CN105838959A - Vanadium nitrogen microalloy additive and preparing method thereof - Google Patents
Vanadium nitrogen microalloy additive and preparing method thereof Download PDFInfo
- Publication number
- CN105838959A CN105838959A CN201610373729.2A CN201610373729A CN105838959A CN 105838959 A CN105838959 A CN 105838959A CN 201610373729 A CN201610373729 A CN 201610373729A CN 105838959 A CN105838959 A CN 105838959A
- Authority
- CN
- China
- Prior art keywords
- vanadium
- kiln
- nitrogen
- dou
- ble
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/16—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on nitrides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/06—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron
- C01B21/0615—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron with transition metals other than titanium, zirconium or hafnium
- C01B21/0617—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron with transition metals other than titanium, zirconium or hafnium with vanadium, niobium or tantalum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
Abstract
The invention relates to a vanadium nitrogen microalloy additive and a preparing method thereof. The vanadium nitrogen microalloy additive comprises, by mass, 100 parts of a vanadium compound, 20-28 parts of a synthetic graphite reducing agent and 1-5 parts of an active agent. The preparing method includes the steps that the vanadium compound is pulverized with a pulverizer; the synthetic graphite reducing agent is mixed with the pulverized vanadium compound, the active agent and water are then added, and even mixing is carried out; and a mixture is pressed and molded, a natural ordinary state water evaporation process is past, drying, reduction, carbonization, nitriding, firing and cooling integrated continuous sintering process is carried out in a full-automatic 55-meter nitrogen atmosphere protection dual-pushed-slab kiln, and therefore the vanadium nitrogen microalloy additive is prepared. According to the vanadium nitrogen microalloy additive and the preparing method, a synthetic graphite raw material is adopted as the ingredient matching reducing agent, the reducing speed is increased, and the quality of the product is improved. The vanadium nitrogen microalloy additive and the preparing method have the beneficial effects that the process equipment is simple, the labor production efficiency is greatly improved, and the production cost is greatly reduced.
Description
Technical field
The present invention relates to a kind of production vanadium nitrogen microalloy additions and preparation method thereof.
Technical background
VN alloy is used primarily in metallurgy industry as the additive of alloy, industrial development in recent years rapid, greatly
The industrial scale applications data of amount show: bring interests for STEELMAKING PRODUCTION in vanadium addition steel and (reduce and reheat temperature, minimizing horizontal stroke
To crackle, reduce rolling load, rolling condition affects reduction etc. to the characteristic of steel), improve steel performance (intensity, toughness,
Ductility, mouldability, weldability and antifriction performance, etc.), thus reduce cost.The reduction of this cost refers not only to steel
The reduction of production cost, and be the reduction of the manufacturing cost using these V-alloyed steel to bring, e.g., build building, bridge, wheel
Ship, automobile, railway etc..In steel, add vanadium, the performance of steel can be significantly improved.Practice have shown that, structural steel adds 0.1%
Vanadium, can improve intensity 10～20%, alleviates construction weight 15～25%, reduces cost 8～10%.According to during containing vanadium high strength steel,
Metal structure weight 40～50% can be alleviated, than the low cost 15～30% of general structural steel.
Research shows: vanadium adds in steel, in addition to solution strengthening effect is not notable, significantly improves the property of steel in following several respects
Energy.
1. V (CN) is high at austenite emphasis solubility product, and vanadium all has stronger precipitation strength in basic, normal, high carbon steel
Effect.
2. the growing up of austenite crystal time during vanadium joins steel by stoping heating, suppress deformed austeaite recrystallization, by force
Change the approach such as γ → α phase-transition crystal grain thinning effect, reach to refine the effect of the crystal grain of steel.
3. Cooling Austenite Transformation is had and significantly affects by vanadium, and research shows, different from most of alloying elements, vanadium does not prolongs
Late ferritic transformation and postpone bainite and perlitic transformation.Meanwhile, vanadium improves the effect of the quenching degree of steel, is same content
Molybdenum two times that quenching degree is contributed.
Vanadium, in welding high-strength steel, promotes ferritic formation in heat affected area, thus improves the toughness of weldment.In,
High-carbon steel uses vanadium micro-alloying, will substantially postpone perlitic transformation, and can obtain thinner under the conditions of same rate of cooling
Pearlite, i.e. improves the degree of sorbitizing, as in rigid line product, vanadium micro-alloying not only increase product intensity and
Toughness, and the most partly or entirely cancel lead bath and process.In rail product, for improving its service life, develop and owed
Speed quenching technical, i.e. SQ(Slack Quenching) technique.Test shows, in the case of hardness is identical, pearlite is than tempering
Martensite and bainite are more resistant to mill, and the sheet interlayer spacing of pearlite is the least, and its anti-wear performance is the best.Rail add appropriate
Vanadium, its transition curve moves to right so that it is implement SQ technique time, it is easier to realize tissue sorbitizing.
The main points of the physical metallurgy principle of v n micro alloying: 1. in steel after nitrogen pick-up, were originally in and admittedly melt the vanadium of state and turn
Become the vanadium of precipitation state, give full play to the precipitation strength effect of vanadium；2. nitrogen has the work of obvious crystal grain thinning in steel
With；3. v n micro alloying is by optimizing precipitation and the fining ferrite grains of vanadium, has given full play to grain refining strengthening and has sunk
Form sediment and strengthen the effect of two kinds of schedule of reinforcements, substantially improve the combination of strength and toughness of steel, fully demonstrated microalloying at technology warp
Advantage in terms of Ji；4. v n micro alloying is used, it is not necessary to add other valuable alloying elements, under hot-rolled condition
Obtain the high strength steel that yield strength is 550～600MPa.Therefore, VN alloy is used widely in steel.
In micro alloyed steel produces, VN saves the addition of vanadium because having, and reduces cost, and vanadium, nitrogen recovery rate are stable,
Reduce the performance inconsistency of steel, than vanadium iron, there is more effective precipitation strength and Grain Refinement Effect and the vanadium etc. of saving 20%～40%
Feature, pretends as a kind of most economical effective additive of Aldecor, has positive using value.
Along with deepening continuously VN alloy (VN) research work both at home and abroad, people are fully recognized that having of VN alloy
Benefit effect.Find according to the research of materialogy in modern age, when in some steel containing a certain amount of alloying element and a certain amount of nitrogen, warp
The performance of steel can be made after heat treatment to increase substantially.Such as, nitrogen can stable austenite rustless steel, improve its decay resistance；?
Containing V or containing in V+N steel, if containing a certain amount of N, after heat treatment generating nitrides precipitate, hardening of steel can be promoted, Gao Gang's
Intensity.In steel, increasing method for nitrogen generally has: 1. adds rich nitrogen ferromanganese, 2. add nitrolim, 3. nitrogen flushing, 4. use ferrovanadium nitride,
But these methods have weak point: 1. expensive；2. yield is low and unstable；3. special device is needed during nitrogen flushing.4. Mr. is wanted
Producing vanadium iron, then solid State Nitriding obtains ferrovanadium nitride, manufacturing cost is high.Both at home and abroad list of references uses You① American Association company
Vacuum carbon reduction method takes the technology of vanadium nitride by strategy, 2. has the empty bed of flowing or return bend (material can be back to back), 3. Flos Bombacis Malabarici steel
Inland Steel has applied for " vanadium nitride list pushed bat kiln production method " patent, and 4. Changsha Longtai Science Co., Ltd provides a kind of recruitment
Industry microwave oven produces the method for vanadium nitride, 5. the YongCheol Hong of Korea S under atmospheric pressure with N2/Ar/H2 microwave etc. from
Sub-flame decomposes the VOCl5 of gaseous state, has obtained the nanoscale vanadium nitride particles containing a small amount of V2O5,6. the C. L. of TaiWan, China
Yeh ignites after the vanadium powder of mix homogeneously and carbon dust compression under nitrogen atmosphere, is obtained by high temperature self-reproduction mode (SHS)
The carbonitride of vanadium, 7. the Sansan Yu of Northeast China university the carbon thermal reduction of V2O3 and two process conformities of nitridation is
One process, has i.e. produced crystal grain and cube vanadium nitride of shape the most very expansion by one-step method.
It is harsh that tradition prepares vanadium nitride process not only consersion unit, and the elevated temperature strength of equipment and materials requires height, needs high temperature
Environment, and reaction time is long, causes labor productivity low；Long reaction time causes energy consumption excessive；High temperature for a long time
Process is big to equipment loss；Equipment disposably puts into greatly, and volume of production is little, and input is disproportionate with output causes production cost high,
Product competitiveness declines.
Summary of the invention
Its purpose of the present invention is that a kind of vanadium nitrogen microalloy additions of offer and preparation method thereof, is utilizing vfanadium compound
Use carbonization with Delanium reducing agent and nitrogenize the mode simultaneously carried out, with the effective preparation solving microalloy additions
Severe reaction conditions, the problem of length reaction time in journey, the present invention uses Delanium raw material in terms of dispensing proportioning reducing agent,
Improve reduction rate, product yield is improved；Have that process equipment is simple, work is greatly improved produces effect
The feature that rate, production cost are substantially reduced.
The technical scheme realizing above-mentioned purpose and take,
A kind of vanadium nitrogen microalloy additions, including the people that the vfanadium compound that mass fraction is 100 parts, mass fraction are 20～28 parts
Make graphite reduction agent, mass fraction is the activating agent of 1～5 part；Described vfanadium compound be vanadic anhydride, Vanadium sesquioxide or
Ammonium metavanadate；Described Delanium reducing agent is 399 graphous graphite powders；Described activating agent is Fe2O3, alumina powder or
K2Cr2O7。
The preparation method of a kind of vanadium nitrogen microalloy additions, comprises the steps:
1) vfanadium compound that mass fraction is 100 parts is ground to 200 250 mesh through flour mill；
2) the Delanium reducing agent that mass fraction is 20～28 parts is mixed with the vfanadium compound after grinding, add mass parts
Number is the activating agent of 1～5 part and water that mass fraction is 12 parts, is sufficiently mixed uniformly through spiral rotary drum type batch mixer；
3) by the mixture after mix homogeneously under the conditions of pressure is 3000pa～5000pa compressing, the reproduced goods of molding lead to
It's 3 days the pasting natural normality is dried, and is dried through full-automatic 55 meters of nitrogen atmosphere protection dou-ble-pusher kiln, reduces, carbonization, nitrogenizes, burns
Knot, cooling integrated continuous sintering technique prepare vanadium nitrogen microalloy additions.
Beneficial effect
Compared with prior art the present invention has the following advantages.
1, in terms of dispensing proportioning reducing agent, Delanium raw material is used, it may be assumed that Delanium reducing agent is for for 399 artificial stones
Powdered ink, its reduction rate than natural flake graphite and crystalline graphite powder reduction rate fast 20%, beneficially one secondary reduction time,
Product yield improves 15%；
2, full-automatic 55 meters of nitrogen atmosphere protection dou-ble-pusher kiln are used, without vacuum drying oven, the technique can successively run under normal pressure.
Reduction under this normal pressure, carbonization, nitridation, sintering process avoid vacuum process and coreless induction furnace (shaft kiln) process, also avoid it
The complication of his process equipment, vacuum reduction method shortened from tens hours several hours, work was greatly improved raw
Produce efficiency, be truly realized technology and produce.On the energy from before 12000 degree of electricity/ton VN be reduced to present 3500 degree
Electricity/ton VN, makes production cost be greatly lowered because of the reduction of energy consumption.Also environment is protected, really while saving the energy
Achieve cleaning production enterprise.In terms of lectotype selection and equipment research, use the double push pedal of full-automatic 55 meters of nitrogen atmosphere protections
The kiln daily output can reach 3.5 tons to 4 tons, and the full-automatic 55 meters of nitrogen atmosphere protection dou-ble-pusher kiln yearly productive capacities of separate unit can reach 1000
Ton is to 1100 tons, so that production cost is substantially reduced, product has more the market competitiveness.
Detailed description of the invention
A kind of vanadium nitrogen microalloy additions, is 20～28 parts including the vfanadium compound that mass fraction is 100 parts, mass fraction
Delanium reducing agent, mass fraction be the activating agent of 1～5 part；Described vfanadium compound is vanadic anhydride, three oxidations two
Vanadium or ammonium metavanadate；Described Delanium reducing agent is 399 graphous graphite powders；Described activating agent is Fe2O3, alumina powder or
K2Cr2O7。
The preparation method of a kind of vanadium nitrogen microalloy additions, comprises the steps:
1) vfanadium compound that mass fraction is 100 parts is ground to 200 250 mesh through flour mill；
2) the Delanium reducing agent that mass fraction is 20～28 parts is mixed with the vfanadium compound after grinding, add mass parts
Number is the activating agent of 1～5 part and water that mass fraction is 12 parts, is sufficiently mixed uniformly through spiral rotary drum type batch mixer；
3) by the mixture after mix homogeneously under the conditions of pressure is 3000pa～5000pa compressing, the reproduced goods of molding lead to
It's 3 days the pasting natural normality is dried, and is dried through full-automatic 55 meters of nitrogen atmosphere protection dou-ble-pusher kiln, reduces, carbonization, nitrogenizes, burns
Knot, cooling integrated continuous sintering technique prepare vanadium nitrogen microalloy additions.
Described full-automatic 55 meters of nitrogen atmosphere protection dou-ble-pusher kiln nitrogen flows control at 1920m/t.
In described full-automatic 55 meters of nitrogen atmosphere protection dou-ble-pusher kiln, the baking temperature in negative kiln is by the heat exchanger of main kiln rear
Thering is provided heat, negative kiln baking temperature is 150 degree, and negative kiln drying time is 5.5 hours, dries to vanadium nitrogen microalloy additions pellet
Moisture content 0.5%.
In described full-automatic 55 meters of nitrogen atmosphere protection dou-ble-pusher kiln, the pellet after negative kiln drying enters full-automatic 55 meters of nitrogen
In atmosphere protection dou-ble-pusher kiln, reduction is divided into once reduction and secondary reduction, and a described reduction temperature is 500 DEG C～750 DEG C, also
Former 4.5 hours, by V2O5It is reduced to the V of indissoluble2O4。
Carbonization in described full-automatic 55 meters of nitrogen atmosphere protection dou-ble-pusher kiln, nitridation complete secondary reduction, carbonization, nitridation simultaneously
Temperature is 750 DEG C～1250 DEG C, reduces 7 hours；Nitridation sintered temperature is 1250 DEG C～1600 DEG C, sinters 12 hours.
Described full-automatic 55 meters of nitrogen atmosphere protection dou-ble-pusher kiln chilling temperatures are 950 DEG C～100 DEG C, and outlet temperature is at 80 DEG C
Below.
Embodiment 1
Vanadium nitrogen microalloy additions is prepared for raw material with vanadic anhydride:
Lamellar or powdery vanadic anhydride are milled to 200 250 mesh through flour mill, weigh five oxidations two that mass fraction is 100g
Vanadium, with addition of 26 Delanium reducing agents, this enforcement select Delanium reducing agent for for 399 graphous graphite powders, its amount of allocating into
Lower reaction equation is foundation, by chemical reaction metering preparation, and suitably adjusts mixed carbon comtent.
V2O5+6C+1/2N2=VC+VN+5CO
Add 2.8g activating agent K2Cr2O7(potassium dichromate), it is sufficiently mixed uniformly through spiral rotary drum type batch mixer, is entering wet mixing
Machine carries out adding the water of 12g and carries out wet mixing, compressing after mix homogeneously, and molding pressing pressure is 3000pa, making after molding
The anistree prismatic body of product a size of 40 × 40 × 35mm, being dried by the natural normality of 3 days at goods of molding, strong to improve it
Degree and response speed and the effect of reduction reduction process mass expanded.One is carried out through full-automatic 55 meters of nitrogen atmosphere protection dou-ble-pusher kiln
Body continuous sintering technique prepares vanadium nitrogen microalloy additions------VN alloy.
Wherein, dou-ble-pusher kiln nitrogen flow 1920m/t；Dou-ble-pusher kiln is divided into main kiln and negative kiln, baking temperature in negative kiln,
By main kiln rear heat exchanger gained heat, the temperature changed is 150 degree, and negative kiln drying time is 5.5 hours, dries aqueous to pellet
Divide 0.5%.Complete in main kiln reduction, carbonization, nitrogenize, sinter, cooling integrated continuous sintering technique；In dou-ble-pusher kiln, reduction is divided into
Once reduction and secondary reduction, a reduction temperature is 750 DEG C and reduces 4.5 hours, carries out reduction V2O5V to indissoluble2O4；Kiln
Interior carbonization nitridation completes secondary reduction simultaneously, and secondary reduction carbonization nitrogenized when 1250 DEG C of carbonizations nitrogenize 7；Nitridation sintered in 1600
DEG C sintering 12 hours；Chilling temperature is less than 100 DEG C, outlet temperature less than 80 DEG C, cools down 4 hours.
Embodiment 2
Vanadium nitrogen microalloy additions is prepared for raw material with Vanadium sesquioxide
Through flour mill, powdery Vanadium sesquioxide is milled to 200 250 mesh, and weighing the Vanadium sesquioxide that mass ratio is 100g is base
Number, with addition of 20g Delanium reducing agent, this enforcements selection Delanium reducing agent for for 399 graphous graphite powders, its amount of allocating into
Lower reaction equation is foundation, by chemical reaction metering preparation, and suitably adjusts mixed carbon comtent.
V2O3+4C+1/2N2=VC+VN+3CO
Add 4g activating agent Fe2O3 powder, be sufficiently mixed uniformly through spiral rotary drum type batch mixer, carry out adding 12g entering wet mixing machine
Water carry out wet mixing, compressing after mix homogeneously, molding pressing pressure is 4000pa, after molding product size be 40 ×
The anistree prismatic body of 40 × 35mm, being dried by the natural normality of 3 days at goods of molding, to improve its intensity and response speed
And reduce the effect of reduction process mass expanded.Be dried through full-automatic 55 meters of nitrogen atmosphere protection dou-ble-pusher kiln, carbonization, nitrogen
Change, sintering, cooling integrated continuous sintering technique prepare vanadium nitrogen microalloy additions------VN alloy.
Wherein, dou-ble-pusher kiln nitrogen flow 1500m/t；Baking temperature in negative kiln, by main kiln rear heat exchanger gained warm
Amount, the temperature changed is 150 degree, and negative kiln drying time is 5.5 hours, dries to pellet moisture content 0.5%；One time reduction temperature is
650 DEG C, reduce 5 hours；Secondary reduction carbonization nitrogenizes and nitrogenizes 4.5 hours in 1170 DEG C of carbonizations；Nitridation sintered in 1450 DEG C of sintering 7
Hour；Chilling temperature is less than 500 DEG C, outlet temperature less than 80 DEG C, cools down 5.5 hours.
Embodiment 3
With ammonium metavanadate (NH4VO3) it is that vanadium nitrogen microalloy additions prepared by raw material:
Through flour mill, powdery ammonium metavanadate is milled to 200 mesh, and weighing mass fraction is that 100g is the pulverized pieces ammonium vanadate of radix, joins
Add 28g Delanium reducing agent, this enforcement select Delanium reducing agent for for 399 graphous graphite powders, below its amount of allocating into instead
Answering equation is foundation, by chemical reaction metering preparation, and suitably adjusts mixed carbon comtent.
2NH4VO3+6C+1/2N2=VC+VN+2NH3+5CO↑+H2O↑
Add 3.2g activating agent alumina powder, be sufficiently mixed uniformly through spiral rotary drum type batch mixer, add entering wet mixing machine
The water of 12g carries out wet mixing, compressing after mix homogeneously, and molding pressing pressure is 3000pa, after molding in product size is
The anistree prismatic body of 40 × 40 × 35mm, being dried by the natural normality of 3 days at goods of molding, to improve its intensity and reaction
Speed and the effect of reduction reduction process mass expanded.Carry out one through full-automatic 55 meters of nitrogen atmosphere protection dou-ble-pusher kiln to burn continuously
Knot technique prepares vanadium nitrogen microalloy additions------VN alloy.
Wherein, dou-ble-pusher kiln nitrogen flow 2327m/t；Baking temperature in negative kiln, by main kiln rear heat exchanger gained warm
Amount, the temperature changed is 150 degree, and negative kiln drying time is 5.5 hours, dries to pellet moisture content 0.5%, and one time reduction temperature is
450 DEG C are reduced 4.7 hours, carry out reduction V2O5V to indissoluble2O4；Secondary reduction carbonization nitrogenizes that to nitrogenize 6 in 650 DEG C of carbonizations little
Time；Nitridation sintered in 1280 DEG C of sintering 10
Hour；Chilling temperature is less than 350 DEG C, outlet temperature less than 130 DEG C, cools down 5.2 hours.
Under above-mentioned process conditions, the vanadium nitrogen microalloy additions of preparation is consisting of vanadium content 77%～81%, nitrogen content
14%～18%, carbon content 3%～8%, sulfur content 0.01%, phosphorus content 0.01%, oxygen content 1.0%.
Claims (7)
1. a vanadium nitrogen microalloy additions, it is characterised in that include the vanadium that mass fraction is 100 parts
The activating agent that Delanium reducing agent that compound, mass fraction are 20～28 parts, mass fraction are 1～5 part；Described vanadium
Compound is vanadic anhydride, Vanadium sesquioxide or ammonium metavanadate；Described Delanium reducing agent is 399 graphous graphite powders；Institute
Stating activating agent is Fe2O3, alumina powder or K2Cr2O7.
The preparation method of a kind of vanadium nitrogen microalloy additions the most according to claim 1, it is characterised in that include following step
Rapid:
1) vfanadium compound that mass fraction is 100 parts is ground to 200 250 mesh through flour mill；
2) the Delanium reducing agent that mass fraction is 20～28 parts is mixed with the vfanadium compound after grinding, add mass parts
Number is the activating agent of 1～5 part and water that mass fraction is 12 parts, is sufficiently mixed uniformly through spiral rotary drum type batch mixer；
3) by the mixture after mix homogeneously under the conditions of pressure is 3000pa～5000pa compressing, the reproduced goods of molding lead to
It's 3 days the pasting natural normality is dried, and is dried through full-automatic 55 meters of nitrogen atmosphere protection dou-ble-pusher kiln, reduces, carbonization, nitrogenizes, burns
Knot, cooling integrated continuous sintering technique prepare vanadium nitrogen microalloy additions.
The preparation method of a kind of vanadium nitrogen microalloy additions the most according to claim 2, it is characterised in that described automatically
55 meters of nitrogen atmosphere protection dou-ble-pusher kiln nitrogen flows control at 1920m/t.
The preparation method of a kind of vanadium nitrogen microalloy additions the most according to claim 2, it is characterised in that described automatically
In 55 meters of nitrogen atmosphere protection dou-ble-pusher kiln, the baking temperature in negative kiln is provided heat, the negative dry temperature of kiln drying by the heat exchanger of main kiln rear
Degree is 150 degree, and negative kiln drying time is 5.5 hours, dries to vanadium nitrogen microalloy additions pellet moisture content 0.5%.
5. according to the preparation method of a kind of vanadium nitrogen microalloy additions described in claim 2 or 4, it is characterised in that described entirely
In automatic 55 meters of nitrogen atmosphere protection dou-ble-pusher kiln, the pellet after negative kiln drying enters full-automatic 55 meters of nitrogen atmosphere protection dou-ble-pusher kiln
Interior reduction is divided into once reduction and secondary reduction, and a described reduction temperature is 500 DEG C～750 DEG C, reduces 4.5 hours, by V2O5
It is reduced to the V of indissoluble2O4。
The preparation method of a kind of vanadium nitrogen microalloy additions the most according to claim 2, it is characterised in that described automatically
Carbonization in 55 meters of nitrogen atmosphere protection dou-ble-pusher kiln, nitridation complete secondary reduction simultaneously, and carbonization, nitriding temperature are 750 DEG C～1250
DEG C, reduce 7 hours；Nitridation sintered temperature is 1250 DEG C～1600 DEG C, sinters 12 hours.
The preparation method of a kind of vanadium nitrogen microalloy additions the most according to claim 2, it is characterised in that described automatically
55 meters of nitrogen atmosphere protection dou-ble-pusher kiln chilling temperatures are 950 DEG C～100 DEG C, and outlet temperature is below 80 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610373729.2A CN105838959B (en) | 2016-05-31 | 2016-05-31 | A kind of vanadium nitrogen microalloy additions and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610373729.2A CN105838959B (en) | 2016-05-31 | 2016-05-31 | A kind of vanadium nitrogen microalloy additions and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105838959A true CN105838959A (en) | 2016-08-10 |
| CN105838959B CN105838959B (en) | 2018-02-27 |
Family
ID=56596043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610373729.2A Active CN105838959B (en) | 2016-05-31 | 2016-05-31 | A kind of vanadium nitrogen microalloy additions and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105838959B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108004403A (en) * | 2017-12-11 | 2018-05-08 | 四川中益联控实业发展有限公司 | A kind of rotary kiln vanadium nitrogen alloy preparation method and equipment |
| CN110938751A (en) * | 2019-12-11 | 2020-03-31 | 湖南众鑫新材料科技股份有限公司 | Method for improving recovery rate of nitrided ferrovanadium |
| CN111485159A (en) * | 2020-05-26 | 2020-08-04 | 江苏中钒新材料科技有限公司 | Preparation method of vanadium-nitrogen alloy |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4374667A (en) * | 1981-10-14 | 1983-02-22 | Reading Alloys, Inc. | Ferrovanadium carbide addition agents and process for their production |
| CN1480548A (en) * | 2003-03-13 | 2004-03-10 | 东北大学 | Vanadium nitrogen microalloy additive and its preparing method |
| CN101693975A (en) * | 2009-10-28 | 2010-04-14 | 攀钢集团攀枝花钢钒有限公司 | Method for increasing nitrogen content of vanadium-nitrogen alloy |
| CN101921941A (en) * | 2010-09-17 | 2010-12-22 | 甘锦旺 | Method for producing vanadium-nitrogen alloy |
-
2016
- 2016-05-31 CN CN201610373729.2A patent/CN105838959B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4374667A (en) * | 1981-10-14 | 1983-02-22 | Reading Alloys, Inc. | Ferrovanadium carbide addition agents and process for their production |
| CN1480548A (en) * | 2003-03-13 | 2004-03-10 | 东北大学 | Vanadium nitrogen microalloy additive and its preparing method |
| CN101693975A (en) * | 2009-10-28 | 2010-04-14 | 攀钢集团攀枝花钢钒有限公司 | Method for increasing nitrogen content of vanadium-nitrogen alloy |
| CN101921941A (en) * | 2010-09-17 | 2010-12-22 | 甘锦旺 | Method for producing vanadium-nitrogen alloy |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108004403A (en) * | 2017-12-11 | 2018-05-08 | 四川中益联控实业发展有限公司 | A kind of rotary kiln vanadium nitrogen alloy preparation method and equipment |
| CN110938751A (en) * | 2019-12-11 | 2020-03-31 | 湖南众鑫新材料科技股份有限公司 | Method for improving recovery rate of nitrided ferrovanadium |
| CN111485159A (en) * | 2020-05-26 | 2020-08-04 | 江苏中钒新材料科技有限公司 | Preparation method of vanadium-nitrogen alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105838959B (en) | 2018-02-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103388101B (en) | Vanadium-nitrogen microalloy additive and preparation method thereof | |
| CN102383039B (en) | Microalloy HRB500E steel bar containing chrome and nitrogen and production method thereof | |
| CN100378238C (en) | Ferrovanadium nitride alloy and preparation method thereof | |
| CN102383042B (en) | Microalloy HRB400E steel bar containing chrome and nitrogen and production method thereof | |
| CN104911497B (en) | A kind of high intensity carbonized Gear Steel 19CrNi5 production method | |
| CN102321849B (en) | Preparation method of nickel-chrome alloy steel | |
| CN104264072B (en) | A kind of 600HB grade wear-resisting steel plate and preparation method thereof | |
| CN105400927A (en) | Multi-element nitralloy core-spun yarn and application and application method of same to HRB400 steel reinforcing treatment technology | |
| CN106834775A (en) | A kind of carbon thermal reduction and the method for Nitration synthesis ferrovanadium nitride | |
| CN103572166A (en) | Boracic high-speed steel with good red hardness and preparation method thereof | |
| CN102286691A (en) | Steel plate for automobile axle housing and production method thereof | |
| CN103556068A (en) | Method for producing weather-resisting steel by using low-grade nickel ores | |
| CN107699780A (en) | A kind of method for preparing ferrovanadium nitride alloy | |
| CN105838959A (en) | Vanadium nitrogen microalloy additive and preparing method thereof | |
| CN104532130B (en) | A kind of anti-corrosion liner plate of wet ball mill high-strength tenacity and preparation method | |
| CN103752837A (en) | Method for producing water atomized alloy powder by using reduced iron of smelting slag | |
| CN107012385A (en) | The preparation method of high nitrogen VN alloy | |
| CN109477155A (en) | Manufacture have the manganese of required content, nickel, molybdenum ferrochrome method | |
| CN110055373A (en) | The converter producing and its leaching extraction vanadium method of calcium system vanadium slag | |
| CN1775663A (en) | Method for synthesizing manganese nitride by microwave | |
| CN110184521B (en) | Composite densifier and method for preparing vanadium-nitrogen alloy by adopting same | |
| CN101514406B (en) | Method for producing nitridized siliconmanganese alloy | |
| CN106086308A (en) | A kind of vanadium nitride and ferrovanadium nitride alloy reinforcing agent and its preparation method and application | |
| CN104561792B (en) | A kind of V-N alloying high strength steel plate and manufacture method | |
| CN105441631A (en) | Multielement nitralloy cored wire, application of multielement nitralloy cored wire, and production method of HRB500E high-strength aseismic steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| CB02 | Change of applicant information |
Address after: 332000 Jiangxi province Jiujiang Binjiang Xunyang Road No. 186-18 Applicant after: Jiujiang vanadium Yu new materials Limited by Share Ltd Address before: 332000 Jiangxi province Jiujiang Binjiang Xunyang Road No. 186-18 Applicant before: JIUJIANG FANYU NEW MATERIALS CO., LTD. |
|
| COR | Change of bibliographic data | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |