Preparation process of vanadium-nitrogen alloy

A preparation process and a technology for vanadium-nitrogen alloys are applied in the production field of vanadium-containing alloys, which can solve the problems of high production cost and poor quality, and achieve the effects of uniform product quality, good quality and guaranteed operation.

Inactive Publication Date: 2019-02-05
涂绪洋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects and problems of poor quality and high production cost in the prior art, and provide a preparation process of vanadium nitrogen alloy with good quality and low production cost

Method used

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preparation example Construction

[0018] A preparation process for a vanadium-nitrogen alloy, comprising the following steps in turn:

[0019] The first step: First, the vanadium-containing compound is mechanically activated by grinding. The grinding time is greater than or equal to 1 hour, and then the reaction accelerator, graphene and binder are added for mixing to obtain a qualified mixture;

[0020] The second step: first place the above mixture for 24 hours, then mechanically shape the placed mixture into a coarse material block, and then perform aging treatment on the coarse material block, that is, the coarse material block is naturally dried at room temperature, and the processing time is longer than equal to 48 hours;

[0021] The third step: send the aging-treated coarse material into the calciner from the feed port of the vanadium-nitrogen alloy calciner, and at the same time, send high-purity nitrogen into the calciner through different inlets, and the coarse material After successively passing t...

Embodiment 1

[0028] The powdered vanadium pentoxide with a mass of 1000kg and a vanadium pentoxide grade of 98% is mechanically activated by grinding, and the grinding time is greater than or equal to 1 hour. After grinding, all of them pass through -180 mesh, and then add 10kg of ferrous carbonate Accelerator, adding 313.5kg of graphene with a fixed carbon content of 98% is a carbonizing agent, after dry mixing, add 70.5kg of water as a binder and wet mix evenly to obtain the mixture, after placing it for 24 hours, mechanically form it into a coarse Φ50 mm The block and coarse block are dried naturally for 48 hours and sent to the calcination kiln for calcination. The temperature in the drying stage is 400°C, the temperature in the carbonization stage is 1600°C, the temperature in the nitriding stage is 1350°C, and the cooling stage is water-cooled to The temperature does not exceed 100°C, the calcination time is 6 hours, the pressure in the kiln is slightly positive pressure, and the pres...

Embodiment 2

[0030] The vanadium trioxide with a quality of 1000kg and a metal vanadium content of 64.5% is mechanically activated by grinding. The grinding time is greater than or equal to 1 hour. purpose, vanadium pentoxide grade 98%) is a reaction accelerator, adding 278kg of graphene with a fixed carbon content of 98% is a carbonizing agent, after dry mixing evenly, add 112kg water and wet mix evenly to obtain a mixture, place it mechanically after 24 hours It is a coarse material block of Φ50 mm. The coarse material block is dried naturally for 48 hours and sent to a calcining kiln for calcination. The temperature in the drying stage is 300°C, the temperature in the carbonization stage is 1500°C, and the temperature in the nitriding stage is 1250°C. The cooling stage is water cooling to no more than 100°C, the calcination time is 6 hours, and the pressure in the kiln is slightly positive pressure, and the pressure range is 0.1kg / cm 3 , cooling out of the furnace will result in good su...

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PUM

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Abstract

The invention discloses a preparation process of a vanadium-nitrogen alloy. The preparation process comprises the steps that a vanadium-containing compound is subjected to mechanical activation treatment at first, a reaction promoter, graphene and a binder are added to obtain qualified mixed materials, the mixed materials are subjected to aging treatment and fed into a calcining kiln to be calcined, a drying stage, a carbonization stage, a nitridation stage and a cooling stage are sequentially carried out, a product is discharged from the kiln, and the vanadium-nitrogen alloy finished productwith the vanadium content larger than or equal to 77.0% is obtained. According to the preparation process, quality is good, product quality is stable, the production process is stable, and the production cost is low.

Description

technical field [0001] The invention relates to a preparation process of a vanadium-nitrogen alloy, which is particularly suitable for the production of vanadium-containing alloys added during the production of vanadium-containing steel materials. Background technique [0002] At present, when producing vanadium-containing steel materials, it is usually achieved by adding vanadium-containing alloys. In order to reduce the amount of vanadium added and improve the strength and toughness of steel, it is best to add vanadium-containing alloys in the form of vanadium-nitrogen alloys. Therefore, the demand for high-quality vanadium-nitrogen alloys in steel production is increasing. At present, although there are many preparation processes for vanadium-nitrogen alloys, such as vacuum method, atmospheric pressure nitriding method, etc., and the production has reached a relatively high level, they all have problems such as low output and unstable quality. The product quality of vana...

Claims

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Application Information

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IPC IPC(8): C22C35/00C22C1/05C22C27/02
CPCC22C35/00C22C1/058C22C27/02
Inventor 涂绪洋
Owner 涂绪洋
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