CN107265894A - A kind of ardealite pretreatment system - Google Patents
A kind of ardealite pretreatment system Download PDFInfo
- Publication number
- CN107265894A CN107265894A CN201710645838.XA CN201710645838A CN107265894A CN 107265894 A CN107265894 A CN 107265894A CN 201710645838 A CN201710645838 A CN 201710645838A CN 107265894 A CN107265894 A CN 107265894A
- Authority
- CN
- China
- Prior art keywords
- ceiling
- ardealite
- enclosure wall
- distribution device
- flow flue
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B11/00—Calcium sulfate cements
- C04B11/02—Methods and apparatus for dehydrating gypsum
- C04B11/022—Simultaneous dehydrating of gypsum and slaking of lime
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B11/00—Calcium sulfate cements
- C04B11/26—Calcium sulfate cements strating from chemical gypsum; starting from phosphogypsum or from waste, e.g. purification products of smoke
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Drying Of Solid Materials (AREA)
- Building Environments (AREA)
Abstract
A kind of ardealite pretreatment system, belongs to building material field, including ground floor, enclosure wall, air inlet, ceiling, blower fan, distribution device, exhaust apparatus, automatic fetching device, column, within the walls hot-flow flue, partition wall, underground hot-flow flue；Described ground floor is arranged in the range of enclosure wall encirclement；Described enclosure wall is arranged on ceiling periphery；Air inlet is arranged on enclosure wall；Described ceiling is arcuate structure；Assembling is on distribution device；Automatic fetching device described in described automatic fetching device is arranged between enclosure wall and distribution device；Described column is arranged on the middle part of ceiling；Described hot-flow flue within the walls is arranged in partition wall；Described underground hot-flow flue is arranged on the lower section of ground floor；With that further can be preheated using solar energy and preheating furnace, the energy is saved；The moisture evaporation of ardealite when can speed up cloth, the moisture content of quick reduction ardealite；The stable ardealite of moisture content uniformly can be conveyed to preheating furnace, keep the characteristics of production capacity is stable.
Description
Technical field
The invention belongs to building material field, more particularly to one kind is calcined industry by-product gypsum particularly ardealite
It is changed into the ardealite pretreatment system during plaster of Paris.
Background technology
Ardealite is one kind of industry by-product gypsum, is phosphorous chemical industry industrial enterprise to prevent a large amount of sulphur in process of production
The exhaust emission environment of acid ion, the industry by-product gypsum produced after neutralization, due to wherein containing substantial amounts of phosphate anion
And moisture, and contain harmful substance, it is impossible to it is directly used in construction；Because the yield of ardealite is increasing, phosphorus
Gypsum accumulation is difficult to handle, and forms secondary pollution, becomes each insoluble problem of phosphorous chemical industry enterprise；Therefore, this Shen
Earlier application of asking someone patent application " a kind of processing method of ardealite, application number：2015100759558 " and a kind of " industry
The pretreatment system of gypsum, application number：2016101006108”；Find there is problems with, first, phosphorous chemical industry after implementation
Amount of the ardealite of output containing Free water is very big on production line, and there is moisture content decline using the technical scheme of earlier application can not
Enough demands for meeting automatic calcining production line；Furthermore, ardealite in sunlight factory building by distributing device be distributed to ground it is in heaps after,
The evaporation of its surface moisture is more, and moisture content is low, and inner aqueous rate is high, using the reclaimer device of earlier application, causes different periods to send
Enter ardealite moisture content in preheating furnace different, so as to cause yield unstable, because unit interval during moisture content high calcining
Yield poorly, the low yield in unit time of moisture content is high, causes calciner difficulty of parameter tuning；3rd, the sunlight of earlier application
Power house ventilation amount is small and layout is unreasonable, causes the vapor that ardealite evaporates to dissipate in time, air is wet in factory building
Degree is big, influences the moisture evaporation of ardealite；4th, distribution device in cloth by ardealite free gravity fall, its with
The hot air time not enough, causes moisture evaporation speed inadequate in factory building；5th, it is simple by too in the factory building of earlier application
Positive energy, although the moisture evaporation of ardealite is added, still, it is necessary to expend a large amount of energy for the calcination process of ardealite
Source, if it is possible to be capable of the water content of some more reduction ardealites in pretreatment stage, it becomes possible to save mass energy.
The content of the invention
The above mentioned problem existed in the application for the ardealite pretreatment system of earlier application, the present invention proposes a kind of phosphorus
Gypsum pretreatment system, it is characterised in that：Ground floor, enclosure wall, air inlet, ceiling, blower fan, distribution device, exhaust apparatus, automatically
Feeding device, column, within the walls hot-flow flue, partition wall, underground hot-flow flue；Described ground floor is arranged in the range of enclosure wall encirclement；
Described enclosure wall is arranged on ceiling periphery, and its height is less than or equal to 3000 millimeters；Described air inlet is arranged on enclosure wall, is run through
Enclosure wall thickness；Closing opening device is installed on described air inlet；Described closing opening device is shutter either door；
Described air inlet has multiple；Described ceiling is arcuate structure, is made of clear material, and there is support member its inner side, and it is supported
Part one end is connected with enclosure wall, and middle part is connected with column；Described assembling, being capable of unloading with distribution device on distribution device
Flitch is moved together；Described blower fan air-out direction is the direction away from distribution device side；Described distribution device is arranged on
Column side it is aerial, match with the length of ceiling；Described distribution device is Belt Conveying belt distribution device, is pacified thereon
Equipped with the stripper that can be moved along conveyer belt length direction；Described exhaust apparatus is arranged on Middle face on ceiling；Described
Exhaust apparatus is lateral exit, and cover is arranged at top, and its length direction is consistent with the length direction of ceiling；Described automatic fetching device
It is rectilinearly-movable top layer feeding device between enclosure wall and distribution device；Described column is arranged on the middle part of ceiling,
Have multiple, top is connected with ceiling support member, and bottom is connected with ground base；Described hot-flow flue within the walls is arranged in partition wall,
The length of insertion partition wall；One end is connected with air inlet system, and the other end is connected with outlet system of air；Described partition wall is arranged on ground floor
On, positioned at ceiling width center line；Described partition wall is highly less than or equal to 3000 millimeters；Described underground hot-flow flue is arranged on
The lower section of ground floor, the length direction of insertion ground floor；Described underground hot-flow flue has multiple, and one end is connected separately with air inlet system
One end is connected with outlet system of air；Described air inlet system is arranged on one end of ground floor, and its outlet is with underground hot-flow flue and within the walls
Hot-flow flue is connected, and its import is connected with the air outlet of the preheating furnace of ardealite pretreatment system；Set in described outlet system of air
There is drainage system.
Beneficial effect
The beneficial effects of the present invention are can further be preheated using solar energy and preheating furnace, save the energy；It can speed up cloth
The moisture evaporation of ardealite during material, the moisture content of quick reduction ardealite；Uniformly moisture content stabilization can be conveyed to preheating furnace
Ardealite, keeps production capacity stable.
Brief description of the drawings
Fig. 1 is the cross section view of the present invention
1. ground floor, 2. enclosure walls, 3. air inlets, 4. ceilings, 5. blower fans, 6. distribution devices, 7. exhaust apparatus, 8. automatic material takings dress
Put, 9. columns, 10. hot-flow flues, 11. partition walls, 12. underground hot-flow flues within the walls.
Embodiment
In order to further illustrate technical scheme, in conjunction with accompanying drawing, illustrate the embodiment of the present invention；Such as
100000 millimeters of the length of enclosure wall 2,3000 millimeters of the height of enclosure wall 2,500 millimeters of the thickness of enclosure wall 2, two are selected in Fig. 1, this example
Set and import and export and installation door on 32000 millimeters of the spacing of gusset wall 2, two ends enclosure wall 2；Ground floor 1 is laid using cement mortar；
On enclosure wall 2 apart from 500 millimeters of ground setting, 1500 millimeters of width, 1000 millimeters of height is provided with the shutter that can be opened and closed
Opening as air inlet 3, be uniformly covered with enclosure wall from 10000 millimeters of length direction interval of the air inlet 3 along enclosure wall 2 in this example
2；From steel structure support glass curtain wall mode as ceiling 4, the two ends of ceiling 4 are connected with enclosure wall 2, and middle part connects with column 9
Connect, in arc-shaped structure, the height of its center line position and column junction is 12000 millimeters；Selected in this example with shield
Fan type blower fan is installed in below the blanking plate mobile device of distribution device 6 and positioned at the phosphorus stone of blanking plate as blower fan 5
Cream feeds side；Distribution device 6 in this example selects earlier application " a kind of pretreatment system of industrial gypsum, application number：
Distribution device in 2016101006108 " is used as the distribution device 6 in this example；From two distribution devices 6 in this example, respectively
Installed in apart from the aerial of 9500 millimeters of ground, positioned at 4000 millimeters of the two lateral extent column of column 9, wherein distribution device 6
Convey bandwidth and select 950 millimeters；3000 millimeters of the height of exhaust apparatus 7,2000 millimeters of width, length are selected in this example
15000 millimeters, from 3, it is evenly arranged in the upper surface of ceiling 4 and on the center line where column 9；Exhaust apparatus 7 is adopted
Use both sides shutter, the hollow form of upper arcuate cover, and the corresponding position opening of ceiling 4 be allowed to the inner side insertion of ceiling 4,
It can realize that indoor and outdoor is ventilated；From the cant beam mobile model reclaimer combination insertion conveying that the barghs such as colliery are general in this example
Feeding device with composition is as automatic fetching device 8, and the structure of such a device is installed substantially on the support of distribution device 6
Upper track, identical with the conveying strip length of distribution device 6, be arranged in parallel belt-type at the inner distance enclosure wall 2500 of enclosure wall 2
Conveyer belt, sets horizontal rail close to the side of enclosure wall 2 on this conveyer belt top, cant beam is erected between two tracks, and is pacified
Fill power transmission and running gear；Reclaimer is installed close to horizontal rail one end in cant beam, and is hinged with cant beam, in cant beam on
Pulley is installed in portion, is connected using the free end of steel wire rope and reclaimer, and the free end of reclaimer can be adjusted by hoist engine
Highly；Reclaimer uses scraper-type reclaimer；From steel construction steel tower formula column as column 9 in this example, by the lower end of column 9
It is connected with the foundation base on ground, upper end is made frame with the middle part of ceiling 4 and is connected, the cross-sectional width in this example from column 9 is 1000
1000 millimeters of mm length；From multiple columns 9, along the uniform length side for being covered with ceiling 4 in 5000 millimeters of the center line interval of ceiling 4
To；1000 millimeters of width is selected in this example, the hollow-core construction of 3000 millimeters of height is used as partition wall 11,100 millimeters of wall thickness, length
100000 millimeters run through whole factory building, and its underpart is connected with ground, and top is hanging；Hollow space in this example from partition wall 11 is made
For hot-flow flue 10 within the walls, its one end is connected with air inlet system, the other end is connected with outlet system of air；Cross-sectional width is selected in this example
1000 1000 millimeters of thickness apart from ground floor 1 of height are used as underground hot-flow flue 12, its length for 100 millimeters of underpass
Degree runs through whole factory building, and one end is connected with air inlet system, and the other end is connected with outlet system of air；From 6 underground hot blasts in this example
Road 12,4000 millimeters of center lines along partition wall 10 of spacing distance are symmetrically and evenly distributed；By the conveyer belt of automatic fetching device 8 and preheating
The feeding web connection of stove, the discharge pipe of air inlet system and preheating furnace is connected, outlet system of air is connected with discharge duct, and
Drainage system in outlet system of air is connected with delivery port, the implementation of the present invention is just completed.
Using when, ardealite is transported in the factory building of the present invention from production line or stock ground, by neutralizing device by phosphorus
Gypsum enters distribution device 6 after being mixed with lime under agitation, and distribution device 6 passes through mixed ardealite on distribution device 6
Conveyer belt is transported to the distal end of factory building, is shed in the air to the aerial of the side of distribution device 6, in the ardealite and factory building shed out
Hot air, accelerate ardealite moisture volatilization, while during shedding, 5 pairs of blower fan is shed out in aerial phosphorus
Gypsum is blowed, and more accelerates the volatilization of ardealite surface moisture, and the moisture of volatilization passes through by air inlet 2 and exhaust apparatus 7
Outside the gas channel discharge factory building of composition；With shedding for ardealite, the blanking plate on distribution device 6 starts to charging
One end move, stop ardealite to the conveyer belt of blanking plate rear end move and in the position of blanking plate to shedding in the air, thus
Ardealite is uniformly shed and fallen and is located on the surface of ground floor 1 near partition wall 11；The ardealite fallen earthward is in ground floor 1
On by underground hot-flow flue 12 heating, close to partition wall 11 ardealite by hot-flow flue 10 within the walls heating, accelerate ardealite
Moisture evaporation；And the automatic fetching device 8 in this example carries out feeding, that is, automatic material taking dress by the way of individual layer feeding
The top layer feeding for the ardealite that 8 reclaimer is accumulated along ground is put, from one end of factory building to another end motion, this makes it possible to protect
Demonstrate,prove the ardealite moisture content difference obtained less, be conducive to the steady operation of calcination system；Automatic fetching device 8 is by the phosphorus of acquisition
Gypsum feeding preheating furnace is preheated, and the free moisture in ardealite is further removed, because preheating furnace uses calcining furnace
Discharge hot gas, therefore save the energy, this completes the course of work of ardealite pretreatment system.
Claims (8)
1. a kind of ardealite pretreatment system, it is characterised in that：Ground floor, enclosure wall, air inlet, ceiling, blower fan, distribution device,
Exhaust apparatus, automatic fetching device, column, within the walls hot-flow flue, partition wall, underground hot-flow flue；Described ground floor is arranged on enclosure wall
In the range of encirclement；Described enclosure wall is arranged on ceiling periphery；Described air inlet is arranged on enclosure wall, through enclosure wall thickness；
Described ceiling is arcuate structure, is made of clear material, and there is support member its inner side, and its support member one end is connected with enclosure wall, in
Portion is connected with column；Described assembling can be moved on distribution device with the stripper of distribution device；Described
Distribution device is arranged on the aerial of column side, matches with the length of ceiling；Described distribution device is Belt Conveying belt
Distribution device, is provided with the stripper that can be moved along conveyer belt length direction thereon；Described exhaust apparatus is arranged on ceiling
Upper Middle face；Described exhaust apparatus is lateral exit, and cover is arranged at top, and its length direction is consistent with the length direction of ceiling；Institute
The automatic fetching device described in automatic fetching device stated is arranged between enclosure wall and distribution device, is that rectilinearly-movable top layer takes
Expect device；Described column is arranged on the middle part of ceiling, there is multiple, and top is connected with ceiling support member, bottom and ground base
Connection；Described hot-flow flue within the walls is arranged in partition wall, the length of insertion partition wall；One end is connected with air inlet system, the other end with
Outlet system of air is connected；Described partition wall is arranged on ground floor, positioned at ceiling width center line；Described underground hot-flow flue is set
Put in the lower section of ground floor, the length direction of insertion ground floor；Described underground hot-flow flue has multiple, and one end connects with air inlet system
The logical other end is connected with outlet system of air；Described air inlet system is arranged on one end of ground floor, its export with underground hot-flow flue and
Hot-flow flue is connected within the walls, and its import is connected with the air outlet of the preheating furnace of ardealite pretreatment system.
2. a kind of ardealite pretreatment system according to claim 1, it is characterised in that：Described enclosure wall highly be less than etc.
In 3000 millimeters.
3. a kind of ardealite pretreatment system according to claim 1, it is characterised in that：It is provided with described air inlet
Close opening device.
4. a kind of ardealite pretreatment system according to claim 3, it is characterised in that：Described closing opening device is
Shutter either door.
5. a kind of ardealite pretreatment system according to claim 1, it is characterised in that：Described air inlet has multiple.
6. a kind of ardealite pretreatment system according to claim 1, it is characterised in that：Described blower fan air-out direction is
Direction away from distribution device side.
7. a kind of ardealite pretreatment system according to claim 1, it is characterised in that：Described partition wall highly be less than etc.
In 3000 millimeters.
8. a kind of ardealite pretreatment system according to claim 1, it is characterised in that：Set in described outlet system of air
There is drainage system.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710645838.XA CN107265894A (en) | 2017-08-01 | 2017-08-01 | A kind of ardealite pretreatment system |
| PCT/CN2017/112083 WO2019024335A1 (en) | 2017-08-01 | 2017-11-21 | Pretreatment system for phosphogypsum calcination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710645838.XA CN107265894A (en) | 2017-08-01 | 2017-08-01 | A kind of ardealite pretreatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107265894A true CN107265894A (en) | 2017-10-20 |
Family
ID=60074612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710645838.XA Pending CN107265894A (en) | 2017-08-01 | 2017-08-01 | A kind of ardealite pretreatment system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107265894A (en) |
| WO (1) | WO2019024335A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108996534A (en) * | 2018-07-09 | 2018-12-14 | 铜陵菻科工业石膏综合利用有限责任公司 | A method of reducing industry by-product gypsum moisture content |
| WO2019024335A1 (en) * | 2017-08-01 | 2019-02-07 | 郑州三迪建筑科技有限公司 | Pretreatment system for phosphogypsum calcination |
| CN109879617A (en) * | 2019-03-29 | 2019-06-14 | 郑州三迪建筑科技有限公司 | A kind of ardealite diminishing sunlight shed |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB650006A (en) * | 1948-07-22 | 1951-02-07 | British Rema Mfg Company Ltd | Improvements in and relating to calcining gypsum |
| CN203095882U (en) * | 2012-12-19 | 2013-07-31 | 泰山石膏股份有限公司 | Pretreatment device of phosphogypsum for producing paper faced gypsum board |
| CN204999808U (en) * | 2015-07-28 | 2016-01-27 | 河南聚能新型建材有限公司 | Preceding pretreatment systems of sediment is arranged to phosphate fertilizer plant's ardealite |
| CN105481277A (en) * | 2016-02-24 | 2016-04-13 | 郑州三迪建筑科技有限公司 | Plant of pretreatment system for industrial gypsum |
| CN205635382U (en) * | 2016-02-24 | 2016-10-12 | 郑州三迪建筑科技有限公司 | Pretreatment systems of industry gypsum |
| CN206986042U (en) * | 2017-08-01 | 2018-02-09 | 郑州三迪建筑科技有限公司 | A kind of ardealite pretreatment system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3577483B2 (en) * | 2002-02-25 | 2004-10-13 | マルショウ技研 株式会社 | Wood drying equipment and low temperature drying method |
| CN201007594Y (en) * | 2006-12-28 | 2008-01-16 | 山东泰和东新股份有限公司 | Tube bundle machine dedicated for industry by-product gypsum |
| JP5302284B2 (en) * | 2010-10-28 | 2013-10-02 | 株式会社 エコファクトリー | Drying equipment |
| CN105645796B (en) * | 2016-02-24 | 2018-07-27 | 郑州三迪建筑科技有限公司 | A kind of pretreatment system of industrial gypsum |
| CN107265894A (en) * | 2017-08-01 | 2017-10-20 | 郑州三迪建筑科技有限公司 | A kind of ardealite pretreatment system |
-
2017
- 2017-08-01 CN CN201710645838.XA patent/CN107265894A/en active Pending
- 2017-11-21 WO PCT/CN2017/112083 patent/WO2019024335A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB650006A (en) * | 1948-07-22 | 1951-02-07 | British Rema Mfg Company Ltd | Improvements in and relating to calcining gypsum |
| CN203095882U (en) * | 2012-12-19 | 2013-07-31 | 泰山石膏股份有限公司 | Pretreatment device of phosphogypsum for producing paper faced gypsum board |
| CN204999808U (en) * | 2015-07-28 | 2016-01-27 | 河南聚能新型建材有限公司 | Preceding pretreatment systems of sediment is arranged to phosphate fertilizer plant's ardealite |
| CN105481277A (en) * | 2016-02-24 | 2016-04-13 | 郑州三迪建筑科技有限公司 | Plant of pretreatment system for industrial gypsum |
| CN205635382U (en) * | 2016-02-24 | 2016-10-12 | 郑州三迪建筑科技有限公司 | Pretreatment systems of industry gypsum |
| CN206986042U (en) * | 2017-08-01 | 2018-02-09 | 郑州三迪建筑科技有限公司 | A kind of ardealite pretreatment system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019024335A1 (en) * | 2017-08-01 | 2019-02-07 | 郑州三迪建筑科技有限公司 | Pretreatment system for phosphogypsum calcination |
| CN108996534A (en) * | 2018-07-09 | 2018-12-14 | 铜陵菻科工业石膏综合利用有限责任公司 | A method of reducing industry by-product gypsum moisture content |
| CN109879617A (en) * | 2019-03-29 | 2019-06-14 | 郑州三迪建筑科技有限公司 | A kind of ardealite diminishing sunlight shed |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019024335A1 (en) | 2019-02-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107265894A (en) | A kind of ardealite pretreatment system | |
| CN201046589Y (en) | Straight-line type paper-face gypsum plate production line | |
| CN102358678A (en) | Sludge desiccation system | |
| CN104482742A (en) | Fuel drying device used for direct combustion biomass power station | |
| CN206986042U (en) | A kind of ardealite pretreatment system | |
| CN204535367U (en) | A kind of cement rotary kiln | |
| CN202613936U (en) | Continuous photovoltaic materials microwave drying device | |
| CN103148692A (en) | Vertical briquette dryer | |
| CN104957048A (en) | Rabbit hutch suitable for scale breeding of rabbits | |
| CN202890433U (en) | Tobacco curing room | |
| CN105645796A (en) | Pretreatment system of industrial gypsum | |
| CN209399713U (en) | A kind of environmental protection gypsum board manufacture drying machine | |
| CN104816378B (en) | All rotary kiln brickmaking synchronizing moving desulfurizers | |
| CN201881468U (en) | Longitudinally-arranged maintaining and drying system for gypsum wallboards | |
| CN208273830U (en) | A kind of multifunctional culture system | |
| CN205228143U (en) | System for adobe stoving sintering | |
| CN205635382U (en) | Pretreatment systems of industry gypsum | |
| CN104944809A (en) | High-efficiency energy-saving lime kiln | |
| CN203704647U (en) | Rotary type energy-saving kiln | |
| CN205228128U (en) | Drying system of gangue shale adobe | |
| CN113246284A (en) | Automatic change environmental protection brick manufacturing shop | |
| CN105481277B (en) | A kind of workshop of the pretreatment system of industrial gypsum | |
| CN207991194U (en) | A kind of two drying kiln of tunnel suspension type bamboo curtain splint | |
| CN102853645A (en) | Air uniformly-distributing and humiture regulating method and device for chamber-type drying chamber | |
| CN203798128U (en) | Moisture removing device for waste heat drying room |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20230228 |
|
| AD01 | Patent right deemed abandoned |