一种氮化硅粉体的研磨方法
By combining air jet milling, stirred milling, and wet grinding with a sand mill, along with grinding balls of various diameters and alcohol solvent, the problem of large particle size and wide distribution of silicon nitride powder in existing technologies has been solved. This has enabled the preparation of ultrafine and regularly shaped silicon nitride powder, improving the bulk density and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- QINGDAO CUP NEW MATERIALS CO LTD
- Filing Date
- 2023-09-28
- Publication Date
- 2026-07-17
AI Technical Summary
Existing methods for pulverizing silicon nitride powder result in large particle size, wide distribution, high surface energy, easy agglomeration, and low bulk density, making it difficult to meet high-quality requirements.
A combination of air jet milling, stirred milling, and wet grinding with a sand mill was used. Various grinding balls of different diameters were used, and alcohol was added as a solvent during the stirred milling process. Nitrogen protection was applied to gradually control the particle size and morphology, and finally, the particles were dried.
Silicon nitride powder with ultra-fine particle size, narrow particle size distribution, and regular morphology was prepared, which improved the bulk density and grinding efficiency and reduced the cost.
Smart Images
Figure CN117299320B_ABST