CN106931775A - A kind of kilndust returned to calcining zone device - Google Patents
A kind of kilndust returned to calcining zone device Download PDFInfo
- Publication number
- CN106931775A CN106931775A CN201710277985.6A CN201710277985A CN106931775A CN 106931775 A CN106931775 A CN 106931775A CN 201710277985 A CN201710277985 A CN 201710277985A CN 106931775 A CN106931775 A CN 106931775A
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- Prior art keywords
- rotary kiln
- cylinder
- case
- returned
- kilndust
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- 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.)
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- 238000001354 calcination Methods 0.000 title claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 49
- 238000007789 sealing Methods 0.000 claims description 42
- 238000010276 construction Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 4
- 238000010304 firing Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 description 43
- 238000010438 heat treatment Methods 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/32—Arrangement of devices for charging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/22—Rotary drums; Supports therefor
- F27B7/24—Seals between rotary and stationary parts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention discloses a kind of kilndust returned to calcining zone device, including the case on the outside of cylinder of rotary kiln being arranged in a ring, cylinder of rotary kiln outside being arranged on and is connected the outside material guide structure inside cylinder of rotary kiln with case, cylinder of rotary kiln is rotated with case and is connected.The beneficial effects of the invention are as follows：The present invention can realize carrying out feeding in the middle part of rotary kiln, shorten the effects such as firing time, reduction windage, reduction energy consumption so as to play, and feeding can be automatically carried out when rotary kiln is used, so as to play the effects such as improve production efficiency, the labour intensity of reduction staff.
Description
Technical field
It is a kind of kilndust returned to calcining zone device specifically the present invention relates to rotary kiln field.
Background technology
Rotary kiln is widely used in cement industry, chemical engineering industry, metallurgical industry.Operationally, raw material are from feeding intake for rotary kiln
To burning till between clinker, a certain amount of dust that can be leaked out, these dust form kiln ash after being collected through dust-precipitator, because not having
Clinker standard is reached, it is necessary to be calcined again.Kiln ash is tiny due to particle, and heating is rapid, it is not necessary to which long time roasting can just turn
Chemical conversion clinker.If kiln ash is returned in kiln from kiln tail, actual roasting time is much larger than required time, there is considerably long when burning till
Between be to slattern, and from kiln tail pan feeding, increased the windage from kiln hood to kiln tail, the electric current of cave tail's releaser also increases therewith
Plus.The kiln ash put into from kiln, firing time has about saved half than kiln tail pan feeding, and power consumption greatly reduces；Only influence simultaneously
Windage in kiln hood to kiln, from the overall windage for, be but reduction of.So the rotary kiln more than generation kiln ash deal
System, middle part sets drawing-in device, is necessary.Or several parallel rotary systems, collect kiln ash after, concentrate from
Fed in one kiln of kiln, be also feasible.
At present, without kilndust returned to calcining zone device, kiln ash can only be returned and pour into rotary kiln existing similar-type products from kiln tail,
Firing time, windage are increased, the energy is consumed more, unit cost is increased.
The content of the invention
It is an object of the invention to provide a kind of kilndust returned to calcining zone that can shorten firing time, reduce windage, reduce energy consumption
Device.
The present invention is achieved through the following technical solutions：A kind of kilndust returned to calcining zone device, including rotary kiln cylinder is arranged in a ring
The case of external side, the outside material guide structure for being arranged on cylinder of rotary kiln outside and connecting cylinder of rotary kiln inside and case, return
Rotary kiln cylinder is rotated with case and is connected.The present invention can recycle outside material guide structure to lead raw material to raw material are added in case
Enter to inside rotary kiln, so as to realize that the medium position in cylinder of rotary kiln carries out the function of feeding, it is to avoid kiln ash can only be from kiln
Tail is returned and pours into rotary kiln.
Described outside material guide structure include several opening towards cylinder of rotary kiln rotation direction feeding spoon and it is some
The individual lifting blade being arranged in feeding spoon；Described feeding spoon includes and and rotary kiln identical with cylinder of rotary kiln outer surface profile
Baffle plate and be arranged on base plate both sides and the side plate being connected with baffle plate that the base plate and base plate of cylinder connection are connected；Described lifting
Plate is arranged between two side plates；The opening connected with cylinder of rotary kiln inside is provided with described base plate.Fed by setting
Automatic during rotation from the opening of feeding spoon can be added to inside rotary kiln raw material by scoop, is easy to implement certainly with this
Dynamicization is fed, and is conducive to improve production efficiency and reduces the labour intensity of staff, and life can also be made by setting lifting blade
Material dispersion, it is to avoid caking, is conducive to improving the degree of scatter after raw material enter rotary kiln inside, so that raw material heating surface
Product increases, and is conducive to improving the efficiency burnt till, and the required time is burnt till in shortening, improves the utilization rate of the energy.
Be provided with that several correspond with outside material guide structure and connect on the inwall of described cylinder of rotary kiln leads
Hopper；Described material guiding hopper is designed as tubulose.By setting the direction that material guiding hopper can control raw material to enter inside rotary kiln, have
Beneficial to the situation for avoiding raw material from entering occurring piling up behind rotary kiln inside, it is to avoid raw material are heated uneven and reduce the efficiency burnt till
Or increase the time burnt till.
Described material guiding hopper is obliquely installed along rotary kiln rotation direction reversed.It is easy to disperse raw material with this, it is to avoid raw material
There is situation about piling up, additionally it is possible to by the upper space in raw material conveyor to rotary kiln, so as to improve the sky inside rotary kiln
Between utilization rate, be conducive to increase raw material heating surface area, improve the energy utilization rate.
Described material guiding hopper offers sub-material mouthful near the side of cylinder of rotary kiln；The outlet of material guiding hopper is provided with cutting plate.
It is easy to disperse raw material with this, so as to increase the heating surface area of raw material, improves the utilization rate of the energy.
Described outside material guide structure is evenly distributed on the circumference concentric with rotary kiln.Be conducive to improving space profit with this
With rate so that raw material can uniformly cause to be heated evenly in rotary kiln inner dispersion.
Sealing structure is provided between described cylinder of rotary kiln and case, described sealing structure includes being arranged on revolution
A sealing structures on kiln cylinder body and the B sealing structures for being arranged on case and being relatively rotated with A sealing structures.It is close by setting
Seal structure, can avoid debris from entering into inside the present invention, it is also possible to prevent raw material from spilling and cause environmental pollution and material wave
Take.
Described A sealing structures include the barrel support ring being arranged on cylinder of rotary kiln and are sealed with barrel support ring to connect
Connect and the middle ring with annular groove；B sealing structures include being arranged on case and are sealed with the annular groove of middle ring and connect
The case sealing ring for connecing.Can make middle ring that certain displacement occur with case sealing ring with this, so as to heat expansion occur in rotary kiln
During the phenomenons such as axially reciprocating when shrinkage, alignment error, normal work and radially wobbling of causing and axial float, it is ensured that close
Sealing property is not affected, and can effectively prevent kiln ash or raw material from leaking, and by setting middle ring, can be ground in middle ring
It is changed after damage, so as to subtract reduced-maintenance cost.
The baffle plate on case is provided between described sealing structure and outside material guide structure.By setting baffle plate
Obstruct can be played a part of, cause the abrasion of sealing structure to add so as to prevent raw material or kiln ash from entering into sealing structure inside
Play, is conducive to extending the service life of sealing structure, reduces the cost safeguarded.
Described case is annular；Charge door and the supporting construction for supporting case are provided with described case；
Inspection door is provided with described case.
The present invention compared with prior art, with advantages below and beneficial effect：
The present invention can be realized carrying out feeding in the middle part of rotary kiln, and firing time, reduction windage, reduction energy consumption are shortened so as to play
Deng effect, and feeding can be automatically carried out when rotary kiln is used, so as to play improve production efficiency, reduce staff's
Labour intensity etc. is acted on.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the schematic diagram of sealing structure；
Fig. 3 is the structural representation of feeding spoon；
Fig. 4 is the front sectional view of feeding spoon；
Fig. 5 is the structural representation of material guiding hopper；
Fig. 6 is the front sectional view of material guiding hopper；
Fig. 7 is the position relationship schematic diagram of feeding spoon and material guiding hopper；
Wherein 1-feeding spoon, 11-base plate, 12-baffle plate, 13-side plate, 14-lifting blade, 2-material guiding hopper, 21-sub-material mouthful,
22-cutting plate, 3-charge door, 4-case, 5-supporting construction, 6-barrel support ring, 7-middle ring, the sealing of 8-case
Ring, 9-sealed connecting component, 10-inspection door.
Specific embodiment
The present invention is described in further detail with reference to embodiment, but embodiments of the present invention not limited to this.
Embodiment 1：
In the present embodiment, a kind of kilndust returned to calcining zone device, including be arranged on case 4 on the outside of cylinder of rotary kiln in a ring, be arranged on
Cylinder of rotary kiln outside simultaneously connects the outside material guide structure inside cylinder of rotary kiln with case 4, and cylinder of rotary kiln is rotated with case 4
Connection.Case 4 is arranged on the medium position of rotary kiln, described case 4 there are three faces and with cylinder of rotary kiln around formation sky
Chamber, outside material guide structure is located in cavity, to raw material are added in case 4, when rotary kiln is rotated, drives outside to lead by rotary kiln
Material structure is rotated and by inside raw material conveyor to rotary kiln, so as to realize the function of feeding.With this so that firing time compares kiln tail
Pan feeding saves half, shortens and burns till the required time, and advantageously reduces energy consumption and windage.
Embodiment 2：
As shown in figure 1, on the basis of above-described embodiment, in the present embodiment, described outside material guide structure is opened including several
Mouth is arranged on the lifting blade 14 in feeding spoon 1 towards the feeding spoon 1 of cylinder of rotary kiln rotation direction with several.Such as Fig. 3, Fig. 4
It is shown, described feeding spoon include base plate 11 identical with cylinder of rotary kiln outer surface profile and being connected with cylinder of rotary kiln and
Baffle plate 12 and be arranged on the both sides of base plate 11 and the side plate 13 being connected with baffle plate 12 that base plate 11 is connected；Described lifting blade 14 is set
Between two side plates 13；The opening connected with cylinder of rotary kiln inside is provided with described base plate 11.It is straight when rotary kiln
When footpath is less than 3m, feeding spoon 1 sets two.When the diameter of rotary kiln is between 3m ~ 4m, feeding spoon 1 sets three.Work as revolution
Kiln with diameter greater than 4m when, feeding spoon 1 set four or five.The opening of described feeding spoon 1 and the section profile phase of case 4
Together, the gap between the opening for reducing feeding spoon 1 with this and case 4, so as to increase the amount of feeding each time, and reduces raw material and exists
Residual in case 4.By setting what feeding spoon 1 can be formed during rotary kiln is rotated using side plate 13 and baffle plate 12
Space is automatic to be added to inside rotary kiln raw material from case 4, and automation charging is easy to implement with this, is conducive to improving production
Efficiency simultaneously reduces the labour intensity of staff, can also disperse raw material by setting lifting blade 14, it is to avoid caking, is conducive to
The degree of scatter after raw material enter rotary kiln inside is improved, so that raw material heating surface area increases, is conducive to raising to burn till
Efficiency, shortening burns till the required time, improves the utilization rate of the energy.In the present embodiment, the part that other are not described with it is above-mentioned
The content of embodiment is identical, therefore does not repeat.
Embodiment 3：
On the basis of above-described embodiment, in the present embodiment, be provided with the inwall of described cylinder of rotary kiln several with it is outer
The material guiding hopper 2 that side material guide structure is corresponded and connected.Described material guiding hopper 2 is designed as tubulose.The life being collected into by feeding spoon 1
Material can control raw material to enter inside rotary kiln by being entered into material guiding hopper 2 after feeding spoon 1 by setting material guiding hopper 2
Direction, is conducive to avoiding raw material from situation about piling up occur after entering rotary kiln inside, it is to avoid raw material are heated uneven and reduce and burn
Into efficiency or time for burning till of increase.In the present embodiment, the part that other are not described is identical with the content of above-described embodiment, therefore
Do not repeat.
Embodiment 4：
On the basis of above-described embodiment, in the present embodiment, described material guiding hopper 2 is inclined along rotary kiln rotation direction reversed and set
Put.It is easy to disperse raw material with this, it is to avoid situation about piling up occur in raw material, additionally it is possible to by the top in raw material conveyor to rotary kiln
Space, so as to improve the space availability ratio inside rotary kiln, is conducive to increasing the heating surface area of raw material, improves the utilization of the energy
Rate.
As shown in Fig. 5, Fig. 6, Fig. 7, on the basis of above-described embodiment, in the present embodiment, described material guiding hopper 2 is close to back
The side of rotary kiln cylinder offers sub-material mouthful 21, and can increase raw material with this exports, it is to avoid raw material occur stifled in material guiding hopper 2
Plug.The outlet of material guiding hopper 2 is provided with cutting plate 22, and the direction that cutting plate 22 circulates with raw material is be arranged in parallel, and raw material can be made with this
Dispersion circulation, it is to avoid situation about piling up occur in raw material.In the present embodiment, the content of the part that other are not described and above-described embodiment
It is identical, therefore do not repeat.
Embodiment 5：
On the basis of above-described embodiment, in the present embodiment, described outside material guide structure is evenly distributed on concentric with rotary kiln
Circumference on.During work, can make outside material guide structure that uniformly raw material are sent to inside rotary kiln, be easy to control each time
The time interval of feeding, is advantageously implemented automated production and continuous production.And also space availability ratio can be improved so that it is raw
Material can uniformly cause to be heated evenly in rotary kiln inner dispersion.In the present embodiment, the part that other are not described and above-mentioned reality
The content for applying example is identical, therefore does not repeat.
Embodiment 6：
On the basis of above-described embodiment, in the present embodiment, sealing knot is provided between described cylinder of rotary kiln and case 4
Structure, described sealing structure includes the A sealing structures being arranged on cylinder of rotary kiln and is arranged on case 4 and is sealed with A to tie
The B sealing structures that structure is relatively rotated.By setting sealing structure, debris can be avoided from entering into inside the present invention, it is also possible to anti-
Only raw material spill and cause environmental pollution and waste of material, and A sealing structures is relatively rotated with B sealing structures can also avoid hair
Raw interference.In the present embodiment, the part that other are not described is identical with the content of above-described embodiment, therefore does not repeat.
Embodiment 7：
As shown in Fig. 2 on the basis of above-described embodiment, in the present embodiment, described A sealing structures include being arranged on rotary kiln
Barrel support ring 7 on cylinder and it is tightly connected with barrel support ring 6 and the middle ring 7 with annular groove；B sealing structure bags
Include the case sealing ring 8 for being arranged on case 4 and being tightly connected with the annular groove of middle ring 7.With this can make middle ring 7 with
There is certain displacement in case sealing ring 8, so as to occur expanding with heat and contract with cold in rotary kiln, alignment error, normal work when axial reciprocating
Move and cause when radially wobbling with the phenomenon such as axial float, it is ensured that sealing property is not affected, and can effectively prevent kiln
Ash or raw material are leaked, and by setting middle ring 7, it can be changed after the abrasion of middle ring 7, so as to reduce dimension
The cost of shield.In the present embodiment, the part that other are not described is identical with the content of above-described embodiment, therefore does not repeat.
Embodiment 8：
On the basis of above-described embodiment, in the present embodiment, peace is provided between described sealing structure and outside material guide structure
Baffle plate on case 4.Obstruct can be played a part of by setting baffle plate, so as to prevent raw material or kiln ash from entering into sealing
Inside configuration and cause the abrasion of sealing structure to aggravate, be conducive to extend sealing structure service life, reduce safeguard cost.
In the present embodiment, the part that other are not described is identical with the content of above-described embodiment, therefore does not repeat.
Embodiment 9：
On the basis of above-described embodiment, in the present embodiment, described case 4 is annular, and described case 4 uses four four
/ mono- annulus is spliced, and its internal case sealing ring 8 is also a quarter annulus, and sealed connecting component 9 is passed through during installation
It is connected and sealed, it is the common knowledge of those skilled in the art that sealed connecting component 9 obtains concrete structure, therefore is not repeated.Described
Charge door 3 and the supporting construction 5 for supporting case 4 are provided with case 4, described supporting construction 5 uses the shape of support frame
Formula is supported, and case 4 is supported by supporting construction 5, is allowed to be coaxially disposed with rotary kiln.Inspection is provided with described case 4
Door 10, is easy to observe the inner case of case 4 with this.In the present embodiment, in the part that other are not described and above-described embodiment
Appearance is identical, therefore does not repeat.
The above, is only presently preferred embodiments of the present invention, not does any formal limitation to the present invention, it is every according to
Any simple modification, the equivalent variations made to above example according to technical spirit of the invention, each fall within protection of the invention
Within the scope of.
Claims (10)
1. a kind of kilndust returned to calcining zone device, it is characterised in that：Including the case being arranged in a ring on the outside of cylinder of rotary kiln（4）, set
Put on the outside of cylinder of rotary kiln and connect inside cylinder of rotary kiln and case（4）Outside material guide structure, cylinder of rotary kiln with cover
Shell（4）Rotate connection.
2. a kind of kilndust returned to calcining zone device according to claim 1, it is characterised in that：If described outside material guide structure includes
Feeding spoon of the dry opening towards cylinder of rotary kiln rotation direction（1）Feeding spoon is arranged on several（1）Interior lifting blade
（14）；Described feeding spoon includes base plate identical with cylinder of rotary kiln outer surface profile and being connected with cylinder of rotary kiln（11）、
With base plate（11）The baffle plate of connection（12）Be arranged on base plate（11）Both sides and and baffle plate（12）The side plate of connection（13）；Described
Lifting blade（14）It is arranged on two side plates（13）Between；Described base plate（11）On be provided with and connected with cylinder of rotary kiln inside
Opening.
3. a kind of kilndust returned to calcining zone device according to claim 1 and 2, it is characterised in that：Described cylinder of rotary kiln it is interior
Several material guiding hoppers for corresponding and connecting with outside material guide structure are provided with wall（2）；Described material guiding hopper（2）It is designed as
Tubulose.
4. a kind of kilndust returned to calcining zone device according to claim 3, it is characterised in that：Described material guiding hopper（2）Along rotary kiln
Rotation direction reversed is obliquely installed.
5. a kind of kilndust returned to calcining zone device according to claim 4, it is characterised in that：Described material guiding hopper（2）Near revolution
The side of kiln cylinder body offers sub-material mouthful（21）；Material guiding hopper（2）Outlet be provided with cutting plate（22）.
6. a kind of kilndust returned to calcining zone device according to any one of claim 1,2,4,5, it is characterised in that：Described outside
Material guide structure is evenly distributed on the circumference concentric with rotary kiln.
7. a kind of kilndust returned to calcining zone device according to claim 6, it is characterised in that：Described cylinder of rotary kiln and case
（4）Between be provided with sealing structure, described sealing structure includes the A sealing structures being arranged on cylinder of rotary kiln and is arranged on
The B sealing structures relatively rotated on case and with A sealing structures.
8. a kind of kilndust returned to calcining zone device according to claim 7, it is characterised in that：Described A sealing structures include setting
Barrel support ring on cylinder of rotary kiln（6）And with barrel support ring（6）It is tightly connected and the middle ring with annular groove
（7）；B sealing structures include being arranged on case（4）It is upper and with middle ring（7）The case sealing ring that is tightly connected of annular groove
（8）.
9. a kind of kilndust returned to calcining zone device according to claim 8, it is characterised in that：Described sealing structure and outside guide
The baffle plate on case is provided between structure.
10. a kind of kilndust returned to calcining zone device according to any one of claim 1,2,4,5,7,8,9, it is characterised in that：Institute
The case stated（4）It is annular；Described case（4）On be provided with charge door（3）With for supporting case（4）Supporting construction
（5）；Inspection door is provided with described case（10）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710277985.6A CN106931775A (en) | 2017-04-25 | 2017-04-25 | A kind of kilndust returned to calcining zone device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710277985.6A CN106931775A (en) | 2017-04-25 | 2017-04-25 | A kind of kilndust returned to calcining zone device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106931775A true CN106931775A (en) | 2017-07-07 |
Family
ID=59437113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710277985.6A Pending CN106931775A (en) | 2017-04-25 | 2017-04-25 | A kind of kilndust returned to calcining zone device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106931775A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB155240A (en) * | 1919-12-08 | 1921-09-22 | American Metal Co Ltd | Rotary kilns |
| GB926545A (en) * | 1959-04-02 | 1963-05-22 | Elektrokemisk As | Improvements relating to processes for the reduction of materials in a rotary kiln |
| US20030205175A1 (en) * | 2002-05-02 | 2003-11-06 | Wiedenhoft Charles T. | Method and apparatus for using metallurgical slag in cement clinker production |
| CN102589278A (en) * | 2012-03-01 | 2012-07-18 | 中冶赛迪工程技术股份有限公司 | Rotary kiln |
| JP2016038116A (en) * | 2014-08-05 | 2016-03-22 | 日工株式会社 | Particulate matter heat treatment equipment and treatment method |
| CN206648462U (en) * | 2017-04-25 | 2017-11-17 | 四川卡森科技有限公司 | A kind of kilndust returned to calcining zone device |
-
2017
- 2017-04-25 CN CN201710277985.6A patent/CN106931775A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB155240A (en) * | 1919-12-08 | 1921-09-22 | American Metal Co Ltd | Rotary kilns |
| GB926545A (en) * | 1959-04-02 | 1963-05-22 | Elektrokemisk As | Improvements relating to processes for the reduction of materials in a rotary kiln |
| US20030205175A1 (en) * | 2002-05-02 | 2003-11-06 | Wiedenhoft Charles T. | Method and apparatus for using metallurgical slag in cement clinker production |
| CN102589278A (en) * | 2012-03-01 | 2012-07-18 | 中冶赛迪工程技术股份有限公司 | Rotary kiln |
| JP2016038116A (en) * | 2014-08-05 | 2016-03-22 | 日工株式会社 | Particulate matter heat treatment equipment and treatment method |
| CN206648462U (en) * | 2017-04-25 | 2017-11-17 | 四川卡森科技有限公司 | A kind of kilndust returned to calcining zone device |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170707 |
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| RJ01 | Rejection of invention patent application after publication |