Device for rapidly preparing beta-Si3N4 by gas-solid reaction, and method thereof

US11602725B2 · kind B2 · utility

Assignee

• Kunming University of Science and Technology · CN

Inventors

• Lei Xu · Ottawa, CA
• Libo ZHANG · Katy, US
• Hang Li · Austin, US
• Zhaohui Han · Longchuan, CN
• Jianhua Liu · Orlando, US
• Hongying Xia · Kunming, CN
• Zhimeng Tang · Longchuan, CN
• Lirong Guo · Lo Wu, CN

Key dates

• Filing date: Dec 1, 2021
• Grant date: Mar 14, 2023
• Expiry date: Dec 1, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/10
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A device for rapidly preparing β-Si3N4 by gas-solid reaction and a method thereof, and relates to the technical field of recycling and reuse of waste fine silicon powder. The bottom of a stock bin communicates with a first opening and closing passage, a first connection passage, and the top of a first transitional bin; the bottom of the first transitional bin communicates with the first opening and closing passage, a second connection passage, and the top of a reaction bin; the bottom of the reaction bin communicates with a second opening and closing passage, the first connection passage, and the top of a second transitional bin; the bottom of the second transitional bin communicates with the top of a conveying passage through the first opening and closing passage; a material outlet of the conveying bin communicates with the collection bin.