CN202465742U - Cavity type blast furnace ironmaking device - Google Patents
Cavity type blast furnace ironmaking device Download PDFInfo
- Publication number
- CN202465742U CN202465742U CN2012200282911U CN201220028291U CN202465742U CN 202465742 U CN202465742 U CN 202465742U CN 2012200282911 U CN2012200282911 U CN 2012200282911U CN 201220028291 U CN201220028291 U CN 201220028291U CN 202465742 U CN202465742 U CN 202465742U
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- cavate
- shaft
- iron
- blast furnace
- cavity
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 126
- 229910052742 iron Inorganic materials 0.000 claims abstract description 63
- 239000002893 slag Substances 0.000 claims abstract description 33
- 239000000446 fuel Substances 0.000 claims abstract description 26
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000001301 oxygen Substances 0.000 claims abstract description 17
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 17
- 238000005507 spraying Methods 0.000 claims abstract description 12
- 230000004907 flux Effects 0.000 claims abstract description 9
- 239000000295 fuel oil Substances 0.000 claims description 29
- 239000004576 sand Substances 0.000 claims description 23
- 239000000779 smoke Substances 0.000 claims description 7
- 239000003245 coal Substances 0.000 claims description 4
- -1 flux Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 16
- 239000007921 spray Substances 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 13
- 238000007599 discharging Methods 0.000 abstract description 2
- 238000003723 Smelting Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 7
- 238000005265 energy consumption Methods 0.000 description 7
- 238000005245 sintering Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000006722 reduction reaction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The utility model discloses a cavity type blast furnace ironmaking device comprising a cavity type furnace body, a horizontal type furnace bottom, a furnace burden spray nozzle, first fuel spray nozzles and second fuel spray nozzles, wherein a furnace body hollow cavity is arranged in the cavity type furnace body; the horizontal type furnace bottom is provided with an inner cavity; the inner cavity comprises an furnace bosh and a furnace hearth; the lower end of the cavity type furnace body is connected with the top of the horizontal type furnace bottom; the wall of the furnace hearth is provided with a slag outlet and an iron outlet; the furnace burden spray nozzle is arranged on the top of the cavity type furnace body; the first fuel spray nozzles are arranged on the cavity type furnace body; and the second fuel spray nozzles are arranged on the wall of the furnace bosh. With the adoption of the cavity type blast furnace ironmaking device, ironsand does not need to be sintered and pelletized, so that the process flow is short, and the cost is low. An ironmaking method comprises the following steps of: spraying the farinose ironsand and flux into the furnace body hollow cavity from the top of the cavity type furnace body; respectively spraying fuel and oxygen into the furnace body hollow cavity and the furnace bosh by the first fuel spray nozzles and the second fuel spray nozzles; and discharging furnace slag and molten iron. The method for ironmaking is short in process flow, simple and practicable, and low in cost.
Description
Technical field
The utility model belongs to technical field of ferrous metallurgy, especially relates to a kind of cavate blast furnace ironmaking device.
Background technology
Traditionally, blast furnace is the most frequently used ironmaking equipment, and traditional blast furnace normally xsect is circular shaft furnace, and is highly very big, complex structure, and the construction difficulty is big, and cost is high.Utilize traditional blast furnace ironmaking, iron sand at first need be made ball and sintering, join in the stove from Top of BF then, so long flow path, energy consumption is high, and cost is high.
The utility model content
The utility model is intended to one of solve the problems of the technologies described above at least.For this reason, a purpose of the utility model is to propose a kind of cavate blast furnace ironmaking device, utilizes this iron-smelting device ironmaking; Iron sand need not sintering and makes ball; Technical process is short, and energy consumption is low, and operable fuel is extensive; Cost and cost are low, and therefore the cavate iron-smelting device according to the utility model embodiment also can be called the cavate blast furnace.
Cavate blast furnace ironmaking device according to the utility model comprises: cavate shaft, said cavate shaft have in predetermined height and the said cavate shaft and have the shaft cavity; At the bottom of the horizontalchamber oven; Has inner chamber at the bottom of the said horizontalchamber oven; Said inner chamber is divided into bosh and the cupola well that is positioned at below the said bosh; The lower end of said cavate shaft links to each other so that said shaft cavity is communicated with said bosh with top at the bottom of the said horizontalchamber oven, and the roof of said bosh is provided with and the lower end of the said cavate shaft smoke outlet of spaced apart predetermined distance in the horizontal direction, and the wall of said cupola well is provided with slag notch and iron notch; Be used for spraying in said shaft cavity from the top of said cavate shaft the furnace charge nozzle of pulverous iron sand and flux or pulverous iron sand, flux, fuel and oxygen, said furnace charge nozzle is located at the top of said cavate shaft; Be used in said shaft cavity, spraying into first fuel oil atomizer of fuel and oxygen, said first fuel oil atomizer is located on the said cavate shaft; With second fuel oil atomizer that is used in said bosh, spraying into fuel and oxygen, said second fuel oil atomizer is located on the wall of said bosh.
According to the cavate blast furnace ironmaking device of the utility model, at the bottom of shaft and horizontalchamber oven, effectively reduced cavate blast furnace ironmaking height of devices with cavity; Not only simple in structure, make things convenient for processing and manufacturing simultaneously, reduced manufacturing cost; And when utilizing this cavate blast furnace ironmaking device ironmaking, iron sand need not sintering and makes ball, and technical process is short; Energy consumption is low, and operable fuel is extensive, thereby effectively reduces smelting cost; Can also reduce discharge of harmful gases when smelting iron according to the cavate blast furnace ironmaking device of the utility model in addition, be beneficial to environmental protection, thereby further improved practicality.
Preferably; Said cupola well is divided into the iron pelagic division and is positioned at the slag blanket district above the iron pelagic division; Said bosh be divided into slag restore the district and be positioned at slag restore the district above cavity zone; Said iron notch is located at the bottom of said iron pelagic division, and said slag notch is located at the position of said slag blanket district near said iron pelagic division intersection.
Preferably, said first fuel oil atomizer is a plurality of and turns up the soil at interval and be located on the said cavate shaft.
Preferably, said a plurality of first fuel oil atomizer is located at the top and the middle part of said cavate shaft respectively.
Preferably, said a plurality of first fuel oil atomizer distributes around said cavate shaft curl.Thus, the further metallurgical effect that improves in the shaft air.
Thus; Can in the shaft cavity, spray fuel and oxygen required in the smelting process through a plurality of first fuel oil atomizers; Make fuel and oxygen be full of the middle and upper part of shaft cavity, be beneficial to iron sand and fully contact, thereby improved metallurgical effect greatly; Reduce discharge of harmful gases simultaneously, protected environment.
Preferably, said second fuel oil atomizer also is used for pulverized coal injection in said slag restores the district.Thus, can ferriferous oxide remaining in the iron sand further be reduced, improve the reduction ratio of iron, increase and produce the iron amount, reduced the iron-holder of slag.
Alternatively, the end at the bottom of the contiguous said horizontalchamber oven in the lower end of said cavate shaft, the other end at the bottom of the contiguous said horizontalchamber oven of said smoke outlet.
According to the cavate blast furnace ironmaking device of the utility model, not only simple in structure, easily manufactured; And when smelting iron with this cavate blast furnace ironmaking device, iron sand need not sintering and makes ball, and technical process is short; Energy consumption is low; Effectively reduce smelting cost, the while slag restores the district and can also further reduce to improve the output of iron to ferriferous oxide remaining in the iron sand, and effect is remarkable.
Additional aspect of the utility model and advantage part in the following description provide, and part will become obviously from the following description, or recognize through the practice of the utility model.
Description of drawings
Above-mentioned and/or additional aspect of the utility model and advantage obviously with are easily understood becoming the description of embodiment from combining figs, wherein:
Fig. 1 is the cavate blast furnace ironmaking schematic representation of apparatus according to the utility model embodiment;
Fig. 2 is the ironmaking general flow chart according to the cavate blast furnace ironmaking device of the utility model embodiment; With
Fig. 3 is the ironmaking schema according to the cavate blast furnace ironmaking device of the utility model embodiment.
Embodiment
Describe the embodiment of the utility model below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, be intended to be used to explain the utility model, and can not be interpreted as restriction the utility model.
In the utility model; It will be appreciated that; The orientation of indications such as term " " center ", " vertically ", " laterally ", " on ", D score, " preceding ", " back ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward " or position relation are for based on orientation shown in the drawings or position relation; only be to describe the utility model with simplifying for ease; but not the device of indication or hint indication or element must have specific orientation with directed, with specific orientation and directional structure and operation, therefore can not be interpreted as restriction to the utility model.In the utility model, term " first ", " second " only are used to describe purpose, and can not be interpreted as indication or hint relative importance.Term " a plurality of " refers to two or more, only if clear and definite qualification is arranged in addition.
In the utility model, only if clear and definite regulation and qualification are arranged in addition, broad understanding should be done in terms such as term " installation ", " linking to each other ", " connection ", " fixing ", for example, can be to be fixedly connected, and also can be to removably connect, or connect integratedly; Can be mechanical connection, can be directly to link to each other, also can link to each other indirectly through intermediary, and can be the connection of two element internals.For those of ordinary skill in the art, can understand the concrete implication of above-mentioned term in the utility model as the case may be.In addition, in the description of the utility model, except as otherwise noted, the implication of " a plurality of " is two or more.
The cavate blast furnace ironmaking device of describing according to the utility model embodiment with reference to figure 1 below.
Cavate blast furnace ironmaking device according to the utility model embodiment; Comprise at the bottom of cavate shaft 1, the horizontalchamber oven 2, furnace charge nozzle 3, first fuel oil atomizer 4 and second fuel oil atomizer 5; Wherein cavate shaft 1 has predetermined height and cavate shaft 1 has the shaft cavity, that is to say that cavate shaft 1 inner hollow is to limit the shaft cavity.
2 have inner chamber at the bottom of the horizontalchamber oven, and said inner chamber is divided into bosh and the cupola well that is positioned at below the bosh, for example in the specific embodiment of Fig. 1; Zone A+B=bosh, zone C+D=cupola well, wherein the a-quadrant is a cavity zone; The B zone restores the district for slag, and the C zone is the slag blanket district, and the D zone is the iron pelagic division; The lower end of cavate shaft 1 links to each other so that the shaft cavity is communicated with bosh with 2 top at the bottom of the horizontalchamber oven; The roof of bosh is provided with and the lower end of cavate shaft 1 smoke outlet 21 of spaced apart predetermined distance in the horizontal direction, is used for discharging the flue gas of iron manufacturing process, wherein is provided with the slag notch 22 and the iron notch 23 that is used to discharge molten iron that are used to discharge slag on the wall of cupola well.
As shown in Figure 1; Furnace charge nozzle 3 is located at the top of cavate shaft 1; Be used in the shaft cavity, spraying into pulverous iron sand and flux, form high temperature and the rapid reduction reaction of accomplishing most of oxide compound in the iron sand then in the shaft cavity from the top of cavate shaft 1.Here; The one of ordinary skilled in the art it is understandable that; In actual smelting process; Can change the material from furnace charge nozzle 3, spray into to improve metallurgical effect according to practical situation, for example in another embodiment of the utility model, spraying into from furnace charge nozzle 3 in the shaft cavity can be the mixture of pulverous iron sand, flux, fuel and oxygen.First fuel oil atomizer 4 is located on the cavate shaft 1, is used in the shaft cavity, spraying into fuel and oxygen, and second fuel oil atomizer 5 is located on the wall of bosh, is used in bosh, spraying into fuel and oxygen.
According to the cavate blast furnace ironmaking device of the utility model embodiment,, effectively reduced cavate blast furnace ironmaking height of devices through at the bottom of vertical cavate shaft 1 and the horizontalchamber oven 2; Not only simple in structure, make things convenient for processing and manufacturing simultaneously, reduced manufacturing cost; During ironmaking, iron sand need not sintering and makes ball, and technical process is short; Energy consumption is low, and operable fuel is extensive, thereby effectively reduces smelting cost; Can also reduce discharge of harmful gases when this cavate blast furnace ironmaking device is smelted iron in addition, be beneficial to environmental protection, thereby further improved practicality.
It is understandable that so-called vertical cavate shaft 1 is meant that shaft 1 inside is the cavity of hollow, its radial dimension is bigger highly relatively, is meant at the bottom of the so-called horizontalchamber oven that furnace bottom is a horizontal container, and height is less with respect to its size in the horizontal direction.For example, cavate shaft 1 can be to be the cardinal principle truncated cone shape.2 for having the rectangular shape of general rectangular xsect at the bottom of the horizontalchamber oven.Therefore, also can be called the cavate blast furnace according to the cavate blast furnace ironmaking device of the utility model embodiment, but compare with traditional blast furnace, height will significantly reduce, and ironmaking mechanism is different, and process is simplified greatly.
In an embodiment of the utility model; Cupola well is divided into iron pelagic division (being the D zone) and is positioned at the slag blanket district (being the C zone) above the iron pelagic division; Bosh is divided into slag and restores district's (be B zone) and be positioned at slag and restore the top cavity zone (being the a-quadrant) in district, and wherein iron notch 23 is located at the bottom of iron pelagic division, and slag notch 22 is located at the position of slag blanket district near iron pelagic division intersection; Promptly be located at bottom contiguous iron pelagic division, the slag blanket district, as shown in Figure 1.
As shown in Figure 1, first fuel oil atomizer 4 is turned up the soil for a plurality of and interval and is located on the cavate shaft 1.Advantageously, a plurality of first fuel oil atomizers 4 are located at the top and the middle part of cavate shaft 1 respectively, and more preferably, a plurality of first fuel oil atomizers 4 distribute around cavate shaft 1 curl.Thus; Can in the shaft cavity, spray fuel required in the smelting process and oxygen more equably through a plurality of first fuel oil atomizers 4 that curl distributes; Make fuel and oxygen be full of the middle and upper part of shaft cavity equably, be beneficial to iron sand and fully contact, thereby improved metallurgical effect greatly; Reduce discharge of harmful gases simultaneously, protected environment.
Alternatively, second fuel oil atomizer 5 also is used for pulverized coal injection in slag restores the district.Thus, can ferriferous oxide remaining in the iron sand further be reduced, improve the reduction ratio of iron, increase the iron amount of producing.Further alternatively, as shown in Figure 1, an end of 2 at the bottom of the contiguous horizontalchamber oven in the lower end of cavate shaft 1,2 the other end at the bottom of the smoke outlet 21 contiguous horizontalchamber ovens.
According to the cavate blast furnace ironmaking device of the utility model embodiment, not only simple in structure, easily manufactured; And when smelting iron with this cavate blast furnace ironmaking device, iron sand need not sintering and makes ball, and technical process is short; Energy consumption is low; Effectively reduce smelting cost, the while slag restores the district and can also further reduce to improve the output of iron to ferriferous oxide remaining in the iron sand, and effect is remarkable.
Below with reference to the flow process that Fig. 2-Fig. 3 description utilizes the cavate blast furnace ironmaking device of the foregoing description to smelt iron.
In the shaft cavity, spray into pulverous iron sand and flux or pulverous iron sand, flux, fuel and oxygen through furnace charge nozzle 3 from the top of cavate shaft 1;
In the shaft cavity, spray into fuel and oxygen through first fuel oil atomizer 4;
In bosh, spray into fuel and oxygen through second fuel oil atomizer 5; With
Discharge flue gas from smoke outlet 21, discharge slag, and discharge molten iron from iron notch 23 from slag notch 22.
In an embodiment of the utility model, also, cavity zone (being the a-quadrant) and slag blast hot blast, granular coke and fine coal in restoring district's (being the B zone) through second fuel oil atomizer 5.Thus, can ferriferous oxide remaining in the iron sand further be reduced, improve the reduction ratio of iron, increase and produce the iron amount, practical function is remarkable.
Utilization is smelted iron according to the cavate blast furnace ironmaking device of the utility model embodiment, and iron sand need not sintering and makes ball, and technical process is short, and method is simple, and feasibility is strong, and metallurgical effect is good, and energy consumption is low, and cost is low.
In the description of this specification sheets, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means the concrete characteristic, structure, material or the characteristics that combine this embodiment or example to describe and is contained among at least one embodiment or example of the utility model.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete characteristic, structure, material or the characteristics of description can combine with suitable manner in any one or more embodiment or example.
Although illustrated and described the embodiment of the utility model above; It is understandable that; The foregoing description is exemplary; Can not be interpreted as the restriction to the utility model, those of ordinary skill in the art can change the foregoing description in the scope at the utility model under the situation of principle that does not break away from the utility model and aim, modification, replacement and modification.
Claims (7)
1. a cavate blast furnace ironmaking device is characterized in that, comprising:
Cavate shaft, said cavate shaft have in predetermined height and the said cavate shaft and have the shaft cavity;
At the bottom of the horizontalchamber oven; Has inner chamber at the bottom of the said horizontalchamber oven; Said inner chamber is divided into bosh and the cupola well that is positioned at below the said bosh; The lower end of said cavate shaft links to each other so that said shaft cavity is communicated with said bosh with top at the bottom of the said horizontalchamber oven, and the roof of said bosh is provided with and the lower end of the said cavate shaft smoke outlet of spaced apart predetermined distance in the horizontal direction, and the wall of said cupola well is provided with slag notch and iron notch;
Be used for spraying in said shaft cavity from the top of said cavate shaft the furnace charge nozzle of pulverous iron sand and flux or pulverous iron sand, flux, fuel and oxygen, said furnace charge nozzle is located at the top of said cavate shaft;
Be used in said shaft cavity, spraying into first fuel oil atomizer of fuel and oxygen, said first fuel oil atomizer is located on the said cavate shaft; With
Be used in said bosh, spraying into second fuel oil atomizer of fuel and oxygen, said second fuel oil atomizer is located on the wall of said bosh.
2. cavate blast furnace ironmaking device according to claim 1; It is characterized in that; Said cupola well is divided into the iron pelagic division and is positioned at the slag blanket district above the iron pelagic division; Said bosh be divided into slag restore the district and be positioned at slag restore the district above cavity zone, said iron notch is located at the bottom of said iron pelagic division, said slag notch is located at the position of said slag blanket district near said iron pelagic division intersection.
3. cavate blast furnace ironmaking device according to claim 1 is characterized in that, said first fuel oil atomizer is a plurality of and turns up the soil at interval and be located on the said cavate shaft.
4. cavate blast furnace ironmaking device according to claim 3 is characterized in that said a plurality of first fuel oil atomizers are located at the top and the middle part of said cavate shaft respectively.
5. cavate blast furnace ironmaking device according to claim 3 is characterized in that, said a plurality of first fuel oil atomizers distribute around said cavate shaft curl.
6. cavate blast furnace ironmaking device according to claim 1 is characterized in that, said second fuel oil atomizer also is used for pulverized coal injection in said slag restores the district.
7. according to each described cavate blast furnace ironmaking device among the claim 1-6, it is characterized in that the end at the bottom of the contiguous said horizontalchamber oven in the lower end of said cavate shaft, the other end at the bottom of the contiguous said horizontalchamber oven of said smoke outlet.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200282911U CN202465742U (en) | 2012-01-21 | 2012-01-21 | Cavity type blast furnace ironmaking device |
| PCT/CN2013/070776 WO2013107417A1 (en) | 2012-01-21 | 2013-01-21 | Cavity-type blast furnace iron-smelting apparatus and iron-smelting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200282911U CN202465742U (en) | 2012-01-21 | 2012-01-21 | Cavity type blast furnace ironmaking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202465742U true CN202465742U (en) | 2012-10-03 |
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ID=46913920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200282911U Expired - Lifetime CN202465742U (en) | 2012-01-21 | 2012-01-21 | Cavity type blast furnace ironmaking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202465742U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605120A (en) * | 2012-01-21 | 2012-07-25 | 王铨寿 | Cavity type blast furnace iron-smelting device and method |
| WO2013107417A1 (en) * | 2012-01-21 | 2013-07-25 | Beijing Shantie Technology Co., Ltd. | Cavity-type blast furnace iron-smelting apparatus and iron-smelting method |
| CN106086280A (en) * | 2015-04-30 | 2016-11-09 | 北京闪铁科技有限公司 | System and method for gas making flash iron making |
-
2012
- 2012-01-21 CN CN2012200282911U patent/CN202465742U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605120A (en) * | 2012-01-21 | 2012-07-25 | 王铨寿 | Cavity type blast furnace iron-smelting device and method |
| WO2013107417A1 (en) * | 2012-01-21 | 2013-07-25 | Beijing Shantie Technology Co., Ltd. | Cavity-type blast furnace iron-smelting apparatus and iron-smelting method |
| CN102605120B (en) * | 2012-01-21 | 2013-09-04 | 北京闪铁科技有限公司 | Cavity type blast furnace iron-smelting device and method |
| CN106086280A (en) * | 2015-04-30 | 2016-11-09 | 北京闪铁科技有限公司 | System and method for gas making flash iron making |
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Owner name: BEIJING SHANTIE TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: WANG QUANSHOU Effective date: 20130117 |
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Effective date of registration: 20130117 Address after: 100081 Beijing City, Haidian District Zhongguancun South Street No. 12 day International Center B-1712 Patentee after: Beijing Shantie Technology Co., Ltd. Address before: 335515 No. 11, Qingyun Town, Wan County, Jiangxi, Shangrao Patentee before: Wang Quanshou |
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Effective date of registration: 20220106 Address after: Room 528, No. 67, Fucheng Road, Haidian District, Beijing 100142 Patentee after: Beijing Hengyi Zhengxing Investment Co.,Ltd. Address before: 100081 b-1712, Tianzuo International Center, No. 12, Zhongguancun South Street, Haidian District, Beijing Patentee before: BEIJING SHANTIE TECHNOLOGY Co.,Ltd. |
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