CN107267780A - A kind of production method of vananum - Google Patents

A kind of production method of vananum Download PDF

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Publication number
CN107267780A
CN107267780A CN201710670757.5A CN201710670757A CN107267780A CN 107267780 A CN107267780 A CN 107267780A CN 201710670757 A CN201710670757 A CN 201710670757A CN 107267780 A CN107267780 A CN 107267780A
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vananum
production method
oxide particles
vanadium oxide
vanadium
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Inventor
万贺利
李东明
王方
王丽
徐峰
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HBIS Co Ltd Chengde Branch
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HBIS Co Ltd Chengde Branch
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00—Obtaining refractory metals
    • C22B34/20—Obtaining niobium, tantalum or vanadium
    • C22B34/22—Obtaining vanadium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/04—Dry methods smelting of sulfides or formation of mattes by aluminium, other metals or silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making alloys
    • C22C1/02—Making alloys by melting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
    • C22C27/02—Alloys based on vanadium, niobium, or tantalum
    • C22C27/025—Alloys based on vanadium, niobium, or tantalum alloys based on vanadium

Abstract

The present invention relates to vanadium alloy production technical field, a kind of production method of vananum is specifically disclosed, and the production method comprises the following steps：Tablet vanadic anhydride is subjected to break process, vanadium oxide particles are obtained；The vanadium oxide particles, metal alumina particles, calcium vanadate and alloy powder are subjected to mixing treatment, mixed material is obtained；The mixed material is put in reacting furnace, ignited initiation reaction using electrode, is powered off after igniting, after 3 5min of reaction, is heated again with electrode power transmission；After heating, cooling treatment, separation alloy and slag are carried out, vananum is obtained.The production method of vananum provided by the present invention, makes alloying component more uniform, reduces the introducing of impurity, slows down the severe degree of early stage reaction；With vanadium recovery is high, production cost is low, it is good in economic efficiency the characteristics of.

Description

A kind of production method of vananum
Technical field
The present invention relates to vanadium alloy production technical field, more particularly to a kind of production method of vananum.
Background technology
Titanium alloy is widely used in war industry, aerospace industry and civilian industry, and vanadium aluminium intermediate alloy is production The important source material of titanium alloy.Therefore very strict is required to vananum impurity content, the particularly impurity such as oxygen, carbon and silicon contains Amount requires higher, in addition for that can not have oxide-film and slag inclusion in the uniformity of guarantee alloying component, alloy, is otherwise difficult to full The need for the high-end titanium alloy product of foot.
During using powder vanadium pentoxide and aluminum shot smelting vananum, moment reaction is violent, course of reaction It is difficult to control to, not only influences the uniformity of vananum composition in course of reaction, and due to reaction in course of reaction is smelted Very acutely, it there is material scaling loss serious, the low problem of vanadium yield.
The content of the invention
The reaction existed for prior art acutely, vananum uneven components, the problems such as impurity content is high, the present invention A kind of production method of vananum is provided.
To achieve the above object of the invention, the embodiment of the present invention employs following technical scheme：
A kind of production method of vananum, at least comprises the following steps：
（1）Tablet vanadic anhydride is subjected to break process, vanadium oxide particles are obtained；
（2）The vanadium oxide particles, metal alumina particles, calcium vanadate and alloy powder are subjected to mixing treatment, mixed Material；
（3）The mixed material is put in reacting furnace, ignited initiation reaction using electrode, is powered off after igniting, 3-5min is reacted Afterwards, heated again with electrode power transmission；
（4）After heating, cooling treatment, separation alloy and slag are carried out, vananum is obtained.
The production method of the vananum provided relative to prior art, the present invention, using tablet vanadic anhydride conduct Raw material, using calcium vanadate as slag former, improves the rate of recovery of vanadium, reduces the introducing of impurity, the rate of recovery of vanadium is 90%~97%； Use alloy powder as cold burden simultaneously, slow down the severe degree of early stage reaction；React later stage progress heated by electrodes processing pairing Ingot continues concurrent heating, makes alloying component more uniform；With vanadium recovery is high, production cost is low, it is good in economic efficiency the features such as.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below by using required in embodiment Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ability For the those of ordinary skill of domain, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings other attached Figure.
Fig. 1 is the process flow diagram of the embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to Limit the present invention.
With reference to Fig. 1, the embodiment of the present invention provides a kind of production method of aluminium alloy, the production method, at least including as follows Step：
（1）Tablet vanadic anhydride is subjected to break process, vanadium oxide particles are obtained；
（2）The vanadium oxide particles, metal alumina particles, calcium vanadate and alloy powder are subjected to mixing treatment, mixed Material；
（3）The mixed material is put in reacting furnace, ignited initiation reaction using electrode, is powered off after igniting, 3-5min is reacted Afterwards, heated again with electrode power transmission；
（4）After heating, cooling treatment, separation alloy and slag are carried out, vananum is obtained.
Specifically, tablet vanadic anhydride is subjected to break process, obtains vanadium oxide particles, use certain particle size Tablet vanadic anhydride is reacted with metal alumina particles under the conditions of electrical heating, is reacted more abundant.
Preferably, vanadium oxide particles granularity is 10~30mm, contributes to reaction more abundant.
It is further preferred that pentoxide content is >=98.5% in vanadium oxide particles.
Specifically, the vanadium oxide particles, metal alumina particles, calcium vanadate and alloy powder are subjected to mixing treatment, Mixed material is obtained, wherein, calcium vanadate is as slag former, and calcium vanadate is handled by removal of impurities, effectively can reduce in vananum Impurity content, harmful accessory substance is not produced, partial oxidation vanadium can be also replaced；Alloy powder is as cold burden, alloy powder The alloy powder produced in production vananum shattering process, carries out secondary remelting, no using exothermic heat of reaction in production process Alloy powder is only realized to reuse, and powder absorbs a large amount of reaction heat in reflow process again, and then reduce reaction Severe degree, it is to avoid material splash in course of reaction, reduces vanadium and damages.
Preferably, metallic aluminium grain graininess is 5~10mm, aluminium content is >=99%, contributes to reaction more abundant, simultaneously Reduce the impurity content in alloy.
Preferably, calcium vanadate is powdered, vanadic acid calcium content ＞ 98%, contributes to reaction more abundant, while reducing alloy In impurity content.
Preferably, alloy powder is the broken alloy powder produced of vananum, wherein, the production for providing alloy powder Vananum is preferably vananum waste material, so as to be conducive to the recycling of waste material.Of course it is to be understood that the alloyed powder The source of material is not limited to vananum waste material, or other non-discarded vananum.
Preferably, vanadium oxide particles and metallic aluminium granular mass ratio are 1.05~1.1:1, vanadium oxide particles with Calcium vanadate mass ratio is 8~12:1, vanadium oxide particles are 8~10 with alloy powder mass ratio:1.
Specifically, the mixed material is put in reacting furnace, ignited initiation reaction using electrode, powered off after igniting, instead It should be heated again with electrode power transmission in the later stage, the reaction later stage carries out heated by electrodes processing and continues concurrent heating to alloy pig, has Effect avoids the defect of slag inclusion in the segregation of element and alloy in alloy, makes vananum composition more uniform.
Preferably, the electrode ignites and realizes that the duration of ignition is 2-10s using electric arc electric ignition mode.
Preferably, the heat time of the heating is 3-10min.
Specifically, after heating, cooling treatment, separation alloy and slag is carried out, vananum is obtained.
Preferably, the cooling treatment is realized by Temperature fall, and temperature fall time is 48-96h.
This production method, using tablet vanadic anhydride as raw material, using calcium vanadate as slag former, improves returning for vanadium Yield, reduces the introducing of impurity, the rate of recovery of vanadium is 90%~97%；Use alloy powder as cold burden simultaneously, slow down early stage anti- The severe degree answered；React later stage progress heated by electrodes processing and concurrent heating is continued to alloy pig, make alloying component more uniform；Have Vanadium recovery is high, production cost is low, it is good in economic efficiency the features such as.
It is provided in an embodiment of the present invention in order to better illustrate, illustrated below by embodiment is further.
Embodiment 1
A kind of production method of aluminium alloy, comprises the following steps：
（1）Tablet vanadic anhydride is subjected to break process, the vanadium oxide particles that granularity is 10mm are obtained；
（2）By 525kg vanadium oxide particles, 500kg metal alumina particles, 65kg calcium vanadate and 65kg alloy powder Mixing treatment is carried out, mixed material is obtained；
（3）The mixed material is put in reacting furnace, material ignited initiation reaction using electric arc electric ignition mode, during igniting Between be 3s, after igniting power off, reaction 3min after, heated again with electrode power transmission, heat time 3min；
（4）After heating, natural cooling cooling cools after 50h, skimmed, and separation alloy and slag obtain the conjunction of vanadium aluminium Gold.
5 point samplings are carried out to obtained vananum, constituent analysis, the composition of sample point 1 are carried out to sampling vananum It is by mass percentage：V is that 58.15%, Fe is that 0.24%, Si is that 0.16%, C is that 0.08%, O is 0.08%, and its surplus is Al；Take The composition of sampling point 2 is by mass percentage：V is that 58.17%, Fe is that 0.23%, Si is that 0.15%, C is that 0.09%, O is 0.06%, its Surplus is Al；The composition of sample point 3 is that V is by mass percentage：58.17%, Fe are that 0.23%, Si is that 0.17%, C is 0.07%, O For 0.09%, its surplus is Al；The composition of sample point 4 is by mass percentage：V is that 58.15%, Fe is that 0.24%, Si is 0.15%, C is that 0.08%, O is 0.08%, and its surplus is Al；The composition of sample point 5 is by mass percentage：V is that 58.17%, Fe is 0.24%, Si is that 0.16%, C is that 0.07%, O is 0.08%, and its surplus is Al；Vanadium recovery is 92.85%.
Embodiment 2
A kind of production method of aluminium alloy, comprises the following steps：
（1）Tablet vanadic anhydride is subjected to break process, the vanadium oxide particles that granularity is 10mm are obtained；
（2）By 525kg vanadium oxide particles, 500kg metal alumina particles, 55kg calcium vanadate and 60kg alloy powder Mixing treatment is carried out, mixed material is obtained；
（3）The mixed material is put in reacting furnace, material ignited initiation reaction using electric arc electric ignition mode, during igniting Between be 3s, after igniting power off, reaction 5min after, heated again with electrode power transmission, heat time 3min；
（4）After heating, natural cooling cooling cools after 60h, skimmed, and separation alloy and slag obtain the conjunction of vanadium aluminium Gold.
5 point samplings are carried out to obtained vananum, constituent analysis, the composition of sample point 1 are carried out to sampling vananum It is by mass percentage：V is that 57.96%, Fe is that 0.22%, Si is that 0.12%, C is that 0.09%, O is 0.06%, and its surplus is Al；Take The composition of sampling point 2 is by mass percentage：V is that 57.97%, Fe is that 0.23%, Si is that 0.13%, C is that 0.08%, O is 0.07%, its Surplus is Al；The composition of sample point 3 is by mass percentage：V is that 57.95%, Fe is that 0.23%, Si is that 0.14%, C is 0.08%, O For 0.08%, its surplus is Al；The composition of sample point 4 is by mass percentage：V is that 57.95%, Fe is that 0.23%, Si is 0.13%, C is that 0.09%, O is 0.07%, and its surplus is Al；The composition of sample point 5 is by mass percentage：V is that 57.95%, Fe is 0.22%, Si is that 0.13%, C is that 0.09%, O is 0.07%, and its surplus is Al；Vanadium recovery is 93.79%.
Embodiment 3
A kind of production method of aluminium alloy, comprises the following steps：
（1）Tablet vanadic anhydride is subjected to break process, the vanadium oxide particles that granularity is 20mm are obtained；
（2）By 545kg vanadium oxide particles, 500kg metal alumina particles, 65kg calcium vanadate and 55kg alloy powder Mixing treatment is carried out, mixed material is obtained；
（3）The mixed material is put in reacting furnace, material ignited initiation reaction using electric arc electric ignition mode, during igniting Between be 3s, after igniting power off, reaction 5min after, heated again with electrode power transmission, heat time 5min；
（4）After heating, natural cooling cooling cools after 72h, skimmed, and separation alloy and slag obtain the conjunction of vanadium aluminium Gold.
5 point samplings are carried out to obtained vananum, constituent analysis, the composition of sample point 1 are carried out to sampling vananum It is by mass percentage：V is that 58.35%, Fe is that 0.19%, Si is that 0.10%, C is that 0.07%, O is 0.07%, and its surplus is Al；Take The composition of sampling point 2 is by mass percentage：V is that 58.36%, Fe is that 0.19%, Si is that 0.11%, C is that 0.09%, O is 0.05%, its Surplus is Al；The composition of sample point 3 is by mass percentage：V is that 58.34%, Fe is that 0.19%, Si is that 0.10%, C is 0.07%, O For 0.09%, its surplus is Al；The composition of sample point 4 is by mass percentage：V is that 58.35%, Fe is that 0.20%, Si is 0.11%, C is that 0.07%, O is 0.07%, and its surplus is Al；The composition of sample point 5 is by mass percentage：V is that 58.34%, Fe is 0.19%, Si is that 0.10%, C is that 0.07%, O is 0.08%, and its surplus is Al；Vanadium recovery is 94.15%.
Embodiment 4
A kind of production method of aluminium alloy, comprises the following steps：
（1）Tablet vanadic anhydride is subjected to break process, the vanadium oxide particles that granularity is 20mm are obtained；
（2）By 545kg vanadium oxide particles, 500kg metal alumina particles, 65kg calcium vanadate and 55kg alloy powder Mixing treatment is carried out, mixed material is obtained；
（3）The mixed material is put in reacting furnace, material ignited initiation reaction using electric arc electric ignition mode, during igniting Between be 5s, after igniting power off, reaction 4min after, heated again with electrode power transmission, heat time 8min；
（4）After heating, natural cooling cooling cools after 84h, skimmed, and separation alloy and slag obtain the conjunction of vanadium aluminium Gold.
5 point samplings are carried out to obtained vananum, constituent analysis, the composition of sample point 1 are carried out to sampling vananum It is by mass percentage：V is that 58.15%, Fe is that 0.19%, Si is that 0.14%, C is that 0.05%, O is 0.1%, and its surplus is Al；Sampling Point 2 composition be by mass percentage：V is that 58.16%, Fe is that 0.20%, Si is that 0.11%, C is that 0.06%, O is 0.09%, remaining Measure as Al；The composition of sample point 3 is by mass percentage：V is that 58.15%, Fe is that 0.19%, Si is that 0.15%, C is that 0.07%, O is 0.08%, its surplus is Al；The composition of sample point 4 is by mass percentage：V is that 58.15%, Fe is that 0.20%, Si is 0.15%, C It is 0.09% for 0.07%, O, its surplus is Al；The composition of sample point 5 is by mass percentage：V is that 58.16%, Fe is 0.19%, Si is that 0.14%, C is that 0.08%, O is 0.08%, and its surplus is Al；Vanadium recovery is 93.86%.
Embodiment 5
A kind of production method of aluminium alloy, comprises the following steps：
（1）Tablet vanadic anhydride is subjected to break process, the vanadium oxide particles that granularity is 20mm are obtained；
（2）By 550kg vanadium oxide particles, 500kg metal alumina particles, 50kg calcium vanadate and 60kg alloy powder Mixing treatment is carried out, mixed material is obtained；
（3）The mixed material is put in reacting furnace, material ignited initiation reaction using electric arc electric ignition mode, during igniting Between be 8s, after igniting power off, reaction 5min after, heated again with electrode power transmission, heat time 8min；
（4）After heating, natural cooling cooling cools after 84h, skimmed, and separation alloy and slag obtain the conjunction of vanadium aluminium Gold.
5 point samplings are carried out to obtained vananum, constituent analysis, the composition of sample point 1 are carried out to sampling vananum It is by mass percentage：V is that 57.96%, Fe is that 0.21%, Si is that 0.11%, C is that 0.08%, O is 0.06%, and its surplus is Al；Take The composition of sampling point 2 is by mass percentage：V is that 57.97%, Fe is that 0.22%, Si is that 0.1%, C is that 0.07%, O is 0.08%, remaining Measure as Al；The composition of sample point 3 is by mass percentage：V is that 57.97%, Fe is that 0.2%, Si is that 0.11%, C is that 0.08%, O is 0.08%, its surplus is Al；The composition of sample point 4 is by mass percentage：V is that 57.95%, Fe is that 0.19%, Si is that 0.1%, C is 0.06%, O are 0.06%, and its surplus is Al；The composition of sample point 5 is by mass percentage：V is that 57.97%, Fe is 0.21%, Si It is that 0.08%, O is 0.08% for 0.1%, C, its surplus is Al；Vanadium recovery is 94.6%.
Embodiment 6
A kind of production method of aluminium alloy, comprises the following steps：
（1）Tablet vanadic anhydride is subjected to break process, the vanadium oxide particles that granularity is 30mm are obtained；
（2）By 550kg vanadium oxide particles, 500kg metal alumina particles, 50kg calcium vanadate and 55kg alloy powder Mixing treatment is carried out, mixed material is obtained；
（3）The mixed material is put in reacting furnace, material ignited initiation reaction using electric arc electric ignition mode, during igniting Between be 6s, after igniting power off, reaction 3min after, heated again with electrode power transmission, heat time 8min；
（4）After heating, natural cooling cooling cools after 96h, skimmed, and separation alloy and slag obtain the conjunction of vanadium aluminium Gold.
5 point samplings are carried out to obtained vananum, constituent analysis, the composition of sample point 1 are carried out to sampling vananum It is by mass percentage：V is that 58.51%, Fe is that 0.19%, Si is that 0.1%, C is that 0.07%, O is 0.08%, and its surplus is Al；Sampling Point 2 composition be by mass percentage：V is that 58.51%, Fe is that 0.2%, Si is 0.0.11%, and C is that 0.07%, O is 0.07%, remaining Measure as Al；The composition of sample point 3 is by mass percentage：V is that 58.52%, Fe is that 0.2%, Si is that 0.11%, C is that 0.08%, O is 0.06%, its surplus is Al；The composition of sample point 4 is by mass percentage：V is that 58.5%, Fe is that 0.18%, Si is that 0.11%, C is 0.08%, O are 0.06%, and its surplus is Al；The composition of sample point 5 is by mass percentage：V is that 58.5%, Fe is that 0.20%, Si is 0.12%, C are that 0.06%, O is 0.09%, and its surplus is Al；Vanadium recovery is 93.81%.
Embodiment 7
A kind of production method of aluminium alloy, comprises the following steps：
（1）Tablet vanadic anhydride is subjected to break process, the vanadium oxide particles that granularity is 30mm are obtained；
（2）By 550kg vanadium oxide particles, 500kg metal alumina particles, 55kg calcium vanadate and 55kg alloy powder Mixing treatment is carried out, mixed material is obtained；
（3）The mixed material is put in reacting furnace, material ignited initiation reaction using electric arc electric ignition mode, during igniting Between be 8s, after igniting power off, reaction 5min after, heated again with electrode power transmission, heat time 10min；
（4）After heating, natural cooling cooling cools after 96h, skimmed, and separation alloy and slag obtain the conjunction of vanadium aluminium Gold.
5 point samplings are carried out to obtained vananum, constituent analysis, the composition of sample point 1 are carried out to sampling vananum It is by mass percentage：V is that 57.65%, Fe is that 0.20%, Si is that 0.10%, C is that 0.06%, O is 0.08%, and its surplus is Al；Take The composition of sampling point 2 is by mass percentage：V is that 57.64%, Fe is that 0.21%, Si is that 0.10%, C is that 0.06%, O is 0.07%, its Surplus is Al；The composition of sample point 3 is by mass percentage：V is that 57.65%, Fe is that 0.21%, Si is that 0.12%, C is 0.08%, O For 0.06%, its surplus is Al；The composition of sample point 4 is by mass percentage：V is that 57.66%, Fe is that 0.22%, Si is 0.13%, C is that 0.06%, O is 0.09%, and its surplus is Al；The composition of sample point 5 is by mass percentage：V is that 57.66%, Fe is 0.20%, Si is that 0.11%, C is that 0.08%, O is 0.08%, and its surplus is Al；Vanadium recovery is 93.6%.
It can be obtained, resulting vananum composition is uniform in the embodiment of the present invention, vanadium recovery is high, reclaimed by data above Rate is 92%-95%；The production method of aluminium alloy provided in the present invention can reduce production cost, increase economic efficiency.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention Any modification, equivalent substitution or improvement made within refreshing and principle etc., should be included in the scope of the protection.

Claims (10)

1. a kind of production method of vananum, it is characterised in that：At least comprise the following steps：
（1）Tablet vanadic anhydride is subjected to break process, vanadium oxide particles are obtained；
（2）The vanadium oxide particles, metal alumina particles, calcium vanadate and alloy powder are subjected to mixing treatment, mixed Material；
（3）The mixed material is put in reacting furnace, ignited initiation reaction using electrode, is powered off after igniting, 3-5min is reacted Afterwards, heated again with electrode power transmission；
（4）After heating, cooling treatment, separation alloy and slag are carried out, vananum is obtained.
2. the production method of vananum as claimed in claim 1, it is characterised in that：The vanadium oxide particles granularity is 10~30mm.
3. the production method of vananum as claimed in claim 1 or 2, it is characterised in that：In the vanadium oxide particles Pentoxide content is >=98.5%.
4. the production method of vananum as claimed in claim 1, it is characterised in that：The metallic aluminium grain graininess be 5~ 10mm, aluminium content is >=99%.
5. the production method of vananum as claimed in claim 1, it is characterised in that：The calcium vanadate is powdered, vanadic acid Calcium content ＞ 98%.
6. the production method of vananum as claimed in claim 1, it is characterised in that：The alloy powder is broken for vananum The alloy powder of broken generation.
7. the production method of vananum as claimed in claim 1, it is characterised in that：The vanadium oxide particles with it is described Metallic aluminium granular mass ratio is 1.05~1.1:1；And/or
The vanadium oxide particles are 8~12 with the calcium vanadate mass ratio:1；And/or
The vanadium oxide particles are 8~10 with the alloy powder mass ratio:1.
8. the production method of vananum as claimed in claim 1, it is characterised in that：The electrode ignites using the electric point of electric arc Fiery mode realizes that the duration of ignition is 2-10s.
9. the production method of vananum as claimed in claim 1, it is characterised in that：The heat time of the heating is 3-10min。
10. the production method of vananum as claimed in claim 1, it is characterised in that：The cooling treatment by dropping naturally Temperature realizes that temperature fall time is 48-96h.
CN201710670757.5A 2017-08-08 2017-08-08 A kind of production method of vananum Pending CN107267780A (en)

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CN108149039A (en) * 2018-01-02 2018-06-12 河钢股份有限公司承德分公司 A kind of aircraft-grade vanadium-aluminum alloy process units and the method using its production aircraft-grade vanadium-aluminum alloy
CN108559899A (en) * 2018-01-02 2018-09-21 河钢股份有限公司承德分公司 The hot smelting process of electrit of vananum
CN112609097A (en) * 2020-11-20 2021-04-06 河钢承德钒钛新材料有限公司 Method for preparing vanadium-aluminum alloy by using calcium vanadate

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