CN103160698B - Vanadium nitride alloy production technology - Google Patents
Vanadium nitride alloy production technology Download PDFInfo
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- CN103160698B CN103160698B CN201310081266.9A CN201310081266A CN103160698B CN 103160698 B CN103160698 B CN 103160698B CN 201310081266 A CN201310081266 A CN 201310081266A CN 103160698 B CN103160698 B CN 103160698B
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Abstract
The invention discloses a vanadium nitride alloy production technology which comprises the following steps: (1) crushing vanadium iron and combustion improver into 100-200 meshes, and mixing according to a ratio of 20:1; (2) placing the raw materials mixed in the step (1) in a reaction kettle, vacuumizing to -0.1 mPa, then filling nitrogen gas to 0.3 mPa, and closing the reaction kettle; (3) igniting the materials through an electronic ignition device to perform self-propagating reaction with the nitrogen gas, monitoring the pressure in the kettle through a pressure valve in the reaction process, and keeping the pressure in the kettle at 0.2-0.3 mPa; and (4) ensuring that the time from the start of the reaction to discharge is about 2-3 hours, gradually decreasing the pressure in the kettle to normal pressure after the pressure in the kettle does not change any more, then cooling to 200 DEG C, and discharging from the reaction kettle. Further, the combustion improver in the step (1) is Mg powder. According to the invention, the vanadium nitride alloy production technology is energy-saving and environment-friendly, and greatly lowers the consumption of electric energy; the waste gas is the excessive nitrogen gas in the reaction kettle, dose not pollute the environment and can be directly exhausted; and the production process is easy to control and high in production efficiency.
Description
Technical field
The present invention relates to metallurgical technology field, particularly relate to a kind of alloy of vanadium nitride production technique.
Background technology
Vanadium nitride, another name is VN alloy is a kind of novel alloy additive, can substitute the production of vanadium iron for microalloyed steel.Vanadium nitride makes an addition to the comprehensive mechanical performances such as intensity, toughness, ductility and the thermal fatigue resistance that can improve steel in steel, and makes steel have good weldability.Reaching under same intensity, adding vanadium nitride and save vanadium add-on 30-40%, and then reduce cost.VN alloy can be used for structure iron, tool steel, pipe line steel, in reinforcing bar and cast iron.VN alloy is applied in high-strength low-alloy steel can carry out effective vanadium, nitrogen microalloying simultaneously, promotes the precipitation of carbon, vanadium, nitrogen compound in steel, more effective performance sedimentation strengthening and Grain refinement.Existing production technology is: take Vanadium Pentoxide in FLAKES as main raw material, by the method for pushed bat kiln or heating in medium frequency, raw material and nitrogen is reacted, produces vanadium nitride product.The electric power that this processes expend is a large amount of, and in reaction process, produce a large amount of waste gas.Application number: the invention of 201010548528.4 provides a kind of preparation method of vanadium nitride, mixed with organic nitrogen compound by vanadium oxide and obtain vanadium nitrogen inner complex through solvent heat treatment, crystallization, filtration, then calcine in shielding gas, obtains vanadium nitride.In above technical scheme, need through solvent heat treatment, solvent waste liquor contamination environment, calcining needs additionally to consume electric energy, and unnecessary anaerobic organic nitrogen compound also needs to reclaim, and adds processing step, consumes the energy further, be unfavorable for energy-conserving and environment-protective.Self-propagating technology: be a kind of technology utilizing chemical reaction self-heat generation synthetic materials, the conbustion synthesis that is otherwise known as (Combustion Synthesis).Its fundamental is 1, utilizes chemical heat release, and (or part) does not need external heat source completely; 2, the automatic holding reaction burnt by fast automatic ripple obtains the product of required composition and structure; 3, release and transmission speed by changing heat come composition and the structure of the speed of control process, temperature, transformation efficiency and product.Self-propagating technology is not also had to be applied to the technology of vanadium nitride production at present.
Summary of the invention
The invention provides and a kind ofly can reduce the alloy of vanadium nitride production technique that current consumption does not produce waste gas.
Realizing the technical scheme that above-mentioned purpose takes is: a kind of alloy of vanadium nitride production technique, and the steps include: that vanadium iron and ignition dope are pulverized by (1) is 100 ~ 200 orders, mixes in the ratio of 20:1;
(2) raw material step (1) mixed loads in reactor, is evacuated to-0.1 MPa, is then filled with the pressure of nitrogen to 0.3 MPa, closed reactor;
(3) material is lighted by electronic ignition device and nitrogen carries out self-propagating reaction, reaction process is by pressure valve monitoring still internal pressure, pressure passes into nitrogen lower than during 0.2 MPa, and pressure opens pressure loading valve higher than during 0.3 MPa, keeps still internal pressure between 0.2 ~ 0.3 MPa;
(4) reaction starts to coming out of the stove 2 ~ 3 hours, after question response still internal pressure no longer changes, reduces still internal pressure gradually to normal pressure, is then cooled to 200 DEG C, goes out reactor.
Further, in step (1), ignition dope is Mg powder.
The invention has the beneficial effects as follows: vanadium iron and ignition dope light rear and nitrogen generation chemical reaction by electronic ignition device, chemical reaction produces a large amount of heat and maintains vanadium iron and nitrogen sustained reaction further, the speed of response of vanadium iron and nitrogen is controlled by the pressure of the nitrogen of control inputs reactor, energy-conserving and environment-protective of the present invention, greatly reduce the consumption of electric energy, waste gas is that nitrogen excessive in reactor is free from environmental pollution can be directly emptying, and production process is easy to control, and production efficiency is high.
Embodiment
Embodiment 1:
A kind of alloy of vanadium nitride production technique, the steps include:
(1) vanadium iron and ignition dope being pulverized is 100 orders, mixes in the ratio of 20:1;
(2) raw material step (1) mixed loads in reactor, is evacuated to-0.1 MPa, is then filled with the pressure of nitrogen to 0.3 MPa, closed reactor;
(3) material is lighted by electronic ignition device and nitrogen carries out self-propagating reaction, reaction process is by pressure valve monitoring still internal pressure, pressure passes into nitrogen lower than during 0.2 MPa, and pressure opens pressure loading valve higher than during 0.3 MPa, keeps still internal pressure between 0.2 ~ 0.3 MPa;
(4) reaction starts to coming out of the stove about 3 hours, after question response still internal pressure no longer changes, reduces still internal pressure gradually to normal pressure, is then cooled to 200 DEG C, goes out reactor.
Further, in step (1), ignition dope is Mg powder.
The vanadium nitride product physical and chemical standards produced is:
| V | N | C | Si | S | P | Conforming product rate |
| 43-57 | 10-14 | ＜0.6 | ＜2.5 | ＜0.05 | ＜0.1 | 99.20% |
The invention has the beneficial effects as follows: vanadium iron and ignition dope light rear and nitrogen generation chemical reaction by electronic ignition device, chemical reaction produces a large amount of heat and maintains vanadium iron and nitrogen sustained reaction further, the speed of response of vanadium iron and nitrogen is controlled by the pressure of the nitrogen of control inputs reactor, energy-conserving and environment-protective of the present invention, greatly reduce the consumption of electric energy, waste gas is that nitrogen excessive in reactor is free from environmental pollution can be directly emptying, and production process is easy to control, and production efficiency is high.
Embodiment 2:
A kind of alloy of vanadium nitride production technique, the steps include:
(1) vanadium iron and ignition dope being pulverized is 150 orders, mixes in the ratio of 20:1;
(2) raw material step (1) mixed loads in reactor, is evacuated to-0.1 MPa, is then filled with the pressure of nitrogen to 0.3 MPa, closed reactor;
(3) material is lighted by electronic ignition device and nitrogen carries out self-propagating reaction, reaction process is by pressure valve monitoring still internal pressure, pressure passes into nitrogen lower than during 0.2 MPa, and pressure opens pressure loading valve higher than during 0.3 MPa, keeps still internal pressure between 0.2 ~ 0.3 MPa;
(4) reaction starts to coming out of the stove about 2.5 hours, after question response still internal pressure no longer changes, reduces still internal pressure gradually to normal pressure, is then cooled to 200 DEG C, goes out reactor.
Further, in step (1), ignition dope is Mg powder.
The vanadium nitride product physical and chemical standards produced is:
| V | N | C | Si | S | P | Conforming product rate |
| 43-57 | 10-14 | ＜0.6 | ＜2.5 | ＜0.05 | ＜0.1 | 99.50% |
The invention has the beneficial effects as follows: vanadium iron and ignition dope light rear and nitrogen generation chemical reaction by electronic ignition device, chemical reaction produces a large amount of heat and maintains vanadium iron and nitrogen sustained reaction further, the speed of response of vanadium iron and nitrogen is controlled by the pressure of the nitrogen of control inputs reactor, energy-conserving and environment-protective of the present invention, greatly reduce the consumption of electric energy, waste gas is that nitrogen excessive in reactor is free from environmental pollution can be directly emptying, and production process is easy to control, and production efficiency is high.
Embodiment 3:
A kind of alloy of vanadium nitride production technique, the steps include:
(1) vanadium iron and ignition dope being pulverized is 200 orders, mixes in the ratio of 20:1;
(2) raw material step (1) mixed loads in reactor, is evacuated to-0.1 MPa, is then filled with the pressure of nitrogen to 0.3 MPa, closed reactor;
(3) material is lighted by electronic ignition device and nitrogen carries out self-propagating reaction, reaction process is by pressure valve monitoring still internal pressure, pressure passes into nitrogen lower than during 0.2 MPa, and pressure opens pressure loading valve higher than during 0.3 MPa, keeps still internal pressure between 0.2 ~ 0.3 MPa;
(4) reaction starts to coming out of the stove about 2 hours, after question response still internal pressure no longer changes, reduces still internal pressure gradually to normal pressure, is then cooled to 200 DEG C, goes out reactor.
Further, in step (1), ignition dope is Mg powder.
The vanadium nitride product physical and chemical standards produced is:
| V | N | C | Si | S | P | Conforming product rate |
| 43-57 | 10-14 | ＜0.6 | ＜2.5 | ＜0.05 | ＜0.1 | 99.70% |
The invention has the beneficial effects as follows: vanadium iron and ignition dope light rear and nitrogen generation chemical reaction by electronic ignition device, chemical reaction produces a large amount of heat and maintains vanadium iron and nitrogen sustained reaction further, the speed of response of vanadium iron and nitrogen is controlled by the pressure of the nitrogen of control inputs reactor, energy-conserving and environment-protective of the present invention, greatly reduce the consumption of electric energy, waste gas is that nitrogen excessive in reactor is free from environmental pollution can be directly emptying, and production process is easy to control, and production efficiency is high.
Claims (2)
1. an alloy of vanadium nitride production technique, is characterized in that: the steps include:
(1) vanadium iron and ignition dope being pulverized is 100 ~ 200 orders, mixes in the ratio of 20:1;
(2) raw material step (1) mixed loads in reactor, is evacuated to-0.1 MPa, is then filled with the pressure of nitrogen to 0.3 MPa, closed reactor;
(3) material is lighted by electronic ignition device and nitrogen carries out self-propagating reaction, reaction process is by pressure valve monitoring still internal pressure, pressure passes into nitrogen lower than during 0.2 MPa, and pressure opens pressure loading valve higher than during 0.3 MPa, keeps still internal pressure between 0.2 ~ 0.3 MPa;
(4) reaction starts to coming out of the stove 2 ~ 3 hours, after question response still internal pressure no longer changes, reduces still internal pressure gradually to normal pressure, is then cooled to 200 DEG C, goes out reactor.
2. a kind of alloy of vanadium nitride production technique as claimed in claim 1, is characterized in that: in step (1), ignition dope is Mg powder.
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| CN103526098B (en) * | 2013-10-12 | 2015-07-15 | 攀枝花市仁通钒业有限公司 | Nitrided silicon-vanadium-iron alloy and production method thereof |
| CN105063398B (en) * | 2015-09-06 | 2017-05-31 | 湖南众鑫新材料科技股份有限公司 | A kind of technique for preparing nitrogen VN alloy high |
| CN105087994B (en) * | 2015-09-06 | 2017-05-31 | 湖南众鑫新材料科技股份有限公司 | A kind of method for preparing the high-purity VN alloy of nitrogen high |
| CN111206172B (en) * | 2020-03-09 | 2021-09-14 | 承德锦科科技股份有限公司 | Nitrided ferrocolumbium alloy and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101824556A (en) * | 2009-03-05 | 2010-09-08 | 承德金科科技开发有限责任公司 | Method for producing ferrovanadium nitride by adopting self-propagating high temperature synthesis process |
| CN102477511A (en) * | 2010-11-30 | 2012-05-30 | 攀钢集团钢铁钒钛股份有限公司 | Method for preparing nitrided ferrovanadium |
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| JP2010111941A (en) * | 2008-10-07 | 2010-05-20 | Kobe Steel Ltd | Method for producing ferrovanadium |
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| CN101824556A (en) * | 2009-03-05 | 2010-09-08 | 承德金科科技开发有限责任公司 | Method for producing ferrovanadium nitride by adopting self-propagating high temperature synthesis process |
| CN102477511A (en) * | 2010-11-30 | 2012-05-30 | 攀钢集团钢铁钒钛股份有限公司 | Method for preparing nitrided ferrovanadium |
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