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Preparation method of high-purity superfine aluminum oxide for ceramic tube
The invention discloses a preparation method of high-purity superfine aluminum oxide for a ceramic tube, which comprises the following steps: melting a high-purity aluminum ingot into molten aluminum, atomizing the molten molten aluminum through high-purity nitrogen to form high-activity aluminum slurry, and activating the high-activity aluminum slurry in a hydrolysis reaction kettle to obtain the high-purity superfine aluminum oxide for the ceramic tube. The preparation method comprises the following steps: carrying out hydrolysis reaction to generate aluminum hydroxide, carrying out centrifugal dehydration treatment, carrying out drying and jet milling on the dehydrated aluminum hydroxide, calcining the milled aluminum hydroxide, cooling after calcining to obtain high-purity aluminum oxide powder, and finally carrying out modification treatment on the high-purity aluminum oxide powder to obtain the high-purity superfine aluminum oxide powder. By adopting the preparation method disclosed by the invention, no chemical raw material needs to be added, the operation is simple, the preparation process is pollution-free, green and environment-friendly, the industrial production is easy, the prepared alumina powder is high in purity and small in particle size, not only can meet the requirement for preparing a ceramic tube, but also can meet other application environments, and is suitable for popularization and application.
本发明公开了一种用于陶瓷管的高纯超细氧化铝的制备方法，所述制备方法是先将高纯铝锭熔融成铝液，在将熔融的铝液通过高纯氮气进行雾化，形成高活性铝浆料，在将高活性铝浆料放入水解反应釜中进行活化，经水解反应生成氢氧化铝，然后进行离心脱水处理，经脱水后的氢氧化铝进行干燥及气流粉碎，在将粉碎后的氢氧化铝进行煅烧，经煅烧后冷却得到高纯氧化铝粉体，最后将高纯氧化铝粉进行改性处理，经改性处理后得高纯超细氧化铝粉体。采用本发明所述的制备方法，无需添加任何化学原料，操作简单，制备过程无污染，绿色环保，易于产业化生产，制备的氧化铝粉纯度高，粒度小，不仅能够满足制备陶瓷管的需求，也可以满足其它应用环境，适合推广使用。
Preparation method of high-purity superfine aluminum oxide for ceramic tube
The invention discloses a preparation method of high-purity superfine aluminum oxide for a ceramic tube, which comprises the following steps: melting a high-purity aluminum ingot into molten aluminum, atomizing the molten molten aluminum through high-purity nitrogen to form high-activity aluminum slurry, and activating the high-activity aluminum slurry in a hydrolysis reaction kettle to obtain the high-purity superfine aluminum oxide for the ceramic tube. The preparation method comprises the following steps: carrying out hydrolysis reaction to generate aluminum hydroxide, carrying out centrifugal dehydration treatment, carrying out drying and jet milling on the dehydrated aluminum hydroxide, calcining the milled aluminum hydroxide, cooling after calcining to obtain high-purity aluminum oxide powder, and finally carrying out modification treatment on the high-purity aluminum oxide powder to obtain the high-purity superfine aluminum oxide powder. By adopting the preparation method disclosed by the invention, no chemical raw material needs to be added, the operation is simple, the preparation process is pollution-free, green and environment-friendly, the industrial production is easy, the prepared alumina powder is high in purity and small in particle size, not only can meet the requirement for preparing a ceramic tube, but also can meet other application environments, and is suitable for popularization and application.
本发明公开了一种用于陶瓷管的高纯超细氧化铝的制备方法，所述制备方法是先将高纯铝锭熔融成铝液，在将熔融的铝液通过高纯氮气进行雾化，形成高活性铝浆料，在将高活性铝浆料放入水解反应釜中进行活化，经水解反应生成氢氧化铝，然后进行离心脱水处理，经脱水后的氢氧化铝进行干燥及气流粉碎，在将粉碎后的氢氧化铝进行煅烧，经煅烧后冷却得到高纯氧化铝粉体，最后将高纯氧化铝粉进行改性处理，经改性处理后得高纯超细氧化铝粉体。采用本发明所述的制备方法，无需添加任何化学原料，操作简单，制备过程无污染，绿色环保，易于产业化生产，制备的氧化铝粉纯度高，粒度小，不仅能够满足制备陶瓷管的需求，也可以满足其它应用环境，适合推广使用。
Preparation method of high-purity superfine aluminum oxide for ceramic tube
一种用于陶瓷管的高纯超细氧化铝的制备方法
ZHOU LIMING (author) / ZHOU YIMING (author)
2022-05-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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