Method for producing vanadium nitrogen alloy

A vanadium-nitrogen alloy and nitriding technology, which is applied in the field of vanadium-nitrogen alloy production, can solve the problems of immature heating technology of process synthesis technology, limitation of industrial production efficiency, and long reaction time, so as to shorten reaction time, reduce production cost, and improve Effect of vanadium content

Inactive Publication Date: 2011-12-14
SICHUAN CHUANWEI GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, whether it is a vacuum carbothermal reduction-nitridation two-step synthesis process or a carbothermal reduction one-step synthesis process, there are technical problems in process sy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1 The inventive method takes ammonium polyvanadate as raw material to prepare vanadium nitrogen alloy

[0047] After drying, 24.98g ammonium polyvanadate (43.12% vanadium-containing), 0.331g ferric oxide, 0.2g vanadium-nitrogen alloy, particle size < 150 microns, then add 6.34g reducing agent graphite, and prepare according to stoichiometric ratio , mixed and then pressed into shape, the molded material is dried at a temperature of 100°C, and then directly added to the main reaction zone of the reactor. 1.5-5 hours. After cooling, a vanadium nitrogen alloy is obtained. In the product, V: 78.40%, C amount: 2.01%, N amount: 19.26%, S amount ≤0.009%, O amount ≤0.06%, P amount ≤0.05%, density of vanadium nitrogen alloy: 3.00~4.56g / cm.

Embodiment 2

[0048] Embodiment 2 The inventive method takes ammonium polyvanadate as raw material to prepare vanadium nitrogen alloy

[0049] After drying, 24.98g ammonium polyvanadate (43.12% vanadium-containing), 0.334g ferric oxide, 0.2g vanadium nitrogen alloy, particle size <150 microns, and then add 6.34g reducing agent graphite, and prepare according to stoichiometric ratio , mixed and then pressed into shape, the molded material is dried at a temperature of 100°C, and then directly added to the main reaction zone of the reactor. 1.5-5 hours. After cooling, a vanadium nitrogen alloy is obtained. In the product, V: 78.49%, C content: 2.08%, N content: 19.19%, S content ≤0.009%, O content ≤0.06%, P content ≤0.05%, density of vanadium nitrogen alloy: 3.00~4.52g / cm.

Embodiment 3

[0050] Embodiment 3 The inventive method takes ammonium polyvanadate as raw material to prepare vanadium nitrogen alloy

[0051] After drying, 24.98g of ammonium polyvanadate (containing 43.12% of vanadium), 0.334g of ferric oxide, particle size <150 microns, and then add 6.34g of reducing agent graphite, prepare according to the stoichiometric ratio, mix well and press to form , After the molding material is dried at 100°C, it is directly added to the main reaction zone of the reactor. The temperature of the main reaction zone is 1300-1500°C. At the same time, nitrogen gas is introduced. The nitrogen flow rate is 3l / min, and the reaction time is 1.5-5 hours. After cooling, a vanadium nitrogen alloy is obtained. In the product, V: 78.79%, C content: 2.85%, N content: 18.85%, S content ≤0.009%, O content ≤0.06%, P content ≤0.05%, density of vanadium nitrogen alloy: 3.00~4.58g / cm.

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Abstract

The invention relates to a method for producing vanadium and nitrogen alloy and belongs to the technical field of metallurgy. The technical problem to be solved by the invention is to provide a method for producing a vanadium and nitrogen alloy at a lower cost. The method for producing the vanadium and nitrogen alloy comprises the following steps: a, uniformly mixing 60 to 80 parts of vanadium-containing raw material (in form of vanadium), 1 to 2 parts of additive (in form of iron), 20 to 40 parts of C-based reducer and 0 to 0.4 part of bonding agent, and performing pressing forming to obtaina formed material; and b, drying the formed material, reacting with nitrogenized gas at 1,300 to 1,500 DEG C under an anaerobic condition for 1.5 to 5 hours, cooling and obtaining the vanadium and nitrogen alloy, wherein the nitrogenized gas contains at least one of nitrogen and ammonia gas.

Description

technical field [0001] The invention relates to a method for producing a vanadium-nitrogen alloy, belonging to the technical field of metallurgy. Background technique [0002] The microalloyed structural steel and corresponding controlled rolling process that started in the late 1950s brought revolutionary development to the steel industry, and successively developed a series of V-N steels, Nb microalloyed low temperature controlled rolling technology, vanadium Micro-alloyed strip steel VAN80, third-generation TMCP technology, V-N steel high-strength thick plate and thick-walled H-beam and other products. In recent years, due to the obvious technical and economic advantages of vanadium-nitrogen microalloying technology, vanadium-nitrogen microalloys have been used in high-strength steel bars, non-quenched and tempered steels, high-strength strips, CSP products, high-strength thick plates and thick-walled H-beams, It has been widely used in the R&D and production of seamless...

Claims

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Application Information

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IPC IPC(8): C22C29/16C22C1/10
Inventor 张力黄斌蒲年文杨琼翁庆强张武谢建国
Owner SICHUAN CHUANWEI GRP CO LTD
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