CN108680029B - A kind of improved vibration premixed type concentrate burner - Google Patents
A kind of improved vibration premixed type concentrate burner Download PDFInfo
- Publication number
- CN108680029B CN108680029B CN201810262167.3A CN201810262167A CN108680029B CN 108680029 B CN108680029 B CN 108680029B CN 201810262167 A CN201810262167 A CN 201810262167A CN 108680029 B CN108680029 B CN 108680029B
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- Prior art keywords
- air hose
- air
- vibration
- material feeding
- dispersion
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/18—Charging particulate material using a fluid carrier
-
- 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
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/0028—Smelting or converting
- C22B15/0047—Smelting or converting flash smelting or converting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
- F27D25/001—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag comprising breaking tools, e.g. hammers, drills, scrapers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2001/00—Composition, conformation or state of the charge
- F27M2001/01—Charges containing mainly non-ferrous metals
- F27M2001/015—Copper
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/13—Smelting
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
This divisional application discloses a kind of improved vibration premixed type concentrate burner, the dispersion air hose of the oxygen supplying tube of arrangement, hollow annular is overlapped and is vertically arranged including tube core, and form the taper technique bellows of air compartment, disperse the material feeding box that oblique under shed at the top of it is arranged on the outer wall of air hose, and it is fixed with horizontal fixed plate at the top of the dispersion air hose of hollow annular, the end far from dispersion air piping in fixed plate, which is fixed with, falls the pneumatic hammer vibration device of dross by driving dispersion air hose to pump to shake；It feeds and is equipped with the feed inlet premix air port of air port upward on the downside of box opening；Technique bellows entrance is equipped with the technique wind rotation direction device for making gas tangentially premix concentrate powder；It is additionally provided with the independent premix supply air line and pre-mixed air beam device for leading to material feeding box bottom in dispersion air hose, the inward turning air hose towards discharge port is additionally provided on the outside of material feeding box.The present invention is vibration premixed type concentrate burner, can be effectively reduced dross phenomenon, the combustion efficiency for improving copper concentrate mineral aggregate.
Description
The application is application number 201610632799.5, on 08 04th, 2016 applying date, " a kind of vibration is pre- for denomination of invention
The divisional application of mixed type concentrate burner ".
Technical field
The invention belongs to the technical field of smelting of copper, and in particular to a kind of improved vibration premixed type concentrate burner.
Background technique
It is that concentrate burner and the technique for blasting technique wind are set at the top of smelting furnace in the Flash Smelting Furnace smelting technology of copper
Bellows spray into copper concentrate mineral aggregate, oxygen and dispersion wind, in the bottom of concentrate burner, mine by concentrate burner into smelting furnace
Material is mixed with technique wind and ignition forms clinker and matte, and mineral aggregate is sufficiently mixed with the realization of technique wind, this is mineral aggregate in essence
One of rapid, essential condition of complete oxidation is carried out in the limited space in mine nozzle lower part.
Currently, the concentrate burner that copper mine enterprise uses is that the center designed and produced by Outokumpu company is expanded mostly
It dissipates type concentrate burner and mainly passes through gas phase as shown in Figure 1, being that mineral aggregate and technique wind spray into furnace in the same direction the characteristics of concentrate burner
Achieve the purpose that mixing with the counterdiffusion of solid phase phase, infiltration, when carrying out low level material spray using this central diffused concentrate burner,
That is mineral aggregate is easier to mix with technique wind, but in high-order material spray when the entrance of mineral aggregate is exported close to technique wind, that is to say,
The entrance of mineral aggregate is higher, when still having certain difference in height with the outlet of technique wind, mineral aggregate reaction time relative delay at this time, separately
Outside, when the input amount of mineral aggregate is less, entering furnace mineral aggregate rapidly can be heated to reaction temperature by furnace high-temperature flue gas or radiant heat,
And in the range of exporting about 1.5m apart from concentrate burner begin to that violent combustion reaction occurs, and the input amount of mineral aggregate is more
When, in the finite spatial extent of reaction tower top feed mouth, it is difficult to guarantee that mineral aggregate can be sufficiently mixed with technique wind, Er Qie
Concentrate burner bottom is easy to produce bonding phenomenon；Simultaneously as the water cooled bottom plate of nozzle lower end, plays certain heat-insulated and subtract
Few noclulation, but in actual motion, due to longtime running, certain dross phenomenon is still produced in water cooled bottom plate lower end, from
And the mass transfer of combustion reaction, rate of heat transfer are leveraged, not only cause the ferroso-ferric oxide content in clinker to increase, dust rate
And SO3Production rate rises, and utilization efficiency is also decreased obviously, and then influences the production capacity of melting product copper.
Therefore, how to guarantee being sufficiently mixed for mineral aggregate and technique wind, improve the counterdiffusion of gas-solid phase, infiltration, solve in not shadow
Under conditions of ringing production, the problem of periodic cleaning nozzle lower part dross, the combustion efficiency of copper concentrate mineral aggregate is improved, this is molten to flash
It is extremely important for sweetening process.
Summary of the invention
In view of the above deficiencies, the present invention provides one kind under conditions of not influencing production, is sufficiently mixed mineral aggregate and technique
The problem of wind, periodic cleaning nozzle lower part dross, so as to the burning effect that dross phenomenon is effectively reduced, improves copper concentrate mineral aggregate
The vibration premixed type concentrate burner of fruit.
To achieve the above object, the invention adopts the following technical scheme:
A kind of improved vibration premixed type concentrate burner, is overlapped including tube core and is vertically successively arranged the oxygen supply of arrangement
The dispersion air hose of pipe, hollow annular, and the taper technique bellows of air compartment are formed, it is arranged on the outer wall of the dispersion air hose
The material feeding box of its oblique under shed in top, and it is fixed with horizontal fixed plate at the top of the dispersion air hose of hollow annular, in fixed plate
The upper end far from dispersion air piping, which is fixed with, falls the pneumatic hammer vibration of dross by driving dispersion air hose to pump to shake
Dynamic device；The pneumatic hammer vibration device include be installed in pneumatic hammer on the upside of fixed plate, be connected on the downside of fixed plate with pneumatic hammer it is strong
Power spring and guide rod are set on the guide rod on the upside of the brute spring, and the lower end of brute spring is supported on charging
On case；The technique bellows are equipped with the technique wind rotation direction device for making gas tangentially premix concentrate powder in diameter maximum.
Preferably, the lower semisection of the brute spring is sheathed in pilot sleeve, and locking is provided on the upside of pilot sleeve
Nut, pilot sleeve are fixed on the top of material feeding box by the pedestal on the downside of it, and pilot sleeve is located at locking nut and bottom
The positioning plate being fixedly connected with dispersion air hose is arranged on stack shell between seat.
Further, it is 3 that the pneumatic hammer vibration device is uniformly distributed in fixed plate.
Preferably, the neighbouring downside of the charging box opening is equipped with the feed inlet of air port upward and premixes air port.
Preferably, the technique wind rotation direction device is set as along the oblique technique that the inclined surface of taper technique bellows is parallel to be set
Wind inlet, to form the whirlwind that can tangentially premix concentrate powder.
Preferably, it is additionally provided with the independent premix supply air line for leading to material feeding box bottom in the dispersion air hose and surrounds and is somebody's turn to do
Pre-mixed air beam device in pipeline side；The pre-mixed air beam device is equipped with the tangential swing angle towards 30 ° of lateral direction inclination.
The beneficial effects of the present invention are:
1), the present invention is provided with pneumatic hammer vibration device, pneumatic hammer vibration device include be installed in pneumatic hammer on the upside of fixed plate,
The brute spring and guide rod being connected on the downside of fixed plate with pneumatic hammer；Wherein, the brute spring is set on the guide rod；By
In the prolonged difference smelted or concentrate amount is how many, a certain amount of dross phenomenon can be caused in nozzle bottom end, when pneumatic hammer is hammered into shape
When hitting, fixed plate makes to disperse wind therewith along guide rod compression brute spring to drive dispersion air hose to do guiding movement up and down
Pipe generates transient vibration, and agglomeration product can shake and fall；Therefore the present invention can clear up dross operation automatically in process of production, greatly
Ground improves production efficiency, while can greatly reduce equipment maintenance cost.
2), the neighbouring downside of present invention charging box opening is equipped with the feed inlet of air port upward and premixes air port, when by drying
Powdery concentrate when entering material feeding box, when bulk concentrate powder feed can be made by being put into feed inlet pre-mixed air upwards by air port
Disperse as far as possible, the unlikely situation for causing charging uneven ensure that reliability service of the invention.
3), the pre-mixed air beam that the present invention blows out the independent gas premixed in supply air line tangentially when concentrate powder is fallen to
When device, is further dispersed using 30 ° of tangential swing angle of pre-mixed air beam device, improve the effect of gas-solid mixing.
4), the present invention when concentrate powder down and by taper technique bellows disperse around when, pass through technique wind rotation direction
The whirlwind of device blowout, tangentially premixes concentrate powder, premix residence time of the concentrate powder in reversed nozzle can be improved, further mention
High premixing effect improves production efficiency.
5), in conclusion the present invention is a kind of vibration premixed type concentrate burner, pass through dispersion air hose, independent premix gas supply
Pipeline and pre-mixed air beam device, feed inlet premix air port are entered the wind obliquely, multiple its cloth of premix of technique wind rotation direction device progress is equal
It is even, inner space can be made full use of, concentrate and oxygen are more fully mixed, and is had by pneumatic hammer vibration device
Effect completes automatic clear tumor operation, improves the service life of concentrate burner, and improve the product quality of Copper making, reduces
Environmental pollution.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for being the concentrate burner of flash smelting furnace in the prior art.
Fig. 2 is structure sectional view of the invention.
Fig. 3 is the amplification assumption diagram of pneumatic hammer vibration device of the present invention (wherein brute spring only depicts the first part).
Fig. 4 is the partial enlarged view of Fig. 2.
Fig. 5 is the vertical view schematic diagram of Fig. 2.
Fig. 6 is technique wind rotation direction device three-dimensional figure
The meaning of label symbol is as follows in figure:
10- oxygen supplying tube 11- dispersion air hose 110- independently premixes supply air line
111- pre-mixed air beam device 112- lamellated plate 113- water cooled bottom plate 12- material feeding box
120- feed inlet premixes air port 13- water-cooling system 14- technique bellows
140- technique wind rotation direction device
20- fixed plate 21- pneumatic hammer vibration device 210- pneumatic hammer 211- brute spring
212- guide rod 213- pilot sleeve 214- positioning plate 215- locking nut
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, is clearly and completely retouched to the technical solution in the present invention
It states.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
As shown in Fig. 2, for a kind of improved vibration premixed type concentrate burner, including tube core is overlapped and is vertically successively arranged
The dispersion air hose 11 of the oxygen supplying tube 10 of arrangement, hollow annular, and form the taper technique bellows 14 of air compartment, the dispersion air hose
11 be side air admission, and the material feeding box 12 of oblique under shed at the top of it, and cavity ring are arranged on the outer wall of dispersion air hose 11
It is fixed with horizontal fixed plate 20 at the top of the dispersion air hose 11 of shape, one end far from dispersion air piping in fixed plate 20 is fixed with
The pneumatic hammer vibration device 21 of dross is removed by driving dispersion air hose 11 to pump.
Specifically, as shown in connection with fig. 3, the pneumatic hammer vibration device 21 include the pneumatic hammer 210 for being installed in 20 upside of fixed plate,
In the brute spring 211 and guide rod 212 that 20 downside of fixed plate is connected with pneumatic hammer 210；Wherein, the guide rod 212 is inserted in
In brute spring 211；The downside movable supporting of brute spring 211 is at the top of material feeding box 12.It is fixed when pneumatic hammer 210 hammers
Plate 20 drives guide rod 212 to compress brute spring 211 therewith, to do fortune up and down by the driving dispersion air hose 11 of fixed plate 20
It is dynamic.
It is furthermore preferred that the lower semisection of above-mentioned brute spring 211 is also arranged with pilot sleeve 213, the upside of pilot sleeve 213
It is provided with locking nut 215, pilot sleeve 213 is fixed on the top of material feeding box 12 by the pedestal on the downside of it, pilot sleeve
The positioning plate 214 being fixedly connected with dispersion air hose 11 is arranged on 213；This structure design is so that locking nut 215, pilot sleeve
213 are fixed together with material feeding box 12, and when pneumatic hammer vibration device 21 works, pneumatic hammer 210 drives fixed plate 20 to compress downwards
Brute spring 211, brute spring 211 do guiding movement in the direction that pilot sleeve 213 limits, and ensure that fixed plate 20, dispersion
Air hose 11, positioning plate 214 and brute spring 211 4 do the reciprocating motion above and below stablizing with pneumatic hammer 210, do not send out because shaking
Life is horizontally displaced.The stroke of the adjustable positioning plate 214 of setting of the locking nut 215.
And it as shown in figure 5, it is 3 that pneumatic hammer vibration device 21 is uniformly distributed on ring-type fixing plate 20, is spaced each other
120 ° of central angle；So that the more smoothly vibration of pneumatic hammer 210, and avoid dispersion air hose 11 and rotated in vibration.
As a kind of further preferred embodiment, the neighbouring downside that the material feeding box 12 is open is equipped with the charging of air port upward
Mouth premix air port 120.
Heretofore described technique bellows 14 are equipped with the technique wind for making gas tangentially premix concentrate powder in diameter maximum
Rotation direction device 140.
Specifically, the technique wind rotation direction device 140 is as shown in fig. 6, it is set as along the inclined surface of taper technique bellows 14
The oblique technique wind inlet set in parallel, to form the whirlwind that can tangentially premix concentrate powder.
As a kind of further preferred embodiment, as shown in Figure 2,4, it is additionally provided in the dispersion air hose 11 and leads to material feeding box
The independent of bottom premixes supply air line 110 and around the pre-mixed air beam device 111 in pipeline side；The pre-mixed air beam device
111 equipped with the tangential swing angle β for rolling oblique 30 ° outwardly.
Following detailed description is made to pre-compounding process of the invention with reference to the accompanying drawing.
S1, firstly, when dried powdery concentrate is directly entered material feeding box 12, the powder for being placed in nozzle interior cannot be equal
Point, it is entered the wind at air port 120 by being premixed from the upward feed inlet in air port, so that dispersing as far as possible when bulk concentrate powder feed；
S2, then, when concentrate powder falls to the pre-mixed air for blowing out the independent gas premixed in supply air line 110 tangentially
When beam device 111, the tangential swing angle using 30 degree on pre-mixed air beam device 111 further disperses；
Also, when gas is flow to close to one end of air outlet in dispersion air hose 11, across ventilative lamellated plate 112,
It is even to be contacted with concentrate powder, improve gas-solid mixing effect；
When concentrate powder down and by taper technique bellows 14 disperse around when, pass through technique wind rotation direction device 140
The whirlwind of blowout, tangentially premixes concentrate powder, and premix residence time of the concentrate powder in nozzle can be improved, further increase premix
Effect improves production efficiency；
S3, due to smelting for a long time, concentrate amount it is how much different, in nozzle bottom end can cause a certain amount of caking phenomenon,
It can be hammered by pneumatic hammer 210, so that fixed plate 20 compresses brute spring 212 along guide rod 212 therewith to drive dispersion wind
Pipe 11 does guiding movement up and down, makes to disperse the generation transient vibration of air hose 11, the vibration of agglomeration product is fallen.
Claims (6)
1. a kind of improved vibration premixed type concentrate burner, is overlapped including tube core and is vertically successively arranged the oxygen supplying tube of arrangement
(10), the dispersion air hose (11) of hollow annular, and form the taper technique bellows (14) of air compartment, it is characterised in that: described point
The material feeding box (12) of oblique under shed at the top of it, and the dispersion air hose of hollow annular are arranged on the outer wall of relieve heat pipe (11)
(11) top is fixed with horizontal fixed plate (20), and the end far from dispersion air hose on fixed plate (20), which is fixed with, passes through drive
Dispersion air hose (11) pumps and shakes and fall the pneumatic hammer vibration device (21) of dross；Pneumatic hammer vibration device (21) packet
The brute spring for including the pneumatic hammer (210) being installed on the upside of fixed plate (20), being connected on the downside of fixed plate (20) with pneumatic hammer (210)
(211) and guide rod (212) it, is set on the guide rod (212) on the upside of the brute spring (211), brute spring
(211) lower end is supported on material feeding box (12)；The technique bellows (14) are equipped in diameter maximum keeps gas tangentially pre-
The technique wind rotation direction device (140) of mixed concentrate powder.
2. the improved vibration premixed type concentrate burner of one kind according to claim 1, it is characterised in that: the brute spring
(211) lower semisection is sheathed in pilot sleeve (213), and locking nut (215) are provided on the upside of pilot sleeve (213), are led
It is fixed on the top of material feeding box (12) to sleeve (213) by the pedestal on the downside of it, pilot sleeve (213) is located at locking screw
The positioning plate (214) being fixedly connected with dispersion air hose (11) is arranged on stack shell between female (215) and pedestal.
3. the improved vibration premixed type concentrate burner of one kind according to claim 2, it is characterised in that: the pneumatic hammer vibration
It is 3 that device (21) is uniformly distributed on fixed plate (20).
4. the improved vibration premixed type concentrate burner of one kind according to claim 1, it is characterised in that: the material feeding box
(12) the neighbouring downside being open is equipped with the feed inlet of air port upward and premixes air port (120).
5. the improved vibration premixed type concentrate burner of one kind according to claim 1, it is characterised in that: the technique wind rotation
It is set as to device (140) along the oblique technique wind inlet that the inclined surface of taper technique bellows (14) is parallel to be set, it can edge with formation
The whirlwind of tangential premix concentrate powder.
6. the improved vibration premixed type concentrate burner of one kind according to claim 1, it is characterised in that: the dispersion air hose
(11) it is additionally provided with independent premix supply air line (110) for leading to material feeding box (12) bottom in and is centered around the pre- of the pipeline side
Mixed wind beam device (111)；The pre-mixed air beam device (111) is equipped with the tangential swing angle (β) for rolling oblique 30 ° outwardly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810262167.3A CN108680029B (en) | 2016-08-04 | 2016-08-04 | A kind of improved vibration premixed type concentrate burner |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610632799.5A CN106288815B (en) | 2016-08-04 | 2016-08-04 | A kind of vibration premixed type concentrate burner |
| CN201810262167.3A CN108680029B (en) | 2016-08-04 | 2016-08-04 | A kind of improved vibration premixed type concentrate burner |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610632799.5A Division CN106288815B (en) | 2016-08-04 | 2016-08-04 | A kind of vibration premixed type concentrate burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108680029A CN108680029A (en) | 2018-10-19 |
| CN108680029B true CN108680029B (en) | 2019-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810262167.3A Active CN108680029B (en) | 2016-08-04 | 2016-08-04 | A kind of improved vibration premixed type concentrate burner |
| CN201610632799.5A Active CN106288815B (en) | 2016-08-04 | 2016-08-04 | A kind of vibration premixed type concentrate burner |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610632799.5A Active CN106288815B (en) | 2016-08-04 | 2016-08-04 | A kind of vibration premixed type concentrate burner |
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| CN (2) | CN108680029B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489277B (en) * | 2018-03-26 | 2019-08-30 | 合肥通用机械研究院有限公司 | A kind of adjustable premixed type concentrate burner of charging |
| CN110777265B (en) * | 2019-12-02 | 2024-02-20 | 江西铜业股份有限公司 | Concentrate nozzle of cyclone diffusion type flash furnace |
| CN110804702A (en) * | 2019-12-02 | 2020-02-18 | 江西铜业股份有限公司 | Concentrate nozzle for flash smelting |
| CN112710159A (en) * | 2020-12-10 | 2021-04-27 | 广西金川有色金属有限公司 | Pure oxygen smelting device of flash furnace and using method thereof |
| CN116951987B (en) * | 2023-09-18 | 2024-01-05 | 张家港广大特材股份有限公司 | Air impact type powder dispersing device, method and reaction melting furnace applied to furnace mouth feeding pipe |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI105828B (en) * | 1999-05-31 | 2000-10-13 | Outokumpu Oy | Device for equalizing the feeding-in of pulverulent material in an enrichment burner in the ore concentrate burner of a suspension smelting furnace |
| FI121852B (en) * | 2009-10-19 | 2011-05-13 | Outotec Oyj | Process for feeding fuel gas into the reaction shaft in a suspension melting furnace and burner |
| EP2705317B1 (en) * | 2011-05-06 | 2017-12-27 | Hatch Ltd | Burner and feed apparatus for flash smelter |
| CN104388695B (en) * | 2014-11-26 | 2018-03-13 | 铜陵有色金属集团股份有限公司金冠铜业分公司 | Concentrate burner |
| CN104567431B (en) * | 2014-12-04 | 2017-03-15 | 金川集团股份有限公司 | Cyclone type concentrate burner |
| CN204434699U (en) * | 2015-01-20 | 2015-07-01 | 铜陵有色金属集团股份有限公司金冠铜业分公司 | The concentrate burner of flash smelting furnace |
| CN104561587B (en) * | 2015-01-20 | 2017-01-18 | 铜陵有色金属集团股份有限公司金冠铜业分公司 | Concentrate jet nozzle of smelting furnace |
-
2016
- 2016-08-04 CN CN201810262167.3A patent/CN108680029B/en active Active
- 2016-08-04 CN CN201610632799.5A patent/CN106288815B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108680029A (en) | 2018-10-19 |
| CN106288815A (en) | 2017-01-04 |
| CN106288815B (en) | 2018-06-29 |
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