Method of preparing alkali activation material by using red mud-based wet grinding and carbon sequestration and application thereof

US11958788B2 · kind B2 · utility

Assignee

• Hubei University of Technology · CN

Inventors

• Xingyang He · Hubei, CN
• Weilong Li · Shantou, CN
• Ying Su
• Zhengqi Zheng · Hubei, CN
• Jin Hong Yang · Daejeon, KR
• Yingbin Wang · Falls Church, US
• Hongbo Tan · Sichuan, CN
• Chenghao Li · Nanhu, CN

Key dates

• Filing date: May 23, 2023
• Grant date: Apr 16, 2024
• Expiry date: May 23, 2043

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P40/10
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The present invention discloses a method of preparing an alkali activation material by using red mud-based wet grinding and carbon sequestration and an application thereof. The preparation method includes: (1) adding water, red mud, a crystalline control agent, and a grinding aid into a wet grinding carbon sequestration apparatus to perform wet grinding, and simultaneously introducing CO2 until a slurry pH reaches 7 to 7.5; and removing wet grinding balls by a sieve to obtain a slurry A; (2) adding carbide slag, water and a water reducer to a wet planetary ball grinder tank for wet grinding, and removing wet grinding balls by a sieve to obtain a slurry B; (3) taking 50 to 80 parts of the slurry A and 20 to 50 parts of the slurry B and mixing them to obtain an alkali activation material.