	US 12,280,356 B2
	Zinc aluminum silicate/granular red mud composite material of Zn²⁺-modified industrial waste red mud, preparation method and application thereof
Yanling Yang, Xi'an (CN); Jingeng Chen, Xi'an (CN); Zhigang Chen, Xi'an (CN); Yu Sun, Xi'an (CN); Yuefeng Chen, Xi'an (CN); Zhao Luo, Xi'an (CN); Chenguang Zhang, Xi'an (CN); Tiandong Wu, Xi'an (CN); Xuefeng Tian, Xi'an (CN); and Huajun Chen, Xi'an (CN)
Assigned to SHAANXI UNIVERSITY OF SCIENCE & TECHNOLOGY, Xi'an (CN)
Filed by SHAANXI UNIVERSITY OF SCIENCE & TECHNOLOGY, Xi'an (CN)
Filed on Apr. 17, 2024, as Appl. No. 18/638,003.
Claims priority of application No. 202310501591.X (CN), filed on May 5, 2023.
Prior Publication US 2024/0367144 A1, Nov. 7, 2024
Int. Cl. B01J 20/16 (2006.01); B01J 20/28 (2006.01); B01J 20/30 (2006.01)

CPC B01J 20/16 (2013.01) [B01J 20/28004 (2013.01); B01J 20/2803 (2013.01); B01J 20/3028 (2013.01); B01J 20/3042 (2013.01); B01J 20/3064 (2013.01); B01J 20/3078 (2013.01); B01J 20/3085 (2013.01)]

7 Claims

1. A preparation method of a ZAS/GRM composite material of Zn²⁺-modified industrial waste red mud, comprising following steps:

S1, adding red mud, fly ash, a binder and a pore-forming agent into water for mixing, then carrying out granulation to obtain GRM, and then carrying out air drying and roasting on the GRM to obtain porous GRM particles; and

S2, immersing the porous GRM particles into a solution containing Zn²⁺, stirring, filtering and drying to obtain a zinc aluminum silicate/granular red mud adsorbent, a ZAS/GRM adsorbent, then obtaining a ZAS/GRM composite material of Zn²⁺-modified industrial waste red mud by subjecting the ZAS/GRM adsorbent to roasting treatment.