Method for producing ferrovanadium nitride by adopting self-propagating high temperature synthesis process

A self-propagating high-temperature, ferrovanadium nitride technology is applied in the field of self-propagating high-temperature synthesis of ferronitride alloys, which can solve the problem of insufficient output, and achieve the effects of fast synthesis speed, stable comprehensive performance of steel, and reduced fluctuation value of mechanical properties of steel.

Inactive Publication Date: 2010-09-08
承德锦科科技股份有限公司
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Problems solved by technology

Domestic enterprises have been able to produce vanadium-nitrogen alloys in large quantities after researching and testing, but the current output o

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  • Method for producing ferrovanadium nitride by adopting self-propagating high temperature synthesis process
  • Method for producing ferrovanadium nitride by adopting self-propagating high temperature synthesis process
  • Method for producing ferrovanadium nitride by adopting self-propagating high temperature synthesis process

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[0020] First, the principle of the method for producing ferrovanadium nitride by the self-propagating high-temperature synthesis process of the present invention will be briefly described below.

[0021] The raw materials used in the method for producing iron vanadium nitride of the present invention can be 50 iron vanadium (FeV50), 60 iron vanadium (FeV60) or 80 iron vanadium (FeV80) and high-purity nitrogen (N 2 ), the adiabatic combustion temperature is mainly calculated by the reaction of V and N. The adiabatic combustion temperature of the synthesis reaction of vanadium-nitrogen compounds is 3500K. It can be seen that the conditions for synthesizing ferrovanadium nitride by self-propagating high-temperature synthesis technology can meet the requirement of Tad>1800K. Although the synthesis heat of FeV50 is low, the adiabatic combustion temperature of the synthesis system can be met by changing the combustion conditions, such as changing the particle size of the raw materials, t...

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Abstract

The invention relates to a method for producing ferrovanadium nitride by adopting a self-propagating high temperature synthesis process, which comprises the following steps of: firstly, crushing ferrovanadium in grinding equipment; drying and then charging the crushed ferrovanadium into a crucible in bulk; placing the crucible into a high-pressure synthesizer and filling 6-12MPa of nitrogen; starting an igniting device and igniting the raw materials to carry out synthetic reaction; automatically sustaining combustion synthesis reaction; and cooling and taking out the combusted and synthesized ferrovanadium nitride in the nitrogen and crushing into blocks, wherein the ferrovanadium and the nitrogen are used as raw materials. The method for synthesizing and producing the ferrovanadium nitride does not need additional energy sources, has no pollution, high synthesis speed, energy saving, environmental protection and high efficiency and is a hi-tech production process which is worthy of popularization.

Description

technical field [0001] The invention belongs to the production method of self-propagating high-temperature synthesis (also known as combustion synthesis) iron nitride alloy, and is mainly applicable to the production of ferrovanadium nitride. Background technique [0002] my country is the world's largest steel producer and also the world's largest steel consumer. However, low-carbon structural steel is the most used in steel, accounting for about 70% of steel usage ["Steel, Vanadium and Titanium" 2005, 26 (3): 7]. Therefore, improving the strength of ordinary carbon steel is the key to promoting my country's steel industry technology Progress, an important direction for steel structure adjustment. The solution is to increase the research and promotion of microalloyed steel. Microalloying refers to the addition of trace amounts of carbonitride-forming elements such as niobium, vanadium, and titanium on the basis of the original alloy, generally in an amount of 0.02-0.20%. ...

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Application Information

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IPC IPC(8): C22C1/04C22C29/16C22C27/02
Inventor 王声宏刘克忠晋心翠王朝晖
Owner 承德锦科科技股份有限公司
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