Process for preparing alpha-alumina fine powder at low temperature

Abstract

The invention discloses a process for preparing alpha-alumina fine powder at low temperature, which comprises a turnover tank, a fastening device is arranged on the outer surface of the turnover tank, the outer surface of the turnover tank is movably connected with the inner wall of the fastening device, and support rods are uniformly arranged on the outer surface of the fastening device. The outer surface of the fastening device is fixedly connected with the top of a supporting rod, positioning plates are symmetrically arranged at the bottom of the supporting rod, the bottom of the supporting rod is fixedly connected with the two ends of the positioning plates, rolling wheels are arranged at the bottoms of the positioning plates, the bottoms of the positioning plates are fixedly connected with the tops of the rolling wheels, and a guiding device is arranged at the top of the turnover tank. The top of the turnover tank is movably connected with the bottom of the guide device, and a blocking device is arranged at the bottom of the turnover tank, aiming at the defects in the prior art, the invention provides the process for preparing the alpha-aluminum oxide fine powder at low temperature, and the problem that no good tool is provided when the prepared alpha-aluminum oxide fine powder is transferred is solved.

Description

technical field [0001] The invention belongs to the field of preparing α-alumina, in particular to a process for preparing α-alumina fine powder at low temperature. Background technique [0002] Although the alumina industry has a history of more than 100 years, high-temperature and long-term roasting of aluminum hydroxide and electrofusion are two common methods for industrial production of α-alumina, and the α-alumina particles obtained by these two methods are relatively large , need to be further pulverized and sieved before it can be further applied. It is particularly difficult to prepare ultrafine α-alumina powder, and the cost is high. How to prepare ultrafine α-alumina powder quickly and easily is a material worker's dedication to research. Many methods for preparing ultra-fine or nano-materials have been applied to the preparation of ultra-fine α-alumina. The Sol-Gel method can prepare nano-alumina precursors, but generally speaking, it needs to be calcined at 1100...

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Problems solved by technology

[0003] In order to solve the above technical problems, the present invention provides a process for preparing α-alumina fine powder at low temperature, which solves the problem that the prepared α-alumina fine powder does not have a good tool when transferring

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