CN1274601C - Method for preparing vanadium nitride and device - Google Patents
Method for preparing vanadium nitride and device Download PDFInfo
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- CN1274601C CN1274601C CN 200410023094 CN200410023094A CN1274601C CN 1274601 C CN1274601 C CN 1274601C CN 200410023094 CN200410023094 CN 200410023094 CN 200410023094 A CN200410023094 A CN 200410023094A CN 1274601 C CN1274601 C CN 1274601C
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- vanadium
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Abstract
The present invention relates to a production method and a device for vanadium nitride, belongs to the technical field of vanadium alloy, particularly to a method for intermittently producing vanadium nitride industrially and a device thereof. The present invention aims to provide a method, in which vanadium oxide ground to be powder and carbon power are used as raw materials, adhesives are added to the raw materials and the vanadium nitride is produced by the heating of an industrial microwave oven, and the new production method and the device have the advantages of high thermal efficiency, short heating time and easy control and can obviously decrease the energy consumption of production processes. The present invention is characterized in that vanadium containing oxide, active carbon or graphite powder and adhesives are uniformly mixed according to proportions, are pressed into blocks and are formed, and the formed materials are placed in a purpose-made industrial microwave heating oven. Gas is continuously exhausted, and vacuum degree is kept. The materials are prereduced, carbonized, nitrided, naturally cooled down and discharged into products, and the products are mainly used as the additives of various kinds of alloy steel containing vanadium. The device has the main advantages of intermittent production, high thermal efficiency and low energy consumption, and is heated by microwaves.
Description
Technical field
The invention belongs to the new installation of industrial production vanadium nitride.
Background technology
At present, aspect the production unit of vanadium nitride, also do not adopt the precedent of industrial microwave oven.
Summary of the invention
The purpose of this invention is to provide heat industrial microwave oven in a kind of vanadium nitride production.The present invention realizes in the following way: heating installation industrial microwave oven during a kind of vanadium nitride is produced, it has the body of heater 1 that insulating brick is built into, it in it burner hearth 4, microwave input pipe 2 is arranged at the top, body of heater 1 one sides have porthole 3, it is characterized in that having in this burner hearth 4 job pot 5 of storage material, and nitrogen grid distributor 6 is arranged at the bottom of this crucible 5, have inflated with nitrogen pipe 7 to stretch into crucible 5 bottoms on the travelling car 8, body of heater 1 an outer side has the travelling car 8 and the track thereof of loading and unloading material; Body of heater 1 used insulating brick is silicate or alumina bubble brick, and crucible 5 used refractory brick are high alumina hollow ball brick or corundum brick; It also has the PLC automatic control system of reinforced discharging that vanadium nitride produces and Heating temperature time, furnace pressure processing parameter; Above-mentioned crucible 5 places on the travelling car 8; It also has makes the automatic control system of travelling car 8 along track turnover body of heater 1.Compare with the production unit of existing industrial production vanadium nitride, advantage of the present invention is as follows: (1) is because microwave heating is to cause that by the inside that electromagnetic energy is penetrated into medium with the form of ripple dielectric loss generates heat, need not pass through thermal conduction, so the thermo-efficiency height, current consumption has only 1/10th of conventional vacuum electrical heater.(2) the microwave heating temperature rise rate is fast, and significantly shorten heat-up time, therefore saves the energy, and production efficiency also significantly improves.(3) owing to microwave heating is that the medium internal loss generates heat, therefore having only the regional area that contacts with material is the high-temperature zone, and all the other local temperature significantly reduce, and therefore adopts thin thermal insulation layer can make furnace wall temperature remain on normal temperature, need not cooling provision.The service life of equipment significant prolongation.(4) because need not be through thermal conduction heating, so body of heater makes and can simplify, and vacuum is easy to keep, and equipment is easy to operate and control.The present invention adopts microwave heating thermo-efficiency height, and compare with the intermittent type vacuum furnace that adopts in the past heat-up time, can be reduced to 3.5-8 hour from tens hours to tens of hours, and current consumption is 1/10th of conventional vacuum process furnace.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Now the present invention is described in further detail in conjunction with the accompanying drawings.With reference to Fig. 1.
Embodiment 1:
With 900kg purity 98.56% the V that wears into 120 purposes 90%
2O
5Be pressed into the piece of φ 80 * 30mm behind powder, 332kg Graphite Powder 99 and 1% the carboxymethyl cellulose aqueous solution 125kg mixing.To expect that again piece puts into crucible 5, push in the microwave oven automatically by Controlling System.After fire door was closed, sealed, vacuum system began to start, bleed.When vacuum tightness reaches 40pa, begin heating, 650 ℃ of prereduction 1 hour, then 1400 ℃ of carbonizations 2 hours.Carbonization stops to bleed after finishing, and feeds nitrogen, 1000 ℃ of nitridings 2 hours.Heating is come out of the stove when product naturally cools to 180 ℃ in stove after finishing automatically, and obtaining the 617kg apparent density is 3810g/cm
3, contain V78.32%, N12.22%, C6.41%, the vanadium nitride of O1.55%.
Embodiment 2:
With 700kg purity 98.32% the V that wears into 120 orders 90%
2O
5Be pressed into the piece of φ 80 * 30mm behind powder, 250kg Graphite Powder 99 and 1% the carboxymethyl cellulose aqueous solution 88kg mixing.To expect that again piece puts into crucible 5, push in the microwave oven automatically by Controlling System.After fire door was closed, sealed, vacuum system began to start, bleed.When vacuum tightness reaches 100pa, begin heating, 600 ℃ of prereduction 0.5 hour, then 1300 ℃ of carbonizations 1.5 hours.Carbonization stops to bleed after finishing, and feeds nitrogen, 1100 ℃ of nitridings 2.5 hours.Heating is come out of the stove when product naturally cools to 170 ℃ in stove after finishing automatically, obtains 486kg apparent density 3570g/cm
3, contain V77.89%, N9.05%, C8.15%, the vanadium nitride of O3.25%.
Embodiment 3:
With 1000kg purity 98.17% the V that wears into 200 orders 80%
2O
5Be pressed into the piece of φ 80 * 30mm behind powder, 333kg Graphite Powder 99 and 1% the carboxymethyl cellulose aqueous solution 130kg mixing.To expect that again piece puts into crucible 5, push in the microwave oven automatically by Controlling System.After fire door was closed, sealed, vacuum system began to start, bleed.When vacuum tightness reaches 30pa, begin heating, 680 ℃ of prereduction 1 hour, then 1450 ℃ of carbonizations 2 hours.Carbonization stops to bleed after finishing, and feeds nitrogen, 1200 ℃ of nitridings 3.5 hours.Heating is come out of the stove when product naturally cools to 150 ℃ in stove after finishing automatically, and obtaining the 682kg apparent density is 4170g/cm
3, contain V79.28%, N13.34%, C5.07%, the vanadium nitride of O0.81%.
The vanadium nitride product that above-mentioned application present device makes contains V76-80%, N7-14%, and C5-12%, apparent density is 3100-4200g/cm
3
Claims (1)
1, heating installation industrial microwave oven during a kind of vanadium nitride is produced, it has the body of heater [1] that insulating brick is built into, it in it burner hearth [4], microwave input pipe [2] is arranged at the top, body of heater [1] one side has porthole [3], it is characterized in that having in this burner hearth [4] job pot [5] of storage material, and nitrogen grid distributor [6] is arranged at the bottom of this crucible [5], have inflated with nitrogen pipe [7] to stretch into crucible [5] bottom on the travelling car [8], the outer side of body of heater [1] has the travelling car [8] and the track thereof of loading and unloading material; The used insulating brick of body of heater [1] is silicate or alumina bubble brick, and the used refractory brick of crucible [5] is high alumina hollow ball brick or corundum brick; It also has the PLC automatic control system of reinforced discharging that vanadium nitride produces and Heating temperature time, furnace pressure processing parameter; Above-mentioned crucible [5] places on the travelling car [8]; It also has makes the automatic control system of travelling car [8] along track turnover body of heater [1].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410023094 CN1274601C (en) | 2004-04-06 | 2004-04-06 | Method for preparing vanadium nitride and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410023094 CN1274601C (en) | 2004-04-06 | 2004-04-06 | Method for preparing vanadium nitride and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1562770A CN1562770A (en) | 2005-01-12 |
| CN1274601C true CN1274601C (en) | 2006-09-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410023094 Expired - Fee Related CN1274601C (en) | 2004-04-06 | 2004-04-06 | Method for preparing vanadium nitride and device |
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| Country | Link |
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| CN (1) | CN1274601C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080140A (en) * | 2010-03-30 | 2011-06-01 | 湖北钟祥华帮科技有限公司 | Low-energy-consumption reduction nitridation production process of vanadium oxide |
| CN102220454B (en) * | 2010-04-19 | 2013-04-10 | 蔡惜辉 | Steelmaking method of microalloy steel with added vanadium nitride alloy in steel |
| CN102910596A (en) * | 2012-08-16 | 2013-02-06 | 中色（宁夏）东方集团有限公司 | Preparation method of vanadium nitride |
| CN103014345B (en) * | 2012-11-21 | 2017-05-31 | 湖南省宏元稀有金属材料有限公司 | The production method of VN alloy |
| CN107421324B (en) * | 2017-07-24 | 2019-06-04 | 湖南众鑫新材料科技股份有限公司 | A kind of dou-ble-pusher kiln producing ferrovanadium nitride |
| CN108120287A (en) * | 2018-01-25 | 2018-06-05 | 南京维能窑炉科技有限公司 | A kind of pusher static burning kiln of thin plate |
| CN109136612B (en) * | 2018-09-25 | 2020-01-17 | 山东济钢合金材料科技有限公司 | Preparation method of vanadium-nitrogen alloy |
| CN111017889A (en) * | 2019-11-20 | 2020-04-17 | 中色（宁夏）东方集团有限公司 | Preparation method of niobium nitride |
| CN113336201A (en) * | 2021-06-11 | 2021-09-03 | 江苏锋芒复合材料科技集团有限公司 | Preparation method of vanadium nitride/chromium nitride composite powder and application of vanadium nitride/chromium nitride composite powder in polymeric abrasive |
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- 2004-04-06 CN CN 200410023094 patent/CN1274601C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1562770A (en) | 2005-01-12 |
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Owner name: HUNAN HENGXING IMPORT + EXPORT CO., LTD. Free format text: FORMER OWNER: XIANGTAN CITY HENGXIN SPECIAL ALLOY FACTORY Effective date: 20100604 |
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Free format text: CORRECT: ADDRESS; FROM: 411104 FURONG ROAD, XIANGTAN CITY, HUNAN PROVINCE TO: 411101 GERMANY INDUSTRIAL PARK, XIANGTAN HIGH-TECH ZONE |
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