CN101269348A - Novel technique for producing limestone powder - Google Patents
Novel technique for producing limestone powder Download PDFInfo
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- CN101269348A CN101269348A CNA2007100345897A CN200710034589A CN101269348A CN 101269348 A CN101269348 A CN 101269348A CN A2007100345897 A CNA2007100345897 A CN A2007100345897A CN 200710034589 A CN200710034589 A CN 200710034589A CN 101269348 A CN101269348 A CN 101269348A
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
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Abstract
The invention provides a novel technics for preparing limestone powder. A premilling process step is added in prior to a fine mill process step. Limestone is transmitted into a premilling machine through a hopper, a vibrator feeder and a conveyor belt, then is milled into material of average size being less than or equal to 2mm, and then the material is transmitted into a fine mill for fine milling by a bucket elevator, a transfer storage facility, an electronic belt scale and a conveyor belt; the fine ground powder is transmitted to a high efficient powder concentrator for separation through an air chute and a bucket elevator, the powder below 45 micrometers is qualified and is transmitted into a finished-part storage, while the unqualified is returned to the mill for grinding. By using the novel technics, the productivity is high, the production is stable, the total energy consumption is low, the system is simple, the land occupation is less, the production cost is low, the content of fine powder is high and the efficiency of desulphurization is high.
Description
Technical field:
The present invention relates to a kind of material preparation process, be specifically related to a kind of power plant desulfurization agent agstone preparation technology.
Background technology:
In " boiler flue gas desulfurization " environmental protection project engineering of thermal power plant, the material that is used as desulfurizing agent mainly is an agstone, and the preparation of agstone is meant the metaling with the stone pit, by the grinding of professional machine, makes it to become the powder that reaches certain fineness.Traditional agstone preparation technology branch " wet method " and " dry method " two kinds.No matter traditional wet processing equipment is homemade or import, all there is the shortcoming that single machine yield is low, equipment manufacturing cost is high, unit cost is too high; Though traditional dry process has greatly reduced cost than wet processing, still have the anxiety that unit-hour output is low, quality is unstable.
Summary of the invention:
Technical problem to be solved by this invention is: solve the problem that above-mentioned prior art exists, and provide a kind of technology simple, produce stable, cost is low, greatly reduce total energy consumption, system's floor space is little, fault rate is low, easy operating and maintenance, increase substantially the Super-fine grinder powder delivery fine powder content, strengthen the novel technique for producing limestone powder of desulfurized effect.
The technical solution used in the present invention is: the lime stone raw material enters aggregate bin, the blanking of aggregate bin bottom enters vibra feeder, the vibra feeder discharging is carried through belt conveyor, enter pre-grinding machine, the mill feed material of particle diameter≤40mm is worn into the material of average grain diameter≤2mm, material after the pre-grinding is promoted by bucket elevator, enter transfer storage facility, again by the belted electronic balance weighing, belt conveyor is carried, and enters the Super-fine grinder machine, and the powder after the fine grinding of Super-fine grinder machine is through air flume, bucket elevator is sent into high-efficient powder concentrator and is carried out the powder choosing, the qualified micro mist of the particle diameter of selecting≤45 μ m is sent into warehouse for finished product, and underproof powder is picked out to return in the Super-fine grinder machine by elephant trunk and regrinds.
In the technique scheme, the supply package of vibra feeder tilts to install, the top charging, supply package termination rigidity is equipped with vibrating motor, vibrating motor drives eccentric wheel and rotates the generation vibration, supply package connects spring, and is connected on the frame by spring-loaded, and the material in the supply package evenly falls from discharging opening.
In the technique scheme, pre-grinding machine is a kind of vertical grinder, drive motors, transmission and deceleration system are installed in top, motor via reducer, belt pulley, driving belt drive the main axis rotation of pre-grinding machine, are connected and fixed three taper type rollers on the main shaft, and pre-grinding machine casing inner wall is fixed with liner plate, keep certain clearance between taper type roller and the liner plate, have mounting bracket on the pre-grinding machine casing, casing top has charging aperture, and the bottom has discharging opening.When main shaft rotates, the taper type roller both revolved round the sun around spindle axis, again owing to and liner plate between the material friction form rotation, after material feeds from charging aperture, material is subjected to roller and constantly rolling of liner plate and is pulverized in folding process, the middling flour behind the precrushing is discharged from the discharging opening of pre-grinding machine bottom.
In the technique scheme, bucket elevator is erect endless-belt for erectting to install in the outer cover, endless-belt is sleeved on the belt pulley, connect transmission by CD-ROM drive motor by belt, erect outer cover upper end one side and have discharging opening, erect outer cover lower end one side and have charging aperture, equidistant uniform a plurality of hoppers that are equipped with on the endless-belt, during the running of driven by motor endless-belt, granule materials is scraped feed hopper after the charging aperture feeding, risen to the top with hopper by belt, when hopper overturn on the top, granule materials was poured out, and discharged from discharging opening.
In the technique scheme, the Super-fine grinder machine is by feed arrangement, rotating cylinder, drawing mechanism, base bearing, running part and lubricating system are formed, drive motors passes through reduction box, pinion, the cylindrical shell gear wheel connects the transmission rotating cylinder, rotating cylinder is made of two bins, middle partition panel with an astragal hole separates, in two bins liner plate is housed all, what adorn in first bin is the stairstepping liner plate, what adorn in second bin is a watt shape liner plate, material is bored first storehouse that directly feeds in the grinding mill barrel through charging, the abrasive body of being adorned is with greatly, medium-sized abrasive body is main, its function is that the master is auxilliary with grinding with the impact, when cylindrical shell rotated, material obtained pulverizing under the percussion of bigger abrasive body of average diameter such as steel ball, and steel ball impacts with material in the process that falls and cylindrical shell rotate, collision, grind; Be ground into the material of certain particle size, stitch by the partition panel castor, enter into second storehouse, material is further pulverized and is ground by average diameter less abrasive body such as steel ball in second storehouse, reached after the certain fineness by the discharging grate plate, after drawing mechanism is discharged from grinding machine, the tail end of Super-fine grinder machine is connected with the deduster of big air quantity, and the suction airstream of deduster is provided by the mobile power that provides of material.
In the technique scheme, air flume is made up of last groove, following groove, between last groove and the following groove filtering layer is installed, filtering layer does not see through filter material powder only by air, air flume tilts to install, material is from the last groove of the high-end charging aperture feeding air flume of air flume, and outside compressed air inserts the compressed air inlet of air flume, and enters down groove, compressed air sees through the last groove that filtering layer enters air flume, and the promptly low extreme direction of direction is mobile towards downstream to carry the granular material of going up groove secretly.
In the technique scheme, high-efficient powder concentrator is an efficient rotor formula powder concentrator, rotor and dropping system are installed in the casing, rotor connects transmission by variable speed electric motors, particularly by big pinion, and the casing upper end has charging aperture, and the rotor below has the fines collection bucket, join with the fine powder outlet that the casing bottom has, casing bottom side has the meal outlet, and the casing next door also is equipped with circulating fan, and circulating fan enters powder concentrator from tangential direction.The variable speed electric motors, particularly of adjustable speed drives the rotor high-speed rotation of powder concentrator, and after granular material fed powder concentrator from top, the larger particles in the material was fallen out far away by rotor, collect together along drip plate, discharges from the meal mouth.Being fallen out by rotor than granule in the material is nearer, is collected bucket and collects together, discharges from the fine powder mouth.The circulated air that blower fan system provides enters powder concentrator from tangential direction, and the wind field that stirs with rotor has formed the classification circle, because the rotating speed of rotor is adjustable, so the fineness of sorting is adjustable.
The present invention is Promethean have been introduced pre-grinding machine (particle diameter≤60mm) has carried out pre-grinding earlier to the lime stone raw material, again with the (average grain diameter≤2mm) carry out grinding in the feeding Super-fine grinder machine of the lime stone after the pre-grinding, the discharging of Super-fine grinder machine is sent into high-efficient powder concentrator and is carried out sorting, the qualified micro mist of selecting (≤45 μ m) is sent into warehouse for finished product, the defective powder of selecting is picked out to return in the Super-fine grinder machine by elephant trunk and regrinds, therefore, native system abbreviates " pre-grinding+Super-fine grinder+select powder " system again as.Pre-grinding machine of the present invention is worn into the 2mm average grain diameter to the particle diameter of mill feed material≤60mm, its effect is that the corase grind task transfers with traditional Super-fine grinder machine 1 storehouse has arrived the outer column mill of grinding machine and does, thereby make the unit production capacity of Super-fine grinder machine increase, improve 20%, system produces more stable, and reduced system's total energy consumption (more than 20%), effectively overcome present domestic lime stone pulverized coal preparation system ubiquity finished product ash and yielded poorly and the unsettled shortcoming of quality.Adopt the Super-fine grinder grinding system of the pre-grinding of the present invention, not only system is simple, smoothness, floor space is little, and it is low also to be embodied in system failure rate, easy operating and maintenance, reduce production costs, especially can increase substantially the fine powder content of fine grinding powder delivery, help the enhancing of desulfurized effect.
Description of drawings:
Fig. 1 is a process chart of the present invention
Fig. 2 is the vibra feeder structural representation
Fig. 3 is pre-grinding machine structural representation
Fig. 4 is the bucket elevator structural representation
Fig. 5 is a Super-fine grinder machine structural representation
Fig. 6 is the air flume structural representation
Fig. 7 is the high-efficient powder concentrator structural representation
The specific embodiment:
Referring to Fig. 1, the lime stone raw material enters aggregate bin, the blanking of aggregate bin bottom enters vibra feeder, the vibra feeder discharging is carried through belt conveyor, enter pre-grinding machine, the mill feed material of particle diameter≤40mm is worn into the material of average grain diameter≤2mm, material after the pre-grinding is promoted by bucket elevator, enter transfer storage facility, again by the belted electronic balance weighing, belt conveyor is carried, enter the Super-fine grinder machine, powder after the fine grinding of Super-fine grinder machine is through air flume, bucket elevator is sent into high-efficient powder concentrator and is carried out sorting, and the qualified micro mist of the particle diameter of selecting≤45 μ m is sent into warehouse for finished product, and underproof powder is picked out to return in the Super-fine grinder machine by elephant trunk and regrinds.
Referring to Fig. 2, the supply package 1 of vibra feeder tilts to install, the top charging, supply package termination rigidity is equipped with vibration electronic 2, vibrate electronic 2 and drive eccentric wheel rotation generation vibration, supply package 1 connects spring 3, and is connected on the frame by spring 3 supportings, and the material in the supply package 1 evenly falls from discharging opening.
Referring to Fig. 3, pre-grinding machine is a kind of vertical grinder, drive motors 4, transmission and deceleration system are installed in top, motor 4 drives reductor is made pre-grinding machine again by driving belt 5 main axis rotation by belt pulley, is connected and fixed three taper type rollers 6 on the main shaft, and pre-grinding machine casing 7 inwalls are fixed with liner plate, keep certain clearance between taper type roller 6 and the liner plate, have mounting bracket 8 on the pre-grinding machine casing, casing top has charging aperture 9, and bottom of shell has discharging opening 10.When main shaft rotates, taper type roller 6 had both revolved round the sun around spindle axis, again owing to and liner plate between the material friction form rotation, after material feeds from charging aperture 9, material is subjected to roller and constantly rolling of liner plate and is pulverized in folding process, the middling flour behind the precrushing is discharged from the discharging opening 10 of pre-grinding machine bottom.
Referring to Fig. 4, bucket elevator is erect endless-belt 12 for erectting to install in the outer cover 11, endless-belt 12 is sleeved on the belt pulley 13, connect transmission by CD-ROM drive motor 14 by belt, erect outer cover 11 upper ends one side and have discharging opening 15, erect outer cover lower end one side and have charging aperture 16, equidistant uniform a plurality of hoppers 17 that are equipped with on the endless-belt 12, during 12 runnings of driven by motor endless-belt, granule materials is scraped feed hopper after the charging aperture feeding, risen to the top with hopper by belt, when hopper overturn on the top, granule materials was poured out, and discharged from discharging opening.
Referring to Fig. 5, the Super-fine grinder machine is by feed arrangement 18, rotating cylinder 19, drawing mechanism 20, base bearing 21, running part and lubricating system are formed, drive motors 22 is by reduction box 23, pinion 24, cylindrical shell gear wheel 25 connects the transmission rotating cylinder, rotating cylinder 19 is made of two bins, middle partition panel with an astragal hole separates, in two bins liner plate is housed all, what adorn in first bin is the stairstepping liner plate, what adorn in second bin is a watt shape liner plate, material is bored first storehouse that directly feeds in the grinding mill barrel through charging, the abrasive body of being adorned is with greatly, medium-sized abrasive body is main, its function is that the master is auxilliary with grinding with the impact, when cylindrical shell rotated, material obtained pulverizing under the percussion of bigger abrasive body of average diameter such as steel ball 26, and steel ball impacts with material in the process that falls and cylindrical shell rotate, collision, grind; Be ground into the material of certain particle size, stitch by the partition panel castor, enter into second storehouse, material is further pulverized and is ground by average diameter less abrasive body such as steel ball in second storehouse, reached after the certain fineness by the discharging grate plate, after drawing mechanism is discharged from grinding machine, the tail end of Super-fine grinder machine is connected with the deduster of big air quantity, and the suction airstream of deduster is provided by the mobile power that provides of material.
Referring to Fig. 6, air flume is made up of last groove 27, following groove 28, filtering layer 29 is installed between last groove 27 and the following groove 28,29 of filtering layers pass through air, do not see through filter material powder, air flume 30 tilts to install, material is from the last groove 27 of the high-end near material mouth 31 feeding air flumes of air flume 30, outside compressed air inserts the compressed air inlet of air flume, and enter down groove 28, compressed air sees through the last groove 27 that filtering layer 29 enters air flume, and the promptly low extreme direction of direction is mobile towards downstream to carry the granular material of going up groove secretly.
Referring to Fig. 7, high-efficient powder concentrator is an efficient rotor formula powder concentrator, rotor 33 and drip plate 34 are installed in the casing 32, rotor 33 connects transmission by variable speed electric motors, particularly 35 by gear wheel 36, pinion 37, and the casing upper end has charging aperture 38, and the rotor below has fines collection bucket 39, join with the fine powder outlet 40 that the casing bottom has, casing bottom side has meal outlet 41, and the casing next door also is equipped with circulating fan 42, and circulating fan enters powder concentrator from tangential direction.The variable speed electric motors, particularly of adjustable speed drives the rotor high-speed rotation of powder concentrator, and after granular material fed powder concentrator from top, the larger particles in the material was fallen out far away by rotor, collect together along drip plate, discharges from the meal mouth.Being fallen out by rotor than granule in the material is nearer, is collected bucket and collects together, discharges from the fine powder mouth.The circulated air that blower fan system provides enters powder concentrator from tangential direction, and all have formed the classification circle wind field that stirs with rotor, because the rotating speed of rotor is adjustable, so the fineness of sorting is adjustable.
Claims (5)
1. novel technique for producing limestone powder, has the Super-fine grinder operation, select the powder operation, it is characterized in that before the Super-fine grinder operation, also increase the pre-grinding operation is arranged, the lime stone raw material enters aggregate bin, the blanking of aggregate bin bottom enters vibra feeder, the vibra feeder discharging is carried through belt conveyor, enter pre-grinding machine, the mill feed material of particle diameter≤40mm is worn into the material of average grain diameter≤2mm, and the material after the pre-grinding is promoted by bucket elevator, enters transfer storage facility, again by the belted electronic balance weighing, belt conveyor is carried, and enters the Super-fine grinder machine, and the powder after the fine grinding of Super-fine grinder machine is through air flume, bucket elevator is sent into high-efficient powder concentrator and is carried out sorting, the particle diameter of selecting≤qualified micro mist of 45 μ m is sent into warehouse for finished product, and underproof powder is picked out to return in the Super-fine grinder machine by elephant trunk and regrinds.
2. agstone according to claim 1 prepares equipment, the supply package that it is characterized in that vibra feeder tilts to install, the top charging, supply package termination rigidity is equipped with vibrating motor, vibrating motor drives eccentric wheel and rotates the generation vibration, supply package connects spring, and is connected on the frame by spring-loaded.
3. agstone according to claim 1 prepares equipment, it is characterized in that pre-grinding machine is a kind of vertical grinder, drive motors, transmission and deceleration system are installed in top, motor via reducer, belt pulley, driving belt drive the main axis rotation of pre-grinding machine, be connected and fixed three taper type rollers on the main shaft, pre-grinding machine casing inner wall is fixed with liner plate, keep certain clearance between taper type roller and the liner plate, has mounting bracket on the pre-grinding machine casing, casing top has charging aperture, and the bottom has discharging opening.
4. agstone according to claim 1 prepares equipment, it is characterized in that bucket elevator is to erect to install in the outer cover to erect endless-belt, endless-belt is sleeved on the belt pulley, connect transmission by CD-ROM drive motor by belt, erect outer cover upper end one side and have discharging opening, erect outer cover lower end one side and have charging aperture, equidistant uniform a plurality of hoppers that are equipped with on the endless-belt.
5. agstone according to claim 1 prepares equipment, it is characterized in that air flume is by last groove, down groove is formed, between last groove and the following groove filtering layer is installed, filtering layer only passes through air, do not see through filter material powder, air flume tilts to install, and material is from the last groove of the high-end charging aperture feeding air flume of air flume, outside compressed air inserts the compressed air inlet of air flume, and enters down groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100345897A CN101269348A (en) | 2007-03-21 | 2007-03-21 | Novel technique for producing limestone powder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100345897A CN101269348A (en) | 2007-03-21 | 2007-03-21 | Novel technique for producing limestone powder |
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| CNA2007100345897A Pending CN101269348A (en) | 2007-03-21 | 2007-03-21 | Novel technique for producing limestone powder |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972696A (en) * | 2010-08-30 | 2011-02-16 | 天津精华石化有限公司 | Production system of desulfurized limestone powder in circulating fluidized bed (CFB) boiler |
| CN102009041A (en) * | 2010-10-13 | 2011-04-13 | 天津精华石化有限公司 | Wind powder-selecting system for column mill |
| CN102218364A (en) * | 2011-01-13 | 2011-10-19 | 抚州聚源硅业有限公司 | Preparation process of silicon metal powder with high chemical activity and low fine powder rate and special equipment |
| CN102303013A (en) * | 2011-06-13 | 2012-01-04 | 辽宁艾海滑石有限公司 | Dry-type automatic sorting system for crude talc ore |
| CN101879949B (en) * | 2009-05-04 | 2012-01-25 | 合肥丰乐种业股份有限公司 | Rice seed turning and mixing system |
| CN102923456A (en) * | 2012-07-19 | 2013-02-13 | 天蓝颜料(山东)有限公司 | Powder feeding system device |
| CN103357483A (en) * | 2013-07-22 | 2013-10-23 | 周波 | System and process for closed preparation of tile powder material |
| CN104307600A (en) * | 2014-10-10 | 2015-01-28 | 山西潞安矿业(集团)有限责任公司 | Mine sample preparation mill |
| CN104495383A (en) * | 2014-11-12 | 2015-04-08 | 宁夏嘉翔自控技术有限公司 | Pulverized coal pneumatic conveying system for magnesium smelting |
| CN104668067A (en) * | 2015-03-06 | 2015-06-03 | 宁波长荣酿造设备有限公司 | Automatic seed leaven distribution system |
| CN107745327A (en) * | 2017-11-18 | 2018-03-02 | 佛山市荣冠玻璃建材有限公司 | Can the round as a ball grinding machine of quantity-produced stone |
| CN108058850A (en) * | 2018-01-02 | 2018-05-22 | 广西联源机械化工有限公司 | The crushing packaging method and device of a kind of food-grade calcium oxide |
| CN108355814A (en) * | 2017-12-28 | 2018-08-03 | 兖矿科技有限公司 | More granularity sulfur-removing additives systems of processing and its processing method |
| CN110479469A (en) * | 2019-09-09 | 2019-11-22 | 付耀杰 | Cement treated equipment before one kind is stirred for concrete |
| CN110789752A (en) * | 2019-10-14 | 2020-02-14 | 郑州磨料磨具磨削研究所有限公司 | Automatic powder split charging machine |
| CN113559687A (en) * | 2021-07-02 | 2021-10-29 | 上海华励振环保科技有限公司 | ICR dry powder denitration desulfurization dust removal integrated device |
| CN114289171A (en) * | 2021-12-25 | 2022-04-08 | 苏州盛耀塑胶新材料有限公司 | Production system and method of superfine calcium carbonate |
-
2007
- 2007-03-21 CN CNA2007100345897A patent/CN101269348A/en active Pending
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101879949B (en) * | 2009-05-04 | 2012-01-25 | 合肥丰乐种业股份有限公司 | Rice seed turning and mixing system |
| CN101972696A (en) * | 2010-08-30 | 2011-02-16 | 天津精华石化有限公司 | Production system of desulfurized limestone powder in circulating fluidized bed (CFB) boiler |
| CN102009041A (en) * | 2010-10-13 | 2011-04-13 | 天津精华石化有限公司 | Wind powder-selecting system for column mill |
| CN102009041B (en) * | 2010-10-13 | 2012-10-10 | 天津精华石化有限公司 | Wind powder-selecting system for column mill |
| CN102218364A (en) * | 2011-01-13 | 2011-10-19 | 抚州聚源硅业有限公司 | Preparation process of silicon metal powder with high chemical activity and low fine powder rate and special equipment |
| CN102218364B (en) * | 2011-01-13 | 2013-05-08 | 抚州聚源硅业有限公司 | Preparation process of silicon metal powder with high chemical activity and low fine powder rate and special equipment |
| CN102303013A (en) * | 2011-06-13 | 2012-01-04 | 辽宁艾海滑石有限公司 | Dry-type automatic sorting system for crude talc ore |
| CN102303013B (en) * | 2011-06-13 | 2013-04-24 | 辽宁艾海滑石有限公司 | Dry-type automatic sorting system for crude talc ore |
| CN102923456A (en) * | 2012-07-19 | 2013-02-13 | 天蓝颜料(山东)有限公司 | Powder feeding system device |
| CN103357483A (en) * | 2013-07-22 | 2013-10-23 | 周波 | System and process for closed preparation of tile powder material |
| CN104307600A (en) * | 2014-10-10 | 2015-01-28 | 山西潞安矿业(集团)有限责任公司 | Mine sample preparation mill |
| CN104495383A (en) * | 2014-11-12 | 2015-04-08 | 宁夏嘉翔自控技术有限公司 | Pulverized coal pneumatic conveying system for magnesium smelting |
| CN104668067A (en) * | 2015-03-06 | 2015-06-03 | 宁波长荣酿造设备有限公司 | Automatic seed leaven distribution system |
| CN107745327A (en) * | 2017-11-18 | 2018-03-02 | 佛山市荣冠玻璃建材有限公司 | Can the round as a ball grinding machine of quantity-produced stone |
| CN108355814A (en) * | 2017-12-28 | 2018-08-03 | 兖矿科技有限公司 | More granularity sulfur-removing additives systems of processing and its processing method |
| CN108058850A (en) * | 2018-01-02 | 2018-05-22 | 广西联源机械化工有限公司 | The crushing packaging method and device of a kind of food-grade calcium oxide |
| CN110479469A (en) * | 2019-09-09 | 2019-11-22 | 付耀杰 | Cement treated equipment before one kind is stirred for concrete |
| CN110789752A (en) * | 2019-10-14 | 2020-02-14 | 郑州磨料磨具磨削研究所有限公司 | Automatic powder split charging machine |
| CN113559687A (en) * | 2021-07-02 | 2021-10-29 | 上海华励振环保科技有限公司 | ICR dry powder denitration desulfurization dust removal integrated device |
| CN113559687B (en) * | 2021-07-02 | 2024-04-23 | 上海华励振环保科技有限公司 | ICR dry powder denitration desulfurization dust removal integrated device |
| CN114289171A (en) * | 2021-12-25 | 2022-04-08 | 苏州盛耀塑胶新材料有限公司 | Production system and method of superfine calcium carbonate |
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Owner name: SHENZHEN SAMABC PULVERIZED FUEL ASH TECHNOLOGY DEV Free format text: FORMER OWNER: HUNAN ELECTRICITY FLYASH DEVELOPMENT CO., LTD. Effective date: 20110908 |
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Free format text: CORRECT: ADDRESS; FROM: 410007 CHANGSHA, HUNAN PROVINCE TO: 518034 SHENZHEN, GUANGDONG PROVINCE |
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Effective date of registration: 20110908 Address after: 518034 room 1207, people's building, Shennan Avenue, Shenzhen, Futian District, Guangdong Applicant after: Hu'nan Electricity Flyash Development Co., Ltd. Address before: 410007 Hunan province Changsha high tech Development Zone, Lu Lu Tin Road No. 8 Valley Oak Park No. 7 210-212 Applicant before: Hunan Electricity Flyash Development Co., Ltd. |
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Application publication date: 20080924 |