Method for producing ultrafine zirconium powder
A production method and technology of zirconium powder, which is applied in the field of production of ultrafine zirconium powder, can solve problems such as being unable to meet the application requirements of ultrafine zirconium powder, avoid spontaneous combustion and explosion phenomena, stabilize the process, and meet technical indicators and application requirements Effect
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Embodiment 1
[0020] (1) Put 10kg zirconium sponge (the total zirconium content is greater than 99.4%) and 2kg electrolytic zirconium powder (the total zirconium content is greater than 99%) into the crucible of the hydrogenation reactor (the charging amount accounts for 2 / 3 of the total volume of the crucible), Pump high vacuum, when the vacuum degree is less than or equal to 10Pa, close the valve of the vacuum system, pass in high-purity hydrogen, energize the resistance wire, control the current to 10A, heat the mixture of sponge zirconium and electrolytic zirconium to 300°C, and stop the power supply. Hold the heat for 2.5 hours to hydrogenate the raw material zirconium, and keep the hydrogenation reactor at normal pressure during the whole hydrogenation process to obtain zirconium hydride;
[0021] (2) Put 4.0kg of zirconium hydride into a ball mill tank with 4.2kg of agate balls. The model of the ball mill tank is Φ247mm×355mm, and the inner substrate is a zirconium lining. Fill the b...
Embodiment 2
[0026] (1) Put 8kg zirconium sponge (total zirconium content greater than 99.4%) and 2kg electrolytic zirconium powder (total zirconium content greater than 99%) into the crucible of the hydrogenation reactor (feeding amount accounts for 2 / of the total volume of the crucible 3), draw a high vacuum, when the vacuum degree is less than or equal to 10Pa, close the valve of the vacuum system, pass in high-purity hydrogen, energize the resistance wire, control the current to 20A, heat the mixture of sponge zirconium and electrolytic zirconium to 400°C, Stop energizing, keep warm for 2 hours to hydrogenate the raw material zirconium, keep the hydrogenation reactor at normal pressure during the whole hydrogenation process, and obtain zirconium hydride;
[0027] (2) Put 5.5kg of zirconium hydride into a ball milling jar containing 5.0kg of agate balls. The model of the ball milling jar is Φ247 mm × 355mm, and the inner substrate is a zirconium lining. Fill the ball milling jar with de...
Embodiment 3
[0032] (1) Put 12kg zirconium sponge (total zirconium content is greater than 99.4%) and 4kg electrolytic zirconium powder (total zirconium content is greater than 99%) into the crucible of the hydrogenation reactor (feeding amount accounts for 2 / of the total volume of the crucible 3) Draw a high vacuum. When the vacuum degree is less than or equal to 10Pa, close the valve of the vacuum system, pass in high-purity hydrogen, energize the resistance wire, and control the current to 15A. Heat the mixture of sponge zirconium and electrolytic zirconium to 360°C to ignite. Stop energizing, keep warm for 2.2 hours to hydrogenate the raw material zirconium, keep the hydrogenation reactor at normal pressure during the whole hydrogenation process, and obtain zirconium hydride;
[0033] (2) Put 5.0kg of zirconium hydride into a ball mill jar with 4.5kg of agate balls. The model of the ball mill is Φ247mm×355mm, and the inner substrate is zirconium lining. Fill the ball mill jar with deio...
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