公开(公告)号：US20250153141A1

公开(公告)日：2025-05-15

申请号：US18936689

申请日：2024-11-04

Applicant: SUNRESIN NEW MATERIALS CO. LTD.

Inventor： Heng LIU ,  Qiong LIU ,  Suidang LI ,  Xiaokang KOU

IPC: B01J20/30 ,  B01J20/04

Abstract: Disclosed are a lithium adsorbent, and a preparation method and an application thereof, which relate to the technical of extraction of lithium. The method of the disclosure includes obtaining a lithium adsorbent intermediate by mixing an oil phase with an aqueous phase; and obtaining the lithium adsorbent by mixing the lithium adsorbent intermediate with an organic auxiliary agent; where the oil phase includes a lithium source, an aluminum source, an oil-phase matrix, and an oil-phase auxiliary agent, and the oil-phase matrix includes a high-molecular polymer and vinylidene fluoride; the mixing an oil phase with an aqueous phase includes performing gradient stirring on a mixture of the oil phase and the aqueous phase. According to the disclosure, the high-stability lithium adsorbent can be prepared by optimizing and screening the high-temperature resistant oil-phase matrix and a specific preparation process. Compared with an existing lithium adsorbent, the lithium adsorbent prepared through the disclosure has less degradation, better mechanical strength, and stronger corrosion resistance in a high-temperature environment, and therefore a way of effectively extracting lithium resources from high-temperature and high-salt brine is provided.

公开(公告)号：US20250136458A1

公开(公告)日：2025-05-01

申请号：US18928921

申请日：2024-10-28

Applicant: SUNRESIN NEW MATERIALS CO. LTD.

Inventor： Heng LIU ,  Qiong LIU ,  Suidang LI ,  Xiaokang KOU

IPC: C01D15/00 ,  B01J20/08

Abstract: Disclosed are a method for extracting lithium from brine, and an application. The method includes performing extraction on the brine through a continuous ion exchange process, where according to the continuous ion exchange process, in an adsorption section, adsorption is performed on the brine with an aluminum-based lithium adsorbent; in a water-pushing-material section, a resin column is washed with a solution; in a desorption section, desorption is performed with pure water, and a desorption solution is collected in segments; and in a material-pushing-water section, a solution in a resin column is replaced by spent brine. The solution used in the water-pushing-material section is a front-segment collected liquid in the desorption section, and the front-segment collected liquid satisfies the following parameter: 520 us*cm−1

公开(公告)号：US20230331591A1

公开(公告)日：2023-10-19

申请号：US18044321

申请日：2021-12-22

Applicant: SUNRESIN NEW MATERIALS CO. LTD.

Inventor： Heng LIU ,  Wenjin GAO ,  Suidang LI ,  Qiong LIU ,  Xiaokang KOU

IPC: C02F1/42 ,  C02F1/00 ,  C08F212/08 ,  B01J39/20 ,  B01J39/07 ,  B01J47/02 ,  B01J47/14 ,  B01J49/53 ,  B01J49/60

CPC classification number: C02F1/42 ,  C02F1/008 ,  C08F212/08 ,  B01J39/20 ,  B01J39/07 ,  B01J47/02 ,  B01J47/14 ,  B01J49/53 ,  B01J49/60 ,  C02F2101/105

Abstract: A resin for removing phosphorus from water body, and a preparation method therefor and an application thereof. The particle size of the resin is 0.5-0.8 mm; the resin has a porous structure, the specific surface area is 8-25 m2/g, and the pore size distribution is 3-15 nm, the wet apparent density is 0.68-0.74 g/cm3; the wet true density is 1.12-1.18 g/cm3: and the water content of the resin is 43-57% in percentage by weight. The resin is loaded with a functional group having a lanthanum-oxygen bond, so that the resin can selectively adsorb phosphate radicals in the water body. The resin can selectively remove phosphorus in the water body by using a mode of loading lanthanum on weak acid cation resin and utilizing high selectivity of the lanthanum-oxygen bond to phosphate radicals, is easy to resolve and low in synthesis cost, and can be repeatedly used. Phosphorus in eutrophicated water and waste water can be effectively removed, the content of phosphate radicals in the water body can be controlled within 20 ppm, the phosphorus removal cost of the water body is reduced and the resin has great advantages compared with conventional disposable phosphorus adsorbents.