CN207006866U - A kind of RKEF nickel alloys ore-smelting electric furnace feeding dust pelletizing system - Google Patents
A kind of RKEF nickel alloys ore-smelting electric furnace feeding dust pelletizing system Download PDFInfo
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- CN207006866U CN207006866U CN201720890686.5U CN201720890686U CN207006866U CN 207006866 U CN207006866 U CN 207006866U CN 201720890686 U CN201720890686 U CN 201720890686U CN 207006866 U CN207006866 U CN 207006866U
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- dust
- dust collection
- feed bin
- dedusting airduct
- collection cover
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Abstract
The utility model discloses a kind of RKEF nickel alloys ore-smelting electric furnace feeding dust pelletizing system, including kiln head cover；The lower end of kiln head cover has at least one feed opening, and the outer wall of feed opening is socketed with revolution calcining kiln blanking dust collection cover；The lower section of revolution calcining kiln blanking dust collection cover is provided with the hot material tank car that can be moved along the two-orbit being fixed on the floor face in electro-smelting workshop；The lower section of two-orbit is provided with multiple hot aggregate bins；The upper end of revolution calcining kiln blanking dust collection cover is evenly distributed with multiple dust collection cover suction ports centered on the axis of feed opening；The upper end of hot aggregate bin is additionally provided with feed bin suction port；Feeding dust pelletizing system also includes sack cleaner and dedusting airduct house steward, the other end of dedusting airduct house steward is connected by the first dedusting airduct branch pipe with dust collection cover suction port respectively, and the middle part pipeline section of dedusting airduct house steward is connected by the second dedusting airduct branch pipe with feed bin suction port respectively.The utility model is simple in construction, practical；Effectively solve the problems, such as flue dust collecting, greatly reduce sack cleaner air quantity.
Description
Technical field
The ore-smelting electric furnace field of RKEF nickel alloy smelting processes is the utility model is related to, specifically a kind of RKEF nickel closes
Gold mine electrothermal stove feeding dust pelletizing system.
Background technology
At present, for the pyrometallurgical smelting of nickel ore, most smelting processes used is revolution calcining kiln+electric furnaces in the world
Smelting process (Rotary Kiln Electric Furnace) abbreviation RKEF, this technology is advanced, flow is short, energy consumption is low,
Still there is the meaning of further investigation in long period from now on.
RKEF nickel-iron smeltings are used as raw material using lateritic nickel ore, anthracite (semi-coke) and lime stone (or dolomite) etc..Work
Skill flow is：Drying kiln is delivered to by belt feeder after lateritic nickel ore is broken, the lateritic nickel ore after drying be delivered to proportioning station with
Reducing agent and flux mix according to a certain ratio, and the material after mixing adds rotary kiln baking, prereduction forms high temperature calcining (750-
900 DEG C), it is discharged into by discharging opening below kiln head cover in hot material tank；Hot material tank is arranged on (heat on the transport vehicle with function of weighing
Batch can and transport vehicle are collectively referred to as hot material tank car), to transport and be added in the furnace roof hot aggregate bin of ferronickel electric furnace high temperature calcining, then
It is sent into by the tremie pipe below hot aggregate bin in ore-smelting electric furnace, power supply stove, which is smelted, to be used.Charging aperture is provided with above hot material tank, and is matched somebody with somebody
There is revolution operated pneumatic valve, for preventing high temperature calcining heat in hot material tank to scatter and disappear and flour dust overflow；Hot material tank lower exit port
Provided with pneumatic gate valve, only to being opened during furnace top bin material feeding.In smelting process, clinker periodically flows out from slag notch, uses
Water Quenching, clinker is rushed to slag bath, pulls outward transport after sedimentation out；Ferronickel water periodically from tapping hole flow out, direct pouring ingot or
It is heat-fed to refining plant.
In RKEF nickel iron smelting process, most of feedings using overhead revolution calcining kiln+rail mounted conveying hot material tank car
Form.In this feeding form, the high temperature calcining for turning round calcining kiln output is being added into ore-smelting electric furnace furnace roof by hot material tank car
During hot aggregate bin, each feed bin charging aperture is also a flue dust overfall, and charging aperture is multiple, and has hot material tank car expecting
Storehouse charging aperture back and forth passes through, thus can not be directed to each airborne dust point and set dust collection cover, so as to which flue dust is administered in time.Separately
Outside, because high temperature calcining granularity is small and dries, fume amount is big and flies away everywhere.Traditional method for smoke and dust treatment herein is：
" tunnel type " dust collection cover will be welded into steel plate above feed bin charging aperture, whole charging region be covered, in each feed bin charging aperture
A suction port is arranged above, the mouth that each gathers dust is connected to sack cleaner with pipeline.The problem of this way is present master
To be following three aspects：
1. because dust collection cover is very big, and hot material tank car will back and forth enter, closing space can not be formed, thus deduster can be inhaled
Enter a large amount of " wild wind ", cause deduster institute required airflow to increase severely, construction cost and operating cost are larger, it is most important that this to do
Method dust removing effects are unsatisfactory.
2. due to being airborne dust point during charging, below hot material tank car, suction port can only but be arranged on " tunnel type "
The top of dust collection cover, cause airborne dust point too remote apart from the distance between suction port, the flue dust of spilling can not be sucked away in time, be caused
Flue dust is elegant everywhere.
3. big " tunnel type " dust shield separates this sheaf space of meltshop, it is unfavorable for other operations, also makes
Sight, daylighting in workshop are greatly affected.
In summary, traditional " tunnel type " mode of gathering dust can not meet energy-saving and environmental protection, improve wanting for operating environment
Ask.
Utility model content
A kind of technical problem proposed according to the above, there is provided RKEF nickel alloys ore-smelting electric furnace feeding dust pelletizing system.
Using the aspiration of negative pressure in hot aggregate bin storehouse, feed bin charging aperture (airborne dust point) sets suction port nearby, avoid produce " wild wind " and in time
Produce subnormal ambient；The lower section of discharge nozzle seals the feed bin charging aperture of airborne dust using the annular cover plate of " height is adaptive "；Each
Suction port is pooled to dedusting airduct house steward by dedusting airduct branch pipe, finally enters sack cleaner.Quantity switch of air valve with it is corresponding
Feed point chain control, only opened when corresponding hot aggregate bin feeds.When being fed to hot aggregate bin, the through hole on annular cover plate
For passing through the high temperature calcining of whereabouts.Annular cover plate, cylindrical sleeve and discharge nozzle together close feed bin charging aperture, ring cover
Plate has " height is adaptive " property, can ensure in the case where each feed bin charging aperture setting height(from bottom) has certain deviation, can also incite somebody to action
Feed bin charging aperture covers tightly.Thus, ensure that " negative pressure, closed " environment in hot aggregate bin, ensure that flue dust is not excessive, dust removing effects from
It can so ensure, and the air quantity requirement for deduster can also substantially reduce.The target for saving environmental protection again is realized, so as to perfect
RKEF smelting processes.
The technological means that the utility model uses is as follows：
A kind of RKEF nickel alloys ore-smelting electric furnace feeding dust pelletizing system, including kiln head cover；
The sidewall upper of the kiln head cover has kiln hood import, and the lower end of the kiln head cover has at least one feed opening,
The outer wall of the feed opening is socketed with revolution calcining kiln blanking dust collection cover；
The upper end of the revolution calcining kiln blanking dust collection cover and the outer wall of the feed opening seal, and the revolution calcining kiln falls
Expect the open at its lower end of dust collection cover, the feed opening stretches into the revolution calcining kiln blanking dust collection cover, the revolution calcining kiln blanking
The lower section of dust collection cover is provided with the hot material tank car that can be moved along the two-orbit being fixed on the floor face in the electro-smelting workshop, institute
The upper end charging aperture for stating hot material tank car is provided with pneumatic blank-plate valve, and the lower end of the hot material tank car is provided with pneumatic gate valve, the gas
The lower end of dynamic push-pull valve is provided with discharge nozzle, and the lower section of the discharge nozzle is provided with annular cover plate, and the upper end of the annular cover plate is provided with
Cylindrical sleeve, the cylindrical sleeve are connected with the outer wall of the discharge nozzle, and the annular cover plate is provided with and the discharge nozzle
Corresponding through hole；
The lower section of the two-orbit is provided with multiple hot aggregate bins, and the upper end of the hot aggregate bin has a feed bin charging aperture or more
The feed bin charging aperture that the individual bearing of trend along the two-orbit is distributed, the upper end of the feed bin charging aperture is from the two of the two-orbit
Stretched out between individual track, the external diameter of the annular cover plate is more than the internal diameter of the feed bin charging aperture, and the lower end of the hot aggregate bin is set
There is the tremie pipe corresponding with the feed bin charging aperture；
The upper end of the revolution calcining kiln blanking dust collection cover is evenly distributed with multiple centered on the axis of the feed opening
Dust collection cover suction port；
The upper end of the hot aggregate bin is additionally provided with feed bin suction port；
The feeding dust pelletizing system also includes sack cleaner and dedusting airduct house steward, and the dedusting airduct house steward's is close
Air-valve is matched somebody with somebody in one end of the sack cleaner provided with cold wind, and the other end of the dedusting airduct house steward passes through the first dedusting wind respectively
Pipe branch pipe connects with the dust collection cover suction port, and the middle part pipeline section of the dedusting airduct house steward passes through the second dedusting airduct branch respectively
Pipe is connected with the feed bin suction port, and quantity switch of air valve is provided with the second dedusting airduct branch pipe.
Each corresponding feed point of the feed bin charging aperture, when the hot material tank car reaches a certain feed point, accordingly
The quantity switch of air valve open.
The oral area of the feed opening is provided with hydraulic fan-shaped valve, closes the hydraulic fan-shaped valve, it is possible to achieve short-term storing and
Pooling feature, when the number of the feed opening is two or more, the kiln head cover also acts as powder material-distributing action.
The outer wall labyrinth seal of the cylindrical sleeve and the discharge nozzle, the side wall of the cylindrical sleeve is provided with multiple
The elongated hole being vertically arranged, the outer wall of the discharge nozzle are provided with the circular steel column to match with the elongated hole.
The second dedusting airduct branch pipe include the long straight tube that is connected with the middle part pipeline section of the dedusting airduct house steward and with
The short tube of feed bin suction port connection, the quantity switch of air valve be located in the short tube, the long straight tube and the short tube it
Between be flexible coupling provided with airduct.
The outer of the annular cover plate has the upper seesaw of annular.
Under working condition, the hot material tank car is rested against immediately below the corresponding feed opening, opens the pneumatic blind plate
Valve, then, the hydraulic fan-shaped valve is opened, start to feed to the hot material tank car, this process, a certain amount of flue dust can be produced.
The discharging point of the feed opening is surround covering by the revolution calcining kiln blanking dust collection cover, and coordinates the dust collection cover suction port,
Substantially increase dust-collecting efficiency.The revolution calcining kiln blanking dust collection cover has sufficiently large volume, makes caused flue dust herein
It is fully accommodated in the revolution calcining kiln blanking dust collection cover without excessive；The upper end of the revolution calcining kiln blanking dust collection cover is equal
It is even that multiple dust collection cover suction ports are distributed with, the revolution calcining kiln blanking internal mask pressure that gathers dust can be made to be evenly distributed, and effectively subtract
Few " wild wind "；In addition, by the way of " inhaling on top ", dust of being more convenient for relatively is inhaled using side and absorbed.Again in view of herein blanking interval
Phase is short, using whole uninterrupted air draught dedusting.Therefore, airduct does not set quantity switch of air valve herein, directly imports the dedusting airduct
House steward.
When the material in the hot material tank car reaches setting value, the hydraulic fan-shaped valve is closed, stops blanking, turns off institute
Pneumatic blank-plate valve is stated, avoids the thermal loss and flour dust overflow of high temperature calcining in the hot material tank car.Now, high temperature roasting is filled
The hot material tank car of sand is stayed where one is, pending further orders, and can be run to the hot aggregate bin for needing material feeding and be fed for it at any time.
When some described hot aggregate bin needs charging, the hot material tank car for filling material starts, the institute to be fed to needs
Hot aggregate bin movement is stated, ensures to stop during feed bin charging aperture described in the discharge nozzle face, and opens the pneumatic gate valve, is started
The hot aggregate bin is fed.Now, because the high temperature calcining of whereabouts is poured in the hot aggregate bin, in the hot aggregate bin material position compared with
Low, drop is larger；In addition high temperature calcining granularity is small and dries, so, volume of smoke can be produced and sprayed from feed bin charging aperture, herein
It is the most important airborne dust point during electric furnace charging.The feed bin suction port is arranged on the feed bin charging aperture (airborne dust nearby
Point) near, quantity switch of air valve is provided with the second dedusting airduct branch pipe, each corresponding charging of the feed bin charging aperture
Point, when the hot material tank car reaches a certain feed point, the corresponding quantity switch of air valve is opened, and can not only be effectively reduced described
Sack cleaner air quantity, the feed bin charging aperture can be made nearby to produce stronger negative pressure again, it is excessive to flue dust to play interception.Separately
Outside, in order to prevent this to be in dust removal process, excessive high temperature calcining is siphoned away, the long straight tube design is longer, so as to graininess
Calcining falls back to the hot aggregate bin by gravity, not only reduces the risk that the sack cleaner burns cloth bag, it also avoid raw material
Waste.The airduct, which is flexible coupling, to be to compensate for pipeline and expands with heat and contract with cold caused thermal stress.In order to control the bag-type dust
The flue-gas temperature of device flue dust import, cold wind air distribution is provided with one end of the close sack cleaner of the dedusting airduct house steward
Valve.During charging of the hot material tank car to the hot aggregate bin, for the ease of controlling the parking of the hot material tank car during charging
Position, the feed bin charging aperture latus rectum are significantly larger than the discharge nozzle latus rectum, therefore, generate larger flue dust overflow channel.
Therefore, the utility model sets the annular cover plate that can be fluctuated in the lower section of the discharge nozzle, is overflow for closing flue dust herein
The passage gone out, flue dust during blanking is prevented to overflow.The upper end of the annular cover plate is provided with cylindrical sleeve, the cylindrical sleeve
With the outer wall labyrinth seal of the discharge nozzle, and due to the cooperation of the elongated hole and the circular steel column, the cylindrical shroud
Cylinder together with the annular cover plate can in the vertical direction " fluctuating ", therefore, above-mentioned annexation both meets seal request, again
The requirement of " fluctuating " can be met.The effect of " fluctuating " is to adapt to the high peace of each feed bin charging aperture top mark
Deviation is filled, preferably realizes seal request.By above-mentioned setting, natural airborne dust during blanking had both been prevented, has been the hot material again
Subnormal ambient is formed in storehouse and creates ideal conditions, makes to form " negative pressure " and " closed " environment in the hot aggregate bin, ensure that and remove
Dirt effect.
The setting of the upper seesaw of annular be in order to prevent the annular cover plate when being moved to the feed bin charging aperture, by
It is too low in position and be stuck in the feed bin charging aperture side wall, and play certain guide effect.
The utility model has advantages below：
1st, it is simple in construction, practical；
2nd, using effect is good；
3rd, effectively solves the problems, such as flue dust collecting；
4th, sack cleaner air quantity is greatly reduced；
5th, construction cost 1/3 is saved, operation power cost 1/2 is saved, reduces maintenance cost 1/3；
6th, small investment and power conservation requirement are realized while solving environmental issue.
The utility model can be widely popularized in fields such as dedustings for the foregoing reasons.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is done simply to introduce in description of the prior art, it should be apparent that, drawings in the following description are
Some embodiments of the utility model, for those of ordinary skill in the art, do not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of RKEF nickel alloys ore-smelting electric furnace feeding dust pelletizing system in specific embodiment of the present utility model
Front view.
Fig. 2 is Fig. 1 A-A to sectional view.
Fig. 3 is the enlarged diagram at feed bin charging aperture and discharge nozzle in specific embodiment of the present utility model.
Fig. 4 is a kind of RKEF nickel alloys ore-smelting electric furnace feeding dust pelletizing system in specific embodiment of the present utility model
Floor plan.
Embodiment
It is clearer to express the purpose, technical scheme and advantage of the utility model embodiment, below in conjunction with this
Accompanying drawing in utility model embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, and shows
So, described embodiment is the utility model part of the embodiment, rather than whole embodiments.Based in the utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made,
Belong to the scope of the utility model protection.
As Figure 1-Figure 4, a kind of RKEF nickel alloys ore-smelting electric furnace feeding dust pelletizing system, including kiln head cover 1；
The sidewall upper of the kiln head cover 1 has the import of kiln hood 2, and the lower end of the kiln head cover 1 has two feed openings 3,
The outer wall of the feed opening 3 is socketed with revolution calcining kiln blanking dust collection cover 4；
The upper end of the revolution calcining kiln blanking dust collection cover 4 and the outer wall of the feed opening 3 seal, the revolution calcining kiln
The open at its lower end of blanking dust collection cover 4, the feed opening 3 stretch into the revolution calcining kiln blanking dust collection cover 4, the revolution calcining kiln
The lower section of blanking dust collection cover 4 is provided with the hot material that can be moved along the two-orbit 6 being fixed on the floor face 5 in the electro-smelting workshop
Tank car 7, the upper end charging aperture of the hot material tank car 7 are provided with pneumatic blank-plate valve 8, and the lower end of the hot material tank car 7 is provided with pneumatic insert
Plate valve 9, the lower end of the pneumatic gate valve 9 are provided with discharge nozzle 10, and the lower section of the discharge nozzle 10 is provided with annular cover plate 11, described
The upper end of annular cover plate 11 is provided with cylindrical sleeve 12, and the cylindrical sleeve 12 is connected with the outer wall of the discharge nozzle 10, institute
State annular cover plate 11 and be provided with the through hole corresponding with the discharge nozzle 10；
The lower section of the two-orbit 6 is provided with multiple hot aggregate bins 13, and the upper end of the hot aggregate bin 13 has two along described pair
The feed bin charging aperture 14 of the bearing of trend distribution of track 6, two rails of the upper end of the feed bin charging aperture 14 from the two-orbit 6
Stretched out between road, the external diameter of the annular cover plate 11 is more than the internal diameter of the feed bin charging aperture 14, the lower end of the hot aggregate bin 13
Provided with the tremie pipe 15 corresponding with the feed bin charging aperture 14；
The upper end of the revolution calcining kiln blanking dust collection cover 4 is evenly distributed with more centered on the axis of the feed opening 3
Individual dust collection cover suction port；
The upper end of the hot aggregate bin 13 is additionally provided with feed bin suction port 16；
The feeding dust pelletizing system also includes sack cleaner 17 and dedusting airduct house steward 18, the dedusting airduct house steward 18
One end of the close sack cleaner 17 match somebody with somebody air-valve 19 provided with cold wind, the other end of the dedusting airduct house steward 18 leads to respectively
Cross the first dedusting airduct branch pipe 20 to connect with the dust collection cover suction port, the middle part pipeline section of the dedusting airduct house steward 18 leads to respectively
Cross the second dedusting airduct branch pipe 21 to connect with the feed bin suction port 16, opened in the second dedusting airduct branch pipe 21 provided with air quantity
Close valve 22.
The oral area of the feed opening 3 is provided with hydraulic fan-shaped valve 23.
The outer wall labyrinth seal of the cylindrical sleeve 12 and the discharge nozzle 10, the side wall of the cylindrical sleeve 12 are set
There are multiple elongated holes 24 being vertically arranged, the outer wall of the discharge nozzle 10 is provided with the circular steel column to match with the elongated hole 24
25。
The feed bin suction port 16 is on the symmetry axis between two feed bin charging apertures 14.
The second dedusting airduct branch pipe 21 includes the long straight tube connected with the middle part pipeline section of the dedusting airduct house steward 18
26 and the short tube 27 that is connected with the feed bin suction port 16, the quantity switch of air valve 22 be located in the short tube 27, the length is straight
It is flexible coupling 28 provided with airduct between pipe 26 and the short tube 27.
The outer of the annular cover plate 11 has the upper seesaw 29 of annular.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (5)
1. a kind of RKEF nickel alloys ore-smelting electric furnace feeding dust pelletizing system, it is characterised in that including kiln head cover；
The sidewall upper of the kiln head cover has kiln hood import, and the lower end of the kiln head cover has at least one feed opening, described
The outer wall of feed opening is socketed with revolution calcining kiln blanking dust collection cover；
The upper end of the revolution calcining kiln blanking dust collection cover and the outer wall of the feed opening are sealed, and the revolution calcining kiln blanking is received
The open at its lower end of dust hood, the feed opening stretch into the revolution calcining kiln blanking dust collection cover, and the revolution calcining kiln blanking gathers dust
The lower section of cover is provided with the hot material tank car that can be moved along the two-orbit being fixed on the floor face in the electro-smelting workshop, the heat
The upper end charging aperture of batch can car is provided with pneumatic blank-plate valve, and the lower end of the hot material tank car is provided with pneumatic gate valve, described pneumatic slotting
The lower end of plate valve is provided with discharge nozzle, and the lower section of the discharge nozzle is provided with annular cover plate, and the upper end of the annular cover plate is provided with cylinder
Shape sleeve, the cylindrical sleeve are connected with the outer wall of the discharge nozzle, and the annular cover plate is provided with relative with the discharge nozzle
The through hole answered；
The lower section of the two-orbit is provided with multiple hot aggregate bins, and the upper end of the hot aggregate bin has a feed bin charging aperture or multiple edges
The feed bin charging aperture of the bearing of trend distribution of the two-orbit, two rails of the upper end of the feed bin charging aperture from the two-orbit
Stretched out between road, the external diameter of the annular cover plate is more than the internal diameter of the feed bin charging aperture, the lower end of the hot aggregate bin be provided with
The corresponding tremie pipe of the feed bin charging aperture；
The upper end of the revolution calcining kiln blanking dust collection cover is evenly distributed with multiple gather dust centered on the axis of the feed opening
Cover suction port；
The upper end of the hot aggregate bin is additionally provided with feed bin suction port；
The feeding dust pelletizing system also includes sack cleaner and dedusting airduct house steward, and the dedusting airduct house steward's is close described
Air-valve is matched somebody with somebody in one end of sack cleaner provided with cold wind, and the other end of the dedusting airduct house steward passes through the first dedusting airduct branch respectively
Pipe connects with the dust collection cover suction port, the middle part pipeline section of the dedusting airduct house steward respectively by the second dedusting airduct branch pipe and
The feed bin suction port connection, the second dedusting airduct branch pipe is interior to be provided with quantity switch of air valve.
A kind of 2. RKEF nickel alloys ore-smelting electric furnace feeding dust pelletizing system according to claim 1, it is characterised in that：It is described
The oral area of feed opening is provided with hydraulic fan-shaped valve.
A kind of 3. RKEF nickel alloys ore-smelting electric furnace feeding dust pelletizing system according to claim 1, it is characterised in that：It is described
The outer wall labyrinth seal of cylindrical sleeve and the discharge nozzle, the side wall of the cylindrical sleeve are provided with multiple length being vertically arranged
Shape hole, the outer wall of the discharge nozzle are provided with the circular steel column to match with the elongated hole.
A kind of 4. RKEF nickel alloys ore-smelting electric furnace feeding dust pelletizing system according to claim 1, it is characterised in that：It is described
Second dedusting airduct branch pipe include the long straight tube that is connected with the middle part pipeline section of the dedusting airduct house steward and with the feed bin dust suction
The short tube of mouth connection, the quantity switch of air valve are located in the short tube, and it is soft that airduct is provided between the long straight tube and the short tube
Connection.
A kind of 5. RKEF nickel alloys ore-smelting electric furnace feeding dust pelletizing system according to claim 3, it is characterised in that：It is described
The outer of annular cover plate has the upper seesaw of annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720890686.5U CN207006866U (en) | 2017-07-21 | 2017-07-21 | A kind of RKEF nickel alloys ore-smelting electric furnace feeding dust pelletizing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720890686.5U CN207006866U (en) | 2017-07-21 | 2017-07-21 | A kind of RKEF nickel alloys ore-smelting electric furnace feeding dust pelletizing system |
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| Publication Number | Publication Date |
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| CN207006866U true CN207006866U (en) | 2018-02-13 |
Family
ID=61455548
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|---|---|---|---|
| CN201720890686.5U Withdrawn - After Issue CN207006866U (en) | 2017-07-21 | 2017-07-21 | A kind of RKEF nickel alloys ore-smelting electric furnace feeding dust pelletizing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246799A (en) * | 2017-07-21 | 2017-10-13 | 大连华锐重工集团股份有限公司 | A kind of RKEF nickel alloys ore-smelting electric furnace feeding dust pelletizing system |
-
2017
- 2017-07-21 CN CN201720890686.5U patent/CN207006866U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246799A (en) * | 2017-07-21 | 2017-10-13 | 大连华锐重工集团股份有限公司 | A kind of RKEF nickel alloys ore-smelting electric furnace feeding dust pelletizing system |
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