CN107225233B - The device and method that a kind of pair of carbonyl process production powder is passivated - Google Patents
The device and method that a kind of pair of carbonyl process production powder is passivated Download PDFInfo
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- CN107225233B CN107225233B CN201710580243.0A CN201710580243A CN107225233B CN 107225233 B CN107225233 B CN 107225233B CN 201710580243 A CN201710580243 A CN 201710580243A CN 107225233 B CN107225233 B CN 107225233B
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- inlet duct
- oxygen
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000000843 powder Substances 0.000 title claims abstract description 23
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 178
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 89
- 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 53
- 239000007789 gas Substances 0.000 claims abstract description 27
- 239000010865 sewage Substances 0.000 claims abstract description 18
- 230000000994 depressogenic effect Effects 0.000 claims description 13
- 230000003139 buffering effect Effects 0.000 claims description 6
- 239000003570 air Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 claims description 3
- 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
- 230000008901 benefit Effects 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- -1 carbonyl iron Chemical class 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
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 150000001728 carbonyl compounds Chemical class 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram 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
- 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 invention discloses the devices that a kind of pair of carbonyl process production powder is passivated, the device includes surge tank, filler bin, escape pipe, sewage 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 connect, the other end is connect with filler bin, the connection of the bottom of sewage pipe and surge tank, air or oxygen air inlet pipe and the first nitrogen inlet duct are connect with the side wall of surge tank respectively, second nitrogen inlet duct is connect with filler bin, in escape pipe, sewage pipe, air or oxygen air inlet pipe, valve is equipped on first nitrogen inlet duct and the second nitrogen inlet duct, sample tap is equipped on escape pipe between the valve and surge tank on escape pipe.This invention ensures that the stability of passivation gas concentration, effectively reduces and control the mixing of CO and oxygen by the way that reasonable passivation mode is arranged, the security reliability of operation has been ensured.
Description
Technical field
The invention belongs to carbonyl technical field of metallurgical production, and in particular to a kind of pair of carbonyl process production powder carries out blunt with oxygen
The device and method of change.
Background technique
In the decomposition production process of the carbonyl compounds such as carbonyl iron, the powder pyrolytic of output at fine particle, particle
Surface-active is big, while easily CO absorption gas, has the risk of potential industrial accident, therefore generally uses nitrogen in production process
Length is blown or boosting-pressure release mode is passivated disinfection treatment to metal carbonyl powder.The metal carbonyl powder after nitrogen inerting
The surface oxidation-resistant at end increases, but there are also shortcomings for the application of special dimension.Meanwhile only by nitrogen inerting
Metal carbonyl powder resistance to settling also have it is to be strengthened.It sinks to further increase 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.
Summary of the invention
In view of the above existing problems in the prior art, the present invention provides the dresses that a kind of pair of carbonyl process production powder is passivated
It sets and method, the apparatus structure is simple, and this method can effectively promote the inoxidizability and resistance to settling of metal powder.
In order to achieve the above object, the invention adopts the following technical scheme:
The device that a kind of pair of carbonyl process production powder is passivated, which is characterized in that the device includes surge tank, powder
Storehouse, escape pipe, sewage pipe, air or oxygen air inlet pipe, the first nitrogen inlet duct and the second nitrogen inlet duct, the escape pipe
One end and the top of surge tank connect, and the other end is connect with filler bin；The connection of the bottom of the sewage pipe and surge tank；The sky
Gas or oxygen intake pipe and the first nitrogen inlet duct are connect with the side wall of surge tank respectively；Second nitrogen inlet duct and powder
Storehouse connection；It is all provided on escape pipe, sewage pipe, air or oxygen air inlet pipe, the first nitrogen inlet duct and the second nitrogen inlet duct
There is valve；Sample tap is equipped on escape pipe between the valve and surge tank on the escape pipe.
According to above-mentioned device, which is characterized in that the air or oxygen air inlet pipe is by air or oxygen air inlet pipe master
Pipeline and several air or oxygen air inlet pipe subtube compositions, one end of the air or oxygen air inlet pipe subtube and air
Or the connection of oxygen intake pipe main pipeline, the other end are connect with surge tank；First nitrogen inlet duct is by the first nitrogen air inlet
Pipe main pipeline and several first nitrogen inlet duct subtube compositions, one end and first of the first nitrogen inlet duct subtube
The connection of nitrogen inlet duct main pipeline, the other end are connect with surge tank；Several air or oxygen air inlet pipe subtubes and
Several first nitrogen inlet duct subtubes are uniformly distributed along the circumferential direction of buffering tank.
According to above-mentioned device, which is characterized in that on the escape pipe be equipped with can in air or oxygen air inlet pipe
The online oxygen concentration analyzer of valve interlocking.
According to above-mentioned device, which is characterized 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, which is characterized in that be all provided on the air or oxygen air inlet pipe and the first nitrogen inlet duct
There is flowmeter.
According to above-mentioned device, which is characterized in that the surge tank is equipped with and air or oxygen air inlet pipe and the first nitrogen
The pressure gauge of valve interlocking in gas air inlet pipe.
A method of carbonyl process production powder is passivated using above-mentioned device, which is characterized in that this method packet
Include following steps:
(1) all valves are closed；
(2) according to the technique requirement of the oxygen concentration for the gas for being passed through filler bin, the stream of theoretical nitrogen, air or oxygen is calculated
Magnitude adjusts the valve in the first nitrogen inlet duct and air or oxygen air inlet pipe, by the flow tune of nitrogen and air or oxygen
The whole flow value to calculating；
(3) it is sampled in sample tap, detects the oxygen concentration of intratracheal gas, according to testing result, by adjusting the
Valve on one nitrogen inlet duct and air or oxygen air inlet pipe uses endotracheal oxygen concentration and reaches technique requirement；
(4) the pressure regulation pressure of Self-driven pressure-adjusting valve is set as≤0.6Mpa；
(5) valve on sewage pipe is opened, after gas in surge tank is exhausted, closes the valve on sewage pipe；Row
The volume of gas is equal to n times of buffering tank volume, n >=2 out；
(6) valve on online oxygen concentration analyzer and air or oxygen air inlet pipe is subjected to interlocking setting；
(7) valve on the second nitrogen inlet duct is opened, nitrogen is passed through into filler bin, when pressure is 40- in filler bin
When 60KPa, the valve on the second nitrogen inlet duct is closed, it is 1-3KPa that filler bin, which is unloaded, and is depressed into pressure in storehouse；
(8) operation in step (7) is executed repeatedly, and number is no less than 3 times；
(9) valve remote controlled on escape pipe is opened, the gas being passed through in surge tank into filler bin works as filler bin
When pressure is 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) operation in step (9) is executed repeatedly, and number is 20-30 times；
(11) valve on the second nitrogen inlet duct is opened, nitrogen is passed through into filler bin, when pressure is 40- in filler bin
When 60KPa, the valve on the second nitrogen inlet duct is closed, it is 1-3KPa that filler bin, which is unloaded, and is depressed into pressure in storehouse；
(12) operation in step (11) is executed repeatedly, and number is no less than 3 times.
According to above-mentioned method, which is characterized in that in step (7) and step (11), open on the second nitrogen inlet duct
Valve is passed through nitrogen into filler bin, when pressure is 50KPa in filler bin, closes the valve on the second nitrogen inlet duct, will
It is 3KPa that filler bin, which unloads and is depressed into pressure in storehouse,；In step (8) and step (12), number of operations is 4 times.
According to above-mentioned method, which is characterized in that in step (9), open valve remote controlled on escape pipe, Xiang Fen
The gas being passed through in surge tank in feed bin closes valve remote controlled on escape pipe when filler bin pressure is 50KPa,
It is 3KPa that filler bin, which is unloaded, and is depressed into pressure in storehouse；In step (10), number of operations is 25 times.
The present invention has the advantages that compared with the prior art
The present invention detects the side such as oxygen concentration with throughput, online oxygen concentration analyzer and sample tap by theoretical calculation confirmation
Formula ensure that stabilization and validity with oxygen concentration；Effectively subtracted by the way that reasonable nitrogen-is arranged with oxygen-nitrogen disinfection passivation mode
Less and control CO and oxygen mixing, ensured operation security reliability；By reasonably matching oxygen concentration gaseous mixture to carbonyl
Metal powder carries out disinfection passivation operation, and the inoxidizability and resistance to settling of powder is effectively promoted, has expanded metal carbonyl
The utilization benefit of powder.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the device of the invention.
Specific embodiment
As shown in Figure 1, of the invention to the device that is passivated of carbonyl process production powder, including surge tank 1, filler bin 2,
Escape pipe 3, sewage 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 connect with the top of surge tank 1, and the other end is connect with filler bin 2.Sewage pipe 4 and surge tank 1
Bottom connection.Air or oxygen air inlet pipe 5 and the first nitrogen inlet duct 6 are connect with the side wall of surge tank 1 respectively.Particularly,
Air or oxygen air inlet pipe 5 is made of air or oxygen air inlet pipe main pipeline and several air or oxygen air inlet pipe subtubes,
One end of air or oxygen air inlet pipe subtube is connect with air or oxygen air inlet pipe main pipeline, and the other end is connect with surge tank 1；
First nitrogen inlet duct 6 is made of the first nitrogen inlet duct main pipeline and several first nitrogen inlet duct subtubes, the first nitrogen
One end of gas air inlet pipe subtube is connect with the first nitrogen inlet duct main pipeline, and the other end is connect with surge tank 1；Several air
Or oxygen intake pipe subtube and several first nitrogen inlet duct subtubes are uniformly distributed along the circumferential direction of 1 tank body of surge tank, benefit
It is uniformly mixed between gas.Second nitrogen inlet duct 7 is connect with filler bin 2.Escape pipe 3, sewage pipe 4, air or oxygen into
Valve is equipped on tracheae 5, the first nitrogen inlet duct 6 and the second nitrogen inlet duct 7.It is equipped with sample tap 8 on escape pipe 3, takes
Sample mouth is arranged between the valve on the junction and escape pipe of surge tank 1 and escape pipe 3.
It is equipped with online oxygen concentration analyzer 9, analysis data feedback to control system interface on escape pipe 3, and records oxygen
Concentration variation tendency, 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 on the first nitrogen inlet duct 6.
Meanwhile surge tank 1 is equipped with and the valve interlocking in air or oxygen air inlet pipe 5 and the first nitrogen inlet duct 6
Pressure gauge 13, the valve when buffering pressure inside the tank more than limit value, in air or oxygen air inlet pipe 5 and the first nitrogen inlet duct 6
It is automatically closed.
The method being passivated to carbonyl process production powder of the invention includes the following steps:
(1) all valves are closed.
(2) according to the technique requirement of the oxygen concentration for the gas for being passed through filler bin, the stream of theoretical nitrogen, air or oxygen is calculated
Magnitude adjusts the valve 10 on the valve 14 and air or oxygen air inlet pipe 5 on the first nitrogen inlet duct 6, 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 for detecting gas in escape pipe 3 passes through adjusting according to testing result
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 technique requirement.
(4) the pressure regulation pressure of Self-driven pressure-adjusting valve 11 is set as≤0.6Mpa.
(5) valve 15 on sewage pipe 4 is opened, after gas in surge tank 1 is exhausted, closes the valve on sewage pipe 4
Door 15.The volume that gas is discharged is equal to n times of buffering tank volume, n >=2.
(6) online oxygen concentration analyzer 9 is subjected to interlocking setting with the valve 10 in air or oxygen air inlet pipe 5.It carries out
The purpose of interlocking setting is, when the oxygen concentration that the oxygen concentration shown on online oxygen concentration analyzer is required compared with technique generates fluctuation
When, interlocking setting plays a role, and the valve 10 controlled in air or oxygen air inlet pipe 5 is finely adjusted, and maintains out the steady of gas concentration
It is qualitative.
(7) valve 16 on the second nitrogen inlet duct 7 is opened, nitrogen is passed through into filler bin 2, carries out the operation that builds the pressure, when
When pressure is 40-60KPa in filler bin 2, the valve 16 on the second nitrogen inlet duct 7 is closed, carries out unloading press operation, by filler bin
2 unload that be depressed into storehouse pressure be 1-3KPa.
(8) operation in step (7) is executed repeatedly, and number is no less than 3 times.
(9) valve 12 remote controlled on escape pipe 3 is opened, the gas being passed through in surge tank into filler bin 2 carries out
Build the pressure operation, when 2 pressure of filler bin 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) operation in step (9) is executed repeatedly, and number is 20-30 times.
(11) valve 16 on the second nitrogen inlet duct 7 is opened, nitrogen is passed through into filler bin 2, carries out the operation that builds the pressure, when
When pressure is 40-60KPa in filler bin 2, the valve 16 on the second nitrogen inlet duct 7 is closed, carries out unloading press operation, by filler bin
2 unload that be depressed into storehouse pressure be 1-3KPa.
(12) operation in step (11) is executed repeatedly, and number is no less than 3 times.
In actual operation, when being passed through nitrogen into filler bin, the pressure that builds the pressure is 50KPa, and unloading pressure pressure is 3KPa, repeatedly
The number of operation is 4 times；When the gas being passed through in surge tank to filler bin, the pressure that builds the pressure is 50KPa, and unloading pressure pressure is 3KPa,
The number operated repeatedly is 25 times.
Claims (5)
1. the device that a kind of pair of carbonyl process production powder is passivated, which is characterized in that the device include surge tank, filler bin,
Escape pipe, sewage 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 connect with the top of surge tank, and the other end is connect with filler bin；The connection of the bottom of the sewage pipe and surge tank；The air
Or oxygen intake pipe and the first nitrogen inlet duct are connect with the side wall of surge tank respectively；Second nitrogen inlet duct and filler bin
Connection；It is equipped on escape pipe, sewage pipe, air or oxygen air inlet pipe, the first nitrogen inlet duct and the second nitrogen inlet duct
Valve；Sample tap is equipped on escape pipe between the valve and surge tank on the escape pipe；It is equipped on the escape pipe
It can be two with the online oxygen concentration analyzer of air or oxygen air inlet pipe upper valve gate interlock, the valve on the escape pipe,
Respectively Self-driven pressure-adjusting valve and remote controlled valve, in the air or oxygen air inlet pipe and the first nitrogen inlet duct
Equipped with flowmeter, the surge tank is equipped with the pressure with the valve interlocking in air or oxygen air inlet pipe and the first nitrogen inlet duct
Power meter；The air or oxygen air inlet pipe is by air or oxygen air inlet pipe main pipeline and several air or oxygen air inlet pipe point
Pipeline composition.
2. the apparatus according to claim 1, which is characterized in that one end of the air or oxygen air inlet pipe subtube and sky
Gas or the connection of oxygen intake pipe main pipeline, the other end are connect with surge tank；First nitrogen inlet duct by the first nitrogen into
Tracheae main pipeline and several first nitrogen inlet duct subtubes composition, one end of the first nitrogen inlet duct subtube and the
The connection of one nitrogen inlet duct main pipeline, the other end are connect with surge tank；Several air or oxygen air inlet pipe subtubes
It is uniformly distributed with several first nitrogen inlet duct subtubes along the circumferential direction of buffering tank.
3. a kind of method being passivated using device described in claim 1 to carbonyl process production powder, which is characterized in that should
Method includes the following steps:
(1) all valves are closed；
(2) according to the technique requirement of the oxygen concentration for the gas for being passed through filler bin, the flow of theoretical nitrogen, air or oxygen is calculated
Value adjusts the valve in the first nitrogen inlet duct and air or oxygen air inlet pipe, and the flow of nitrogen and air or oxygen is adjusted
To the flow value of calculating；
(3) it is sampled in sample tap, detects the oxygen concentration of intratracheal gas, according to testing result, by adjusting the first nitrogen
Valve in gas air inlet pipe and air or oxygen air inlet pipe uses endotracheal oxygen concentration and reaches technique requirement；
(4) the pressure regulation pressure of Self-driven pressure-adjusting valve is set as≤0.6Mpa；
(5) valve on sewage pipe is opened, after gas in surge tank is exhausted, closes the valve on sewage pipe；Gas is discharged
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) 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 on the second nitrogen inlet duct is closed, it is 1-3KPa that filler bin, which is unloaded, and is depressed into pressure in storehouse；
(8) operation in step (7) is executed repeatedly, and number is no less than 3 times；
(9) valve remote controlled on escape pipe, the gas being passed through in surge tank into filler bin, when filler bin pressure are opened
When 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) operation in step (9) is executed repeatedly, and number is 20-30 times；
(11) valve on the second nitrogen inlet duct is opened, nitrogen is passed through into filler bin, when pressure is 40- in filler bin
When 60KPa, the valve on the second nitrogen inlet duct is closed, it is 1-3KPa that filler bin, which is unloaded, and is depressed into pressure in storehouse；
(12) operation in step (7) is executed repeatedly, and number is no less than 3 times.
4. according to the method described in claim 3, it is characterized in that, opening the second nitrogen air inlet in step (7) and step (11)
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；In step (8) and step (12), number of operations is 4 times；
5. according to the method described in claim 3, it is characterized in that, opening valve remote controlled on escape pipe in step (9)
Door, the gas being passed through in surge tank into filler bin are closed remote controlled on escape pipe when filler bin pressure is 50KPa
Valve, it is 3KPa that filler bin, which is unloaded, and is depressed into storehouse pressure；In step (10), number of operations is 25 times.
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| 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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| CN107225233B true CN107225233B (en) | 2019-09-13 |
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| CN108408790B (en) * | 2017-12-15 | 2019-08-06 | 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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| CN107225233A (en) | 2017-10-03 |
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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 |