US 12,233,401 B1
Lithium absorbent and preparation method therefor
Xiaokang Kou, Shaanxi (CN); Suidang Li, Shaanxi (CN); Wenjin Gao, Shaanxi (CN); Huan Zhang, Shaanxi (CN); and Qiong Liu, Shaanxi (CN)
Assigned to SUNRESIN NEW MATERIALS CO. LTD., Shaanxi (CN)
Filed by SUNRESIN NEW MATERIALS CO. LTD., Shaanxi (CN)
Filed on Sep. 25, 2023, as Appl. No. 18/473,474.
Claims priority of application No. 202310980240.1 (CN), filed on Aug. 4, 2023.
Int. Cl. B01J 20/30 (2006.01); B01J 20/02 (2006.01); B01J 20/10 (2006.01); B01J 20/26 (2006.01); B01J 20/28 (2006.01)
CPC B01J 20/3042 (2013.01) [B01J 20/0248 (2013.01); B01J 20/103 (2013.01); B01J 20/262 (2013.01); B01J 20/2803 (2013.01); B01J 20/2804 (2013.01); B01J 20/3007 (2013.01); B01J 20/3064 (2013.01); B01J 20/3078 (2013.01)] 19 Claims
 
1. A lithium adsorbent, wherein a raw material for preparing the lithium adsorbent comprises a lithium adsorbent active material and an auxiliary material, wherein the auxiliary material comprises a hydrophilic binder and reinforcing fibers;
wherein the hydrophilic binder comprises at least one of an inorganic binder and an organic binder;
wherein the inorganic binder is selected from the group consisting of silica sol, alumina sol, potassium silicate, lithium silicate, sodium silicate, and polyaluminum chloride; and
the organic binder is a hydrophilic macromolecular polymer or an aqueous solution containing a hydrophilic macromolecular polymer, wherein the hydrophilic macromolecular polymer selected from the group consisting of urea-formaldehyde resin, phenolic resin, melamine resin, and polyvinyl alcohol;
wherein a mass percentage of a dry matter in the hydrophilic binder is 5-30% based on a dry weight of the lithium adsorbent active material being 100%.