公开(公告)号：US11958788B2

公开(公告)日：2024-04-16

申请号：US18322561

申请日：2023-05-23

Applicant: Hubei University Of Technology

Inventor： Xingyang He ,  Weilong Li ,  Ying Su ,  Zhengqi Zheng ,  Jin Yang ,  Yingbin Wang ,  Hongbo Tan ,  Chenghao Li

IPC: C04B7/153 ,  C04B7/24 ,  C04B7/36 ,  C04B103/30 ,  C04B111/00

CPC classification number: C04B7/1535 ,  C04B2103/302 ,  C04B2111/00017

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.

公开(公告)号：US20230382791A1

公开(公告)日：2023-11-30

申请号：US18322561

申请日：2023-05-23

Applicant: Hubei University of Technology

Inventor： Xingyang HE ,  Weilong Li ,  Ying Su ,  Zhengqi Zheng ,  Jin Yang ,  Yingbin Wang ,  Hongbo Tan ,  Chenghao Li

IPC: C04B7/153

CPC classification number: C04B7/1535 ,  C04B2103/302

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.

公开(公告)号：US11912630B2

公开(公告)日：2024-02-27

申请号：US18322534

申请日：2023-05-23

Applicant: Hubei University Of Technology

Inventor： Jin Yang ,  Xiaolei Yu ,  Xingyang He ,  Ying Su ,  Mingchao Zhang ,  Qiang Zhang ,  Zhengqi Zheng ,  Hongbo Tan

IPC: C04B7/38 ,  C04B7/52 ,  C04B28/08 ,  C04B7/153 ,  C04B28/14

CPC classification number: C04B7/1535 ,  C04B7/522 ,  C04B28/08 ,  C04B28/143

Abstract: The present invention provides a method of preparing a recycled cementitious material by a phosphogypsum-assisted carbon sequestration pretreatment process. The method includes: (1) placing 100 mass parts of phosphogypsum, 1 to 2 mass parts of grinding aid, 10 to 20 mass parts of sodium-containing alkali component, 150 to 300 mass parts of zirconia balls, and 150 to 300 mass parts of water into a wet grinding tank for wet grinding. After 10 min to 30 min of wet grinding, introducing CO2 at a flow rate of 1.5 to 2.2 mass parts/min to keep a temperature of a wet grinding slurry below 40° C. When the wet grinding slurry reaches pH=10, ending the wet grinding and sieving out a wet grinding slurry; (2) mixing the wet grinding slurry with 700 to 1000 mass parts of slag and 100 to 350 mass parts of water to obtain a recycled cementitious material.