CN206330432U - It is a kind of to eliminate the process structure that Mialz lime kiln runs wind - Google Patents
It is a kind of to eliminate the process structure that Mialz lime kiln runs wind Download PDFInfo
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- CN206330432U CN206330432U CN201621486403.2U CN201621486403U CN206330432U CN 206330432 U CN206330432 U CN 206330432U CN 201621486403 U CN201621486403 U CN 201621486403U CN 206330432 U CN206330432 U CN 206330432U
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- limekiln
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- 235000008733 Citrus aurantifolia Nutrition 0.000 title claims abstract description 50
- 235000011941 Tilia x europaea Nutrition 0.000 title claims abstract description 50
- 239000004571 lime Substances 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 39
- 239000002184 metal Substances 0.000 claims abstract description 31
- 229910052751 metal Inorganic materials 0.000 claims abstract description 31
- 238000003466 welding Methods 0.000 claims abstract description 15
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000007921 spray Substances 0.000 claims abstract description 8
- 239000003973 paint Substances 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 76
- 239000010959 steel Substances 0.000 claims description 76
- 238000007789 sealing Methods 0.000 claims description 72
- 230000008030 elimination Effects 0.000 claims description 12
- 238000003379 elimination reaction Methods 0.000 claims description 12
- 238000005728 strengthening Methods 0.000 claims description 10
- 230000002787 reinforcement Effects 0.000 claims description 6
- 238000004873 anchoring Methods 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 210000001320 hippocampus Anatomy 0.000 abstract 1
- 230000008961 swelling Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 11
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 6
- 239000011449 brick Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000007664 blowing Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- 208000035126 Facies Diseases 0.000 description 2
- 241000209140 Triticum Species 0.000 description 2
- 235000021307 Triticum Nutrition 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000001934 delay Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011094 fiberboard Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Abstract
The process structure that Mialz lime kiln runs wind is eliminated the utility model discloses a kind of, belongs to metallurgical technology technical field, it is intended to solve Maers Kiln subiculum and iris out the race wind phenomenon that existing abrasion deformation is caused.A kind of process structure for eliminating Mialz lime kiln race wind of the present utility model, including metal supporting plate, strengthen gusset, Y types anchoring piece, High-Alumina spray paint, fibrofelt, wherein, backing ring is from the next segment distance of beams of concrete under kiln body, metal baffle is enclosed in welding one, and two ring metal anchorages are welded in baffle plate upper surface, and one layer of fibrofelt is pasted on kiln shell, then a kind of High-Alumina spray paint of high intensity is selected, is sealed.Swelling stress can be eliminated by process units of the present utility model, and can preferably be sealed, eliminate and run wind phenomenon.
Description
Technical field
The utility model belongs to metallurgical technology field, more particularly to a kind of process structure for eliminating Mialz lime kiln race wind.
Background technology
Wheat Wurz MAERZ lime kiln belongs to one of state-of-the-art lime calcining equipment in the world, and its heat utilization rate is high, behaviour
Make it is simple, have a safety feature, environment protecting it is excellent.But Mialz lime kiln is built up after putting into production, after typically producing 2 years,
Abrasion deformation occurs in kiln body backing ring bottom box hat, causes to run wind, due to the defect of structure type, it is impossible to repaiied in outside
Mend, and in-furnace temperature is higher, can only stop production to overhaul；The kiln lining material used at Maers Kiln interface channel is magnesia brick, magnesia resistance to
The water-resistance of fiery material is poor, and fragility is big and toughness is not enough, and cooling after stopping production can cause the service life of magnesia fireproof liner to reduce,
And production suspension induced losses are caused, increase production maintenance cost, producer does not use which typically, while wind problem pollution environment is run,
Requirement is not reached in environmental protection.Run after wind and directly weld outside the body of limekiln, but in the mixed of Mialz lime kiln backing ring bottom
Exist between Xtah Crude Clay structure and kiln body and altered outside gap, high-temperature furnace gas, it is impossible to handled.
Chinese invention patent, publication number：103276130A, publication date：On September 4th, 2013, discloses a kind of blast-furnace hot-air
System pipeline runs wind method for maintaining, belongs to pipeline and runs wind process method.The invention will run at wind handled first, in refractory brick
On make a breach, then the steel plate prepared is sling in indentation, there along refractory brick inwall, high alumina castable is poured into a mould with shape along steel plate
Into the pouring layer equivalent to refractory brick, on pouring layer cover mechanism fiberboard after conduit enclosure is repaired, mud jacking.No
It is in place of foot：The invention still carries out blowing out to blast furnace to be repaired, is running the refractory brick progress outside wind pipeline to destruction
Repairing treatment, causes production suspension induced losses, increase production maintenance cost.
Utility model content
1. the utility model technical problem to be solved
For there is gap, high temperature between the concrete structure and kiln body of Mialz lime kiln backing ring bottom in the prior art
Furnace gas is altered outside, it is impossible to the problem of handling, and the utility model provides a kind of process structure for eliminating Mialz lime kiln race wind.It can
To avoid the race wind phenomenon caused by abrasion deformation occurs in kiln body bottom backing ring, it is unnecessary caused by running wind to reduce
Shutdown maintenance number of times, improves stove operating rate, reduces because of the economic loss that shutdown maintenance is brought.
2. technical scheme
To reach above-mentioned purpose, the technical scheme that the utility model is provided is：
It is a kind of to eliminate the process structure that Mialz lime kiln runs wind, including backing ring, limekiln housing and kiln body concrete branch
Support frame frame, the bottom of backing ring is connected with limekiln housing, and space is provided between limekiln housing and kiln body concrete support framework,
Also include sealing steel plate and fibrofelt, the circle sealing steel plate of limekiln hull outside connection one, hull outside and sealing in limekiln
Fibrofelt is provided between steel plate, sealing steel plate is located at below kiln body concrete support framework.
As shown in figure 1, circle position B is to run wind position in figure, along limekiln housing and kiln body concrete support framework
Between space, the direction of arrow for run wind direction, the race wind facies ratio with plane kiln body, be not easy to directly welding, if directly
Welding is needed from kiln body built-in function, but kiln body internal temperature is too high, it is necessary to blowing out is repaired, and delays production, causes the damage that stops production
Lose, with reference to Fig. 2, this is practical in the circle sealing steel plate of limekiln hull outside connection one, and the top of sealing steel plate is connected to kiln body
Concrete support lower frame, will run wind position and shuts, no longer run wind, solve the problem of wind is run at the position.
Limekiln housing needs to bear higher difference variation amount in itself, is also easy to produce thermal expansion phenomenon, if sealing steel plate
Directly it is connected with limekiln housing, the effect expanded with heat and contract with cold by limekiln housing, the phenomenon of secondary race wind can be produced, to eliminate
The phenomenon, the utility model is provided with fibrofelt between limekiln hull outside and sealing steel plate, eliminates the heat of limekiln housing
Expansion, it is to avoid produce the secondary possibility for running wind.
Preferably, also including metal anchorage, metal anchorage is welded on sealing steel plate, and metal anchorage is further right
Sealing steel plate plays anchorage effect, during Mialz lime kiln use, prevents what is brought by sealing steel plate performance itself
Secondary race wind.
Preferably, direction of the metal anchorage along limekiln housing, two rings, inside loop and outside loop are welded above sealing steel plate
Dislocation welding, the metal anchorage of inside loop and outside loop dislocation welding plays reinforcement anchorage effect to sealing steel plate body, enhances close
The firm performance of steel plate body is sealed, is further obviated because of the secondary race wind phenomenon that sealing steel plate performance itself is brought.
Preferably, from spraying High-Alumina spraying between kiln body concrete support framework, metal anchorage and sealing steel plate
Wind position is run in material, further sealing.
Preferably, also strengthen gusset including strengthening gusset and be arranged between sealing steel plate and limekiln housing, along lime
The circumferencial direction of kiln shell body sets one to enclose, and strengthens gusset and further strengthens sealing the steadiness that steel plate is connected with limekiln housing,
The sealing property of increase sealing steel plate, prevents that sealing steel plate by force departs from kiln body concrete support framework or limekiln housing, it is ensured that
Thoroughly solve the problems, such as to run wind, extend service life of the present utility model.
Preferably, the section for strengthening gusset is right angled triangle, and a right-angle side for strengthening gusset is connected with sealing steel plate,
Another right-angle side for strengthening gusset is connected with limekiln housing, the characteristic consolidated using triangle, increase sealing steel plate and stone
The steadiness of ash furnace housing connection, prevents from running wind.
Preferably, in the outside of backing ring provided with one layer of limekiln refractory lining, limekiln refractory lining plays guarantor to kiln body
Temperature effect.
Preferably, described limekiln housing is metal shell.
Preferably, metal anchorage is Y types.
A kind of Mialz lime kiln, including a kind of above-described process structure for eliminating Mialz lime kiln race wind, institute
The material of reinforcement gusset, sealing steel plate and the Y type anchoring pieces stated is Q235 steel.
3. beneficial effect
The technical scheme provided using the utility model, compared with prior art, is had the advantages that：
(1) a kind of process structure for eliminating Mialz lime kiln race wind of the present utility model, is welded on the housing of limekiln
Support reinforcing gusset is welded under one circle sealing steel plate, steel plate, is laid close to kiln shell position above one layer of fibrofelt, sealing steel plate
Y type anchoring pieces are welded, then inside loop and outside loop, dislocation welding sprays High-Alumina high intensity spray paint, this structure can effectively suppress
Wind phenomenon is run, the problem of race wind that unenclosed construction is caused before being avoided from structure pollutes environment；
(2) a kind of process structure for eliminating Mialz lime kiln race wind of the present utility model, also including metal anchorage, gold
Category anchoring piece is welded on sealing steel plate, and metal anchorage further plays anchorage effect to sealing steel plate, in wheat Wurz lime
During kiln use, prevent because of the secondary race wind that sealing steel plate performance itself is brought；
(3) it is of the present utility model it is a kind of eliminate the process structure that Mialz lime kiln runs wind, metal anchorage is along lime
The direction of kiln shell body, welds two rings, inside loop and outside loop dislocation welding, the metal anchors of inside loop and outside loop dislocation welding above sealing steel plate
Firmware plays reinforcement anchorage effect to sealing steel plate body, enhances the firm performance of sealing steel plate body, further obviates
The secondary race wind phenomenon brought by sealing steel plate performance itself；
(4) a kind of process structure for eliminating Mialz lime kiln race wind of the present utility model, also including strengthening gusset, strengthens
Gusset is arranged between sealing steel plate and limekiln housing, is set one to enclose along the circumferencial direction of limekiln housing, is strengthened gusset
Further strengthen the steadiness that sealing steel plate is connected with limekiln housing, the sealing property of increase sealing steel plate prevents strong sealing
Steel plate departs from kiln body concrete support framework or limekiln housing, it is ensured that thoroughly solves the problems, such as to run wind, extends of the present utility model
Service life；
(5) a kind of process structure for eliminating Mialz lime kiln race wind of the present utility model, it is straight to strengthen the section of gusset
Angle triangle a, right-angle side for strengthening gusset is connected with sealing steel plate, strengthens another right-angle side and lime kiln shell of gusset
Body is connected, the characteristic consolidated using triangle, the steadiness that increase sealing steel plate is connected with limekiln housing, prevents from running wind；
(6) a kind of process structure for eliminating Mialz lime kiln race wind of the present utility model, one is provided with the outside of backing ring
Layer limekiln refractory lining, limekiln refractory lining plays insulation effect to kiln body；
(7) a kind of process structure for eliminating Mialz lime kiln race wind of the present utility model, it is not necessary to which shutdown maintenance can
To solve the problems, such as to run wind, the shutdown maintenance expense of stove is eliminated, economic benefit is improved；
(8) a kind of process structure for eliminating Mialz lime kiln race wind of the present utility model, simple in construction, easy construction,
Cost of investment is low, while reducing the pollution to environment.
Brief description of the drawings
Fig. 1 is the schematic diagram before closure；
Fig. 2 is the utility model structural representation.
Label declaration in schematic diagram：
1st, kiln body concrete support framework；2nd, limekiln refractory lining；3rd, limekiln housing；5th, fibrofelt；6th, reinforcement
Plate；7th, metal anchorage；8th, steel plate is sealed.
Embodiment
To further appreciate that content of the present utility model, the utility model is made in conjunction with drawings and Examples to retouch in detail
State.
Embodiment 1
A kind of elimination Mialz lime kiln of the present embodiment runs the process structure of wind, including backing ring, limekiln housing 3 and kiln
Body concrete support frame 1, the bottom of backing ring is connected with limekiln housing 3, limekiln housing 3 and kiln body concrete support framework
Space is provided between 1, also including sealing steel plate 8 and fibrofelt 5, the circle sealing steel plate 8 of the outside of limekiln housing 3 connection one, in stone
Fibrofelt 5 is provided between the outside of ash furnace housing 3 and sealing steel plate 8, sealing steel plate 8 is located at the lower section of kiln body concrete support framework 1.
As shown in figure 1, circle position B is to run wind position in figure, along limekiln housing 3 and kiln body concrete support framework
Space between 1, the direction of arrow is runs the direction of wind, and the race wind facies ratio with plane kiln body is not easy to directly welding, if directly
Welding is needed from kiln body built-in function, but kiln body internal temperature is too high, it is necessary to blowing out is repaired, and delays production, causes the damage that stops production
Lose, with reference to Fig. 2, this is practical in the circle sealing steel plate 8 of the outside of limekiln housing 3 connection one, and sealing steel plate 8 is located at kiln body concrete
The lower section of support frame 1, will run wind position and shuts, no longer run wind, solve the problem of wind is run at the position.
Limekiln housing 3 itself needs to bear higher difference variation amount, is also easy to produce thermal expansion phenomenon, if sealing steel plate
8 are directly connected with limekiln housing 3, the effect expanded with heat and contract with cold by limekiln housing 3, can produce the phenomenon of secondary race wind, be
The phenomenon is eliminated, the utility model is provided with fibrofelt 5 between the outside of limekiln housing 3 and sealing steel plate 8, eliminates lime kiln shell
The thermal expansion of body 3, it is to avoid produce the secondary possibility for running wind.
Embodiment 2
A kind of elimination Mialz lime kiln of the present embodiment runs the process structure of wind, and similar to Example 1, difference exists
In：Also include metal anchorage 7, metal anchorage 7 is welded on sealing steel plate 8.Metal anchorage 7 is further to sealing steel plate
8 play anchorage effect, during Mialz lime kiln use, prevent because of the secondary race that sealing steel plate 8 performance itself is brought
Wind.
Embodiment 3
A kind of elimination Mialz lime kiln of the present embodiment runs the process structure of wind, and similar to Example 1, difference exists
In：Direction of the metal anchorage 7 along limekiln housing 3, in two rings of top welding of sealing steel plate 8, inside loop and outside loop dislocation welding.
7 pairs of sealing bodies of steel plate 8 of metal anchorage of inside loop and outside loop dislocation welding play reinforcement anchorage effect, enhance close
The firm performance of the body of steel plate 8 is sealed, is further obviated because of the secondary race wind phenomenon that sealing steel plate 8 performance itself is brought.
Embodiment 4
A kind of elimination Mialz lime kiln of the present embodiment runs the process structure of wind, and similar to Example 1, difference exists
In：High-Alumina spray paint is being sprayed between kiln body concrete support framework 1, metal anchorage 7 and sealing steel plate 8, is entering one
Wind position is run in step sealing.The specific physical and chemical index of high alumina spray paint see the table below：
The high alumina spray paint physical and chemical index of table 1
Embodiment 5
A kind of elimination Mialz lime kiln of the present embodiment runs the process structure of wind, and similar to Example 1, difference exists
In：Also include strengthening gusset 6, strengthen gusset 6 and be arranged between sealing steel plate 8 and limekiln housing 3, along limekiln housing 3
Circumferencial direction set one enclose.
Strengthen gusset 6 and further strengthen the steadiness that sealing steel plate 8 is connected with limekiln housing 3, increase sealing steel plate 8
Sealing property, prevents that sealing steel plate 8 by force departs from kiln body concrete support framework 1 or limekiln housing 3, it is ensured that thoroughly solve to run wind
Problem, extends service life of the present utility model.
Embodiment 6
A kind of elimination Mialz lime kiln of the present embodiment runs the process structure of wind, and similar to Example 1, difference exists
In：The section for strengthening gusset 6 is right angled triangle, and a right-angle side for strengthening gusset 6 is connected with sealing steel plate 8, strengthens gusset 6
Another right-angle side be connected with limekiln housing 3, the characteristic consolidated using triangle, increase sealing steel plate 8 and lime kiln shell
The steadiness that body 3 is connected, prevents from running wind.
Embodiment 7
A kind of elimination Mialz lime kiln of the present embodiment runs the process structure of wind, and similar to Example 1, difference exists
In：In the outside of backing ring provided with one layer of limekiln refractory lining 2, limekiln refractory lining 2 plays insulation effect to kiln body.
Embodiment 8
A kind of elimination Mialz lime kiln of the present embodiment runs the process structure of wind, and similar to Example 1, difference exists
In：Described limekiln housing 3 is metal shell.
Embodiment 9
A kind of elimination Mialz lime kiln of the present embodiment runs the process structure of wind, and similar to Example 1, difference exists
In：Metal anchorage 7 is Y types.
Embodiment 10
A kind of Mialz lime kiln of the present embodiment, including a kind of elimination Mialz lime kiln race described in embodiment 1-9
The process structure of wind, wherein, it is Q235 steel to strengthen gusset 6, sealing steel plate 8 and the equal material of metal anchorage 7.
Claims (9)
1. a kind of eliminate the process structure that Mialz lime kiln runs wind, including backing ring, limekiln housing (3) and kiln body concrete branch
Support frame frame (1), the bottom of backing ring is connected with limekiln housing (3), limekiln housing (3) and kiln body concrete support framework (1)
Between be provided with space, it is characterised in that also including sealing steel plate (8) and fibrofelt (5), one is connected on the outside of limekiln housing (3)
Circle sealing steel plate (8), is provided with fibrofelt (5) on the outside of limekiln housing (3) between sealing steel plate (8), seals steel plate (8) position
Below kiln body concrete support framework (1).
2. a kind of process structure for eliminating Mialz lime kiln race wind according to claim 1, it is characterised in that：Also include
Metal anchorage (7), metal anchorage (7) is welded on sealing steel plate (8).
3. a kind of process structure for eliminating Mialz lime kiln race wind according to claim 2, it is characterised in that：Metal anchors
Direction of the firmware (7) along limekiln housing (3), two rings of welding above sealing steel plate (8), inside loop and outside loop dislocation welding.
4. a kind of elimination Mialz lime kiln according to Claims 2 or 3 runs the process structure of wind, it is characterised in that：
High-Alumina spray paint is sprayed between kiln body concrete support framework (1), metal anchorage (7) and sealing steel plate (8).
5. a kind of process structure for eliminating Mialz lime kiln race wind according to claim 1, it is characterised in that：Also include
Strengthen gusset (6), strengthen gusset (6) and be arranged between sealing steel plate (8) and limekiln housing (3), along limekiln housing (3)
Circumferencial direction set one enclose.
6. a kind of process structure for eliminating Mialz lime kiln race wind according to claim 5, it is characterised in that：Reinforcement
The section of plate (6) is right angled triangle, and a right-angle side for strengthening gusset (6) is connected with sealing steel plate (8), strengthens gusset (6)
Another right-angle side be connected with limekiln housing (3).
7. a kind of process structure for eliminating Mialz lime kiln race wind according to claim 1, it is characterised in that：In backing ring
Outside provided with one layer of limekiln refractory lining (2).
8. a kind of elimination Mialz lime kiln according to claim 1 or 7 runs the process structure of wind, it is characterised in that：Institute
The limekiln housing (3) stated is metal shell.
9. a kind of process structure for eliminating Mialz lime kiln race wind according to claim 2, it is characterised in that：Metal anchors
Firmware (7) is Y types.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621486403.2U CN206330432U (en) | 2016-12-31 | 2016-12-31 | It is a kind of to eliminate the process structure that Mialz lime kiln runs wind |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621486403.2U CN206330432U (en) | 2016-12-31 | 2016-12-31 | It is a kind of to eliminate the process structure that Mialz lime kiln runs wind |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206330432U true CN206330432U (en) | 2017-07-14 |
Family
ID=59294533
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621486403.2U Expired - Fee Related CN206330432U (en) | 2016-12-31 | 2016-12-31 | It is a kind of to eliminate the process structure that Mialz lime kiln runs wind |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110590195A (en) * | 2019-10-09 | 2019-12-20 | 新疆中泰矿冶有限公司 | Method for increasing yield and efficiency of Maerz lime kiln |
| CN112062483A (en) * | 2020-09-08 | 2020-12-11 | 马鞍山钢铁股份有限公司 | Structure for preventing air leakage at upper part of unloading platform of Maerz kiln |
| CN112414108A (en) * | 2020-12-04 | 2021-02-26 | 广西柳钢新材料科技有限公司 | Sealing device for ash-discharging conical hopper of Maerz kiln |
-
2016
- 2016-12-31 CN CN201621486403.2U patent/CN206330432U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110590195A (en) * | 2019-10-09 | 2019-12-20 | 新疆中泰矿冶有限公司 | Method for increasing yield and efficiency of Maerz lime kiln |
| CN112062483A (en) * | 2020-09-08 | 2020-12-11 | 马鞍山钢铁股份有限公司 | Structure for preventing air leakage at upper part of unloading platform of Maerz kiln |
| CN112062483B (en) * | 2020-09-08 | 2022-01-25 | 马鞍山钢铁股份有限公司 | Structure for preventing air leakage at upper part of unloading platform of Maerz kiln |
| CN112414108A (en) * | 2020-12-04 | 2021-02-26 | 广西柳钢新材料科技有限公司 | Sealing device for ash-discharging conical hopper of Maerz kiln |
| CN112414108B (en) * | 2020-12-04 | 2023-01-06 | 广西柳钢新材料科技有限公司 | Sealing device for ash discharge conical hopper of Maerz kiln |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20170714 |