CN101948977A - Production method of vanadium nitride - Google Patents
Production method of vanadium nitride Download PDFInfo
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- CN101948977A CN101948977A CN 201010502425 CN201010502425A CN101948977A CN 101948977 A CN101948977 A CN 101948977A CN 201010502425 CN201010502425 CN 201010502425 CN 201010502425 A CN201010502425 A CN 201010502425A CN 101948977 A CN101948977 A CN 101948977A
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- vanadium nitride
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- production
- vanadium
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Links
- SKKMWRVAJNPLFY-UHFFFAOYSA-N azanylidynevanadium Chemical compound [V]#N SKKMWRVAJNPLFY-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 38
- 239000002994 raw material Substances 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 27
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000003054 catalyst Substances 0.000 claims abstract description 4
- 239000012495 reaction gas Substances 0.000 claims abstract description 4
- 230000001681 protective effect Effects 0.000 claims abstract description 3
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 11
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 239000000428 dust Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 229910000616 Ferromanganese Inorganic materials 0.000 claims description 3
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 3
- 229910000720 Silicomanganese Inorganic materials 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical group [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 6
- 238000007599 discharging Methods 0.000 abstract description 4
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 abstract 1
- 229910001935 vanadium oxide Inorganic materials 0.000 abstract 1
- 239000000047 product Substances 0.000 description 15
- 238000006722 reduction reaction Methods 0.000 description 10
- 229910052720 vanadium Inorganic materials 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 5
- 230000004523 agglutinating effect Effects 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910000742 Microalloyed steel Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000756 V alloy Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- PNXOJQQRXBVKEX-UHFFFAOYSA-N iron vanadium Chemical compound [V].[Fe] PNXOJQQRXBVKEX-UHFFFAOYSA-N 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Landscapes
- Compounds Of Iron (AREA)
Abstract
The invention relates to a production method of vanadium nitride. The production method includes that: powdery vanadium oxide, carbon powder and catalyst are mixed and pressed into raw material spheres, the surface of raw material sphere is wrapped with vanadium nitride superfine powder and is added into a vertical furnace continuously, meanwhile nitrogen is introduced into the vertical furnace to be taken as reaction gas, material is heated to 1200-1600 DEG C, reduction and nitridation reactions are taken place on the material in the temperature range, time duration is less than 40-60min, and the material is cooled to certain temperature under protective atmosphere and then is taken out the furnace, thus obtaining the vanadium nitride product. The invention can solve the problem of bonding while discharging which is caused by the vertical furnace; and the invention has the advantages that production cycle is short, utilization ratio of energy and gas is high, production efficiency is high, production mode is flexible, product quality is high, and production cost is low.
Description
(1) technical field
The present invention relates to a kind of production method of vanadium nitride, belong to the vanadium alloy production technical field.
(2) background technology
Vanadium nitride can substitute the production that vanadium iron is used for microalloyed steel.Vanadium nitride makes an addition to the comprehensive mechanical performances such as intensity, toughness, ductility and thermal fatigue resistance that can improve steel in the steel, and makes steel have good weldability.Reaching under the same intensity, adding vanadium nitride and save vanadium add-on 30-40%, and then reduced cost.
A large amount of industrial scale applications data show: increase the nitrogen content that contains in the vanadium steel, can improve the yield strength of steel, major cause is the increase of nitrogen in steel content, reduced grow up trend with alligatoring of precipitated phase, after the nitrogen pick-up, the precipitated phase particle attenuates in the steel, thereby gives full play to the effect of vanadium in steel.
In the vanadium nitride production process, need at first powdered barium oxide and carbon dust to be mixed back briquetting, moulding, in adding the material after the moulding in the stove continuously again, in stove, feed nitrogen simultaneously and make reaction gas, material is heated to 1200-1600 ℃, reduction and nitrogenizing reaction take place in this temperature province in material, and the time length makes finished product less than 4h after the cooling.
Can produce a large amount of CO gas in the reduction reaction process, because CO and N
2Have identical molecular weight, conventional horizontal stove is difficult to remove, thereby influences nitrogenizing reaction, and nitrogen content is reduced; Adopt shaft furnace to react, feed nitrogen, can effectively remove CO gas, make that nitridation conditions is good in the entire reaction stove, react more abundant at furnace bottom, thus the nitrogen content in the raising vanadium nitride.But owing in the production process of vanadium nitride, there is the softening stress-displacement stage of a material, material reacts simultaneously at remollescent, and this just makes that lumpy material is together inter-adhesive, and conventional horizontal stove is to adopt the alms bowl body to carry, volume of material is less in each alms bowl body, is easy to after the bonding take out; And when adopting the shaft furnace reaction, a large amount of mixing of materials together, softening back product bonding phenomenon is serious, is difficult to take out from shaft furnace, causes at last producing being forced to stop.
And conventional preparation method does not use any catalyzer, and its production cycle is long, inefficiency, energy consumption height, and material to be in time of softening stress-displacement stage long, also increased the weight of the finished product degree that bonds.
In addition, conventional preparation method in order to guarantee the apparent density of the finished product, uses binding agent in the preparation process, has increased the weight of the finished product bonding degree.
Because the existence of above-mentioned defective, though shaft furnace is a kind of a kind of effective means that improves nitrogen content in the vanadium nitride of advocating in the industry always, the defective in its practical application is perplexing manufacturing enterprise always, becomes the bottleneck of its development of restriction.
(3) summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, a kind of discharging adhesion problem that the puzzlement shaft furnace is produced that solves is provided, have with short production cycle, energy and gas utilising efficiency height, the production efficiency height, the mode of production is flexible, the product quality height, the production method of a kind of vanadium nitride that production cost is low.
The object of the present invention is achieved like this: a kind of production method of vanadium nitride; it is characterized in that: described method is to be pressed into raw material ball after powdered barium oxide, carbon dust and the catalyst mix; in raw material ball surface parcel vanadium nitride ultrafine powder; add it in shaft furnace continuously again; in shaft furnace, feed nitrogen simultaneously and make reaction gas; material is heated to 1200-1600 ℃; reduction and nitrogenizing reaction take place in this temperature province in material; time length is less than 40-60min; material is cooled to certain temperature under protective atmosphere, promptly obtain the vanadium nitride product after coming out of the stove then.
The particle diameter of described vanadium nitride ultrafine powder is 500 order to 800 orders.
Described catalyzer is FeO, Fe
2O
3, Fe
3O
4, MnO
2, in the raw material such as ferromanganese, ferrosilicon and ferro-silico-manganese one or more.
Described barium oxide is ammonium vanadate, V
2O
5, VO
2, V
2O
3And a kind of or their mixture of VO.
The described raw material ball density that is pressed into is greater than 3000kg/m
3
Described cooling temperature is 90-150 ℃.
Compared with prior art, characteristics of the present invention are as follows:
The firstth, the ultra-fine vanadium nitride finished powder of raw material ball parcel finished product with preparation makes it to form the high temperature protection film in process of production, avoids the agglutinating production method thereby reach.
Wrap up raw material ball with ultrafine powder, because ultrafine powder has certain fluidity, with process that raw material ball contacts in can form the layer of even integument on the raw material ball surface, and because pure vanadium nitride VN fusing point is 2350 ℃, the fusing point of finished product vanadium nitride is greater than 1650 ℃, in process of production, the ultra-fine vanadium nitride finished powder of integument is in solid-state all the time, thereby can play buffer action, prevents bonding, simultaneously because the film material is the finished product vanadium nitride, so can the quality of product not impacted.
The secondth, in raw material, add catalyzer, impel reduction reaction to carry out rapidly, thereby make material pass through to take place the agglutinating temperature in the very short time.
Catalyst system therefor is FeO, Fe
2O
3, Fe
3O
4, MnO
2, in the raw material such as ferromanganese, ferrosilicon and ferro-silico-manganese one or more.And its add-on is less than 1%, reaction is reduced into metallic iron, manganese and silicon after finishing, less than 0.5%, these materials be again parent (Fe) or alloying element (Mn and Si) in the postorder steelmaking process simultaneously to the influence of vanadium nitride final product quality, can the use of making steel not exerted an influence.
Because producing bonding is to produce in reduction process, also can alleviate the bonding phenomenon so shorten the recovery time, add catalyzer the reduction reaction time is greatly reduced, make material in less than the time of 1h by the reduction reaction district, thereby play the agglutinating effect that prevents.
In addition, shorten the reduction reaction time, can consumption of energy reduce save energy relatively owing to add catalyzer.(reduction reaction is thermo-negative reaction, needs consumed energy, and nitrogenizing reaction is thermopositive reaction, not consumed energy) following (1)-(3) are reduction reaction thermodynamical equilibrium equation formula, and (4) are nitrogenizing reaction thermodynamical equilibrium equation formula.
V
2O
3+5C＝2VC+3CO (1)
ΔG
13 0＝-655500-304.14T
2V
2O
3+VC＝5VO+CO (2)
ΔG
15 0＝270000-170.21T
VO+VC＝V
2C+CO (3)
ΔG
16 0＝323800-187.85T
VC+1/2N＝VN+C (4)
ΔG
18 0＝-112540+72.85T
The 3rd is the density that strengthens raw material ball in the operation of raw material system ball, makes it reduce volumetric shrinkage in process of production, removes binding agent simultaneously, plays the effect of anti-stick.
Adding additives can not reduce raw material ball bonding in process of production; Strengthen the density of raw material ball, can make to reduce the finished product volumetric shrinkage in the vanadium nitride production process, reduce destruction, adhesion problem is further solved the isolated film that first part did.
Simultaneously, because adding additives not can further reduce the water-content in the raw material, help cutting down the consumption of energy.
The present invention has solved the adhesion problem that shaft furnace is produced by above-mentioned three aspect actings in conjunction, because raw material ball has been eliminated adhesion problem in the process that descends, thereby make nitrogen gas stream in the process of upwards operation, have more rational distribution, the CO and the CO that make the reaction generation
2The diluted more in time discharge of gas impels faster and more reasonable that reduction reaction carries out; Nitrogenize simultaneously is more even, and the vanadium nitride quality of producing is higher.
In sum, the present invention can solve the discharging adhesion problem that the puzzlement shaft furnace is produced, have with short production cycle, energy and gas utilising efficiency height, the production efficiency height, the mode of production is flexible, product quality height, the advantage that production cost is low.
(4) embodiment
Embodiment 1
560kg is contained the FeO mixing of barium oxide and the 168kg carbon dust and the 0.8kg of vanadium 56%, be pressed into raw material ball, again with its surface parcel 600 purpose vanadium nitride ultrafine powders, raw material is added in the shaft furnace, material passes through in 1500 ℃ of zones, and time spent 45min comes out of the stove when being cooled to 150 ℃ then, obtain containing the vanadium nitride of the 398kg of 78.6%V, 17.46%N, 2.33%C, 0.015%S, 0.007%P, apparent density 3560kg/m
3
Embodiment 2
The Fe that 735kg is contained vanadium 64.1% barium oxide and 198kg carbon dust and 0.9kg
2O
3Mix, compression moulding, again with its surface parcel 700 purpose vanadium nitride ultrafine powders, raw material is added in the shaft furnace, material passes through time spent 55min in 1490 ℃ of zones, come out of the stove when being cooled to 100 ℃ then, obtain containing the vanadium nitride of the 601kg of 78.3%V, 16.95%N, 3.45%C, 0.017%S, 0.008%P, apparent density 3680kg/m
3
Embodiment 3
850kg is contained vanadium 56% barium oxide and 255kg carbon dust and 1.1kg Fe
3O
4Mix, compression moulding, again with its surface parcel 800 purpose vanadium nitride ultrafine powders, raw material is added in the shaft furnace, material passes through time spent 40min in 1520 ℃ of zones, come out of the stove when being cooled to 90 ℃ then, obtain containing the vanadium nitride of the 604kg of 78.8%V, 17.85%N, 1.98%C, 0.009%S, 0.017%P, apparent density 3390kg/m
3
Vanadium nitride ultrafine powder in the foregoing description is that the vanadium nitride finished product of GB regulation VN12 or VN16 grinds by equipment such as ball mill, Raymond mill, airflow milling.
System ball process is selected the hydraulic pressure apparatus for making pearl ball for use, and ball-making pressure is greater than 250 tons.The raw material ball density that is pressed into is greater than 3000kg/m
3
Above-mentioned raw materials must 200 orders are following to be used through grinding into.
Above-mentioned shaft furnace is liner for implementing resistance heading furnace, heating in medium frequency stove by carbonaceous material.
Described shaft furnace lining carbonaceous material is a graphite.
And the present invention has following obvious advantage:
1. material is added in the stove by top continuously, and by the regularly discharging of bottom discharger, stove does not have the materials from bonding problem in normal pressure work.
2. technology is reasonable, and facility compact is rationally utilized nitrogen and heat, energy consumption low production steady quality.
Utilize the vanadium nitride product of technical scheme preparation of the present invention to contain 77-81%V, 14-18%N, apparent density is greater than 3000Kg/m3。
Claims (6)
1. the production method of a vanadium nitride; it is characterized in that: described method is to be pressed into raw material ball after powdered barium oxide, carbon dust and the catalyst mix; in raw material ball surface parcel vanadium nitride ultrafine powder; add it in shaft furnace continuously again; in shaft furnace, feed nitrogen simultaneously and make reaction gas; material is heated to 1200-1600 ℃; reduction and nitrogenizing reaction take place in this temperature province in material; time length is less than 40-60min; material is cooled to certain temperature under protective atmosphere, promptly obtain the vanadium nitride product after coming out of the stove then.
2. the production method of a kind of vanadium nitride according to claim 1, it is characterized in that: the particle diameter of described vanadium nitride ultrafine powder is 500 order to 800 orders.
3. the production method of a kind of vanadium nitride according to claim 1, it is characterized in that: described catalyzer is FeO, Fe
2O
3, Fe
3O
4, MnO
2, in the raw material such as ferromanganese, ferrosilicon and ferro-silico-manganese one or more.
4. the production method of a kind of vanadium nitride according to claim 1, it is characterized in that: described barium oxide is ammonium vanadate, V
2O
5, VO
2, V
2O
3And a kind of or their mixture of VO.
5. the production method of a kind of vanadium nitride according to claim 1, it is characterized in that: the described raw material ball density that is pressed into is greater than 3000kg/m
3
6. the production method of a kind of vanadium nitride according to claim 1, it is characterized in that: described cooling temperature is 90-150 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105024254A CN101948977B (en) | 2010-09-30 | 2010-09-30 | Production method of vanadium nitride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105024254A CN101948977B (en) | 2010-09-30 | 2010-09-30 | Production method of vanadium nitride |
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| Publication Number | Publication Date |
|---|---|
| CN101948977A true CN101948977A (en) | 2011-01-19 |
| CN101948977B CN101948977B (en) | 2011-11-02 |
Family
ID=43452600
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|---|---|---|---|
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115046A (en) * | 2011-01-26 | 2011-07-06 | 河北钢铁股份有限公司承德分公司 | Method for ensuring shaft furnace device to continuously produce vanadium nitride |
| WO2012139409A1 (en) * | 2011-04-12 | 2012-10-18 | Zheng Jianwei | Post-sinter conglutination and oxidation-preventative vanadium-nitrogen alloy preparation method |
| CN103602814A (en) * | 2013-11-28 | 2014-02-26 | 武汉科技大学 | Method for preparing vanadium nitride alloy |
| CN105013530A (en) * | 2014-04-29 | 2015-11-04 | 安徽天港生物科技有限公司 | Nitride alloy biological catalyst and preparation method thereof |
| CN105238982A (en) * | 2015-10-10 | 2016-01-13 | 江苏渝鑫合金科技有限公司 | Silicon vanadium nitrogen alloy and preparation method thereof |
| CN105838970A (en) * | 2016-04-15 | 2016-08-10 | 河北钢铁股份有限公司承德分公司 | Preparation method of high-nitrogen vanadium nitride |
| CN107381515A (en) * | 2017-08-08 | 2017-11-24 | 陕西科技大学 | A kind of preparation method and product of vanadium nitride elctro-catalyst |
| CN109234602A (en) * | 2018-08-30 | 2019-01-18 | 成都锦钛精工科技有限公司 | Carbon chromium nitride vanadium alloy and preparation method thereof |
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| US4040814A (en) * | 1975-12-23 | 1977-08-09 | Union Carbide Corporation | Method of producing a composition containing a large amount of vanadium and nitrogen |
| CN85103106A (en) * | 1985-04-26 | 1986-10-22 | 北京钢铁学院 | Niobium slag alloying additive and the application in steel-making thereof |
-
2010
- 2010-09-30 CN CN2010105024254A patent/CN101948977B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4040814A (en) * | 1975-12-23 | 1977-08-09 | Union Carbide Corporation | Method of producing a composition containing a large amount of vanadium and nitrogen |
| CN85103106A (en) * | 1985-04-26 | 1986-10-22 | 北京钢铁学院 | Niobium slag alloying additive and the application in steel-making thereof |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115046A (en) * | 2011-01-26 | 2011-07-06 | 河北钢铁股份有限公司承德分公司 | Method for ensuring shaft furnace device to continuously produce vanadium nitride |
| CN102115046B (en) * | 2011-01-26 | 2012-09-26 | 河北钢铁股份有限公司承德分公司 | Method for ensuring shaft furnace device to continuously produce vanadium nitride |
| AU2012243313B2 (en) * | 2011-04-12 | 2015-07-02 | Jianwei Zheng | Post-sinter conglutination and oxidation-preventative vanadium-nitrogen alloy preparation method |
| EP2698344A1 (en) * | 2011-04-12 | 2014-02-19 | Jianwei Zheng | Post-sinter conglutination and oxidation-preventative vanadium-nitrogen alloy preparation method |
| EP2698344A4 (en) * | 2011-04-12 | 2014-10-29 | Jianwei Zheng | Post-sinter conglutination and oxidation-preventative vanadium-nitrogen alloy preparation method |
| WO2012139409A1 (en) * | 2011-04-12 | 2012-10-18 | Zheng Jianwei | Post-sinter conglutination and oxidation-preventative vanadium-nitrogen alloy preparation method |
| CN103602814A (en) * | 2013-11-28 | 2014-02-26 | 武汉科技大学 | Method for preparing vanadium nitride alloy |
| CN103602814B (en) * | 2013-11-28 | 2015-07-29 | 武汉科技大学 | A kind of preparation method of alloy of vanadium nitride |
| CN105013530A (en) * | 2014-04-29 | 2015-11-04 | 安徽天港生物科技有限公司 | Nitride alloy biological catalyst and preparation method thereof |
| CN105238982A (en) * | 2015-10-10 | 2016-01-13 | 江苏渝鑫合金科技有限公司 | Silicon vanadium nitrogen alloy and preparation method thereof |
| CN105838970A (en) * | 2016-04-15 | 2016-08-10 | 河北钢铁股份有限公司承德分公司 | Preparation method of high-nitrogen vanadium nitride |
| CN107381515A (en) * | 2017-08-08 | 2017-11-24 | 陕西科技大学 | A kind of preparation method and product of vanadium nitride elctro-catalyst |
| CN109234602A (en) * | 2018-08-30 | 2019-01-18 | 成都锦钛精工科技有限公司 | Carbon chromium nitride vanadium alloy and preparation method thereof |
| CN109234602B (en) * | 2018-08-30 | 2020-02-21 | 成都锦钛精工科技有限公司 | Chromium vanadium carbonitride alloy and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN101948977B (en) | 2011-11-02 |
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Denomination of invention: Method for preparing vanadium nitride and device Effective date of registration: 20150504 Granted publication date: 20111102 Pledgee: Shanghai Hai Shi Rong Industrial Co., Ltd. Pledgor: Jiangyin Changxing Vanadium & Nitrogen New Material Co., Ltd. Registration number: 2015320000004 |
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Date of cancellation: 20171110 Granted publication date: 20111102 Pledgee: Shanghai Hai Shi Rong Industrial Co., Ltd. Pledgor: Jiangyin Changxing Vanadium & Nitrogen New Material Co., Ltd. Registration number: 2015320000004 |
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Effective date of registration: 20171212 Address after: 214434 room D407, No. 159, Chengjiang Middle Road, Jiangyin, Jiangsu Patentee after: Jiangyin Zhong won nonferrous metal new material Co., Ltd. Address before: No. 126, Yuecheng lunar mountain road, Jiangyin, Jiangsu, Jiangsu Patentee before: Jiangyin Changxing Vanadium & Nitrogen New Material Co., Ltd. |
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Denomination of invention: Method for preparing vanadium nitride and device Effective date of registration: 20190429 Granted publication date: 20111102 Pledgee: Jiangyin Qinwangshan Industrial Park Investment Development Co., Ltd. Pledgor: Jiangyin Zhong won nonferrous metal new material Co., Ltd. Registration number: 2019320010019 |