CN107225233A - It is a kind of that the device and method that powder is passivated is produced to carbonyl process - Google Patents
It is a kind of that the device and method that powder is passivated is produced to carbonyl process Download PDFInfo
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- CN107225233A CN107225233A CN201710580243.0A CN201710580243A CN107225233A CN 107225233 A CN107225233 A CN 107225233A CN 201710580243 A CN201710580243 A CN 201710580243A CN 107225233 A CN107225233 A CN 107225233A
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- valve
- pipe
- air
- oxygen
- inlet duct
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000000843 powder Substances 0.000 title claims abstract description 20
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 title claims abstract description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 177
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 88
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 83
- 239000001301 oxygen Substances 0.000 claims abstract description 83
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 83
- 239000000945 filler Substances 0.000 claims abstract description 55
- 239000007789 gas Substances 0.000 claims abstract description 25
- 230000000994 depressogenic effect Effects 0.000 claims description 13
- 230000033228 biological regulation Effects 0.000 claims description 7
- 230000003139 buffering effect Effects 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 239000003570 air Substances 0.000 claims description 2
- 229910001873 dinitrogen Inorganic materials 0.000 claims 1
- 238000002161 passivation Methods 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 2
- 206010000372 Accident at work Diseases 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- OLBVUFHMDRJKTK-UHFFFAOYSA-N [N].[O] Chemical compound [N].[O] OLBVUFHMDRJKTK-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 150000001728 carbonyl compounds Chemical class 0.000 description 1
- -1 carbonyl iron Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
- B22F1/145—Chemical treatment, e.g. passivation or decarburisation
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/24—Nitriding
- C23C8/26—Nitriding of ferrous surfaces
Abstract
The device that powder is passivated is produced to carbonyl process the invention discloses a kind of, the device includes surge tank, filler bin, escape pipe, blow-off pipe, air or oxygen air inlet pipe, first nitrogen inlet duct and the second nitrogen inlet duct, one end of escape pipe and the top of surge tank are connected, the other end is connected with filler bin, the bottom connection of blow-off pipe and surge tank, air or oxygen air inlet pipe and the first nitrogen inlet duct are connected with the side wall of surge tank respectively, second nitrogen inlet duct is connected with filler bin, in escape pipe, blow-off pipe, air or oxygen air inlet pipe, valve is equipped with first nitrogen inlet duct and the second nitrogen inlet duct, sample tap is provided with the escape pipe between valve and surge tank on escape pipe.This invention ensures that the stability of passivation gas concentration, effectively reduces and controls the mixing of CO and oxygen by way of setting rational passivation, ensured the security reliability of operation.
Description
Technical field
The invention belongs to carbonyl technical field of metallurgical production, and in particular to a kind of blunt with oxygen to carbonyl process production powder progress
The apparatus and method of change.
Background technology
In the decomposition production process of the carbonyl compounds such as carbonyl iron, the powder pyrolytic of output into fine particle, particle
Surface-active is big, while easily CO absorption gas, has the risk of potential industrial accident, therefore typically use nitrogen in production process
It is long to blow or the mode of boosting-pressure release is passivated to metal carbonyl powder and disinfected.The metal carbonyl powder after nitrogen inerting
The surface oxidation-resistant at end increases, but for the application also weak point of special dimension.Meanwhile, only by nitrogen inerting
The resistance to settling of metal carbonyl powder also have to be strengthened.Sunk to further improve the inoxidizability of metal carbonyl powder and resist
Drop property, adapts to the demand of domain specific application, new processing need to be done to metal carbonyl powder.
The content of the invention
In view of the above-mentioned problems of the prior art, the present invention provides a kind of dress being passivated to carbonyl process production powder
Put and method, the apparatus structure is simple, and this method can effectively lift the inoxidizability and resistance to settling of metal dust.
In order to achieve the above object, the present invention uses following technical scheme：
It is a kind of that the device that powder is passivated is produced to carbonyl process, it is characterised in that the device includes surge tank, filler bin, gone out
Tracheae, blow-off pipe, air or oxygen air inlet pipe, the first nitrogen inlet duct and the second nitrogen inlet duct, one end of the escape pipe
It is connected with the top of surge tank, the other end is connected with filler bin；The bottom connection of the blow-off pipe and surge tank；The air or
Oxygen intake pipe and the first nitrogen inlet duct are connected with the side wall of surge tank respectively；Second nitrogen inlet duct connects with filler bin
Connect；Valve is equipped with escape pipe, blow-off pipe, air or oxygen air inlet pipe, the first nitrogen inlet duct and the second nitrogen inlet duct
Door；Sample tap is provided with the escape pipe between valve and surge tank on the escape pipe.
According to above-mentioned device, it is characterised in that described air or oxygen air inlet pipe is by air or oxygen air inlet pipe master
Pipeline and some air or oxygen air inlet pipe subtube compositions, one end of the air or oxygen air inlet pipe subtube and air
Or oxygen intake pipe main pipeline is connected, the other end is connected with surge tank；The first described nitrogen inlet duct is by the first nitrogen air inlet
Pipe main pipeline and some first nitrogen inlet duct subtube compositions, one end and first of the first nitrogen inlet duct subtube
Nitrogen inlet duct main pipeline is connected, and the other end is connected with surge tank；Described some air or oxygen air inlet pipe subtubes and
Circumference of some first nitrogen inlet duct subtubes along buffering tank is uniformly distributed.
According to above-mentioned device, it is characterised in that on the escape pipe provided with can with air or oxygen air inlet pipe
The online oxygen concentration analyzer of valve interlocking.
According to above-mentioned device, it is characterised in that the valve on the escape pipe is two, respectively Self-driven pressure-adjusting valve
With remote controlled valve.
According to above-mentioned device, it is characterised in that be all provided with the air or oxygen air inlet pipe and the first nitrogen inlet duct
There is flowmeter.
According to above-mentioned device, it is characterised in that the surge tank is provided with and air or oxygen air inlet pipe and the first nitrogen
The pressure gauge of valve interlocking in gas air inlet pipe.
It is a kind of that the method that powder is passivated is produced to carbonyl process using above-mentioned device, it is characterised in that this method bag
Include following steps：
（1）Close all valves；
（2）According to the technological requirement of the oxygen concentration for the gas for being passed through filler bin, theoretical nitrogen, the flow of air or oxygen are calculated
Valve on value, the first nitrogen inlet duct of regulation and air or oxygen air inlet pipe, the flow of nitrogen and air or oxygen is adjusted
To the flow value calculated；
（3）It is sampled in sample tap, detects the oxygen concentration of tracheal strips gas, according to testing result, by adjusts the first nitrogen
Valve in gas air inlet pipe and air or oxygen air inlet pipe, uses endotracheal oxygen concentration and reaches technological requirement；
（4）The pressure regulation pressure of Self-driven pressure-adjusting valve is set as≤0.6Mpa；
（5）The valve on blow-off pipe is opened, after gas in surge tank is exhausted, the valve closed on blow-off pipe；Discharge gas
The volume of body is equal to n times of buffering tank volume, n >=2；
（6）Valve on online oxygen concentration analyzer and air or oxygen air inlet pipe is subjected to interlocking setting；
（7）The valve on the second nitrogen inlet duct is opened, nitrogen is passed through into filler bin, when pressure is 40-60KPa in filler bin
When, the valve closed on the second nitrogen inlet duct, it is 1-3KPa that filler bin, which is unloaded, and is depressed into pressure in storehouse；
（8）Step is performed repeatedly（7）In operation, number of times be no less than 3 times；
（9）Valve remote controlled on escape pipe is opened, the gas in surge tank is passed through into filler bin, when filler bin pressure
During for 40-60KPa, valve remote controlled on escape pipe is closed, it is 1-3KPa that filler bin, which is unloaded, and is depressed into pressure in storehouse；
（10）Step is performed repeatedly（9）In operation, number of times be 20-30 times；
（11）The valve on the second nitrogen inlet duct is opened, nitrogen is passed through into filler bin, when pressure is 40- in filler bin
During 60KPa, the valve closed on the second nitrogen inlet duct, it is 1-3KPa that filler bin, which is unloaded, and is depressed into pressure in storehouse；
（12）Step is performed repeatedly（11）In operation, number of times be no less than 3 times.
According to above-mentioned method, it is characterised in that step（7）And step（11）In, open on the second nitrogen inlet duct
Valve, nitrogen is passed through into filler bin, when pressure is 50KPa in filler bin, and the valve closed on the second nitrogen inlet duct will
It is 3KPa that filler bin, which unloads and is depressed into pressure in storehouse,；Step（8）And step（12）In, number of operations is 4 times.
According to above-mentioned method, it is characterised in that step（9）In, open valve remote controlled on escape pipe, Xiang Fen
The gas in surge tank is passed through in feed bin, when filler bin pressure is 50KPa, valve remote controlled on escape pipe is closed,
It is 3KPa that filler bin, which is unloaded, and is depressed into pressure in storehouse；Step（10）In, number of operations is 25 times.
The present invention has the advantages that compared with the prior art：
The present invention confirms to detect that the modes such as oxygen concentration are protected with throughput, online oxygen concentration analyzer and sample tap by theoretical calculation
Stabilization and validity with oxygen concentration are demonstrate,proved；By set rational nitrogen-with oxygen-nitrogen sterilize passivation mode effectively reduce and
The mixing of CO and oxygen is controlled, the security reliability of operation has been ensured；By reasonably matching somebody with somebody oxygen concentration gaseous mixture to metal carbonyl
Powder carries out disinfection passivation operation, effectively improves the inoxidizability and resistance to settling of powder, has expanded metal carbonyl powder
Utilization benefit.
Brief description of the drawings
Fig. 1 is the structural representation of the device of the present invention.
Embodiment
As shown in figure 1, the present invention's produces the device that is passivated of powder to carbonyl process, including surge tank 1, filler bin 2,
Escape pipe 3, blow-off pipe 4, air or oxygen air inlet pipe 5, the first nitrogen inlet duct 6 and the second nitrogen inlet duct 7.
One end of escape pipe 3 is connected with the top of surge tank 1, and the other end is connected with filler bin 2.Blow-off pipe 4 and surge tank 1
Bottom connection.The nitrogen inlet duct 6 of air or oxygen air inlet pipe 5 and first is connected with the side wall of surge tank 1 respectively.Particularly,
Air or oxygen air inlet pipe 5 is made up of air or oxygen air inlet pipe main pipeline and some air or oxygen air inlet pipe subtubes,
One end of air or oxygen air inlet pipe subtube is connected with air or oxygen air inlet pipe main pipeline, and the other end is connected with surge tank 1；
First nitrogen inlet duct 6 is made up of the first nitrogen inlet duct main pipeline and some first nitrogen inlet duct subtubes, the first nitrogen
One end of gas air inlet pipe subtube is connected with the first nitrogen inlet duct main pipeline, and the other end is connected with surge tank 1；Some air
Or the circumference of oxygen intake pipe subtube and some first nitrogen inlet duct subtubes along the tank body of surge tank 1 is uniformly distributed, profit
It is well mixed between gas.Second nitrogen inlet duct 7 is connected with filler bin 2.Enter in escape pipe 3, blow-off pipe 4, air or oxygen
Valve is equipped with tracheae 5, the first nitrogen inlet duct 6 and the second nitrogen inlet duct 7.Sample tap 8 is provided with escape pipe 3, is taken
Sample mouthful is arranged between the valve on the junction and escape pipe of surge tank 1 and escape pipe 3.
Online oxygen concentration analyzer 9 is provided with escape pipe 3, analyze data feeds back to control system interface, and records oxygen
Change in concentration trend, meanwhile, online oxygen concentration analyzer 9 can be interlocked with the valve 10 in air or oxygen air inlet pipe 5.Outlet
Valve on pipe 3 is two, respectively Self-driven pressure-adjusting valve 11 and remote controlled valve 12.Air or oxygen air inlet pipe 5
Flowmeter is equipped with the first nitrogen inlet duct 6.
Meanwhile, surge tank 1 is provided with and the valve interlocking on the nitrogen inlet duct 6 of air or oxygen air inlet pipe 5 and first
Pressure gauge 13, when buffering pressure inside the tank more than limit value, the valve on the nitrogen inlet duct 6 of air or oxygen air inlet pipe 5 and first
It is automatic to close.
The present invention's comprises the following steps to the method that carbonyl process production powder is passivated：
（1）Close all valves.
（2）According to the technological requirement of the oxygen concentration for the gas for being passed through filler bin, theoretical nitrogen, the stream of air or oxygen are calculated
The valve 10 on valve 14 and air or oxygen air inlet pipe 5 on value, the first nitrogen inlet duct 6 of regulation, by nitrogen and air
Or the flow of oxygen is adjusted to the flow value of calculating.
（3）It is sampled in sample tap 8, the oxygen concentration of gas in detection escape pipe 3, according to testing result, passes through regulation
The valve 10 on valve 14 and air or oxygen air inlet pipe 5 on first nitrogen inlet duct 6, reaches the oxygen concentration in escape pipe 3
To technological requirement.
（4）The pressure regulation pressure of Self-driven pressure-adjusting valve 11 is set as≤0.6Mpa.
（5）The valve 15 on blow-off pipe 4 is opened, after gas in surge tank 1 is exhausted, the valve closed on blow-off pipe 4
Door 15.The volume for discharging gas is equal to n times of buffering tank volume, n >=2.
（6）Valve 10 on online oxygen concentration analyzer 9 and air or oxygen air inlet pipe 5 is subjected to interlocking setting.Carry out
The purpose that interlocking is set is fluctuated when the oxygen concentration shown on online oxygen concentration analyzer is produced compared with the oxygen concentration of technological requirement
When, interlocking setting is played a role, and the valve 10 in control air or oxygen air inlet pipe 5 is finely adjusted, and maintains the steady of outlet concentration
It is qualitative.
（7）The valve 16 on the second nitrogen inlet duct 7 is opened, nitrogen is passed through into filler bin 2, the operation that builds the pressure is carried out, when
When pressure is 40-60KPa in filler bin 2, press operation is unloaded in the valve 16 closed on the second nitrogen inlet duct 7, progress, by filler bin
2 unload that to be depressed into storehouse pressure be 1-3KPa.
（8）Step is performed repeatedly（7）In operation, number of times be no less than 3 times.
（9）Valve 12 remote controlled on escape pipe 3 is opened, the gas in surge tank is passed through into filler bin 2, is carried out
Build the pressure operation, when the pressure of filler bin 2 is 40-60KPa, closes valve 12 remote controlled on escape pipe 3, carries out release behaviour
Make, it is 1-3KPa that filler bin 2, which is unloaded, and is depressed into pressure in storehouse.
（10）Step is performed repeatedly（9）In operation, number of times be 20-30 times.
（11）The valve 16 on the second nitrogen inlet duct 7 is opened, nitrogen is passed through into filler bin 2, the operation that builds the pressure is carried out, when
When pressure is 40-60KPa in filler bin 2, press operation is unloaded in the valve 16 closed on the second nitrogen inlet duct 7, progress, by filler bin
2 unload that to be depressed into storehouse pressure be 1-3KPa.
（12）Step is performed repeatedly（11）In operation, number of times be no less than 3 times.
In practical operation, when being passed through nitrogen into filler bin, the pressure that builds the pressure is 50KPa, unloads pressure pressure for 3KPa, repeatedly
The number of times of operation is 4 times；During the gas being passed through to filler bin in surge tank, the pressure that builds the pressure is 50KPa, unloads pressure pressure for 3KPa,
The number of times operated repeatedly is 25 times.
Claims (9)
1. a kind of produce the device that is passivated of powder to carbonyl process, it is characterised in that the device include surge tank, filler bin,
Escape pipe, blow-off pipe, air or oxygen air inlet pipe, the first nitrogen inlet duct and the second nitrogen inlet duct, the one of the escape pipe
End is connected with the top of surge tank, and the other end is connected with filler bin；The bottom connection of the blow-off pipe and surge tank；The air
Or oxygen intake pipe and the first nitrogen inlet duct are connected with the side wall of surge tank respectively；Second nitrogen inlet duct and filler bin
Connection；It is equipped with escape pipe, blow-off pipe, air or oxygen air inlet pipe, the first nitrogen inlet duct and the second nitrogen inlet duct
Valve；Sample tap is provided with the escape pipe between valve and surge tank on the escape pipe.
2. device according to claim 1, it is characterised in that described air or oxygen air inlet pipe is entered by air or oxygen
Tracheae main pipeline and some air or oxygen air inlet pipe subtube compositions, one end of the air or oxygen air inlet pipe subtube
It is connected with air or oxygen air inlet pipe main pipeline, the other end is connected with surge tank；The first described nitrogen inlet duct is by the first nitrogen
Gas air inlet pipe main pipeline and some first nitrogen inlet duct subtube compositions, one end of the first nitrogen inlet duct subtube
It is connected with the first nitrogen inlet duct main pipeline, the other end is connected with surge tank；Some described air or oxygen air inlet pipe point
The circumference of pipeline and some first nitrogen inlet duct subtubes along buffering tank is uniformly distributed.
3. device according to claim 1, it is characterised in that be provided with air or oxygen to enter on the escape pipe
The online oxygen concentration analyzer of tracheae upper valve gate interlock.
4. device according to claim 3, it is characterised in that the valve on the escape pipe is two, is respectively relied on oneself
Formula pressure regulator valve and remote controlled valve.
5. device according to claim 4, it is characterised in that the air or oxygen air inlet pipe and the first nitrogen inlet duct
On be equipped with flowmeter.
6. device according to claim 5, it is characterised in that the surge tank be provided with air or oxygen air inlet pipe and
The pressure gauge of valve interlocking on first nitrogen inlet duct.
7. the device described in a kind of usage right requirement 5 produces the method that powder is passivated to carbonyl process, it is characterised in that should
Method comprises the following steps：
（1）Close all valves；
（2）According to the technological requirement of the oxygen concentration for the gas for being passed through filler bin, theoretical nitrogen, the flow of air or oxygen are calculated
Valve on value, the first nitrogen inlet duct of regulation and air or oxygen air inlet pipe, the flow of nitrogen and air or oxygen is adjusted
To the flow value calculated；
（3）It is sampled in sample tap, detects the oxygen concentration of tracheal strips gas, according to testing result, by adjusts the first nitrogen
Valve in gas air inlet pipe and air or oxygen air inlet pipe, uses endotracheal oxygen concentration and reaches technological requirement；
（4）The pressure regulation pressure of Self-driven pressure-adjusting valve is set as≤0.6Mpa；
（5）The valve on blow-off pipe is opened, after gas in surge tank is exhausted, the valve closed on blow-off pipe；Discharge gas
The volume of body is equal to n times of buffering tank volume, n >=2；
（6）Valve on online oxygen concentration analyzer and air or oxygen air inlet pipe is subjected to interlocking setting；
（7）The valve on the second nitrogen inlet duct is opened, nitrogen is passed through into filler bin, when pressure is 40-60KPa in filler bin
When, the valve closed on the second nitrogen inlet duct, it is 1-3KPa that filler bin, which is unloaded, and is depressed into pressure in storehouse；
（8）Step is performed repeatedly（7）In operation, number of times be no less than 3 times；
（9）Valve remote controlled on escape pipe is opened, the gas in surge tank is passed through into filler bin, when filler bin pressure
During for 40-60KPa, valve remote controlled on escape pipe is closed, it is 1-3KPa that filler bin, which is unloaded, and is depressed into pressure in storehouse；
（10）Step is performed repeatedly（9）In operation, number of times be 20-30 times；
（11）The valve on the second nitrogen inlet duct is opened, nitrogen is passed through into filler bin, when pressure is 40- in filler bin
During 60KPa, the valve closed on the second nitrogen inlet duct, it is 1-3KPa that filler bin, which is unloaded, and is depressed into pressure in storehouse；
（12）Step is performed repeatedly（7）In operation, number of times be no less than 3 times.
8. method according to claim 7, it is characterised in that step（7）And step（11）In, open the second nitrogen air inlet
Valve on pipe, nitrogen is passed through into filler bin, when pressure is 50KPa in filler bin, is closed on the second nitrogen inlet duct
Valve, it is 3KPa that filler bin, which is unloaded, and is depressed into pressure in storehouse；Step（8）And step（12）In, number of operations is 4 times.
9. method according to claim 7, it is characterised in that step（9）In, open valve remote controlled on escape pipe
Door, the gas in surge tank is passed through into filler bin, when filler bin pressure is 50KPa, is closed remote controlled on escape pipe
Valve, it is 3KPa that filler bin, which is unloaded, and is depressed into storehouse pressure；Step（10）In, number of operations is 25 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710580243.0A CN107225233B (en) | 2017-07-17 | 2017-07-17 | The device and method that a kind of pair of carbonyl process production powder is passivated |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710580243.0A CN107225233B (en) | 2017-07-17 | 2017-07-17 | The device and method that a kind of pair of carbonyl process production powder is passivated |
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| CN107225233A true CN107225233A (en) | 2017-10-03 |
| CN107225233B CN107225233B (en) | 2019-09-13 |
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Cited By (1)
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| CN108408790A (en) * | 2017-12-15 | 2018-08-17 | 金川集团股份有限公司 | A kind of processing unit and processing method of carbonyl iron dust adsorbed gas |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107225233B (en) | 2019-09-13 |
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Effective date of registration: 20240131 Address after: 737100 No. 2 Lanzhou Road, Beijing Road Street, Jinchuan District, Jinchang City, Gansu Province Patentee after: Jinchuan Group Nickel Cobalt Co.,Ltd. Country or region after: China Address before: 737103 No. 98, Jinchuan Road, Jinchang, Gansu Patentee before: JINCHUAN GROUP Co.,Ltd. Country or region before: China |
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