Process for producing microcrystalline alpha-alumina by microwave calcination
US12338180B2 · kind B2 · utility
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Key dates
| Filing date | Apr 28, 2022 |
| Grant date | Jun 24, 2025 |
| Priority date | — |
| Expiry date | Apr 25, 2044 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/667
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present disclosure discloses a process for producing microcrystalline alpha-alumina by microwave calcination, which relates to the production process of calcined alumina. The product of the present disclosure has stable quality. The yield of the process of the present disclosure is higher than that of the traditional kiln production method. The energy consumption during the preparation of alpha-alumina is greatly reduced, and the zero emission of harmful gases is realized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.