CN109321811A - Vanadium nitride powder at block method - Google Patents
Vanadium nitride powder at block method Download PDFInfo
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- CN109321811A CN109321811A CN201811371490.0A CN201811371490A CN109321811A CN 109321811 A CN109321811 A CN 109321811A CN 201811371490 A CN201811371490 A CN 201811371490A CN 109321811 A CN109321811 A CN 109321811A
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- vanadium nitride
- nitride powder
- powder
- vanadium
- vananum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C35/00—Master alloys for iron or steel
Abstract
Vanadium nitride powder at block method, comprising the following steps: by vanadium nitride powder and vananum, B2O3Mixing, in a nitrogen atmosphere, 1000 DEG C~1200 DEG C fire 4~6 hours, blocky vanadium nitride can be obtained after discharging.The present invention adds a small amount of B2O3, can reduce the temperature of firing, also, studies have shown that vanadium nitride it is blockiness more preferable.If B2O3Additional amount it is too low, it is blockiness poor, need to fire longer time；If additional amount is excessively high, excessive B element is introduced, influences the performance of final products.Firing temperature of the invention is lower than the production temperature of vanadium nitride, and the reaction time is only 4~6h, required far below vanadium nitride production 15~for 24 hours.The beneficial effects of adopting the technical scheme are that the present invention using after vananum pyroreaction as binder, blocky vanadium nitride can be obtained, simple process, cost is relatively low.
Description
Technical field
The invention belongs to vanadium field of metallurgy, more particularly, to a kind of vanadium nitride powder at block method.
Background technique
Vanadium nitride powder be generated after broken, screening, packaging in process of producing vanadium nitride do not meet product minimum
Grain, the powdery finished product vanadium nitride of granularity requirements.On the one hand vanadium nitride powder producing cause is to contain powder, particle, meeting due to green-ball
Powder is generated after firing；On the other hand it due to unavoidably there is bonding phenomenon between ball and ball in finished product, can be produced after broken
Fecula material.In the present circumstance, the amount that vanadium nitride powder is generated during production vanadium nitride is larger, powder in general vanadium nitride product
For the ratio of material in 3~15wt%, best index is 2wt% or so.As steel-making alloy alloy, if vanadium nitride powder is direct
Applied to steel-making, it will cause a large amount of powders and drain with flue dust, vanadium loss late is very high.It after raw material processing, will only obtain blocky, ball
The vanadium nitride product of shape or other forms, just can guarantee its effective use.
Vanadium nitride has the characteristics that high rigidity, without ductility as a kind of vanadium alloy, between powder can not by pressure at
Type, and powder can not be bonded pressure ball under the premise of guaranteeing product quality by conventional binders, thus cause nitridation vanadium powder without
Method direct pressure is shaped to bulk.Some producers, which use, at present is added to vanadium nitride powder by a certain percentage in nitridation vanadium raw materials
Again the method for mixing pressure ball consumes vanadium nitride powder, can play the purpose of consumption vanadium nitride powder to a certain extent, but
There are many problems for the method: (1) increase cost: pressure ball firing, which is equivalent to, again has carried out secondary firing for finished product, generates two
Secondary energy waste, while reducing the yield that finishing section is added；(2) influence product apparent mass, increase powder amount: powder with
It is fired after raw material pressure ball, since powder is different from the shrinking percentage in raw material formation Finished product processThe in firing, makes product surface
Severe crack is generated, vanadium nitride apparent mass is influenced, more since a large amount of crackle further increases powder amount, causes powder
The vicious circle for the more burning the more more；(3) pressure ball equipment attrition increases: vanadium nitride hardness and wearability are very high, are many tool tables
The preferred material of face wear-resistant coating, after powder pressure ball is added, the increased wear of ball press working roll seriously affects pressure ball and longevity
Life.Therefore not the problem of method of mixing pressure ball not can effectively solve vanadium nitride powder again.
Application No. is the patents of 201110120993 .2 to provide a kind of core-spun yarn and method for molten steel alloying,
Sandwich layer in this method is made of the alloy of alloy of vanadium nitride, calcium-silicon and iron series column, alloy of vanadium nitride therein, silico-calcium
Alloy is all powder, and powder particle size≤5mm, this granularity is more bonded with the granularity of vanadium nitride powder.According to the above method,
Vanadium nitride powder can should be effectively consumed, but there are also shortcomings for this method: (1) need individual equipment, place
Deng, it is required investment it is larger；(2) more stringent to requirements such as the granularmetric composition of vanadium nitride powder, powder mobility in technology, it is required
Processing cost is high.
CN104120330A disclose a kind of vanadium nitride powder at block method, but the high vanadium ferroalloy cost being added in this method
Height, and firing temperature is high.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide that a kind of sintering temperature is lower, cost
Low vanadium nitride powder at block method.
The technical solution used to solve the technical problems of the present invention is that a kind of vanadium nitride powder at block method, including with
Lower step: by vanadium nitride powder and vananum, B2O3Mixing, in a nitrogen atmosphere, 1000 DEG C~1200 DEG C fire it is 4~6 small
When, blocky vanadium nitride can be obtained after discharging.
The mass ratio of vanadium nitride powder and vananum is 15~18:1.Vanadium nitride powder and B2O3Mass ratio be 1000-
1100:1。
The present invention adds a small amount of B2O3, can reduce the temperature of firing, also, studies have shown that vanadium nitride it is blockiness more
It is good.If B2O3Additional amount it is too low, it is blockiness poor, need to fire longer time；If additional amount is excessively high, excessive B member is introduced
Element influences the performance of final products.
Firing temperature of the invention is lower than the production temperature of vanadium nitride, and the reaction time is only 4~6h, is far below vanadium nitride
15 needed for production~for 24 hours.
The beneficial effects of adopting the technical scheme are that the present invention is using after vananum pyroreaction as viscous
Agent is tied, blocky vanadium nitride can be obtained, simple process, cost is relatively low.
Specific embodiment
Below in conjunction with specific embodiment, invention is further described in detail.
Embodiment 1
The vanadium nitride powder of the present embodiment at block method, comprising the following steps: by vanadium nitride powder and vananum (content of vanadium
For 78wt%), B2O3Mixing, in a nitrogen atmosphere, 1000 DEG C fire 6 hours, blocky vanadium nitride can be obtained after discharging.
The mass ratio of vanadium nitride powder and vananum is 18:1.Vanadium nitride powder and B2O3Mass ratio be 1100:1.
Blocky vanadium nitride product main component obtained by the present embodiment: 78 15 3 .72wt% of .33wt%, C of .1wt%, N of V,
Surplus is aluminium and boron (boracic minute quantity).
The surface of vanadium nitride block obtained by the present embodiment is smooth close.
Embodiment 2
The vanadium nitride powder of the present embodiment at block method, comprising the following steps: by vanadium nitride powder and vananum (content of vanadium
For 78wt%), B2O3Mixing, in a nitrogen atmosphere, 1200 DEG C fire 4 hours, blocky vanadium nitride can be obtained after discharging.
The mass ratio of vanadium nitride powder and vananum is 15:1.Vanadium nitride powder and B2O3Mass ratio be 1000:1.
Vanadium nitride product main component: 77 15 3 .82wt% of .01wt%, C of .1wt%, N of V, surplus is that aluminium and boron (contain
Boron minute quantity).
The surface of vanadium nitride block obtained by the present embodiment is smooth close.
Comparative example 1
The vanadium nitride powder of this comparative example at block method, comprising the following steps: by vanadium nitride powder and vananum (content of vanadium
For 78wt%) mixing, in a nitrogen atmosphere, 1000 DEG C fire 6 hours, blocky vanadium nitride can be obtained after discharging.
The mass ratio of vanadium nitride powder and vananum is 18:1.
Blocky vanadium nitride product main component obtained by this comparative example: 78 15 3 .92wt% of .53wt%, C of .8wt%, N of V,
Surplus is aluminium.
The rough surface of vanadium nitride block obtained by this comparative example, not closely.
Comparative example 2
The vanadium nitride powder of this comparative example at block method, comprising the following steps:
By vanadium nitride powder and B2O3Mixing, in a nitrogen atmosphere, 1000 DEG C fire 6 hours, after discharging, what is obtained is powdery nitrogen
Change vanadium, is unable to get blocky vanadium nitride.
Vanadium nitride powder and B2O3Mass ratio be 1100:1.
Powdery vanadium nitride product main component obtained by this comparative example: 79 15 3 .72wt% of .33wt%, C of .1wt%, N of V,
Surplus is boron.
Claims (3)
1. vanadium nitride powder at block method, which comprises the following steps: by vanadium nitride powder and vananum, B2O3
Mixing, in a nitrogen atmosphere, 1000 DEG C~1200 DEG C fire 4~6 hours, blocky vanadium nitride can be obtained after discharging.
2. vanadium nitride powder according to claim 1 at block method, which is characterized in that vanadium nitride powder and vananum
Mass ratio be 15~18:1.
3. vanadium nitride powder according to claim 1 or 2 at block method, which is characterized in that vanadium nitride powder and B2O3's
Mass ratio is 1000-1100:1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811371490.0A CN109321811B (en) | 2018-11-18 | 2018-11-18 | Vanadium nitride powder at block method |
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| CN201811371490.0A CN109321811B (en) | 2018-11-18 | 2018-11-18 | Vanadium nitride powder at block method |
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| CN109321811A true CN109321811A (en) | 2019-02-12 |
| CN109321811B CN109321811B (en) | 2019-09-20 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101717076A (en) * | 2009-11-27 | 2010-06-02 | 华南师范大学 | Method for preparing vanadium nitride |
| CN102070130A (en) * | 2010-11-18 | 2011-05-25 | 庄晓曦 | Preparation method of vanadium nitride |
| 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 |
| CN103233116A (en) * | 2013-05-06 | 2013-08-07 | 南通汉瑞实业有限公司 | Forming process of vanadium-nitrogen alloy |
| CN104120330A (en) * | 2014-07-24 | 2014-10-29 | 河北钢铁股份有限公司承德分公司 | Blocking method for vanadium nitride powder |
| TWI543935B (en) * | 2014-12-22 | 2016-08-01 | 國立成功大學 | Method for manufacturing bn |
| CN106591687A (en) * | 2016-11-17 | 2017-04-26 | 河钢股份有限公司承德分公司 | Method for producing ferrovanadium nitride by use of vanadium nitride powder |
-
2018
- 2018-11-18 CN CN201811371490.0A patent/CN109321811B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101717076A (en) * | 2009-11-27 | 2010-06-02 | 华南师范大学 | Method for preparing vanadium nitride |
| CN102070130A (en) * | 2010-11-18 | 2011-05-25 | 庄晓曦 | Preparation method of vanadium nitride |
| 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 |
| CN103233116A (en) * | 2013-05-06 | 2013-08-07 | 南通汉瑞实业有限公司 | Forming process of vanadium-nitrogen alloy |
| CN104120330A (en) * | 2014-07-24 | 2014-10-29 | 河北钢铁股份有限公司承德分公司 | Blocking method for vanadium nitride powder |
| TWI543935B (en) * | 2014-12-22 | 2016-08-01 | 國立成功大學 | Method for manufacturing bn |
| CN106591687A (en) * | 2016-11-17 | 2017-04-26 | 河钢股份有限公司承德分公司 | Method for producing ferrovanadium nitride by use of vanadium nitride powder |
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| CN109321811B (en) | 2019-09-20 |
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