CN105821203A - Dismounting and mounting device of raking arm for molybdenum concentrate roasting multi-hearth furnace and dismounting and mounting method - Google Patents
Dismounting and mounting device of raking arm for molybdenum concentrate roasting multi-hearth furnace and dismounting and mounting method Download PDFInfo
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- CN105821203A CN105821203A CN201610376080.XA CN201610376080A CN105821203A CN 105821203 A CN105821203 A CN 105821203A CN 201610376080 A CN201610376080 A CN 201610376080A CN 105821203 A CN105821203 A CN 105821203A
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- rake arms
- rod
- counterweight
- hearth furnace
- connecting pin
- Prior art date
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- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910052750 molybdenum Inorganic materials 0.000 title claims abstract description 26
- 239000011733 molybdenum Substances 0.000 title claims abstract description 26
- 239000012141 concentrate Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000001354 calcination Methods 0.000 claims description 20
- 239000000725 suspension Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 210000000515 tooth Anatomy 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- BIOOACNPATUQFW-UHFFFAOYSA-N calcium;dioxido(dioxo)molybdenum Chemical compound [Ca+2].[O-][Mo]([O-])(=O)=O BIOOACNPATUQFW-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 description 1
- QXYJCZRRLLQGCR-UHFFFAOYSA-N molybdenum(IV) oxide Inorganic materials O=[Mo]=O QXYJCZRRLLQGCR-UHFFFAOYSA-N 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a dismounting and mounting device of a raking arm for a molybdenum concentrate roasting multi-hearth furnace. The device comprises a quick dismounting rod for dismounting and mounting a connecting pin between the raking arm and a center shaft, a clamping device for taking out and feeding the raking arm from and in a high-temperature multi-hearth furnace, and a traction mechanism; the quick dismounting rod includes a rod body; a U-shaped joint matched with the connecting pin is arranged at one end of the machine body, and a handle perpendicular to the rod body is arranged at the other end; the clamping device comprises a counterweight beam; a dovetail plate clamped with the raking arm is arranged at one end of the counterweight beam, and the other end is movably connected with a steering rod; a counterweight tray is suspended at the lower part of the steering rod through a pull rod; a counterweight is put in the counterweight tray; the traction mechanism is connected with the counterweight beam through a guide chain; and meanwhile, the invention discloses a dismounting and mounting method of the raking arm for the molybdenum concentrate roasting multi-hearth furnace. The device largely reduces the replacement time of the raking arm, effectively improves the operation efficiency of multi-hearth furnace roasting equipment, and provides the technical support for advancement and improvement of a multi-hearth furnace roasting technology.
Description
Technical field
The invention belongs to non-ferrous metallurgy technology field, especially relate to a kind of calcining molybdenum ore concentrate multiple hearth furnace rake arms and remove and install device and remove and install method.
Background technology
Existing calcining molybdenum ore concentrate technique mainly has reverberatory furnace roasting technique, rotary kiln baking technique, multiple hearth furnace roasting technique and fluidized bed furnace roasting technique.Reverberatory furnace baking modes small investment, instant effect, easily operate, but, mechanization degree is low, and labor intensity is big, and molybdenum loss is many, and discontinuity goes out pan feeding, is the production technology of a kind of backwardness, seldom uses in large-scale production；Fluidized bed furnace roasting technique has the advantage that oxidation sweetening rate is high, and the smelting for sulphide ore produces, but range of application is limited to；Rotary kiln baking mode small investment, equipment and technique are simple, but, production capacity is little, and converter life is short, and productivity ratio is low, and calcining contains MoO2Height, affects extraction ratio and the molybdenum soluble rate of follow-up Ammonia leaching molybdenum；Multiple hearth furnace baking modes structure is relatively simple, and mechanization degree is high, and production capacity is big, and desulfurized effect is good, and product quality is high, and calcining sulfur content is low, is current domestic and international application most commonly used calcining molybdenum ore concentrate technique.And use multiple hearth furnace calcining molybdenum concentrate, lead concentrate, copper concentrate etc. to be increasingly becoming main flow both at home and abroad.To this end, improve the maintenance of multiple hearth furnace equipment, reduce equipment fault and there is profound significance.
In multiple hearth furnace calcining molybdenum concentrate technique, multiple hearth furnace is typically by 8～16 layers, and every layer of tilting rake arms having four and furnace bottom keeping parallelism, rake arms is to be connected with axis by the connecting pin of a high intensity, and every rake arms has some rake teeths.During roasting, molybdenum concntrate is added ground floor by furnace roof, and passes sequentially through each layer of stove under the stirring of every layer of rake arms rake teeth, and final products are discharged by bottom.In actual production, rake arms can cause irregular breakage phenomenon because of reasons such as castability, service life, applying working conditions, if changing not in time, will cause that product is defective, solid accumulation, cleaning difficulty increase, causing the damage of the key position such as reductor, siege what is more.Need frequent shutdown maintenance, bring many adverse effects to equipment and production.And multiple hearth furnace is continuous dosing, Sequential Production, stop the most for a long time, in molybdenum concntrate containing calcium, phosphorus, copper etc. impurity, the multiple molybdate such as the high viscosity calcium molybdate generated in high temperature environments, calcium phosphate can harden at siege and the position such as rake arms, axis, causes the loss that cannot retrieve.
Summary of the invention
In order to solve the problems referred to above, it is an object of the invention to provide a kind of calcining molybdenum ore concentrate multiple hearth furnace rake arms and remove and install device and remove and install method, it can efficiently change damage rake arms in the case of multiple hearth furnace roasting apparatus is not parking.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of calcining molybdenum ore concentrate multiple hearth furnace rake arms removes and installs device, and it includes the Quick release for the connecting pin between rake arms and axis is dismantled, installed operation and for rake arms carries out taking out from high temperature multiple hearth furnace, sending into clamping apparatus and the haulage gear of operation；Described Quick release includes that the body of rod, body of rod one end are provided with the u shaped connector matched with connecting pin, and the other end is provided with the handle vertical with the body of rod；Described clamping apparatus includes counterweight beam, counterweight beam one end is provided with the coattail board of one and rake arms phase clamping, and the other end is connected with a tuning bar, and there is a counterweight pallet tuning bar bottom by pull bar suspention, being placed with balancing weight in counterweight pallet, haulage gear is connected with counterweight beam by guide chain.
Described calcining molybdenum ore concentrate multiple hearth furnace rake arms removes and installs device, and the body of rod of its Quick release is hollow tubular structures.
Described calcining molybdenum ore concentrate multiple hearth furnace rake arms removes and installs device, and its counterweight beam outer surface is set with connection sleeve pipe, connects and is provided with the suspension ring for connecting guide chain on sleeve pipe.
A kind of calcining molybdenum ore concentrate multiple hearth furnace rake arms removes and installs method, and it comprises the following steps:
(1), fractureed or the dismounting of connecting pin between the old rake arms and the axis that damage: the body of rod of Quick release is stretched in the burner hearth of multiple hearth furnace, the u shaped connector of body of rod one end is stuck on connecting pin, operator grip the handle of the body of rod other end, force vertical to connecting pin, can extract between old rake arms and axis smoothly by connecting pin；
(2), fractureed or the old rake arms damaged has been taken out in the burner hearth of multiple hearth furnace: be positioned at the haulage gear above counterweight beam and move horizontally, drive counterweight beam moves horizontally, the coattail board making counterweight beam one end inserts in the dovetail groove in old rake arms, after counterweight beam holds old rake arms, the weight of the balancing weight placed in adjusting counterweight pallet, counterweight beam two ends are made to reach balance, counterweight beam opposite direction is driven to move by haulage gear, old rake arms is pulled out, midway adjusts lifting point to below rake arms, can old rake arms be quickly removed；
(3), new rake arms loads in the burner hearth of multiple hearth furnace: inserted by the coattail board of counterweight beam one end in the dovetail groove in new rake arms, after counterweight beam holds new rake arms, the weight of the balancing weight placed in adjusting counterweight pallet, counterweight beam two ends are made to reach balance, haulage gear moves horizontally and makes new rake arms rise and fall smoothly and in major part entrance burner hearth, after entering burner hearth, the weight of the balancing weight placed in again adjusting counterweight pallet, to adjust lifting point, new rake arms is completely fed in burner hearth, the weight of the balancing weight placed in the most constantly adjusting counterweight pallet balances rake arms, and then new rake arms is sent directly into axis anastomotic site；
(4), the installation of the connecting pin between new rake arms and axis: the body of rod of Quick release is stretched in the burner hearth of multiple hearth furnace, the u shaped connector of body of rod one end is installed with connecting pin, operator grip the handle of the body of rod other end, force vertical to connecting pin, are inserted between new rake arms and axis by connecting pin.
Owing to using technical scheme as above, the present invention has a following superiority:
Calcining molybdenum ore concentrate multiple hearth furnace rake arms of the present invention removes and installs device, and its simple in construction is reasonable in design, it is simple to operation, low cost, easy to use, using effect is good, is substantially reduced rake arms replacing construction, alleviates the labor intensity of operator, it is simple to promote the use of.
Calcining molybdenum ore concentrate multiple hearth furnace rake arms of the present invention removes and installs method, it only fully achieved the equipment repair and maintenance in the case of shutdownvoltage in 30 minutes, reach good effect, there is feature safe efficient, simple to operate, efficiently the old rake arms fractureed in hot environment is taken out in time and new rake arms is installed, be effectively increased multiple hearth furnace roasting apparatus running rate, for multiple hearth furnace roasting technology progress improve provide technical support.
Accompanying drawing explanation
Fig. 1 is the structural representation of rake arms；
Fig. 2 is that the A of Fig. 1 is to profile；
Fig. 3 is the structural representation of Quick release；
Fig. 4 is the structural representation of clamping apparatus and haulage gear；
Fig. 5 is that Fig. 4 " B B " is to profile；
In figure: 1-connecting pin；2-pin-and-hole；3-rake arms；4-dovetail groove；5-U type joint；The 6-body of rod；7-handle；8-slide rail；9-haulage gear；10-guide chain；11-coattail board；12-suspension ring；13-connects sleeve pipe: 14-counterweight beam；15-tuning bar: 16-pull bar；17-counterweight pallet.
Detailed description of the invention
Below by drawings and Examples, technical scheme is described in further detail.
As shown in Fig. 1,2,3,4,5, this calcining molybdenum ore concentrate multiple hearth furnace rake arms removes and installs device, and it includes the Quick release for the connecting pin 1 between rake arms 3 and axis being dismantled, installed operation and for rake arms carries out taking out from high temperature multiple hearth furnace, sending into clamping apparatus and the haulage gear 9 of operation；Described Quick release includes that the body of rod 6, body of rod one end are provided with the u shaped connector 5 matched with connecting pin 1, and the other end is provided with the handle 7 vertical with the body of rod；Described clamping apparatus includes counterweight beam 14, counterweight beam one end is provided with the coattail board 11 of one and rake arms phase clamping, the other end is connected with a tuning bar 15, there is a counterweight pallet 17 tuning bar bottom by pull bar 16 suspention, being placed with balancing weight in counterweight pallet, haulage gear is connected with counterweight beam by guide chain 10.
The body of rod 6 of above-mentioned Quick release is hollow tubular structures.
Above-mentioned counterweight beam 14 outer surface is set with connection sleeve pipe 13, connects and is provided with the suspension ring 12 for connecting guide chain 10 on sleeve pipe.
Above-mentioned haulage gear 9 uses hoist engine.
Calcining molybdenum ore concentrate multiple hearth furnace rake arms of the present invention removes and installs method, and it includes step in detail below:
(1), fractureed or the dismounting of connecting pin between the old rake arms and the axis that damage: the body of rod 6 of Quick release is stretched in the burner hearth of multiple hearth furnace, the u shaped connector 5 of body of rod one end is stuck on connecting pin 1, operator grip the handle 7 of the body of rod other end, force vertical to connecting pin, can extract from the pin-and-hole 2 between old rake arms and axis smoothly by connecting pin；
(2), the old rake arms fractureed or damage is taken out in the burner hearth of multiple hearth furnace: is positioned at the haulage gear 9 above counterweight beam and moves horizontally on slide rail 8, counterweight beam 14 is driven to move horizontally, the coattail board 11 making counterweight beam one end inserts in the dovetail groove 4 in old rake arms, after counterweight beam holds old rake arms, the weight of the balancing weight placed in adjusting counterweight pallet 17, counterweight beam two ends are made to reach balance, counterweight beam opposite direction is driven to move by haulage gear, old rake arms is pulled out, midway adjusts lifting point to below rake arms, can will conduct oneself with dignity more than 300 jin in high temperature environments, old rake arms up to 2.7m passes through area less than 0.4m2Fire door quickly remove；
(3), new rake arms loads in the burner hearth of multiple hearth furnace: inserted by the coattail board of counterweight beam one end in the dovetail groove in new rake arms, after counterweight beam holds new rake arms, the weight of the balancing weight placed in adjusting counterweight pallet, counterweight beam two ends are made to reach balance, haulage gear moves horizontally and makes new rake arms rise and fall smoothly and in major part entrance burner hearth, after entering burner hearth, the weight of the balancing weight placed in again adjusting counterweight pallet, to adjust lifting point, new rake arms is completely fed in burner hearth, the weight of the balancing weight placed in the most constantly adjusting counterweight pallet balances rake arms, and then new rake arms is sent directly into axis anastomotic site；
(4), the installation of the connecting pin between new rake arms and axis: the body of rod of Quick release is stretched in the burner hearth of multiple hearth furnace, the u shaped connector of body of rod one end is installed with connecting pin, operator grip the handle of the body of rod other end, force vertical to connecting pin, are inserted between new rake arms and axis by connecting pin.
The foregoing is only the better embodiment of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (4)
1. calcining molybdenum ore concentrate multiple hearth furnace rake arms removes and installs a device, it is characterized in that: it includes the Quick release for the connecting pin between rake arms and axis is dismantled, installed operation and for rake arms carries out taking out from high temperature multiple hearth furnace, sending into clamping apparatus and the haulage gear of operation；Described Quick release includes that the body of rod, body of rod one end are provided with the u shaped connector matched with connecting pin, and the other end is provided with the handle vertical with the body of rod；Described clamping apparatus includes counterweight beam, counterweight beam one end is provided with the coattail board of one and rake arms phase clamping, and the other end is connected with a tuning bar, and there is a counterweight pallet tuning bar bottom by pull bar suspention, being placed with balancing weight in counterweight pallet, haulage gear is connected with counterweight beam by guide chain.
Calcining molybdenum ore concentrate multiple hearth furnace rake arms the most according to claim 1 removes and installs device, it is characterized in that: the body of rod of its Quick release is hollow tubular structures.
Calcining molybdenum ore concentrate multiple hearth furnace rake arms the most according to claim 1 removes and installs device, it is characterized in that: its counterweight beam outer surface is set with connection sleeve pipe, connects and is provided with the suspension ring for connecting guide chain on sleeve pipe.
4. remove and install a method by the rake arms removing and installing device enforcement described in any claim in claims 1 to 3, it is characterized in that: it comprises the following steps:
(1), fractureed or the dismounting of connecting pin between the old rake arms and the axis that damage: the body of rod of Quick release is stretched in the burner hearth of multiple hearth furnace, the u shaped connector of body of rod one end is stuck on connecting pin, operator grip the handle of the body of rod other end, force vertical to connecting pin, can extract between old rake arms and axis smoothly by connecting pin；
(2), fractureed or the old rake arms damaged has been taken out in the burner hearth of multiple hearth furnace: be positioned at the haulage gear above counterweight beam and move horizontally, drive counterweight beam moves horizontally, the coattail board making counterweight beam one end inserts in the dovetail groove in old rake arms, after counterweight beam holds old rake arms, the weight of the balancing weight placed in adjusting counterweight pallet, counterweight beam two ends are made to reach balance, counterweight beam opposite direction is driven to move by haulage gear, old rake arms is pulled out, midway adjusts lifting point to below rake arms, can old rake arms be quickly removed；
(3) in, new rake arms loads the burner hearth of multiple hearth furnace: the coattail board of counterweight beam one end is inserted in the dovetail groove in new rake arms, after counterweight beam holds new rake arms, the weight of the balancing weight placed in adjusting counterweight pallet, counterweight beam two ends are made to reach balance, haulage gear moves horizontally and makes new rake arms major part enter in burner hearth, after entering burner hearth, again adjust lifting point, new rake arms is completely fed in burner hearth, the weight of the balancing weight placed in the most constantly adjusting counterweight pallet balances rake arms, and then new rake arms is sent directly into axis anastomotic site；
(4), the installation of the connecting pin between new rake arms and axis: the body of rod of Quick release is stretched in the burner hearth of multiple hearth furnace, the u shaped connector of body of rod one end is installed with connecting pin, operator grip the handle of the body of rod other end, force vertical to connecting pin, are inserted between new rake arms and axis by connecting pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610376080.XA CN105821203B (en) | 2016-05-31 | 2016-05-31 | Calcining molybdenum ore concentrate multiple hearth furnace removes and installs device with rake arms and removes and installs method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610376080.XA CN105821203B (en) | 2016-05-31 | 2016-05-31 | Calcining molybdenum ore concentrate multiple hearth furnace removes and installs device with rake arms and removes and installs method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105821203A true CN105821203A (en) | 2016-08-03 |
| CN105821203B CN105821203B (en) | 2018-04-06 |
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| CN201610376080.XA Active CN105821203B (en) | 2016-05-31 | 2016-05-31 | Calcining molybdenum ore concentrate multiple hearth furnace removes and installs device with rake arms and removes and installs method |
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| CN (1) | CN105821203B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594755A (en) * | 2017-01-23 | 2017-04-26 | 中冶焦耐(大连)工程技术有限公司 | Hollow shaft structure of multi-layer furnace as well as dismounting tool and dismounting method for rabble arm and rabble teeth |
| CN107941035A (en) * | 2017-12-21 | 2018-04-20 | 中冶焦耐(大连)工程技术有限公司 | A kind of light calcined magnesia multilayer combustion stove combines rake tooth type rake arms with double-deck cooling |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202913000U (en) * | 2012-09-28 | 2013-05-01 | 宝钢工程技术集团有限公司 | Quick replacement tool for molten iron desulphurization stirring paddle |
| CN203695952U (en) * | 2013-12-17 | 2014-07-09 | 上海梅山钢铁股份有限公司 | Rapid replacing device of continuous-casting steel ladle long-nozzle bracket |
| CN205128912U (en) * | 2015-11-07 | 2016-04-06 | 武钢集团昆明钢铁股份有限公司 | Quick replacement immersion nozzle's fixing device |
| CN205774715U (en) * | 2016-05-31 | 2016-12-07 | 洛阳栾川钼业集团股份有限公司 | Calcining molybdenum ore concentrate multiple hearth furnace rake arms removes and installs device |
-
2016
- 2016-05-31 CN CN201610376080.XA patent/CN105821203B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202913000U (en) * | 2012-09-28 | 2013-05-01 | 宝钢工程技术集团有限公司 | Quick replacement tool for molten iron desulphurization stirring paddle |
| CN203695952U (en) * | 2013-12-17 | 2014-07-09 | 上海梅山钢铁股份有限公司 | Rapid replacing device of continuous-casting steel ladle long-nozzle bracket |
| CN205128912U (en) * | 2015-11-07 | 2016-04-06 | 武钢集团昆明钢铁股份有限公司 | Quick replacement immersion nozzle's fixing device |
| CN205774715U (en) * | 2016-05-31 | 2016-12-07 | 洛阳栾川钼业集团股份有限公司 | Calcining molybdenum ore concentrate multiple hearth furnace rake arms removes and installs device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594755A (en) * | 2017-01-23 | 2017-04-26 | 中冶焦耐(大连)工程技术有限公司 | Hollow shaft structure of multi-layer furnace as well as dismounting tool and dismounting method for rabble arm and rabble teeth |
| CN106594755B (en) * | 2017-01-23 | 2019-01-11 | 中冶焦耐(大连)工程技术有限公司 | A kind of extracting tool and method for dismounting of the rake arms rake teeth of multihearth hollow shaft structure |
| CN107941035A (en) * | 2017-12-21 | 2018-04-20 | 中冶焦耐(大连)工程技术有限公司 | A kind of light calcined magnesia multilayer combustion stove combines rake tooth type rake arms with double-deck cooling |
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| Publication number | Publication date |
|---|---|
| CN105821203B (en) | 2018-04-06 |
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