Preparation method of zirconium nitride

A technology of zirconium nitride and zirconium powder, which is applied in the fields of chemical instruments and methods, nitrogen compounds, inorganic chemistry, etc., and can solve the problems of not being suitable for large-scale and continuous production of zirconium nitride, lack of industrial production, and many production steps. , to achieve the effect of low cost, stable product quality and high degree of automation

Inactive Publication Date: 2014-12-03
安徽港铭新材料科技有限公司
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Problems solved by technology

[0007] The preparation methods described in the above four patents are only small-scale laboratory products, do not have industrial production, and there is no process technology suitable for large-sc

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[0022] In order to make it easy to understand the technical means, creative features, goals and effects achieved by the present invention, the present invention will be further explained in conjunction with specific embodiments below.

[0023] A method for preparing zirconium nitride. The method uses metal zirconium powder of 80-120 mesh with a content of 99%-99.5% as a raw material, and ammonia gas as a reaction medium. The preparation process steps are as follows:

[0024] ① Open the liquid ammonia storage tank valve, the liquid ammonia enters the ammonia vaporizer, activate the heating water valve, the ammonia gas enters the continuous reactor through the automatic control valve, the control plate flowmeter, and the ammonia automatic alarm cut-off device, and the exhaust gas is opened at the same time Valve and pass the reacted waste gas into the incinerator for incineration;

[0025] ② Start the rotary switch of the reactor and start the heating zone at the same time, so that the...

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Abstract

The invention discloses a preparation method of zirconium nitride. The invention is characterized in that the preparation method of zirconium nitride comprises the following steps: a zirconium metal powder (80-120 meshes) is spirally conveyed into a sealed stainless steel rotary kiln reactor, ammonia gas is blown into the reactor in the reverse direction; and temperature of the reactor is controlled at 500-1100 DEG C, the reactor rotates uninterruptedly to continuously feed the zirconium metal powder and the zirconium metal powder is decomposed and undergoes nitridation by ammonia gas so as to obtain zirconium nitride. Purity of zirconium nitride is more than 99.6%. According to the invention, raw materials are easily available; technological process is stable; and the preparation method is suitable for continuous production and environmentally friendly.

Description

technical field [0001] The invention relates to a preparation method of zirconium nitride, which belongs to the fields of special metal atomic energy industry, aerospace, petrochemical and other new materials and relates to the preparation method of zirconium nitride. Background technique [0002] Zirconium nitride ZrN is a refractory compound with a golden yellow color, high decomposition temperature, good chemical stability, and good high temperature resistance, corrosion resistance, and wear resistance. It is used in nuclear energy industrial reactor protective layer alloy materials, aerospace High-temperature-resistant materials for rocket nozzles and corrosion-resistant materials for petrochemical reducing chloride containers. [0003] Chinese patent: CN102001634B, Wang Mingqiu disclosed in the production method of zirconium nitride powder: the sponge zirconium is crushed into particles with a particle size of less than 3mm, placed in a vacuum furnace, vacuumed and hea...

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Application Information

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IPC IPC(8): C01B21/076
Inventor 聂才淞
Owner 安徽港铭新材料科技有限公司
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