Vanadium-nitrogen microalloy additive and preparation method thereof

A micro-alloy additive, vanadium nitrogen technology, applied in the field of metal additives, can solve the problems of long reaction period, low labor productivity, large one-time investment in equipment, etc., and achieve the effects of improving labor production efficiency, reducing production costs, and protecting the environment

Active Publication Date: 2013-11-13
陕西丰源钒业科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In order to solve the above technical deficiencies, the purpose of the present invention is to provide a vanadium-nitrogen microalloy additive and a preparation method, in which the compound of nitrogen and the composite reducing agent are utilized in the simultaneous manner of carbonization and nitriding, to effectively solve the problem of the microalloy additive The reaction conditions in the preparation process are harsh and the reaction cycle is long, resulting in low labor productivity; the one-time investment of equipment is large, the production volume is small, and the disproportion between input and output leads to high production costs and a decline in product competitiveness

Method used

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  • Vanadium-nitrogen microalloy additive and preparation method thereof
  • Vanadium-nitrogen microalloy additive and preparation method thereof
  • Vanadium-nitrogen microalloy additive and preparation method thereof

Examples

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Effect test

Embodiment 1

[0035] Preparation of vanadium nitrogen microalloy additives with vanadium pentoxide as raw material:

[0036]Grind flake or powder vanadium pentoxide to 150 mesh through a pulverizer, weigh 100g of vanadium pentoxide and add 31g of composite reducing agent. This implementation selects 80% of 298 natural flake graphite powder And 399 crystalline graphite powder 20% reducing agent, its dosage is based on the following reaction equation, prepared according to the stoichiometric reaction, and the amount of carbon is adjusted appropriately.

[0037] V 2 o 5 +6C+1 / 2N 2 =VC+VN+5CO

[0038] Add 0.1g of density enhancer Fe powder, add 0.1g of binder sodium silicate, mix well through the cone dry mixer, add 10g of water into the wet mixer for wet mixing, and mix evenly Compression molding, the molding pressure is 2400pa, the size of the finished product after molding is an octagonal prism with a size of 40×40×35mm, and the formed product undergoes a natural normal curing reaction f...

Embodiment 2

[0041] Preparation of Vanadium Nitrogen Microalloy Additives Using Vanadium Trioxide as Raw Material

[0042] Grind flake or powder vanadium trioxide to 200 mesh through a pulverizer, take vanadium trioxide with a mass ratio of 100g as the base, and add 24g of composite reducing agent. This implementation selects 80% of 298 natural flake graphite powder And 399 crystalline graphite powder 20% reducing agent, its dosage is based on the following reaction equation, prepared according to the stoichiometric reaction, and the amount of carbon is adjusted appropriately.

[0043] V 2 o 3 +4C+1 / 2N 2 =VC+VN+3CO

[0044] Add 2g of density enhancer Mn powder, add 1.8g of binder edible starch, fully mix evenly through the cone dry mixer, then enter the wet mixer for wet mixing, add 15g of water for wet mixing, mix evenly and press to form , the molding pressing pressure is 3600pa, and the size of the finished product after molding is an octagonal prism with a size of 40×40×35mm. The f...

Embodiment 3

[0047] Ammonium polyvanadate (NH 4 ) 2 V 6 o 16 ) for the preparation of vanadium nitrogen microalloy additives as raw materials:

[0048] The powdery ammonium polyvanadate is ground to 180 mesh through a pulverizer, and the powdery ammonium polyvanadate is taken as a base of 100g in mass fractions, and 29g of composite reducing agent is added. This implementation selects 80% of 298 natural flake graphite powder And 399 crystalline graphite powder 20% reducing agent, its dosage is based on the following reaction equation, prepared according to chemical reaction measurement, and properly adjust the amount of carbon.

[0049] (NH 4 ) 2 V 6 o 16 +11C+1 / 2N 2 =3VC+3VN+8CO↑+8H 2 O↑

[0050] Add 1.5g of density enhancer Cr powder, add 1.2g of binder syrup, and mix well through a cone-type dry mixer. After entering the wet mixer, add 20g of water for wet mixing. After mixing evenly, press to form. The molding pressing pressure is 3000pa, and the size of the finished product...

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Abstract

The invention discloses a vanadium-nitrogen microalloy additive and a preparation method thereof. The preparation method comprises the following steps of 1, grinding a vanadium compound by a flour mill, 2, mixing a composite reducing agent and the grinded vanadium compound, adding a density enhancer, a binder and water into the mixture, and carrying out uniform mixing, 3, molding the mixture obtained by the step 1 by pressing, carrying out drying in air in a ordinary state, adding a curing agent into the molded mixture for a curing reaction, and carrying out a drying, reduction, carbonization, nitridation, sintering and cooling integrative continuous sintering process by a full-automatic one-step nitrogen atmosphere-protected double-push plate kiln to obtain the vanadium-nitrogen microalloy additive. The preparation method adopts a composite graphite raw material, improves a reduction rate and a product output, adopts the full-automatic one-step nitrogen atmosphere-protected double-push plate kiln, has simple processes, greatly improves production efficiency, greatly reduces a production cost and can produce the vanadium-nitrogen microalloy additive having good market competitiveness.

Description

technical field [0001] The invention belongs to a metal additive, and relates to a vanadium nitrogen microalloy additive and a preparation method thereof. technical background [0002] Vanadium-nitrogen alloys are mainly used as alloy additives in the metallurgical industry. In recent years, the industry has developed rapidly. A large number of industrial-scale application data show that the addition of vanadium to steel brings benefits to steelmaking production (reducing reheating temperature, reducing transverse cracks , reduced rolling load, reduced influence of rolling conditions on steel properties, etc.), improved steel properties (strength, toughness, ductility, formability, weldability and wear resistance, etc.), thereby reducing costs . This cost reduction not only refers to the reduction of steel production costs, but also the reduction of manufacturing costs brought about by the use of these vanadium-containing steels, such as the construction of buildings, bridg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C35/00C21C7/00
Inventor 刘会军
Owner 陕西丰源钒业科技发展有限公司
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