, it is characterized in that the anti-piling apparatus of described high temperature grate is solid or hollow body, when the anti-piling apparatus of high temperature grate is hollow body, have hole or the seam that some supply cold winds pass through at the anti-piling apparatus of high temperature grate.
5. a kind of cooler high-temperature fixed-bed stacking-proofing device for industrial kiln according to claim 4 is characterized in that the cross sectional shape of the anti-piling apparatus of high temperature grate is circle or ellipse or polygon.
6. a kind of industrial kiln cooler high temperature fixed bed according to claim 1 is prevented piling apparatus, it is characterized in that described high temperature is combed fixed or movablely on the anti-piling apparatus of bed to be provided with dismountable propelling piece.
7. a kind of industrial kiln cooler high temperature fixed bed according to claim 6 is prevented piling apparatus, and it is characterized in that combing described high temperature, fixed or movable on the anti-piling apparatus of bed to be provided with dismountable propelling piece be scraper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100141557A CN100430680C (en) | 2004-02-25 | 2004-02-25 | Cooling machine high-temp fixed bed anti-stack device for industrial furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100141557A CN100430680C (en) | 2004-02-25 | 2004-02-25 | Cooling machine high-temp fixed bed anti-stack device for industrial furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1560553A true CN1560553A (en) | 2005-01-05 |
| CN100430680C CN100430680C (en) | 2008-11-05 |
Family
ID=34440225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100141557A Expired - Fee Related CN100430680C (en) | 2004-02-25 | 2004-02-25 | Cooling machine high-temp fixed bed anti-stack device for industrial furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100430680C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011035509A1 (en) * | 2009-09-28 | 2011-03-31 | Gao Yuzong | Cooling machine |
| CN105300116A (en) * | 2014-07-15 | 2016-02-03 | 查道球 | Movable type efficient cooling module for clinker cooler high-temperature segment |
| CN107560427A (en) * | 2016-07-01 | 2018-01-09 | 南京凯盛国际工程有限公司 | A kind of cement clinker cooler blanking end structure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101498440B (en) * | 2009-02-16 | 2011-02-16 | 中煤能源黑龙江煤化工有限公司 | Ash cooling machine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK154692D0 (en) * | 1992-12-23 | 1992-12-23 | Smidth & Co As F L | PROCEDURE AND COOLER FOR COOLING PARTICULATED MATERIAL |
| ZA982104B (en) * | 1997-04-22 | 1998-09-16 | Smidth & Co As F L | Cooler for cooling of particulate material |
| DE19954683A1 (en) * | 1999-11-13 | 2001-05-17 | Kloeckner Humboldt Wedag | Grate cooler has above cool grate, tubular shafts spaced apart and transverse to cold goods' transport direction with distributed projecting cams around periphery |
| DE10015054A1 (en) * | 2000-03-25 | 2001-09-27 | Kloeckner Humboldt Wedag | Grate cooler |
| DE10017324A1 (en) * | 2000-04-10 | 2001-10-18 | Bmh Claudius Peters Gmbh | Method and device for transporting cement clinker |
| CN2556581Y (en) * | 2002-07-04 | 2003-06-18 | 沈阳水泥机械有限公司 | Cooling machine for cement industry |
| CN2708214Y (en) * | 2004-02-25 | 2005-07-06 | 南京凯盛水泥技术工程有限公司 | Cooler high-temperature fixed-bed stacking-proofing device for industrial kiln |
-
2004
- 2004-02-25 CN CNB2004100141557A patent/CN100430680C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011035509A1 (en) * | 2009-09-28 | 2011-03-31 | Gao Yuzong | Cooling machine |
| CN105300116A (en) * | 2014-07-15 | 2016-02-03 | 查道球 | Movable type efficient cooling module for clinker cooler high-temperature segment |
| CN107560427A (en) * | 2016-07-01 | 2018-01-09 | 南京凯盛国际工程有限公司 | A kind of cement clinker cooler blanking end structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100430680C (en) | 2008-11-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1560553A (en) | Cooling machine high-temp fixed bed anti-stack device for industrial furnace | |
| CN1093843C (en) | Burned lump cooling apparatus | |
| CN2708214Y (en) | Cooler high-temperature fixed-bed stacking-proofing device for industrial kiln | |
| JP5034189B2 (en) | Raw material charging method to blast furnace | |
| CN1977136A (en) | Method and cooler for cooling hot particulate material | |
| JP2004107794A (en) | Method for charging raw material into bell-less blast furnace | |
| WO2006119768A1 (en) | Method and apparatus for treating a bed of particulate material | |
| US6790255B2 (en) | Moving-hearth heating furnace and method for making reduced metal agglomerates | |
| EP0209368B1 (en) | Apparatus for cooling high-temperature particles | |
| CN200949991Y (en) | Novel crash and discharge screen of shaft kiln | |
| CN104496208B (en) | A kind of burning girder for limekiln with air-cooling apparatus | |
| KR100931177B1 (en) | Airflow Balancing Control Device in Sintered Filling Layer | |
| JP4757960B2 (en) | Blast furnace morning glory structure and design method thereof | |
| KR100393758B1 (en) | Control method for sectional classified by burden material of blast furnace | |
| JP2001019502A (en) | Clinker cooling device and parts therefor | |
| JP2003034814A (en) | Method of leveling agglomerated products in manufacturing metal iron | |
| CN104556746B (en) | A kind of T-shaped combusting beam for limekiln | |
| JPH02263935A (en) | Method for controlling air permeability in sintering raw material layer | |
| JP2002363623A (en) | Structure of distributing chute in bell-less type furnace top-charging apparatus for blast furnace | |
| JP2004204322A (en) | Method for charging raw material for blast furnace | |
| JP2004052038A (en) | Apparatus for forming inner wall of lower part of shaft kiln | |
| JP2847995B2 (en) | Raw material charging method for bellless blast furnace | |
| JP3869745B2 (en) | Surface melting furnace | |
| JP2007270170A (en) | Sinter cake-supporting stand | |
| KR100584740B1 (en) | Apparatus for controlling the supply of direct reduction iron to a melting furnace |
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 | ||
| C56 | Change in the name or address of the patentee |
Owner name: NANJING KISEN INTERNATIONAL ENGINEERING CO., LTD. Free format text: FORMER NAME: NANJING KAISHENG CEMENT TECHNOLOGY ENGINEERING CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 210036 No. 303 Hanzhoung Avenue, Nanjing, Jiangsu Patentee after: Nanjing Kisen International Engineering Co., Ltd. Address before: 10, building 280, Pearl River building, Zhujianglu Road, Jiangsu, Nanjing 210018, China Patentee before: Nanjing Kaisheng Cement Technology Engineering Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081105 Termination date: 20170225 |